Lateritisation and secondary gold distribution with particular reference to Western Australia
- Authors: Coxon, Brian Duncan
- Date: 1993
- Subjects: Laterite -- Australia , Gold ores -- Geology -- Australia
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4974 , http://hdl.handle.net/10962/d1005586 , Laterite -- Australia , Gold ores -- Geology -- Australia
- Description: Lateritisation is associated with tropical climates and geomorphic conditions of peneplanation where hydromorphic processes of weathering predominate. Laterites are products of relative (residual) and absolute(chemical) accumulation after leaching of mobile constituents. Their major element chemistry is controlled by the aluminous character of bedrock and drainage. Bauxitisation is characterised by residual gibbsite neoformation and lateritisation, by both residual accumulation and hydromorphic precipitation of goethite controlled by the redox front at the water table. The laterite forms part of a weathering profile that is underlain by saprock, saprolite, the mottled zone and overlain by a soil horizon. The secondary gold in laterites has its source invariably with mineralised bedrock. The distribution of secondary gold is controlled by mechanical eluviation and hydromorphic processes governed by organic, thiosulphate and chloride complexing. The precipitation of secondary gold is controlled by pH conditions, stability of the complexing agent and ferrolysis. Gold-bearing laterites are Cainozoic in age and are best developed on stable Archean and Proterozoic cratons that have suffered epeirogenesis since lateritisation. Mechanical eluviation increases in influence at the expense of hydromorphic processes as a positive function of topographic slope and degradation rate. Gradients greater than 10⁰ are not conducive for lateritisation, with latosols forming instead. High vertical degradation rates may lead to the development of stone lines. In the Western Australian case, post-laterite aridification has controlled the redistribution of secondary gold at levels marked by stabilisation of the receding palaeowater table. Mineable reserves of lateritic ore are located at Boddington, Westonia and Gibson toward the south-west of the Yilgarn Block. A significant controlling variable appears to be the concentration of chloride in the regolith. Based on the Boddington model, the laterite concentrates the following elements from bedrock gold lodes: i) Mo, Sb, W, Hg, Bi and Au as mobile constituents. ii) As and Pb as immobile constituents. Geochemical sampling of ferruginous lag after bedrock and laterite has provided dispersed anomalies that are easily identifiable. "Chalcophile corridors" up to 150 km in length are defined broadly by As and Sb but contain more discrete anomalies of Bi, Mo, Ag, Sn, W, Se or Au, in the Yilgarn Block. The nature of the weathered bedrock, the tabular distribution of secondary gold ore deposition and the infrastructural environment lends the lateritic regolith to low cost, open-cut mining. The western Australian lateritic-gold model perhaps can be adapted and modified for use elsewhere in the world.
- Full Text:
- Date Issued: 1993
- Authors: Coxon, Brian Duncan
- Date: 1993
- Subjects: Laterite -- Australia , Gold ores -- Geology -- Australia
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4974 , http://hdl.handle.net/10962/d1005586 , Laterite -- Australia , Gold ores -- Geology -- Australia
- Description: Lateritisation is associated with tropical climates and geomorphic conditions of peneplanation where hydromorphic processes of weathering predominate. Laterites are products of relative (residual) and absolute(chemical) accumulation after leaching of mobile constituents. Their major element chemistry is controlled by the aluminous character of bedrock and drainage. Bauxitisation is characterised by residual gibbsite neoformation and lateritisation, by both residual accumulation and hydromorphic precipitation of goethite controlled by the redox front at the water table. The laterite forms part of a weathering profile that is underlain by saprock, saprolite, the mottled zone and overlain by a soil horizon. The secondary gold in laterites has its source invariably with mineralised bedrock. The distribution of secondary gold is controlled by mechanical eluviation and hydromorphic processes governed by organic, thiosulphate and chloride complexing. The precipitation of secondary gold is controlled by pH conditions, stability of the complexing agent and ferrolysis. Gold-bearing laterites are Cainozoic in age and are best developed on stable Archean and Proterozoic cratons that have suffered epeirogenesis since lateritisation. Mechanical eluviation increases in influence at the expense of hydromorphic processes as a positive function of topographic slope and degradation rate. Gradients greater than 10⁰ are not conducive for lateritisation, with latosols forming instead. High vertical degradation rates may lead to the development of stone lines. In the Western Australian case, post-laterite aridification has controlled the redistribution of secondary gold at levels marked by stabilisation of the receding palaeowater table. Mineable reserves of lateritic ore are located at Boddington, Westonia and Gibson toward the south-west of the Yilgarn Block. A significant controlling variable appears to be the concentration of chloride in the regolith. Based on the Boddington model, the laterite concentrates the following elements from bedrock gold lodes: i) Mo, Sb, W, Hg, Bi and Au as mobile constituents. ii) As and Pb as immobile constituents. Geochemical sampling of ferruginous lag after bedrock and laterite has provided dispersed anomalies that are easily identifiable. "Chalcophile corridors" up to 150 km in length are defined broadly by As and Sb but contain more discrete anomalies of Bi, Mo, Ag, Sn, W, Se or Au, in the Yilgarn Block. The nature of the weathered bedrock, the tabular distribution of secondary gold ore deposition and the infrastructural environment lends the lateritic regolith to low cost, open-cut mining. The western Australian lateritic-gold model perhaps can be adapted and modified for use elsewhere in the world.
- Full Text:
- Date Issued: 1993
Mabandla
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96389 , vital:31270 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048b-05
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96389 , vital:31270 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048b-05
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
Mchuyo
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96357 , vital:31266 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048b-01
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96357 , vital:31266 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048b-01
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
Mediation and the nature of cognitive socialization in the crèche and the home in a black rural context
- Authors: Van der Riet, Mary Boudine
- Date: 1993
- Subjects: Socialization , Day care centers -- South Africa -- Ciskei -- Psychological aspects , Social change -- South Africa -- Ciskei -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3077 , http://hdl.handle.net/10962/d1002586 , Socialization , Day care centers -- South Africa -- Ciskei -- Psychological aspects , Social change -- South Africa -- Ciskei -- Psychological aspects
- Description: This thesis examines socialization in the homes and crèches of a rural area in a time of change. Change which is controlled and initiated from outside the local context, creates a dilemma for socialization agents when it introduces a knowledge paradigm different from that operating locally. Rural South African communities frequently experience exogenous change. The introduction of rural preschools, locally known as crèches, provides one example of such change challenging local socialization agents. While rural residents may not operate within knowledge paradigms to deal effectively with such change, they are not necessarily defeated by it. They "grapple" with the uncertainty, developing ways of coping and containing the change. This forms the focus of this thesis. Vygotsky's concept of mediation and conceptualization of the individual/society relationship, informs the examination of "grappling" with change. Two central questions are addressed: In an unfamiliar situation, what is mediated and what resources are drawn on? The research was designed around the recognition of the process nature of research, the constructivism inherent in research and the significance of the social context. Two central mediators, the mother and the crèche teacher, and the broader social context of the home and the creche, were examined. Three levels of investigation were utilised. An analysis of mediation in dyads working on an unfamiliar task provided insight into the social/psychological dynamics. Interviews with residents highlighted socialization beliefs and practices and the social context. Analysis of verses and stories taught to children revealed the inherent ideology of socialization. The main findings of this study are that: Rural residents "grapple" with social change by drawing on their own resources; in "grappling" with the unfamiliar what is mediated is an adult/child interactional status based on the inherent ideology of socialization and the dominant resource drawn on is the "culture of orality". It is argued that in the situation of neither mastery nor defeat, rural residents have used intermediary strategies of coping and containing the effect of the preschool as an agent of exogenous, social change. Recommendations are made for integrating "socialized" and "learned" knowledge from the home and the crèche.
- Full Text:
- Date Issued: 1993
- Authors: Van der Riet, Mary Boudine
- Date: 1993
- Subjects: Socialization , Day care centers -- South Africa -- Ciskei -- Psychological aspects , Social change -- South Africa -- Ciskei -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3077 , http://hdl.handle.net/10962/d1002586 , Socialization , Day care centers -- South Africa -- Ciskei -- Psychological aspects , Social change -- South Africa -- Ciskei -- Psychological aspects
- Description: This thesis examines socialization in the homes and crèches of a rural area in a time of change. Change which is controlled and initiated from outside the local context, creates a dilemma for socialization agents when it introduces a knowledge paradigm different from that operating locally. Rural South African communities frequently experience exogenous change. The introduction of rural preschools, locally known as crèches, provides one example of such change challenging local socialization agents. While rural residents may not operate within knowledge paradigms to deal effectively with such change, they are not necessarily defeated by it. They "grapple" with the uncertainty, developing ways of coping and containing the change. This forms the focus of this thesis. Vygotsky's concept of mediation and conceptualization of the individual/society relationship, informs the examination of "grappling" with change. Two central questions are addressed: In an unfamiliar situation, what is mediated and what resources are drawn on? The research was designed around the recognition of the process nature of research, the constructivism inherent in research and the significance of the social context. Two central mediators, the mother and the crèche teacher, and the broader social context of the home and the creche, were examined. Three levels of investigation were utilised. An analysis of mediation in dyads working on an unfamiliar task provided insight into the social/psychological dynamics. Interviews with residents highlighted socialization beliefs and practices and the social context. Analysis of verses and stories taught to children revealed the inherent ideology of socialization. The main findings of this study are that: Rural residents "grapple" with social change by drawing on their own resources; in "grappling" with the unfamiliar what is mediated is an adult/child interactional status based on the inherent ideology of socialization and the dominant resource drawn on is the "culture of orality". It is argued that in the situation of neither mastery nor defeat, rural residents have used intermediary strategies of coping and containing the effect of the preschool as an agent of exogenous, social change. Recommendations are made for integrating "socialized" and "learned" knowledge from the home and the crèche.
- Full Text:
- Date Issued: 1993
Mgeniso
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96327 , vital:31262 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-07
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96327 , vital:31262 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-07
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
Morphological variation and its taxonomic implications for insular populations of Pseudocrenilabrus philander (Pisces: Cichlidae)
- Authors: Twentyman Jones, Vanessa
- Date: 1993
- Subjects: Cichlids -- Morphology , Cichlids -- Conservation , Freshwater fishes -- Conservation -- Africa, Southern
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5301 , http://hdl.handle.net/10962/d1005146 , Cichlids -- Morphology , Cichlids -- Conservation , Freshwater fishes -- Conservation -- Africa, Southern
- Description: The cichlid fish Pseudocrenilabrus philander is widely distributed in southern Africa. Many of the populations occur in small, insular, geographically isolated water bodies, some of which are in arid areas. These small allopatric populations have been isolated for thousands of years and gene flow between them is non-existent or severely restricted. Populations were found to be different in terms of coloration, size of individuals, sexual dimorphism and behaviour. This thesis involved the determination of the taxonomic status of these isolated populations, from a morphological point of view. This has been part of a larger project, involving genetic and behavioural studies, to determine whether the different populations are geographic races of a single species, or whether they are species. Heritability of the observed differences was tested by breeding through three generations under uniform laboratory conditions. The populations from which wild-caught individuals were drawn could be identified on the basis of colour. There were some differences in anatomy between populations, but none of these were entirely distinctive for a particular population. When bred under laboratory conditions, populations did not show a tendency towards uniformity, as would be expected if morphological differences were environmentally induced. However, there were slight changes in the oral and pharyngeal bone form which may be diet related. Although there are morphological differences between populations and between wild-caught and laboratory-bred populations, it is suggested that the populations of P. philander are not fully differentiated and thus in the stages of incipient speciation. other studies on P. philander have introduced an element of uncertainty in that they show different results. Behavioural work suggests that different populations would behave as different species if they were to become sympatric. Karyological and mitochondrial studies showed that there were no differences between populations. Protein electrophoresis showed that populations were genetically unique. Since the various species and subspecies of Pseudocrenilabrus have been based on morphological criteria, the approach and conclusions in this study are based entirely on morphological criteria. These studies have practical implications for conservation, as some of the small populations are threatened with extinction. If the differences between the populations were ecophenotypic (i.e. related to their environment), then threats to some populations would not affect the conservation status of the species as a whole. If, however, such differences were genetic (i.e. the populations have evolved separately), then the extinction of small, isolated populations could mean the loss of actual species. This study strongly suggests that populations are incipient species and thus should be conserved.
- Full Text:
- Date Issued: 1993
- Authors: Twentyman Jones, Vanessa
- Date: 1993
- Subjects: Cichlids -- Morphology , Cichlids -- Conservation , Freshwater fishes -- Conservation -- Africa, Southern
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5301 , http://hdl.handle.net/10962/d1005146 , Cichlids -- Morphology , Cichlids -- Conservation , Freshwater fishes -- Conservation -- Africa, Southern
- Description: The cichlid fish Pseudocrenilabrus philander is widely distributed in southern Africa. Many of the populations occur in small, insular, geographically isolated water bodies, some of which are in arid areas. These small allopatric populations have been isolated for thousands of years and gene flow between them is non-existent or severely restricted. Populations were found to be different in terms of coloration, size of individuals, sexual dimorphism and behaviour. This thesis involved the determination of the taxonomic status of these isolated populations, from a morphological point of view. This has been part of a larger project, involving genetic and behavioural studies, to determine whether the different populations are geographic races of a single species, or whether they are species. Heritability of the observed differences was tested by breeding through three generations under uniform laboratory conditions. The populations from which wild-caught individuals were drawn could be identified on the basis of colour. There were some differences in anatomy between populations, but none of these were entirely distinctive for a particular population. When bred under laboratory conditions, populations did not show a tendency towards uniformity, as would be expected if morphological differences were environmentally induced. However, there were slight changes in the oral and pharyngeal bone form which may be diet related. Although there are morphological differences between populations and between wild-caught and laboratory-bred populations, it is suggested that the populations of P. philander are not fully differentiated and thus in the stages of incipient speciation. other studies on P. philander have introduced an element of uncertainty in that they show different results. Behavioural work suggests that different populations would behave as different species if they were to become sympatric. Karyological and mitochondrial studies showed that there were no differences between populations. Protein electrophoresis showed that populations were genetically unique. Since the various species and subspecies of Pseudocrenilabrus have been based on morphological criteria, the approach and conclusions in this study are based entirely on morphological criteria. These studies have practical implications for conservation, as some of the small populations are threatened with extinction. If the differences between the populations were ecophenotypic (i.e. related to their environment), then threats to some populations would not affect the conservation status of the species as a whole. If, however, such differences were genetic (i.e. the populations have evolved separately), then the extinction of small, isolated populations could mean the loss of actual species. This study strongly suggests that populations are incipient species and thus should be conserved.
- Full Text:
- Date Issued: 1993
Mtsitso 1
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96207 , vital:31250 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-01
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96207 , vital:31250 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-01
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
Mtsitso 2
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96212 , vital:31251 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-02
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96212 , vital:31251 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-02
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
Mtsitso 3
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96290 , vital:31258 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-03
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96290 , vital:31258 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-03
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
Mtsitso 4
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96298 , vital:31259 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-04
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96298 , vital:31259 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-04
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
Mtsitso 5
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96303 , vital:31260 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-05
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96303 , vital:31260 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-05
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
Mtsitso 6
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96308 , vital:31261 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-06
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96308 , vital:31261 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-06
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
Musicians playing at Richard Hatana 60th birthday celebration
- Mbali, Willy, Jacobs, Lumkile, Hatana, Richard, Kuluman, Whytie
- Authors: Mbali, Willy , Jacobs, Lumkile , Hatana, Richard , Kuluman, Whytie
- Date: 1993
- Subjects: uncatalogued
- Type: Image
- Identifier: http://hdl.handle.net/10962/126418 , vital:35885 , RHPC-044
- Description: Musicians playing at Richard Hatana's 60th birthday celebration from left, Willy Mbali, alto sax and leader of Africn Quavers; Lumkile Jacobs, alto sax; Richard Hatana, drums; Whytie Kuluman, alto sax. , Use of this resource is governed by the terms and conditions of the Creative Commons "Attribution-NonCommercial-ShareAlike" License (http://creativecommons.org/licenses/by-nc-sa/2.0/)
- Full Text: false
- Date Issued: 1993
- Authors: Mbali, Willy , Jacobs, Lumkile , Hatana, Richard , Kuluman, Whytie
- Date: 1993
- Subjects: uncatalogued
- Type: Image
- Identifier: http://hdl.handle.net/10962/126418 , vital:35885 , RHPC-044
- Description: Musicians playing at Richard Hatana's 60th birthday celebration from left, Willy Mbali, alto sax and leader of Africn Quavers; Lumkile Jacobs, alto sax; Richard Hatana, drums; Whytie Kuluman, alto sax. , Use of this resource is governed by the terms and conditions of the Creative Commons "Attribution-NonCommercial-ShareAlike" License (http://creativecommons.org/licenses/by-nc-sa/2.0/)
- Full Text: false
- Date Issued: 1993
Mwemiso
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96348 , vital:31265 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-08
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96348 , vital:31265 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048a-08
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
Mzeno (wusiwana)
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96367 , vital:31268 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048b-03
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1993
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Europe Holland Hague e-ne
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96367 , vital:31268 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC048b-03
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1993
Ne Ma Nin Me
- Sali Sidibe (composition, lyrics, lead vocal), Boubacar Kane (djembe), Aminata Diabate, Fatim Sissoko (backing vocals), Rakesh Toure (keyboards), Mamadou Coulibaly (N'Bolon), Harouna Samake (N'goni), Zoumana Tereka (Violin), Samba Dioakite (Balafon), Sterns Africa label, Samassa Records
- Authors: Sali Sidibe (composition, lyrics, lead vocal) , Boubacar Kane (djembe) , Aminata Diabate, Fatim Sissoko (backing vocals) , Rakesh Toure (keyboards) , Mamadou Coulibaly (N'Bolon) , Harouna Samake (N'goni) , Zoumana Tereka (Violin) , Samba Dioakite (Balafon) , Sterns Africa label , Samassa Records
- Date: 1993
- Subjects: Popular music--Africa, West , Popular music--Mali--1991-2000 , Africa Mali Bamako f-ml
- Language: Bambara
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/130004 , vital:36355 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC36-02
- Description: Malian neo-traditional vocals set to a unique blend of didai, sigui and sogonikun dance rhythms
- Full Text: false
- Date Issued: 1993
- Authors: Sali Sidibe (composition, lyrics, lead vocal) , Boubacar Kane (djembe) , Aminata Diabate, Fatim Sissoko (backing vocals) , Rakesh Toure (keyboards) , Mamadou Coulibaly (N'Bolon) , Harouna Samake (N'goni) , Zoumana Tereka (Violin) , Samba Dioakite (Balafon) , Sterns Africa label , Samassa Records
- Date: 1993
- Subjects: Popular music--Africa, West , Popular music--Mali--1991-2000 , Africa Mali Bamako f-ml
- Language: Bambara
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/130004 , vital:36355 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC36-02
- Description: Malian neo-traditional vocals set to a unique blend of didai, sigui and sogonikun dance rhythms
- Full Text: false
- Date Issued: 1993
Personal growth through classroom English : (What pupils say they get out of English teaching)
- Authors: Thiel, Louise
- Date: 1993
- Subjects: Educational counseling English language -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1696 , http://hdl.handle.net/10962/d1003579
- Description: Guidance and counselling aims to promote the personal growth of the adolescent. However, in the current South African context, it is possible that formalised Guidance instruction and the post of the school counsellor may disappear in many schools as a result of economic rationalisation. If this occurs, the fostering of personal growth will rest with all teachers and it will be vital to utilise all available opportunities. The study of English is one of the areas traditionally seen to promote personal growth, as several aims of English teaching relate to such growth. The purpose of this study is to investigate from the pupil's perspective whether these aims are being fulfilled within 'Model C' CEO schools in order to gauge the potential of English teaching to fulfil the personal growth role of Guidance teaching. Pupils were asked what influence English teaching had on their attitudes and ideas towards life, on themselves and on their development as people. From the data, common themes were established and documented. These themes showed that important aspects of personal growth are indeed fostered by the English teaching of literature, poetry, written work, oral work and visual literacy. This study therefore confirms that English teaching does foster personal growth and that the potential does exist for English teaching to subsume some of the roles of Guidance.
- Full Text:
- Date Issued: 1993
- Authors: Thiel, Louise
- Date: 1993
- Subjects: Educational counseling English language -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1696 , http://hdl.handle.net/10962/d1003579
- Description: Guidance and counselling aims to promote the personal growth of the adolescent. However, in the current South African context, it is possible that formalised Guidance instruction and the post of the school counsellor may disappear in many schools as a result of economic rationalisation. If this occurs, the fostering of personal growth will rest with all teachers and it will be vital to utilise all available opportunities. The study of English is one of the areas traditionally seen to promote personal growth, as several aims of English teaching relate to such growth. The purpose of this study is to investigate from the pupil's perspective whether these aims are being fulfilled within 'Model C' CEO schools in order to gauge the potential of English teaching to fulfil the personal growth role of Guidance teaching. Pupils were asked what influence English teaching had on their attitudes and ideas towards life, on themselves and on their development as people. From the data, common themes were established and documented. These themes showed that important aspects of personal growth are indeed fostered by the English teaching of literature, poetry, written work, oral work and visual literacy. This study therefore confirms that English teaching does foster personal growth and that the potential does exist for English teaching to subsume some of the roles of Guidance.
- Full Text:
- Date Issued: 1993
Pharmacodynamics of phenylpropanolamine: aspects of safety and efficacy in humans
- Authors: Petrie, Lauri René
- Date: 1993
- Subjects: Phenylpropanolamine
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3785 , http://hdl.handle.net/10962/d1003263 , Phenylpropanolamine
- Description: Phenylpropanolamine (PPA), a synthetic sympathomimetic amine, is widely used as a nasal decongestant and as an appetite suppressant. Much controversy exists regarding the efficacy of the drug as an anorectic agent, the related adverse reactions caused by the relatively high doses required for appetite suppression and the potential of this drug for abuse. Whilst numerous studies have been carried out to assess the central and cardiovascular safety of PPA and many investigations have been performed to evaluate efficacy in terms of weight loss in humans, there is a relative paucity of information regarding the effects of PPA on appetite and food intake. A pilot trial was conducted to determine the feasiblility of a multidimensional approach to evaluate the safety and efficacy of PPA as ananorectic agent in humans. Eight normotensive caucasian women who were overweight participated in a randomised double-blind cross-over comparison of PPA (75 mg) and placebo and were dosed to steady-state on a 12-hour fixed-dose schedule for a period of eleven weeks. Aspects of efficacy evaluated included the effects of PPA on hunger, appetite and satiety,salivation, macro-nutrient food intake and body weight. Standardised scales were used to quantitatively assess the possible subjective mood and behavioural reinforcing effects of PPA. Supine systolic and diastolic blood pressures were monitored continually throughout the trial. In addition, peak and trough blood samp1es were taken to monitor serum concentrations of PPA reached at steady-state and patient compliance with the dosing schedule. An adaptation of a published reverse-phase high performance liquid chromatographic (HPLC) assay for PPA in serum using U.V. detection at 210 nm is presented. A significant decrease in body weight, salivation, total food intake and carbohydrate consumption was demonstrated following PPA administration. Phenylpropanolamine produced significant decrements in subjective reports of hunger and appetite, whilst apparently having little effect on satiety. No significant changes were observed for blood pressures and PPA did not produce significant mood alterations or behavioural reinforcing effects. The study demonstrates the feasibility of using this muti-faceted approach, with certain design modifications, to evaluate the overall safety and efficacy of PPA as an appetite suppressant.
- Full Text:
- Date Issued: 1993
- Authors: Petrie, Lauri René
- Date: 1993
- Subjects: Phenylpropanolamine
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3785 , http://hdl.handle.net/10962/d1003263 , Phenylpropanolamine
- Description: Phenylpropanolamine (PPA), a synthetic sympathomimetic amine, is widely used as a nasal decongestant and as an appetite suppressant. Much controversy exists regarding the efficacy of the drug as an anorectic agent, the related adverse reactions caused by the relatively high doses required for appetite suppression and the potential of this drug for abuse. Whilst numerous studies have been carried out to assess the central and cardiovascular safety of PPA and many investigations have been performed to evaluate efficacy in terms of weight loss in humans, there is a relative paucity of information regarding the effects of PPA on appetite and food intake. A pilot trial was conducted to determine the feasiblility of a multidimensional approach to evaluate the safety and efficacy of PPA as ananorectic agent in humans. Eight normotensive caucasian women who were overweight participated in a randomised double-blind cross-over comparison of PPA (75 mg) and placebo and were dosed to steady-state on a 12-hour fixed-dose schedule for a period of eleven weeks. Aspects of efficacy evaluated included the effects of PPA on hunger, appetite and satiety,salivation, macro-nutrient food intake and body weight. Standardised scales were used to quantitatively assess the possible subjective mood and behavioural reinforcing effects of PPA. Supine systolic and diastolic blood pressures were monitored continually throughout the trial. In addition, peak and trough blood samp1es were taken to monitor serum concentrations of PPA reached at steady-state and patient compliance with the dosing schedule. An adaptation of a published reverse-phase high performance liquid chromatographic (HPLC) assay for PPA in serum using U.V. detection at 210 nm is presented. A significant decrease in body weight, salivation, total food intake and carbohydrate consumption was demonstrated following PPA administration. Phenylpropanolamine produced significant decrements in subjective reports of hunger and appetite, whilst apparently having little effect on satiety. No significant changes were observed for blood pressures and PPA did not produce significant mood alterations or behavioural reinforcing effects. The study demonstrates the feasibility of using this muti-faceted approach, with certain design modifications, to evaluate the overall safety and efficacy of PPA as an appetite suppressant.
- Full Text:
- Date Issued: 1993
Pineal-adrenal gland interactions in search of an anti-stressogenic role for melatonin
- Authors: Van Wyk, Elizabeth Joy
- Date: 1993
- Subjects: Pineal gland -- Secretions , Melatonin , Adrenal glands , Pineal gland -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4054 , http://hdl.handle.net/10962/d1004115 , Pineal gland -- Secretions , Melatonin , Adrenal glands , Pineal gland -- Research
- Description: The multiple functions of the pineal gland have been collectively interpreted as constituting a general anti-stressogenic role. The adrenal glands play a central role in maintaining homeostasis. The major neuroendocrine consequence of long-term stress is elevated circulating glucocorticoid levels. In this study, the effect of chronic, oral hydrocortisone treatment on pineal biochemistry was investigated in male Wi star rats of the albino strain. The results show that seven days of oral hydrocortisone treatment endows the pineal gland with the ability to increase melatonin synthesis in organ culture. The increase is accompanied by a rise in NAT activity, cyclic AMP levels and enhanced specific binding to the pineal B-adrenergic receptors. It appears that hydrocortisone sensitizes the pineal gland to stimulation by B-adrenergic agonists. thus rendering the pineal more responsive to B-adrenergic agonists. Further studies were directed at demonstrating an anti-stressogenic function for the pineal gland by investigating whether the principal pineal indole, melatonin. could protect against the deleterious effects of elevated. circulating drocortisone levels. The results show that chronic, oral hydrocortisone treatment significantly increases liver tryptophan pyrrolase activity. The catabolism of tryptophan by tryptophan pyrrolase is an important determinant of tryptophan availability to the brain, and therefore, brain serotonin levels. The findings show that melatonin inhibits basal and hydrocortisone-stimulated liver tryptophan pyrrolase apoenzyme activity in a dose-dependent manner. This inhibition suggests that melatonin may protect against excessive loss of tryptophan from circulation and against deficiencies in the cerebral serotinergic system which are associated with mood and behavioural disorders. It was shown that another deleterious effect of chronic hydrocortisone treatment is a significant increase in the number of glutamate receptors in the forebrain of male Wistar rats. The increase in receptor number observed in this study is probably due to an increase in the synthesis of glutamate receptors and is associated with a marked reduction in the affinity of the glutamate receptors for glutamate. possible to demonstrate an receptor number or the For practical reasons, it was not effect of melatonin on either glutamate affinity of glutamate receptors for glutamate in rat forebrain membranes. In view of the neurotoxic effect of glutamate in the eNS, the functional significance of recently described glutamate receptors in the pineal gland was investigated. The results show that 10-4 M glutamate significantly inhibits the isoprenaline-stimulated synthesis of N-acetylserotonin and melatonin in organ culture when the pineal glands were pre-incubated with glutamate for 4 hours prior to stimulation with isoprenalin and when glutamate and isoprenaline were administered together in vitro. GABA, a glutamate metabolite could not mimic the decrease in isoprenalinestimulated melatonin, and it is likely that the observed effects were directly attributed to glutamate. Incubation of the pineal gland with 10-4 M glutamate in organ culture did not affect HIOMT activity in pineal homogenates, but significantly elevated both basal and isoprenaline-stimulated NAT activity. It was concluded that glutamate only inhibits melatonin synthesis in intact pineal glands and not in pineal homogenates. The present study has provided further support for an interaction between the pineal and the adrenal glands. There is an ever increasing likelihood that melatonin is an anti-stressogenic hormone and that the pineal gland may have a protective role to play in the pathology of stress-related diseases.
- Full Text:
- Date Issued: 1993
- Authors: Van Wyk, Elizabeth Joy
- Date: 1993
- Subjects: Pineal gland -- Secretions , Melatonin , Adrenal glands , Pineal gland -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4054 , http://hdl.handle.net/10962/d1004115 , Pineal gland -- Secretions , Melatonin , Adrenal glands , Pineal gland -- Research
- Description: The multiple functions of the pineal gland have been collectively interpreted as constituting a general anti-stressogenic role. The adrenal glands play a central role in maintaining homeostasis. The major neuroendocrine consequence of long-term stress is elevated circulating glucocorticoid levels. In this study, the effect of chronic, oral hydrocortisone treatment on pineal biochemistry was investigated in male Wi star rats of the albino strain. The results show that seven days of oral hydrocortisone treatment endows the pineal gland with the ability to increase melatonin synthesis in organ culture. The increase is accompanied by a rise in NAT activity, cyclic AMP levels and enhanced specific binding to the pineal B-adrenergic receptors. It appears that hydrocortisone sensitizes the pineal gland to stimulation by B-adrenergic agonists. thus rendering the pineal more responsive to B-adrenergic agonists. Further studies were directed at demonstrating an anti-stressogenic function for the pineal gland by investigating whether the principal pineal indole, melatonin. could protect against the deleterious effects of elevated. circulating drocortisone levels. The results show that chronic, oral hydrocortisone treatment significantly increases liver tryptophan pyrrolase activity. The catabolism of tryptophan by tryptophan pyrrolase is an important determinant of tryptophan availability to the brain, and therefore, brain serotonin levels. The findings show that melatonin inhibits basal and hydrocortisone-stimulated liver tryptophan pyrrolase apoenzyme activity in a dose-dependent manner. This inhibition suggests that melatonin may protect against excessive loss of tryptophan from circulation and against deficiencies in the cerebral serotinergic system which are associated with mood and behavioural disorders. It was shown that another deleterious effect of chronic hydrocortisone treatment is a significant increase in the number of glutamate receptors in the forebrain of male Wistar rats. The increase in receptor number observed in this study is probably due to an increase in the synthesis of glutamate receptors and is associated with a marked reduction in the affinity of the glutamate receptors for glutamate. possible to demonstrate an receptor number or the For practical reasons, it was not effect of melatonin on either glutamate affinity of glutamate receptors for glutamate in rat forebrain membranes. In view of the neurotoxic effect of glutamate in the eNS, the functional significance of recently described glutamate receptors in the pineal gland was investigated. The results show that 10-4 M glutamate significantly inhibits the isoprenaline-stimulated synthesis of N-acetylserotonin and melatonin in organ culture when the pineal glands were pre-incubated with glutamate for 4 hours prior to stimulation with isoprenalin and when glutamate and isoprenaline were administered together in vitro. GABA, a glutamate metabolite could not mimic the decrease in isoprenalinestimulated melatonin, and it is likely that the observed effects were directly attributed to glutamate. Incubation of the pineal gland with 10-4 M glutamate in organ culture did not affect HIOMT activity in pineal homogenates, but significantly elevated both basal and isoprenaline-stimulated NAT activity. It was concluded that glutamate only inhibits melatonin synthesis in intact pineal glands and not in pineal homogenates. The present study has provided further support for an interaction between the pineal and the adrenal glands. There is an ever increasing likelihood that melatonin is an anti-stressogenic hormone and that the pineal gland may have a protective role to play in the pathology of stress-related diseases.
- Full Text:
- Date Issued: 1993
Plastic changes in spinal function of pre-pubescent scoliotic children engaged in an exercise therapy programme
- Authors: Solberg, Gill
- Date: 1993
- Subjects: Exercise therapy -- Methods , Scoliosis in children -- Exercise therapy -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5163 , http://hdl.handle.net/10962/d1015973
- Description: Previous studies of the effect of exercise therapy on scoliosis have demonstrated progression of spinal curves despite vigorous exercise regimens. This study presents evidence to the contrary. Ten children with functional scoliosis and attendant upper thoracic asymmetries were analyzed both before and after a specific exercise therapy programme, in order to determine the effect of the therapy on spinal functionality and the scoliotic curve. The effect of this intensive treatment, in which the subjects underwent a five-month exercise training programme with a total of 60 one-hour sessions, was investigated in a controlled clinical trial. A subjective and objective appraisal of posterior trunk asymmetry in schoolchildren aged 7-18 is reported. Selected functional and anthropometric measurements were made before and after the treatment, and antero-posterior x-rays were used to indicate changes in the scoliotic curve. New methods are described for quantifying the scoliotic curves in each child. Post-treatment tests showed a significant (p<0.05) decrease in Cobb's angles as well as a significant reduction in all the spinal and thoracic functional asymmetries observed in the study. The findings suggest that selective exercise programmes can contribute to improvement in cases of functional scoliosis. The study sheds new light on problems related to scoliosis and the benefits of exercise rehabilitation. Data on the incidence of scoliosis amongst 1052 black children are also presented and discussed.
- Full Text:
- Date Issued: 1993
- Authors: Solberg, Gill
- Date: 1993
- Subjects: Exercise therapy -- Methods , Scoliosis in children -- Exercise therapy -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5163 , http://hdl.handle.net/10962/d1015973
- Description: Previous studies of the effect of exercise therapy on scoliosis have demonstrated progression of spinal curves despite vigorous exercise regimens. This study presents evidence to the contrary. Ten children with functional scoliosis and attendant upper thoracic asymmetries were analyzed both before and after a specific exercise therapy programme, in order to determine the effect of the therapy on spinal functionality and the scoliotic curve. The effect of this intensive treatment, in which the subjects underwent a five-month exercise training programme with a total of 60 one-hour sessions, was investigated in a controlled clinical trial. A subjective and objective appraisal of posterior trunk asymmetry in schoolchildren aged 7-18 is reported. Selected functional and anthropometric measurements were made before and after the treatment, and antero-posterior x-rays were used to indicate changes in the scoliotic curve. New methods are described for quantifying the scoliotic curves in each child. Post-treatment tests showed a significant (p<0.05) decrease in Cobb's angles as well as a significant reduction in all the spinal and thoracic functional asymmetries observed in the study. The findings suggest that selective exercise programmes can contribute to improvement in cases of functional scoliosis. The study sheds new light on problems related to scoliosis and the benefits of exercise rehabilitation. Data on the incidence of scoliosis amongst 1052 black children are also presented and discussed.
- Full Text:
- Date Issued: 1993