Fischer Jennifer, Van Lunen Bonnie L, Branch J David, Pirone Jamie L
Department of Exercise Science, Sports Medicine Research Laboratory, Old Dominion University, Norfolk, Virginia, USA.
J Strength Cond Res. 2009 Jan;23(1):44-50. doi: 10.1519/JSC.0b013e3181839e97.
This study examined the immediate and short-term (20 minute) effects of 3- and 10-minute ice bag applications to the hamstrings on functional performance as measured by the cocontraction test, shuttle run, and single-leg vertical jump. Forty-two (25 women, 17 men) recreational or collegiate athletes who were free of injury in the lower extremity 6 months before testing and who did not suffer from allergy to cryotherapy were included. Time to completion was measured in seconds for the cocontraction and the shuttle run test. Single-leg vertical jump was measured on the Vertec (Sports Imports, Columbus, Ohio) in centimeters. The 10-minute ice bag application reduced immediate post-application vertical jump performance and increased immediate post and 20-minute post shuttle run time (p <or= 0.05). A decrease in cocontraction time was observed at 20 minutes post compared with preapplication during the control condition in which no ice bag was applied. Power and functional performance are affected by short-term cryotherapy application. Power and functional performance was impaired immediately and 20 minutes after 10-minute ice bag application to the hamstrings, whereas a shorter duration of ice application had no effect on these tasks.
本研究通过共收缩测试、穿梭跑和单腿垂直跳来衡量，考察了对腘绳肌应用3分钟和10分钟冰袋对功能表现的即时和短期（20分钟）影响。研究纳入了42名（25名女性，17名男性）休闲或大学运动员，他们在测试前6个月下肢无损伤且对冷冻疗法不过敏。共收缩测试和穿梭跑测试的完成时间以秒为单位进行测量。单腿垂直跳使用Vertec（Sports Imports，俄亥俄州哥伦布市）进行测量，单位为厘米。应用10分钟冰袋后，垂直跳的即时表现下降，穿梭跑的即时和20分钟后完成时间增加（p≤0.05）。在未应用冰袋的对照条件下，与应用前相比，共收缩时间在应用后20分钟时缩短。短期应用冷冻疗法会影响力量和功能表现。对腘绳肌应用10分钟冰袋后，即时和20分钟后力量和功能表现受损，而较短的冰敷时间对这些任务没有影响。
