Centre for Exercise and Sports Science, Deakin University, 221 Burwood Hwy, Melbourne, VIC 3125, Australia.
Appl Ergon. 2013 Mar;44(2):274-7. doi: 10.1016/j.apergo.2012.08.003. Epub 2012 Sep 12.
The aim of this study was to examine the muscle activation of six global muscles during the successful completion of the Pack Hike test (PHT) and compare this to muscle activations during a critical wildfire fighting task. In-field surface electromyography was recorded from eight male wildfire fighters during the PHT and the rakehoe task - a critical wildfire suppression activity. All participants successfully completed the PHT within the 45-min time limit. No significant changes in peak muscle activation levels as well as no significant shifts in median frequency in the six muscle analysed were recorded during the 4.83-km hike. Significantly different peak muscle activation levels were recorded in four of the six muscles tested when the PHT was compared to the rakehoe task. These results suggest the PHT should not be administered in isolation and other tests that specifically challenge upper body muscle endurance should be incorporated into a battery that accurately assesses the job-specific fitness of wildfire fighters.
本研究旨在探讨在成功完成背包徒步测试（PHT）期间六块全身肌肉的肌肉激活情况，并将其与在关键的野外火灾扑救任务期间的肌肉激活情况进行比较。在野外，对 8 名男性野外消防员在 PHT 和耙锄任务（一项关键的野外火灾抑制活动）期间进行了表面肌电图记录。所有参与者都在 45 分钟的时间限制内成功完成了 PHT。在 4.83 公里的徒步过程中，分析的六块肌肉中没有记录到峰值肌肉激活水平的显著变化，也没有记录到中值频率的显著变化。与耙锄任务相比，在测试的六块肌肉中的四块中记录到了显著不同的峰值肌肉激活水平。这些结果表明，不应单独进行 PHT，而应将其他专门挑战上身肌肉耐力的测试纳入电池中，以准确评估野外消防员的特定工作适应性。
