THE RELATIONSHIP BETWEEN PHYSICAL ACTIVITIES AND BODY MASS INDEX (BMI) IN ADOLESCENTS AGED 16-18 YEARS OLD IN SMA NEGERI 2 DENPASAR

Abstract

Any movement of the body produced by skeletal muscles that requires energy expenditure, and muscle work
which called physical activities. Increased BMI occurs because of an energy imbalance between food intake with energy
released to cause the buildup of energy in the form of fat that can lead to obesity or increased BMI.This study purpose
was to determine the relationship between physical activities and body mass index (BMI) in adolescents aged 16-18
years old in SMA Negeri 2 Denpasar. This research was analytical research with cross sectional approach done in
February-March 2018. Sampling was done by Simple Random Sampling. Sample amounted to 70 people. The results
showed the relationship between physical activities with body mass index. In the calculation of chi square data analysis
could be seen that significant value (2-tailed) was 0,000 which meant that significant value was p < 0.05. Based on the
results of this study, it can be concluded that there is a strong relationship between physical activities and body mass
index (BMI) in adolescents aged 16-18 years old in SMA Negeri 2 Denpasar.

Keywords : Physical activity, Body Mass Index (BMI)