The aim of this study was to validate a
O2max protocol designed specifically for the occupational demands of firefighters by incorporating the use of personal protective equipment (PPE).
Career firefighters completed a stage-graded exercise test (GXT) with submaximal square-wave verification bout while wearing PPE (pants and boots) to determine
O2max. Using the self-reported Physical Activity-Rating (PA-R) scale and an estimated nonexercise regression equation of
O2max for comparison to measured.
Twenty-eight male, career firefighters performed the GXT and square-wave bout.
O2 values (mean ± SD) from the GXT and the square-wave verification bout were 41.04 ± 6.98 and 39.74 ± 6.42 mL/kg/min, respectively (ICC = 0.98, typical error = 0.96 mL/kg/min, CV = 2.4%).
Our data suggest an incremental treadmill protocol that incorporates PPE and square-wave verification as an occupational-specific tool to measure cardiovascular fitness in firefighters.
Department of Health, Nutrition and Exercise Sciences, North Dakota State University, Fargo, North Dakota (Drs Dicks, Lyman, Hackney); Department of Education, Health & Behavior Studies, University of North Dakota, Grand Forks, North Dakota (Dr Walch); and Department of Health, Human Performance, and Recreation, Pittsburg State University, Pittsburg, Kansas (Dr Barry).
Address correspondence to: Nathan D. Dicks, MS, NDSU Department 2620, P.O. Box 6050, Fargo, ND 58108-6050 (Nathan.email@example.com).
This work was supported by the Innovative Student Research Award from the Northland Chapter of the American College of Sports Medicine.
The authors have no conflicts of interest.