An air consumption test (ACT) is a physical ability test used in the fire service. The purpose of this study was to compare demographics and physiological differences between slow versus fast performers on an ACT. 160 career firefighters had air consumption, total task time, body mass index (BMI), peak heart rate (HR), body fat percentage (BF%), and oxygen consumption (VO) measured. -means clustering was used to dichotomize between slow and fast groups during an ACT. Independent samples -tests and Cohen's measures of effect size were used to examine differences between groups. There were no significant differences in groups for age ( = −1.05, = 0.30, = 0.17), BMI ( = −1.85, = 0.07, = 0.32), or HR ( = 0.99, = 0.32, = 0.16). There were significant differences between groups for BF% ( = −3.35, < 0.01, = 0.57), relative ( = 3.52, < 0.01, = 0.58) and absolute VO ( = 4.29, < 0.01, = 0.68), air consumption ( = −4.87, < 0.01, = 0.81), and total task time ( = −15.04, < 0.01, = 2.58).

中文翻译：

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消防员空气消耗测试中慢速和快速执行者的特征

空气消耗测试（ACT）是消防部门使用的体能测试。本研究的目的是比较 ACT 中慢速和快速表演者之间的人口统计和生理差异。测量了 160 名职业消防员的空气消耗量、总任务时间、体重指数 (BMI)、峰值心率 (HR)、体脂百分比 (BF%) 和耗氧量 (VO)。-均值聚类用于在 ACT 期间区分慢速组和快速组。独立样本检验和科恩效应大小测量用于检查组间差异。各组之间的年龄（= -1.05，= 0.30，= 0.17）、BMI（= -1.85，= 0.07，= 0.32）或HR（= 0.99，= 0.32，= 0.16）没有显着差异。各组之间的 BF%（= −3.35，< 0.01，= 0.57）、相对（= 3.52，< 0.01，= 0.58）和绝对 VO（= 4.29，< 0.01，= 0.68）、空气消耗量（= −4.87，< 0.01，= 0.81），以及总任务时间（= −15.04，< 0.01，= 2.58）。