Abstract
This study examined the relationships among skeletal muscle mass, nutrient intake, and physical activities in male adolescents. The 5SUPth/SUP Korean national health and nutrition examination survey was analyzed using the SPSS 23.0 package program. The results showed that high skeletal muscle mass group (Q4) had a lower body weight, body mass index, systolic blood pressure, plasma cholesterol and triglyceride levels, and higher HDL-C level than the low skeletal muscle mass group (Q1). In addition, the high muscle mass group showed a higher carbohydrate but lower protein intake ratio. On the other hand, the Q4 group showed higher protein intake per body weight compared to the Q1 group. Male adolescents, who had a high muscle mass performed more high intensity exercise than those who had a low muscle mass. These results indicated that adequate muscle mass should be maintained to improve the health-related factors (blood pressure, plasma cholesterol and triglyceride, and HDL-C) in male adolescents and sufficient protein intake and regular high intensity exercise should be conducted to maintain adequate muscle mass.
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