身体素质更好与消防员更好的空气通风效率相关。
Greater physical fitness is associated with better air ventilation efficiency in firefighters.
作者信息
Gendron P, Freiberger E, Laurencelle L, Trudeau F, Lajoie C
机构信息
Département des sciences de l'activité physique, Université du Québec à Trois-Rivières (UQTR), 3351, boul. des Forges, C.P. 500, Trois-Rivières, Québec, Canada G9A 5H7.
Département des sciences de l'activité physique, Université du Québec à Trois-Rivières (UQTR), 3351, boul. des Forges, C.P. 500, Trois-Rivières, Québec, Canada G9A 5H7.
出版信息
Appl Ergon. 2015 Mar;47:229-35. doi: 10.1016/j.apergo.2014.10.002. Epub 2014 Oct 24.
Firefighting is a hazardous task associated with a heavy workload where task duration may be limited by air cylinder capacity. Increased fitness may lead to better air ventilation efficiency and task duration at a given heavy work intensity. This study compared performance, air ventilation and skeletal muscle oxygen extraction during a maximal graded walking test (GWT), a 10 METS (metabolic equivalent) treadmill test (T10) and a simulated work circuit (SWC). Participants (n = 13) who performed the SWC in a shorter time had significantly lower air cylinder ventilation values on the T10 (r = -0.495), better peak oxygen consumption (r = -0.924) during the GWT and significantly greater skeletal muscle oxygen extraction during the SWC (HbDiff, r = 0.768). These results demonstrate that the fastest participants on the SWC had better air ventilation efficiency that could prolong interventions in difficult situations requiring air cylinder use.
灭火是一项危险任务，工作量大，任务持续时间可能受气瓶容量限制。在给定的高强度工作下，身体素质的提高可能会带来更好的空气通风效率和更长的任务持续时间。本研究比较了最大分级步行测试（GWT）、10代谢当量（METS）跑步机测试（T10）和模拟工作回路（SWC）期间的表现、空气通风和骨骼肌氧摄取情况。在较短时间内完成SWC的参与者（n = 13）在T10上的气瓶通风值显著更低（r = -0.495），在GWT期间的峰值耗氧量更好（r = -0.924），并且在SWC期间骨骼肌氧摄取显著更高（血红蛋白差异，r = 0.768）。这些结果表明，在SWC中速度最快的参与者具有更好的空气通风效率，这可以在需要使用气瓶的困难情况下延长干预时间。
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