The purpose of this study was to examine the incidence of obesity and Developmental Coordination Disorder (DCD) of girls in the age group 10-12 years of different race groups in the North-West Province. A second purpose was to determine if DCD status can be predicted effectively among 10-12 year old girls with regard to race, age, percentage body fat, body mass, length, body mass index and bent aim hang. Obesity is the cause of health risks, psychological consequences and improper development (Chantell et al., 1994:116; Marshall & Bouffard, 1994:1997; Treuth et al., 1997:1738). Children with DCD have poor motor abilities and experience problems regarding concentration and social abilities, all of which are necessary for successful schooling (Geuze & Borger, 1993:14; Piek & Edwards, 1997:55; Sugden & Chambers, 1998:139) According to research, the incidence of obesity among children has doubled over the last 20 years, and 10-30% of all children and adolescents can be classified as obese. Causes of obesity may be genetic but a lack of physical activity and an unbalanced diet can also contribute to obesity. Health risks, psycho-social risks and developmental disorders are all indicated in the literature to be consequences of obesity. The incidence of DCD is documented in the literature to be between 5% and 16%. It is also shown that it may be the cause of problems in daily living and at school, and some racial differences with regard to motor differences are indicated. It is also indicated that overweight and obese children are less mobile and that their motor achievement is poorer in movements where the shifting of body weight is required. All the subjects for this study (N=346) completed the Movement ABC (MABC) (Henderson & Sugden, 1992) to determine their DCD status. Fat percentage was determined from the subscapular and triceps skin folds according to the formula of Boileau et al. (1985:17-27), while a body mass index (BMI) (l/w2)above the 85th percentile was used as a criterion for overweight, and a BMI of above the 95th percentile for obesity. The Statistics for Windows computer package was used to determine descriptive statistics and significant differences between the groups. The results showed that the incidence of obesity and DCD were 4,93% and 59,78% respectively. 50% of the white girls, 72,73% of blacks, 0% of coloureds and 100% of Indian girls in the total group who were classified as DCD were also obese. The results indicated a higher relationship between obesity and DCD among the Indian and black girls compared to the white and coloured girls in the DCD group. Indian girls showed the highest incidence of obesity and coloured girls the least. The Indian and black girls also showed the highest incidence of DCD, while the percentages of DCD among all the race groups were higher than the levels indicated in the literature. The percentage of obesity found in the study was lower than in the literature, but higher percentages were found among the Indian and white girls, while all the obese Indian girls were also classified as suffering from DCD. With regard to the second aim of the study, no significant predictors for DCD could be found among the different body composition variables of bent arm hang, race and age, although some tendencies emerged. Results showed that the percentage fat was not a good predictor of DCD status in the group, but in the different racial groups its predictive value became higher. However, none of the variables could be considered good predictors of DCD status among girls, although it can be concluded that there are tendencies towards a relationship between obesity, DCD and race. Thus it is important for children with DCD and obesity (separate and in combination) to be identified and treated with intervention programs as early as possible, and it is essential to include physical activities as part of the treatment (Dussart, 1994:81; LeMure et al., 2000:336). The results of the study indicated that it is important to analyse the needs and characteristics of the different race groups in order to ensure the success of such programs. Indian girls especially should be encouraged to participate in physical activity programmes because of the high percentages of obesity found in the DCD group. / Thesis (M.Sc. (Human Movement Science))--North-West University, Potchefstroom Campus, 2004.

The purpose of this study was to explore perceived physical competence and participation in physical activity of children with physical awkwardness. Children with physical awkwardness are those without known neuromuscular problems but who have difficulty in learning and performing motor skills. Participants were 135 children, 31 with physical awkwardness and 104 without any motor deficiency. The age ranged from 5 to 11 years. It was hypothesized that children with physical awkwardness would have lower levels of perceived physical competence and would participate less in physical activity than their nonawkward peers. Finally, a positive relationship between motor performance and perceived physical competence was expected. / There were no significant differences found in perceived physical competence between the two groups. However, nonawkward children participated significantly more in community sports and were significantly more active during free play than children with physical awkwardness. The results also indicated that the relationship between motor performance and perceived physical competence was very low in both groups. (Abstract shortened by UMI.)

No description available.

Adolescence is characterized by systematic and dramatic physical and behavioural changes, the most noticeable physical growth is the rapid increase in stature marked by peak height velocity (PHV). Anecdotally, many people are aware that as youth pass through their adolescent growth spurt there is a perceived period of physical awkwardness; however, there is no scientific agreement as to whether a period of awkwardness associated with the adolescent growth actually exists. Previous research has focused on the development of general motor performance or gross motor coordination. Increases in strength during adolescence may mask the effect of a stage of adolescent awkwardness on general motor performance tasks. To detect adolescent awkwardness it is necessary to measure either performance of skills that specifically do not depend on strength, or body awareness. The purpose of this study was to investigate whether female adolescents’ awareness of their body size and movement was influenced by biological maturation, and whether adolescent awkwardness could be detected in performance of sport specific skills independent of strength. An endpoint matching task was used to measure awareness of foot position in space by measuring the distance (mm) between a reference and matching endpoint position (endpoint matching error (EME)) with eyes either open or closed. The Johnson wall volley and a ball juggling task were used to measure soccer specific skill and coordination. Thirty six female youth soccer players, aged 10-14 years, were recruited. Age at PHV was predicted from measures of age, height, leg length and weight. Three groups were identified: pre-PHV (n=6), PHV (n=5) and post –PHV (n=25). Mean group differences were assessed using ANOVA. It was found that when the endpoint matching task was performed with eyes open there was no significant difference in mean EME between groups (p > 0.05). With eyes closed the PHV group performed worse than the pre-PHV and post-PHV groups. The Post-PHV group significantly (p < 0.05) decreased their EME (22.2 ± 13.9) compared to the PHV group (32.8 ± 17.6) but no difference was found with the Pre-PHV group (27.5 ± 15.7). On the wall volley test the Post-PHV group performed significantly (p < 0.05) better compared to the PHV group but not the Pre-PHV group. The Post-PHV group performed significantly (p < 0.05) better on the ball juggling task compared to both the Pre-PHV and the PHV groups. In conclusion, the results suggest that in the year around PHV body awareness, as measured by EME, may plateau or decrease and that soccer skill performance plateaus. This plateau or decrease in body awareness and soccer skills involving coordination is likely temporary; participants in this study who were > 6 months past PHV had significantly better body awareness and soccer skill performance than those participants who were within 6 months of PHV. The results from the endpoint matching task also indicate that a measure of body size and movement awareness has the potential to be used to measure changes in body awareness during the adolescent growth spurt. The results of this study suggest that teenage clumsiness could exists. However, a definitive study with larger maturity groups followed over time is required to confirm this statement.

Children with developmental coordination disorder (DCD) find academic and performing age-appropriate perceptual-motor skills more difficult than their peers. According to research, children classified as learning disabled often show signs of one or more syndromes of developmental disorders rather than an isolated, discrete disability. The more common learning disorders include disabilities related to verbal communication development, reading disorders, gross and fine motor dysfunction and motor hyperactivity. Attention disorders, including or excluding hyperactivity, are not considered learning disabilities in themselves. However, because attention problems can gravely interfere with school performance, they are often associated with problems concerning academic skills Literature further reveals that boys are more inclined to motor problems, learning disabilities and ADHD, compared to girls. With regards to racial diversity, limited information is available, even though some literature implies that certain racial diversities differ to some extent regarding motor problems (DCD). The purpose of this study was to examine the relationship between DCD, learning disabilities and ADHD of children (N = 99) in the age group 6 to 7 years in Potchefstroom in the NW province. A second purpose was to examine the differences between gender and certain racial groups in the age group 6 to 7years in Potchefstroom with regards to to DCD, learning disabilities and ADHD. Two grade one classes were randomly selected from three selected schools in the Potchefstroom district proportionally representing the different racial groups [white (n = 37), black (n = 50), Coloured (n = 12)]. In this group, 48 boys and 53 girls were evaluated with the Movement ABC (MABC) (Henderson & Sugden, 1992), the Aptitude test for school beginners (ASB) (Swart et a/., 1994), the Modified Conner's abbreviated teacher and the Taylor Hyperactivity checklist (Lowenberg & Lucas, 1999). The Statistics for Windows computer package was used for analyzing the data. The group of children without DCD showed a statistically significant higher total ASB scores than the DCD group (p ≤ 0.00). A multiple regression analysis showed a statistically significant interaction between DCD, learning disabilities and ADHD which varied between 22% and 36%. Analysis of differences in the ASB of boys and girls with and without DCD showed no significant interactions, although racial interactions (p < 0.001) were found with the DCD group (p < 0.025). Boys with DCD did not perform as well as the girls in the coordination subtest, and their ADHD totals indicate more symptoms than those of the girls. Black children's numerical skills, verbal communication and the ASB total appeared to be considerably lower than the values of the white children. Overall, the conclusion can be made that DCD has an effect on 6 to 7-year old children's learning abilities and to a lesser extent on their ADHD status. / Thesis (M.A. (Human Movement Science))--North-West University, Potchefstroom Campus, 2007.

Thesis (M.A. (Human Movement Science))--North-West University, Potchefstroom Campus, 2007.

Children with developmental coordination disorder (DCD) find academic and performing age-appropriate perceptual-motor skills more difficult than their peers. According to research, children classified as learning disabled often show signs of one or more syndromes of developmental disorders rather than an isolated, discrete disability. The more common learning disorders include disabilities related to verbal communication development, reading disorders, gross and fine motor dysfunction and motor hyperactivity. Attention disorders, including or excluding hyperactivity, are not considered learning disabilities in themselves. However, because attention problems can gravely interfere with school performance, they are often associated with problems concerning academic skills Literature further reveals that boys are more inclined to motor problems, learning disabilities and ADHD, compared to girls. With regards to racial diversity, limited information is available, even though some literature implies that certain racial diversities differ to some extent regarding motor problems (DCD). The purpose of this study was to examine the relationship between DCD, learning disabilities and ADHD of children (N = 99) in the age group 6 to 7 years in Potchefstroom in the NW province. A second purpose was to examine the differences between gender and certain racial groups in the age group 6 to 7years in Potchefstroom with regards to to DCD, learning disabilities and ADHD. Two grade one classes were randomly selected from three selected schools in the Potchefstroom district proportionally representing the different racial groups [white (n = 37), black (n = 50), Coloured (n = 12)]. In this group, 48 boys and 53 girls were evaluated with the Movement ABC (MABC) (Henderson & Sugden, 1992), the Aptitude test for school beginners (ASB) (Swart et a/., 1994), the Modified Conner's abbreviated teacher and the Taylor Hyperactivity checklist (Lowenberg & Lucas, 1999). The Statistics for Windows computer package was used for analyzing the data. The group of children without DCD showed a statistically significant higher total ASB scores than the DCD group (p ≤ 0.00). A multiple regression analysis showed a statistically significant interaction between DCD, learning disabilities and ADHD which varied between 22% and 36%. Analysis of differences in the ASB of boys and girls with and without DCD showed no significant interactions, although racial interactions (p < 0.001) were found with the DCD group (p < 0.025). Boys with DCD did not perform as well as the girls in the coordination subtest, and their ADHD totals indicate more symptoms than those of the girls. Black children's numerical skills, verbal communication and the ASB total appeared to be considerably lower than the values of the white children. Overall, the conclusion can be made that DCD has an effect on 6 to 7-year old children's learning abilities and to a lesser extent on their ADHD status. / Thesis (M.A. (Human Movement Science))--North-West University, Potchefstroom Campus, 2007.

Thesis (MAppSc in Physiotherapy) -- University of South Australia, 1994

Bibliography: leaves 208-219 / x, 219 leaves : ill ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Psychology, 1992

Thesis (M.Phil.) - University of Queensland, 2006. / Includes bibliography.