Influence of BMI, Body Fat Percent, Physical Activity, on Sports Fitness; Correlation Study on Students of SMP Negeri 3 Bandar Lampung

Abstract

This study aims to determine the relationship between BMI, percent body fat, and physical activity on physical fitness of VIII grade students of SMP Negeri 3 Bandar Lampung. This type of research is quantitative with a correlational approach. The population in this study were VIII grade students of SMP Negeri 3 Bandar Lampung aged 13-14 years as many as 100 people, based on total sampling technique. The instruments used to measure BMI are scales and meters, measurement of body fat percentage is done in several parts, namely biceps, triceps subscapula, and suprailliaca, physical activity using questioner Physical Activity Level, Physical fitness is measured by the Physical Fitness Test (TKJI) age 13-15 years. Data analysis techniques using Pearson Correlation Product Moment analysis. The results showed that (1) There is a significant influence between BMI on physical fitness of VIII grade students of SMP Negeri 3 Bandar Lampung with r count 0.374. (2) There is a significant effect of body fat percent on the physical fitness of VIII grade students of SMP Negeri 3 Bandar Lampung with r count 0.439. (3) There is a significant influence between physical activity on physical fitness of VIII grade students of SMP Negeri 3 Bandar Lampung with r count. (4) There is a significant influence of BMI, body fat percent, and physical activity on the physical fitness of students in class VIII of SMP Negeri 3 Bandar Lampung with r count. (5) Physical activity has a greater influence on the physical fitness of VIII grade students of SMP Negeri 3 Bandar Lampung with r count. The coefficient of determination shows that physical activity has an influence of 40.96% on physical fitness.