Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB, T6G 2H9, Canada.
Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB, T6G 2H9, Canada.
Appl Ergon. 2018 Apr;68:313-318. doi: 10.1016/j.apergo.2017.12.010. Epub 2017 Dec 29.
This study investigated physiological responses and performance during three separate exercise challenges (Parts I, II, and III) with wildland firefighting work clothing ensemble (boots and coveralls) and a 20.4 kg backpack in four conditions: U-EX (no pack, exercise clothing); L-EX (pack, exercise clothing); U-W (no pack, work clothing); and, L-W (pack and work clothing). Part I consisted of randomly-ordered graded exercise tests, on separate days, in U-EX, L-EX and L-W conditions. Part II consisted of randomly-ordered bouts of sub-maximal treadmill exercise in the four conditions. In Part III, subjects completed, in random-order on separate days, 4.83 km Pack Tests in L-EX or L-W conditions. In Part I, peak oxygen uptake was reduced (p < .05) in L-W. In Part II, mass-specific oxygen uptake was significantly higher in both work clothing conditions. In Part III, Pack Test time was slower (p < .05) in L-W. These results demonstrate the negative impact of work clothing and load carriage on physiological responses to exercise and performance.
本研究在四种条件下（U-EX（无背包，运动服）；L-EX（背包，运动服）；U-W（无背包，工作服）和 L-W（背包和工作服））使用野外消防工作服套装（靴子和工作服）和 20.4kg 背包，对三个独立的运动挑战（第 I、II 和 III 部分）期间的生理反应和表现进行了研究。第 I 部分包括在 U-EX、L-EX 和 L-W 条件下，分别在不同的日子里进行随机顺序的分级运动测试。第 II 部分包括在四种条件下随机进行的亚最大跑步机运动。在第 III 部分中，受试者在不同的日子里分别以随机顺序完成了 L-EX 或 L-W 条件下的 4.83km 背包测试。在第 I 部分中，L-W 条件下的峰值摄氧量降低（p<.05）。在第 II 部分中，工作服条件下的单位质量耗氧量显著更高。在第 III 部分中，L-W 条件下的背包测试时间较慢（p<.05）。这些结果表明工作服和负载对运动和表现的生理反应有负面影响。
