Publication:

靜態伸展次數對等速肌力的影響

本研究的主要目的在探討不同靜態伸展次數對於肌力與爆發力的影響，研究招募自願的實驗參加者為男生15名與女生7名，其平均年齡、身高、體重分別為23.4  2.8歲、171.9  7.2公分、65.7  8.7公斤，實驗參與者以間隔5至7天的時間，隨機重覆接受2次與6次的30秒坐姿體前彎之腿後肌腱群被動靜態伸展，靜態伸展的前後則通過Biodex System 4 Pro等速肌力測量系統，記錄實驗參加者在180度/秒負荷下的右膝關節最大力矩、爆發力、作功量與關節活動範圍等參數，所得資料經2（測驗）× 2（伸展次數）重覆量數二因子變異數分析後（α = .05），結果顯示膝關節屈肌與伸肌的最大力矩、爆發力和作功量在被動靜態伸展後均顯著提升（ps < .05），而伸展2次與伸展6次的肌力與爆發力表現則無顯著差異存在（ps > .05）。此一結果說明了多次的被動靜態伸展，並不會抑制膝關節伸肌與屈肌的肌力與爆發力表現。

The purpose of this study was to investigate the effect of the amount of acutely static stretching on muscular strength and power. There were 15 males and 7 females recruited voluntarily as the participants in the study. The mean age, body height, and weight of participants were 23.4  2.8 years old, 171.0  7.2 cm, and 65.7  8.7 kg, respectively. Participants were repeated to stretch hamstring muscles 2 or 6 30-s bouts randomly on a separate day spaced 5-7 days apart in a passive, static, sit-and-reach stretching exercise. Before and after acutely static stretching, the Biodex System 4 Pro was used to acquire the peak torque, power, total work, and range of motion for right knee under the loading of 180 deg/s. The 2 (test-retest) × 2 (number of stretches) repeated measures two way analysis of variance were used to compare the parameters of muscular strength/power (α = .05). The results showed that the peak torque, power, and total work were increase significantly after acutely passive static stretching (ps < .05) in flexor and extensor of knee. But there were no significant differences found between the 2 and 6 30-s bouts hamstring muscles stretching (ps > .05). It indicated that the performance of muscular strength and power in knee flexion and extension do not inhibit following the increase of amount of stretching.