Correlations of Body Composition, Physical Ability and Aerobic Capacity of Junior Track and Field Athletes.

• Main Author: 顏司辰
• Other Authors: 蔡忠昌
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/rsyfud

碩士 === 國立彰化師範大學 === 運動學系 === 107 === OBJECTIVE: This study aimed to explore the correlation among body composition, physical fitness and aerobic capacity of junior track and field athletes. Determinants of the aerobic capacity were further discerned by using regression analysis. METHODS: 139 male junior track and field athletes (age 14.9 ± 0.9 years, height 167.5 ± 6.9 cm, weight 55.1 ± 8.7 kg, and BMI 19.6 ± 3.6kg/m2) were recruited to join this study. They were subjected to a battery of measurements including height, weight, body fat and lean body fat, sit and reach, backward medicine ball throw, countermovement vertical jump (CMJ), reaction time, hexagon agility test, and multistage 20m shuttle run test (20MST). Data were analyzed with descriptive statistics, Person correlation coefficient and the stepwise multiple regression. Statistical significance level of α= 0.5 was used for all analysis. Results: Running distance of 20MST were significantly correlated with BMI, percent body fat, and hexagon test, with the r = -.191, -.299, and -.367, respectively. The stepwise regression analysis selected the hexagon agility and percent body fat as determinants, with the explained variance (R2) of 13.5% and 6.4%, respectively, summed of 19.9% in total. Conclusion: Performance of hexagon agility test is influenced by motor coordination of the legs. Better motor coordination may increase running economy and hence improve the aerobic performance. On the other hand, increase of body fat may deteriorate the aerobic capacity of the young athletes, which is in agree with other studies.