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Article type: Research Article
Authors: Gnacinski, Stacy L.a; b; * | Ebersole, Kyle T.a | Cornell, David J.a | Mims, Jasonc | Zamzow, Aarond | Meyer, Barbara B.b
Affiliations: [a] Human Performance & Sport Physiology Laboratory, University of Wisconsin-Milwaukee, College of Health Sciences, Department of Kinesiology — Integrative Health Care & Performance Unit, Milwaukee, WI, USA | [b] Laboratory for Sport Psychology & Performance Excellence, University of Wisconsin-Milwaukee, College of Health Sciences, Department of Kinesiology — Integrative Health Care & Performance Unit, Milwaukee, WI, USA | [c] City of Milwaukee Fire Department, Milwaukee, WI, USA | [d] City of Madison Fire Department, Madison, WI, USA
Correspondence: [*] Address for correspondence: Stacy L. Gnacinski, Human Performance & Sport Physiology Laboratory, University of Wisconsin-Milwaukee, College of Health Sciences, Department of Kinesiology — Integrative Health Care & Performance Unit, Pavilion - Physical Therapy & Athletic Training, Suite 350, 3409 N. Downer Avenue, Milwaukee, WI 53211, USA. Tel.:+1 414 229 6717; Fax:+1 414 229 3366; E-mail: gnacins4@uwm.edu.
Abstract: BACKGROUND: Firefighters’ cardiovascular fitness remains a foremost concern among fire departments and organizations, yet very little research has been conducted to examine the cardiovascular fitness adaptations that occur during firefighter training academies. OBJECTIVE: To describe the cardiovascular adaptations observed among firefighter recruits during firefighter training academies using measures of estimated maximal oxygen uptake (VO2max) and heart rate recovery (ΔHR). METHODS: Firefighter recruits (n = 41) enrolled in a 16-week firefighter training academy completed a 5-minute step test during the first, eighth, and sixteenth week of training. Repeated measures analysis of variance (RM ANOVA) calculations were conducted to determine changes in estimated VO2max and ΔHR. RESULTS: Results of the RM ANOVA calculations revealed that mean estimated VO2max and mean ΔHR differed significantly between time points: F(2, 80) = 75.525, p < 0.001, and F(2, 80) = 4.368, p = 0.016, respectively. No significant changes were observed in mean estimated VO2max and mean ΔHR beyond the eighth week of training. No significant relationship was identified between estimated VO2max and ΔHR. CONCLUSIONS: Although firefighter recruits’ estimated VO2max and ΔHR change significantly over the course of the firefighter training academy, the measures may not be equal predictors of cardiovascular fitness.
Keywords: Occupational health, heart rate recovery, maximal oxygen uptake
DOI: 10.3233/WOR-162266
Journal: Work, vol. 54, no. 1, pp. 43-50, 2016
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