發球速度對網球選手上肢等速肌力之比較

Upper Limb Isokinetic Strength for Tennis Players with Different Serve Velocities

10.5297/ser.1302.009

梁龍鏡(Lung-Ching Liang)

等速肌力峰值 ； 速度 ； 肩 ； 肘 ； 腕 ； peak torque ； velocity ； shoulder ； elbow ； wrist

大專體育學刊

13卷2期（2011 / 06 / 30）

181 - 187

繁體中文;英文

本研究目的在探討不同發球速度女子網球選手上肢等速肌力峰值的差異。20位大專甲組女子網球選手自願參與，以發球速度劃分為快速發球組（10位，發球速度=145.40 ± 5.60公里╱小時）與一般發球組（10位，發球速度=128.30 ± 5.31公里╱小時），分別進行肩關節屈曲╱伸展、肩關節90度外展之外旋╱內旋、肘關節屈曲╱伸展、腕關節屈曲╱伸展等動作之等速肌力峰值測試，所得資料以平均數±標準差表示，以獨立樣本t考驗分析兩組各關節等速肌力峰值之差異。結果顯示：一、在120 deg╱sec、240 deg╱sec、360 deg╱sec三種角速度下，肘關節伸展動作之單位體重等速肌力峰值在兩組間均有顯著差異（t=3.48, 3.33, 2.39; p<.05）；二、肩屈曲╱伸展、肩關節90度外展之外旋╱內旋、肘關節屈曲、腕屈曲╱伸展之單位體重等速肌力峰值在兩組間皆未達顯著水準之差異。本研究驗證肘伸展肌力在網球發球速度表現上是扮演著較重要的角色。因此建議在訓練時，宜加強肘伸展肌力之訓練，以期能有效提升網球的發球速度。

The purpose of this study was to compare the differences of upper limb isokinetic peak strength between high and general serve velocity in female tennis players. Twenty female collegiate tennis players were volunteered in this study. All participants were equally assigned into high serve velocity players (HP, velocity in serve=145.40 ± 5.6 km/h) and general serve velocity players (GP, velocity in serve=128.30 ± 5.31 km/h) based on the performance of speed in serve. Isokinetic strength tests were performed by the Biodex S4 dynamometer for dominant shoulder flexion/extension, shoulder 90° abduction external/internal rotation, elbow flexion/extension, and wrist flexion/extension at three different angular velocities. Independent t-tests were used to analyze the different of isokinetic peak torque per body weigth (PT/BW) at each angular velocity between groups. Result showed that: 1. HP showed significant higher PT/BW in elbow extension at 120 deg/sec, 240 deg/sec and 360 deg/sec angular velocities. (t=3.48, 3.33, 2.39; p＜.05). 2. No significant differences were found in shoulder flexion/extension, shoulder 90° abduction external/internal rotation, elbow flexion, and wrist flexion/extension isokinetic PT/BW between groups in each testing. From these results, this study demonstrated that strength in elbow extension may play an important role for the tennis serve velocity. Therefore, it is recommended that tennis training should strengthen the elbow extension to improve the serving velocity.

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