Analysis of Body Composition Factors That Affect Trunk Muscle Mass in Late Adolescence
Abstract
Adolescent nutritional status can be assessed by body mass index (BMI). BMI is related to muscle mass. It is associated with the overall body composition such as muscle mass, bone mass, and fat mass, and is packaged in a formula involving weight (BW) and height. Body composition can be different for each individual. The development of muscle mass is usually followed by an increase in muscle strength in adolescents. This study aimed to determine the body composition factors that affect trunk muscle mass in late adolescent males and females. This was an analytical observational study with a cross-sectional approach involving 50 male and female respondents, respectively, who were students at Muhammadiyah Malang University, selected using purposive sampling. The data recorded were height, BW, BMI and trunk muscle mass. The data obtained were analyzed using bivariate analysis through the Pearson correlation test (BW) and ANOVA (BMI), while multivariate analysis was conducted with linear regression. A significant correlation was found between BW and trunk muscle mass in the late adolescent males (p < 0.05, correlation coefficient = 0.939) and females (p < 0.05, correlation coefficient = 0.698). The findings also showed that for late adolescent males, the coefficient score for BW and BMI was 0.920, while for the late adolescent females it was 0.499. Weight and BMI had a correlation with muscle mass with a contribution of 92% in the males and 49% in the females.
Keywords: muscle mass, body height, body weight, adolescent, late adolescent
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