Key points are not available for this paper at this time.
Objectives To determine the impact of cardiorespiratory fitness (CRF) on physiological and performance outcomes during a 120-m vertical high-rise ascent in firefighters with CRF levels at or above (higher-fit) and below (lower-fit LF) the national recommended minimum physical employment standard (V˙O 2 max 42.3 mL·kg −1 ·min −1 ). Methods Twenty-eight firefighters completed two high-rise firefighting trials (continuous and discontinuous ascent with predetermined 1-minute rest breaks). Task time, heart rate, ratings of perceived exertion, core body temperature, and thermal comfort were recorded at predetermined elevations. Results Task time was significantly longer in both trials for the LF group. Ratings of perceived exertion and thermal comfort were also significantly higher in the LF group, with three times more LF firefighters being unable to complete the ascent without sounding their low-air alarm. Conclusions Higher CRF improves performance and efficiency during stair-climbing in simulated high-rise firefighting tasks.
Stevenson et al. (Thu,) studied this question.