Various studies have shown that the relationship between waist circumference (WC) and abdominal obesity is age, gender as well as ethnicity-dependent. WC criteria for Sub Saharan Africans have not been defined by the International Diabetes Federation (IDF). The aim was to determine which WC cut off best predicted Metabolic Syndrome (MetS) in a group of urban African teachers (80 males and 93 females). We determined sphygmomanometer blood pressure, WC, glucose, high density lipoprotein cholesterol (HdL) and triglyceride (TRIG) values. The males' MetS profile was less favourable as their glucose, TRIG and blood pressure levels were higher than the proposed cut off for MetS. The females could be classified as obese, based on their mean BMI (32.78±6.36) and WC (93.48±15.68). Receiver operating characteristic (ROC) WC cut offs of 90, 91, 94 and 96 cm for the respective MetS components in males (blood pressure, HdL, glucose and TRIG) were suggested. In the females, cut offs of 92, 98, 94 and 94 cm for TRIG, blood pressure, HdL and glucose respectively, were put forward. Odds ratios revealed that increased blood pressure best predicted ROC WC in both males (OR 9.59; 95% CI 3.14-29.32) and females (OR 3.11; 95% CI 1.30-7.42) irrespective of age. We suggest that the optimal cut off point for the males be set at 90 cm, as opposed to the current 94 cm; whilst the female cut off be set at 98 cm as opposed to the existing cut off of 80 cm. Larger sample groups are recommended to justify our data.
The species composition, seasonal abundance and spatial distribution of the fish fauna of the Mbashe estuary (S km long) was determined by means of gill nets. During the 37 month survey period, 290S fish (2319,S kg), comprising 27 species, were caught. The family Mugilidae, representing 5S,S% of the numbers and 57,4% of the biomass, predominated the catches. In terms of biomass M. cepha/us, A. h%/epidotus and P. commersonnii were the most important species. Seasonal pattems for 10 of the 27 species were observed.M. cepha/us, A. h%/epidotus and L. amia were more abundant in spring/summer, E machnata and V.buchanani in spring, P. commersonnii and L. tricuspidens increased numerically in winter and M. capensis in autumn, Johnius dussumieri and Va/amugil cunnesius were rare in winter and summer, respectively. Largest catches were made in the middle reaches of the estuary followed by the upper and lower reaches, respectively.Die spesiesamestelling, seisoenverspreiding, en voor1
A group of 102 preschool children aged 13-69 months from a rural area of Lebowa were selected from a cross-sectional study of 659 children for an intervention trial (12 months) to study the effect of catfish (Clarias gariepinus) supplementation on their plasma phospholipid fatty acid status and growth. They were classified into undernourished and control groups according to their weight-for-age. The undernourished children (n = 52) received 43 g fish and 7.5 g sunflower cooking oil per day, whereas a matched (age and sex) well-nourished control group (n = 50) was not supplemented. At baseline, after 6 months and after 12 months of the study, anthropometry, haematology, blood biochemistry and plasma phospholipid fatty acid analyses were done. In the undernourished group, high baseline oleic acid (18:1 9) levels in plasma phosphatidylcholine (PC) were replaced by docosahexaenoic acid (22:6 3) with supplementation. In plasma PC, this reduction in 18:1 9 and increase in 22:6 3 was associated with significant increases in weight-for-age Z-scores, P = 0.0378 and P = 0.0415, respectively. The fish supplement and cooking oil that supplied additional 7% energy (7% E) and nutrients promoted growth of undernourished children, although this was inadequate for sustained growth during the second 6 months of intervention.
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