不同層級棒球選手身體組成與骨質密度之差異

The Differences of Body Composition and Bone Mineral Density in Different Levels of Baseball Players

陳明宏(Ming-Hung Chen) ； 吳昭輝(Chao-Hui Wu) ； 詹貴惠(Kuei-Hui Chan) ； 許美智(Mei-Chich Hsu)

《運動教練科學》 14期 (2009/06) Pp. 53-65

https://doi.org/10.6194/SCS.2009.14.05

摘要

The purpose of this study was to investigate the differences of body composition and bone mineral density in different levels of baseball players. Eighty two baseball players (age: 26.2±3.7 years, body weight: 88.0±9.6 kg, height: 178.1±5.6 cm) in Taiwan participated in this study. They were divided into national representative group (n=30), professional group (n=23), and amateur group (n=29) according to their competition experience. The body mass index (BMI), body fat percentage and bone mineral density of subjects were measured. Independent oneway ANOVA was used to compare the variables between groups. The result showed that there were no significant differences between groups in BMI and body fat percentage (BMI: 27.32±2.30 kg/m2 in national representative group, 27.50±2.35 kg/m^2 in professional group, and 28.33±3.26 kg/m^2 in amateur group; body fat percentage: 21.72±3.11% in national representative group, 20.80±3.23% in professional group, and 21.83±4.30% in amateur group). The T score and Z score of bone mineral density from ultrasound measurements in national representative group were significant higher than in professional group (T score: 2.13±1.43 in national representative group and 0.73±1.46 in professional group, p＜.05; Z score: 2.76±1.44 in national representative group and 1.39±1.39 in professional group, p＜.05). In conclusion, the BMI and body fat percentage of baseball players were no difference between different levels of baseball players. However, the values of the baseball players are higher than usual standards. The bone mineral density of the baseball player is higher than the average value and the national representatives have relatively higher bone mineral density.

關鍵字

身體質量指數 ； 體脂肪率 ； 超音波

並列摘要

The purpose of this study was to investigate the differences of body composition and bone mineral density in different levels of baseball players. Eighty two baseball players (age: 26.2±3.7 years, body weight: 88.0±9.6 kg, height: 178.1±5.6 cm) in Taiwan participated in this study. They were divided into national representative group (n=30), professional group (n=23), and amateur group (n=29) according to their competition experience. The body mass index (BMI), body fat percentage and bone mineral density of subjects were measured. Independent oneway ANOVA was used to compare the variables between groups. The result showed that there were no significant differences between groups in BMI and body fat percentage (BMI: 27.32±2.30 kg/m2 in national representative group, 27.50±2.35 kg/m^2 in professional group, and 28.33±3.26 kg/m^2 in amateur group; body fat percentage: 21.72±3.11% in national representative group, 20.80±3.23% in professional group, and 21.83±4.30% in amateur group). The T score and Z score of bone mineral density from ultrasound measurements in national representative group were significant higher than in professional group (T score: 2.13±1.43 in national representative group and 0.73±1.46 in professional group, p＜.05; Z score: 2.76±1.44 in national representative group and 1.39±1.39 in professional group, p＜.05). In conclusion, the BMI and body fat percentage of baseball players were no difference between different levels of baseball players. However, the values of the baseball players are higher than usual standards. The bone mineral density of the baseball player is higher than the average value and the national representatives have relatively higher bone mineral density.

並列關鍵字

body mass index ； body fat percentage ； ultrasound

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