PENGARUH PROGRAM SENAM AEROBIK UNTUK MENURUNKAN INDEKS MASSA TUBUH (IMT) TERHADAP REMAJA OBESITAS DI SMA LAB UM MALANG

prevalence at both global and national levels, including in Indonesia. Obesity during adolescence tends to persist into adulthood and may increase the risk of non- communicable diseases such as type 2 diabetes mellitus, hypertension, and cardiovascular disease. One of the main contributing factors to obesity in adolescents is insufficient physical activity. Aerobic exercise is a form of moderate-intensity physical activity that involves continuous movements of large muscle groups and is considered effective and safe for reducing Body Mass Index (BMI). A total of 48 students at SMA Lab. UM Malang were identified as obese. Therefore, this study was conducted to examine the effect of an aerobic exercise program on reducing Body Mass Index (BMI) among obese adolescents at SMA Lab. UM Malang.
Purpose: To determine the effect of an aerobic exercise program on reducing Body Mass Index (BMI) among obese adolescents at SMA Lab UM Malang.
Method: This study employed a pre-experimental research design using a two-group pre-test and post-test approach. The research sample consisted of 48 respondents who met the inclusion criteria and were selected using purposive sampling techniques.
Result: Based on the results of the paired t-test analysis using SPSS, a p-value of 0.000 (< 0.05) was obtained, indicating that the alternative hypothesis (H1) was accepted. This finding suggests that aerobic exercise has a significant effect on reducing Body Mass Index (BMI) among obese adolescents at SMA Lab UM Malang. Furthermore, the independent t-test analysis yielded a p-value of 0.804 (> 0.05), indicating no significant difference between group 1 and group 2.
Conclusion: The results of the study indicate that the implementation of an aerobic exercise program among obese adolescents at SMA Lab. UM Malang had a significant effect on reducing Body Mass Index (BMI). After the intervention, a significant decrease in BMI values was observed compared to pre-intervention measurements. In addition, the group that received a combination of aerobic exercise and resistance exercise also demonstrated a significant reduction in BMI following the intervention. However, the analysis revealed no significant difference between the aerobic exercise group and the combined aerobic and resistance exercise group.