PubMed Health⌕ Search

Biomedical subjects

P Jooste

Publications and source records attributed to P Jooste.

5 recordsLinked to original sources
PubMed1998

Anthropometric profile of a black population of the Cape Peninsula in South Africa.

This study describes the anthropometry of an urban black population living in the Cape Peninsula, South Africa. A random sample of 986 selected adults aged 15-64 years and 163 children aged three to six years, included data on heights, weights, and mid-upper arm circumferences and calculation of the body mass index (BMI). The mean height of men was 168.3 cm and that of women 158.3 cm. Mean weight, BMI and mid-upper arm circumference for men were 66.2 kg, 23.4 and 28.1 cm and for women 69.8 kg, 27.8 and 30.6 cm respectively. The prevalence of underweight in men (BMI < 20) was 19% and in women (BMI < 19) 3.7%; 22% of the men were overweight (BMI > or = 25) and 7.9% obese (BMI > or = 30), while 36.4% of women were overweight (BMI > or = 24) and 34.4% obese (BMI > or = 30). More than half of the women above the age of 35 years were obese. Anthropometry of the three to six year old children was calculated for stunting, wasting and underweight, expressed in terms of the National Centre for Health Statistics standards, and revealed co-existing evidence of growth retardation and wasting with emergent obesity. These findings suggest that a part of this community, who may have been nutritionally deprived during childhood, has moved from undernutrition to extreme overnutrition without having achieved optimal nutritional status. Complexities that need to be considered when planning strategies to address malnutrition in the black South African population are identified.

Adolescent↗
PubMed1996

Hypertension in the black community of the Cape Peninsula, South Africa.

Hypertension prevalence, treatment status and factors relating to high blood pressure were determined in an urban black community of the Cape Peninsula, South Africa. A study population of 986 subjects aged 15-64 years was randomly selected. Blood pressure, height, weight and serum cholesterol levels were measured, while demographic information, personal and family history relating to hypertension and attendance of health services were determined by questionnaire. Overall 9.2% of males and 12.9% of females were hypertensive according to WHO criteria. Blood pressures between 160/95 and 140/90 mmHg were found in 10% of males and 10.5% of females. The treatment status of hypertensives showed that 24.3% had a blood pressure below 160/95 mmHg, and 16% below 140/90 mmHg. Hypertensives used more alcohol and were more overweight than normotensives. Multiple logistic regression revealed that hypertension was independently related to age, being overweight and more urbanised. The degree of urbanisation also predicted to what extent hypertension prevalence increases with age. This black population had low hypertension rates compared with other similar groups in South Africa. These data suggest that as rural blacks increasingly undergo urbanisation, hypertension prevalence increases. Necessary diagnostic and treatment regimens and hypertension services are not yet in place in the South African health services, and need to be established.

Adolescent↗
PubMed1990

Phenotypic expression of the HLA linked iron-loading gene in males over the age of 40 years: a population study using serial serum ferritin estimations.

The frequency of the HLA linked iron-loading gene was assessed in 1783 Afrikaner men over the age of 40 years living in the South Western Cape. Measurements, made on three occasions over a 4.5 year period, included the serum ferritin concentration, a screening test for reduced unsaturated iron-binding capacity and the percentage transferrin saturation. The serum gamma-glutamyl transferase concentration was used as a marker of alcohol abuse. The diagnosis of homozygosity was based on a serum ferritin concentration that was persistently greater than 400 micrograms l-1 and a percentage transferrin saturation greater than 55%. Using these criteria, 17 subjects were diagnosed as homozygous, corresponding to a disease frequency of 0.0095, a gene frequency of 0.0976 and a heterozygote frequency of 0.176 (95% confidence limits: 0.135-0.213). None of the subjects had overt clinical haemochromatosis. Typing for the HLA-A, -B, -C and -DR loci showed that the HLA-A3 allele (frequency 0.6471 and relative risk 4.4) was the only independent marker for the iron-loading gene in this asymptomatic population. Using the present approach it was not possible to distinguish between heterozygotes, alcohol abusers and normal subjects with serum ferritin concentrations at the upper end of the normal range.

Adult↗
PubMed1981

Slow-wave sleep: a recovery period after exercise.

Sleep recordings were carried out on athletes on four successive nights after completing a 92-kilometer road race. Significant increases in total sleep time and slow-wave sleep were found after this metabolic stress. The results show a definite exercise effect on sleep and support sleep-restoration hypotheses.

Adolescent↗