Effect of high-intensity interval training and pre-meal water consumption on lipid profile in overweight and obese students

@#Introduction: Obesity and overweight in adolescents and adults are associated with chronic diseases. The objective of this study was to determine the effect of high-intensity interval training and pre-meal water intake on the lipid profile of overweight and obese students. Methods: This was a pre-post experimental study. Twenty-seven overweight and obese students (mean BMI 26.0±3.1 kg/m2 and mean age 19.7±0.7 years) were divided randomly into three groups. The first group (n=9; BMI=26.6±3.6 kg/m2) received Plain Water Intake (PWI) intervention, whereby students received three bottles of plain water (600 mL) per mealtime (total 1.8 L/ day) and consumed ad libitum 30 to 45 minutes before mealtime (breakfast, lunch, and dinner). The second group (n=9; BMI=25.9±2.4 kg/m2) received High-Intensity Interval Training (HIIT) intervention and underwent three exercise sessions per week (18 minutes/day; 70–85% of HRmax) that was introduced through a video recording. The last group (n=9; BMI= 25.7±3.4 kg/m2) received a combination of PWI+HIIT intervention. Nutritional status, nutrient intake, and lipid profile [total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C)] were assessed before and after the interventions. Data were analysed using paired sample t-test and Analysis of Variance (ANOVA). Results: The PWI group showed a significant increase in HDL-C, while the HIIT group showed a significant reduction in TC (p<0.05). On the other hand, the PWI+HIIT group showed significant improvements in lipid profile (TC, TG and HDL-C) (p<0.05). Conclusion: A combination of PWI+HIIT intervention may be effective in improving lipid profile.

Maternal factors associated with vitamin A concentration in colostrum of postpartum mothers in South Sulawesi Province, Indones

@#Introduction: Newborns have low vitamin A reserves and rely on breastmilk to meet their vitamin A needs. This study aimed to determine factors associated with vitamin A concentration in colostrum of rural postpartum mothers. Methods: Out of 180 postpartum women interviewed at seven Community Health Centers in South Sulawesi Province, 160 who met the inclusion criteria were included in the study. Breastmilk (colostrum) samples were obtained shortly after delivery from the breast that was not full and not fed to the infant for at least 30 min. Breastmilk samples of 3-5 mls were collected into sterile plastic tubes using a manual pump. The samples were immediately placed in an icebox and transported to the laboratory within six hours after collection. Vitamin A concentrations were determined using HPLC method. Socioeconomic characteristics, anthropometric measurements, gestational age, and dietary intake of mothers (24-hour recall) were obtained. Bivariate and multiple linear regression analysis were undertaken to determine factors associated with vitamin A concentration in colostrum. Results: Dietary assessment showed unsatisfactory intake levels of calories, fat, protein, vitamin A, iron and zinc compared to the recommendations for Indonesia. Mean vitamin A concentration in colostrum was 58.2 μg/dl, and about 81.2% of the participants had normal colostrum vitamin A concentration. Iron intake and gestational age were significantly associated with colostrum vitamin A concentrations. Conclusion: Majority of the postpartum mothers had normal colostrum vitamin A concentration. Maternal dietary intake including iron is important to ensure adequacy of vitamin A in breastmilk.