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低强度骑行会影响后续纵跳的肌肉激活模式。

Low-intensity cycling affects the muscle activation pattern of consequent countermovement jumps.

作者信息

Marquez Gonzalo J, Mon Javier, Acero Rafael M, Sanchez Jose A, Fernandez-del-Olmo Miguel

机构信息

Learning and Human Movement Control Group, Facultade de Ciencias do Deporte e a Educación Física (INEF Galicia), Universidad de A Coruña, A Coruña, Spain.

出版信息

J Strength Cond Res. 2009 Aug;23(5):1470-6. doi: 10.1519/JSC.0b013e3181a517f3.

Abstract

Players (eg, basketball, soccer, and football) often use a static bicycle during a game to maintain warming. However, the effectiveness of this procedure has not been addressed in the literature. Thus, it remains unknown whether low-intensity cycling movement can affect explosive movement performance. In this study, 10 male subjects performed countermovement jumps before and after a 15-minutes cycling bout at 35% of their maximal power output. Three sessions were tested for 3 different cadences of cycling: freely chosen cadence, 20% lower than freely chosen cadence (FCC-20%), and 20% higher than freely chosen cadence (FCC+20%). Jump height, kinematics, and electromyogram were recorded simultaneously during the countermovement jumps. The results showed a significant decreasing in the height of countermovement jump after cycling at freely chosen cadence and FCC-20% (p = 0.03 and p = 0.04, respectively), but not for FCC+20% cadences. The electromyographic parameters suggest that changes in the countermovement jump after cycling can be attributed to alteration of the pattern of activation and may be modulated by the preceding cycling cadence. Our study indicates that to avoid a possible negative effect of the cycling in the subsequent explosive movements, a cadence 20% higher than the preferred cadence must be used.

摘要

运动员(如篮球、足球运动员)在比赛期间常使用静态自行车来保持热身。然而,这一做法的有效性在文献中尚未得到探讨。因此,低强度骑行运动是否会影响爆发力运动表现仍不清楚。在本研究中,10名男性受试者在以其最大功率输出的35%进行15分钟骑行前后进行了纵跳。针对3种不同的骑行节奏测试了三个阶段:自由选择的节奏、比自由选择的节奏低20%(FCC - 20%)以及比自由选择的节奏高20%(FCC + 20%)。在纵跳过程中同时记录了跳的高度、运动学和肌电图。结果显示,以自由选择的节奏和FCC - 20%骑行后,纵跳高度显著下降(分别为p = 0.03和p = 0.04),但FCC + 20%节奏时没有下降。肌电图参数表明,骑行后纵跳的变化可归因于激活模式的改变,并且可能受先前骑行节奏的调节。我们的研究表明,为避免骑行对后续爆发力运动产生可能的负面影响,必须使用比偏好节奏高20%的节奏。

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