Central Institute for Labour Protection, National Research Institute, Poland.
Int J Occup Saf Ergon. 2012;18(2):233-43. doi: 10.1080/10803548.2012.11076931.
The aim of the study was to investigate the possibility of using infrared (IR) thermography for assessing muscle fatigue during low effort. Three tests at constant levels of load 5, 15 and 30% of maximum voluntary contraction (MVC) lasting 5 min each were performed on a group of 10 men. Temperature and electromyographic (EMG) signal were registered from biceps brachii (BB). Analysis focused on the influence of load on the values and changes in time of muscle temperature. Correlations between temperature and EMG parameters (RMS, MPF and MF) were also analysed. Constant load sustained during the tests resulted in an increase in the temperature of BB. There were statistically significant correlations between temperature and EMG parameters for most subjects. Results of the study suggest that IR thermography can be an alternative or supplementary method for assessing muscle fatigue at low levels of contraction.
本研究旨在探讨在低负荷下使用红外（IR）热成像评估肌肉疲劳的可能性。10 名男性进行了三组持续 5 分钟、负荷水平分别为最大自主收缩（MVC）的 5%、15%和 30%的测试。从肱二头肌（BB）记录温度和肌电图（EMG）信号。分析重点是负荷对肌肉温度的数值和时间变化的影响。还分析了温度与 EMG 参数（RMS、MPF 和 MF）之间的相关性。在测试过程中持续的恒负荷导致 BB 温度升高。对于大多数受试者，温度与 EMG 参数之间存在统计学上显著的相关性。研究结果表明，IR 热成像可以作为评估低收缩水平肌肉疲劳的替代或补充方法。
