USING SIMPLE LINEAR REGRESSION TO EXAMINE THE RELATIONSHIP BETWEEN SPORT-SPECIFIC PHYSICAL FITNESS AND SHOT PUT PERFORMANCE IN VARSITY ATHLETES

• Main Authors: Cheng Yung-Hsin, 鄭勇信
• Other Authors: Lu Hsin-Shan
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/07149116765067300229

碩士 === 國立臺灣體育運動大學 === 競技運動學系碩士班 === 100 === 　　The purpose was using simple linear regression to examine the linearity between sport-specific physical fitness and shot put performance in varsity athletes. Subjects were sixteen (n=16) varsity shot put athletes (age=21.12±2.41yrs; height= 177.93±7.57cm; weight=103.75±19.18 kg; lean body mass=84.67±15.79kg; and shot put performance=14.58±1.19m). Subjects were requested to perform body compositions, 30m run, standing long jump, shot overhead throw, shot standing throw, bench and squat tests. 　　Descriptive statistics was used to express the measurements as mean ± standard deviation. Simple linear regressions were performed to test the linear relationship between shot put and sport-specific physical fitness. Pearson-moment product correlation coefficients were calculated to examine the relationship of shot put performance, body composition, speed, strength, and power. Significant level was α=.05 in this study. 　　Results showed that 30 m run, standing long jump, overhead throw, standing throw, bench press, and squat were 4.8±0.491s, 2.44±0.349 m, 15.5±1.46 m, 12.74±1.21 m, 122.81±32.35 kg, and 167.81±44.01 kg, respectively. Using simple regression, shot put performance were significantly (p<.05) linear to age, height, and lean body mass. Linearity were found significant between shot put performance and 30m run（y=8.25-0.23x，p＜.05）in the speed test, shot overhead throw （y=2.44+0.89x，p＜.05）and shot standing throw (y=2.81+0.19x，p＜.05) in power tests, and bench press (y=-105+15.64x，p＜.05）. Pearson-moment product correlation coefficients revealed a significant negative relationship between 30m run and shot put performance （r=-.57，p＜.05）. Positive relationships were found between shot put performance and shot overhead throw （r=.73，p＜.05）, shot standing throw (r=.70，p＜.05）, bench press (r=.57，p＜.05）, age (r=.52，p＜.05）, height (r=.73，p＜.05）, and lean body mass (r=.54，p＜.05）. Body fat was found negatively correlated with standing long jump, shot overhead throw, shot standing throw, bench press, and squat (r=-.168~-.637), but positively correlated with 30m running time (r=.380). 　　High linearity and significant relationship between shot put performance and age, height, lean body mass, 30m run, shot overhead throw, shot standing throw and bench press suggest that improved body composition, speed, power, and strength facilitate shot put performance. Excess body fat may produce a negative effect on sport specific physical fitness and results in a lower performance.