Paschalis V, Koutedakis Y, Baltzopoulos V, Mougios V, Jamurtas A Z, Theoharis V
Department of Physical Education and Sports Sciences, Thessaly University, Karies 42100, Trikala, Greece.
Int J Sports Med. 2005 Dec;26(10):827-31. doi: 10.1055/s-2005-837461.
Published information on aspects related to muscle damage and running economy is both limited and contradictory. To contribute to the current debate, we investigated the effects of an eccentric exercise session on selected muscle damage indices in relation to running economy using 10 (mean age 23 +/- 1 years) healthy male volunteers. The eccentric exercise session consisted of 120 (12 x 10) maximal voluntary repetitions by each randomly selected leg at the angular velocity of 1.05 rad . s (-1). Muscle damage (creatine kinase, delayed onset muscle soreness, range of movement, and eccentric, concentric and isometric [at 60 degrees and 110 degrees knee flexion] peak torque) and running economy (oxygen consumption, pulmonary ventilation, respiratory exchange ratio and breaths per minute during treadmill running at 133 and 200 m . min (-1)) indicators, were assessed pre-, 24-, 48-, 72- as well as 96-h after exercise. All muscle damage indicators revealed significant changes at almost all time-points of assessment compared to pre-exercise data (p < 0.05). However, none of the running economy parameters disclosed any significant change throughout the study (p > 0.05). It was concluded that changes in muscle damage and muscle performance as measured in this study are not reflected by concomitant alterations in running economy at submaximal intensities.
已发表的有关肌肉损伤与跑步经济性相关方面的信息有限且相互矛盾。为了对当前的争论有所贡献，我们使用10名（平均年龄23±1岁）健康男性志愿者，研究了一次离心运动对与跑步经济性相关的选定肌肉损伤指标的影响。离心运动包括每条随机选择的腿以1.05弧度·秒（-1）的角速度进行120次（12×10）最大自主重复动作。在运动前、运动后24小时、48小时、72小时以及96小时评估肌肉损伤（肌酸激酶、延迟性肌肉酸痛、活动范围以及离心、向心和等长[膝关节屈曲60度和110度时]峰值扭矩）和跑步经济性（跑步机以133和200米·分钟（-1）速度跑步时的耗氧量、肺通气量、呼吸交换率和每分钟呼吸次数）指标。与运动前数据相比，所有肌肉损伤指标在几乎所有评估时间点均显示出显著变化（p<0.05）。然而，在整个研究过程中，没有一个跑步经济性参数显示出任何显著变化（p>0.05）。得出的结论是，本研究中测量的肌肉损伤和肌肉性能的变化并未在次最大强度下的跑步经济性的相应改变中得到体现。
