Movement Fundamentals and Clinical Research Centre, Department of Applied Biology and Physiotherapy, Lithuanian Academy of Physical Education, Sporto 6, LT-44221 Kaunas, Lithuania.
Muscle Nerve. 2012 Nov;46(5):799-809. doi: 10.1002/mus.23397. Epub 2012 Sep 19.
In this study, we questioned whether local cooling of muscle or heating involving core and muscle temperatures are the main indicators for force variability.
Ten volunteers performed a 2-min maximum voluntary contraction (MVC) of the knee extensors under control (CON) conditions after passive heating (HT) and cooling (CL) of the lower body.
HT increased muscle and rectal temperatures, whereas CL lowered muscle temperature but did not affect rectal temperature. During 2-min MVC, peak force decreased to a lower level in HT compared with CON and CL experiments. Greater central fatigue was found in the HT experiment, and there was less in the CL experiment than in the CON experiment.
Increased core and muscle temperature increased physiological tremor and the amount and structural complexity of force variability of the exercising muscles, whereas local muscle cooling decreased all force variability variables measured.
在这项研究中，我们质疑局部肌肉冷却或涉及核心和肌肉温度的加热是否是肌肉力量变化的主要指标。
10 名志愿者在被动加热（HT）和冷却（CL）下肢后，在控制（CON）条件下进行 2 分钟最大自主收缩（MVC）的膝关节伸肌。
HT 增加了肌肉和直肠温度，而 CL 降低了肌肉温度，但没有影响直肠温度。在 2 分钟 MVC 期间，与 CON 和 CL 实验相比，HT 实验中峰值力下降到较低水平。HT 实验中发现中枢疲劳更大，而 CL 实验中比 CON 实验中则更小。
核心和肌肉温度升高增加了运动肌肉的生理震颤和力变异性的幅度和结构复杂性，而局部肌肉冷却则降低了所有测量的力变异性变量。
