1.Effect of high-intensity interval training and pre-meal water consumption on lipid profile in overweight and obese students
Nazhif Gifari ; Hardinsyah ; Drajat Martianto ; Mury Kuswari
Malaysian Journal of Nutrition 2021;27(No.1):159-168
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.
2.Nutritional Factors Determining Body Fat Percentage of Adolescent Boys in 5 Districts of Jakarta
Laras Sitoayu ; Nazhif Gifari ; Putri Ronitawati ; Rachmanida Nuzrina ; Mury Kuswari
Malaysian Journal of Medicine and Health Sciences 2023;19(No.3):235-241
Introduction: Adolescence is one of the life stages that play a key role and is also affected by the epidemiology
transition as the result of the development of the era. Consuming a lot of fast food and junk food nowadays causes
adolescents, both girls and boys, to be subjected to nutritional problems such as the high body fat percentage. Adolescent boys even tend to be unaware of their health. This study aims to analyse nutritional factors which have an
effect on body fat percentage in adolescent boys. Methods: This study was performed involving 1046 high school
students in 5 Jakarta districts. Spearman’s correlation and multiple linear regression were used for the data analysis
of this study. Results: The result shows that there was a relationship between BMI-for-age, energy and macronutrient
intakes, and body fat percentage. Adolescents with excessive intakes got affected by their body fat percentage, although their BMI-for-age is normal. The result of multivariate analysis suggests that BMI-for-age had the most effect
on body fat percentage. Conclusion: There needs to be a regular education for adolescent boys to be aware of their
body fat percentage and other factors that have an effect on it.