Perroni Fabrizio, Guidetti Laura, Cignitti Lamberto, Baldari Carlo
School of Exercise and Sport Sciences (SUISM), Department of Medical Sciences, University of Turin, Turin, Italy.
Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", Rome, Italy.
PLoS One. 2015 Mar 12;10(3):e0119757. doi: 10.1371/journal.pone.0119757. eCollection 2015.
During fire emergencies, firefighters wear personal protective devices (PC) and a self-contained breathing apparatus (S.C.B.A.) to be protected from injuries. The purpose of this study was to investigate the differences of aerobic level in 197 firefighters (age: 34±7 yr; BMI: 24.4±2.3 kg.m-2), evaluated by a Queen's College Step field Test (QCST), performed with and without fire protective garments, and to analyze the differences among age groups (<25 yr; 26-30 yr, 31-35 yr, 36-40 yr and >40 yr). Variance analysis was applied to assess differences (p < 0.05) between tests and age groups observed in absolute and weight-related values, while a correlation was examined between QCST with and without PC+S.C.B.A. The results have shown that a 13% of firefighters failed to complete the test with PC+S.C.B.A. and significant differences between QCST performed with and without PC+S.C.B.A. in absolute (F(1,169) = 42.6, p < 0.0001) and weight-related (F(1,169) = 339.9, p < 0.0001) terms. A better correlation has been found in L•min-1 (r=0.67) than in ml•kg-1•min-1 (r=0.54). Moreover, we found significant differences among age groups both in absolute and weight-related values. The assessment of maximum oxygen uptake of firefighters in absolute term can be a useful tool to evaluate the firefighters' cardiovascular strain.
在火灾紧急情况下，消防员穿戴个人防护装备（PC）和自给式呼吸器（S.C.B.A.）以保护自己免受伤害。本研究的目的是调查197名消防员（年龄：34±7岁；体重指数：24.4±2.3kg·m⁻²）在穿着和不穿着防火服的情况下，通过女王学院阶梯试验（QCST）评估的有氧水平差异，并分析不同年龄组（<25岁；26 - 30岁、31 - 35岁、36 - 40岁和>40岁）之间的差异。采用方差分析来评估在绝对和与体重相关的值中观察到的测试与年龄组之间的差异（p<0.05），同时检查了穿着和不穿着PC + S.C.B.A.时的QCST之间的相关性。结果表明，13%的消防员未能穿着PC + S.C.B.A.完成测试，并且在绝对（F(1,169)=42.6，p<0.0001）和与体重相关（F(1,169)=339.9，p<0.0001）方面，穿着和不穿着PC + S.C.B.A.进行的QCST之间存在显著差异。在L·min⁻¹（r = 0.67）中发现的相关性比在ml·kg⁻¹·min⁻¹（r = 0.54）中更好。此外，我们发现不同年龄组在绝对和与体重相关的值方面均存在显著差异。以绝对值评估消防员的最大摄氧量可以成为评估消防员心血管负荷的有用工具。
