Muscle Damage and Overreaching During Wildland Firefighter Critical Training

Katherine S. Christison; Shae C. Gurney; Joseph A. Sol; Cassie M. Williamson-Reisdorph; Tiffany S. Quindry; John C. Quindry; Charles L. Dumke

doi:10.1097/JOM.0000000000002149

Muscle Damage and Overreaching During Wildland Firefighter Critical Training

Katherine S. Christison, Shae C. Gurney, Joseph A. Sol, Cassie M. Williamson-Reisdorph, Tiffany S. Quindry, John C. Quindry, Charles L. Dumke

Integrative Physiology and Athletic Training

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Objective: To document the effects of wildland firefighter (WLFF) critical training (CT) on physiologic markers of muscle damage and acute overreaching. Methods: Eighteen male and three female WLFFs were studied during an 11-day CT. Upper-body (US), lower-body (LS) muscle soreness and body weight (BW) were collected daily. Blood was collected on days 1, 4, 8, and 11 to measure creatine kinase (CK), lactate dehydrogenase (LDH), cortisol, and testosterone. Skinfolds were taken on days 1 and 11 to estimate body fat (BF) and lean body weight (LBW). Results: CT resulted in a significant depression in BF and elevation in LBW, while main effects of time were seen in US, LS, CK, LDH, cortisol, and testosterone/cortisol ratio (P < 0.05). Conclusion: These data suggest WLFFs undergo significant physiological stressors resulting in muscle soreness, damage, and possible overreaching during CT.

Original language	English
Pages (from-to)	350-356
Number of pages	7
Journal	Journal of Occupational and Environmental Medicine
Volume	63
Issue number	4
DOIs	https://doi.org/10.1097/JOM.0000000000002149
State	Published - Apr 1 2021

Funding

This work was financially supported by the United States Forest Service (16-CR-11138200-005).

Funders	Funder number
U.S. Forest Service-Retired	16-CR-11138200-005

Keywords

DOMS
creatine kinase
occupational physiology
overreaching
wildland firefighting

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1097/JOM.0000000000002149

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title = "Muscle Damage and Overreaching During Wildland Firefighter Critical Training",

abstract = "Objective: To document the effects of wildland firefighter (WLFF) critical training (CT) on physiologic markers of muscle damage and acute overreaching. Methods: Eighteen male and three female WLFFs were studied during an 11-day CT. Upper-body (US), lower-body (LS) muscle soreness and body weight (BW) were collected daily. Blood was collected on days 1, 4, 8, and 11 to measure creatine kinase (CK), lactate dehydrogenase (LDH), cortisol, and testosterone. Skinfolds were taken on days 1 and 11 to estimate body fat (BF) and lean body weight (LBW). Results: CT resulted in a significant depression in BF and elevation in LBW, while main effects of time were seen in US, LS, CK, LDH, cortisol, and testosterone/cortisol ratio (P < 0.05). Conclusion: These data suggest WLFFs undergo significant physiological stressors resulting in muscle soreness, damage, and possible overreaching during CT.",

keywords = "DOMS, creatine kinase, occupational physiology, overreaching, wildland firefighting",

author = "Christison, {Katherine S.} and Gurney, {Shae C.} and Sol, {Joseph A.} and Williamson-Reisdorph, {Cassie M.} and Quindry, {Tiffany S.} and Quindry, {John C.} and Dumke, {Charles L.}",

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AU - Christison, Katherine S.

AU - Gurney, Shae C.

AU - Sol, Joseph A.

AU - Williamson-Reisdorph, Cassie M.

AU - Quindry, Tiffany S.

AU - Quindry, John C.

AU - Dumke, Charles L.

PY - 2021/4/1

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N2 - Objective: To document the effects of wildland firefighter (WLFF) critical training (CT) on physiologic markers of muscle damage and acute overreaching. Methods: Eighteen male and three female WLFFs were studied during an 11-day CT. Upper-body (US), lower-body (LS) muscle soreness and body weight (BW) were collected daily. Blood was collected on days 1, 4, 8, and 11 to measure creatine kinase (CK), lactate dehydrogenase (LDH), cortisol, and testosterone. Skinfolds were taken on days 1 and 11 to estimate body fat (BF) and lean body weight (LBW). Results: CT resulted in a significant depression in BF and elevation in LBW, while main effects of time were seen in US, LS, CK, LDH, cortisol, and testosterone/cortisol ratio (P < 0.05). Conclusion: These data suggest WLFFs undergo significant physiological stressors resulting in muscle soreness, damage, and possible overreaching during CT.

AB - Objective: To document the effects of wildland firefighter (WLFF) critical training (CT) on physiologic markers of muscle damage and acute overreaching. Methods: Eighteen male and three female WLFFs were studied during an 11-day CT. Upper-body (US), lower-body (LS) muscle soreness and body weight (BW) were collected daily. Blood was collected on days 1, 4, 8, and 11 to measure creatine kinase (CK), lactate dehydrogenase (LDH), cortisol, and testosterone. Skinfolds were taken on days 1 and 11 to estimate body fat (BF) and lean body weight (LBW). Results: CT resulted in a significant depression in BF and elevation in LBW, while main effects of time were seen in US, LS, CK, LDH, cortisol, and testosterone/cortisol ratio (P < 0.05). Conclusion: These data suggest WLFFs undergo significant physiological stressors resulting in muscle soreness, damage, and possible overreaching during CT.

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Muscle Damage and Overreaching During Wildland Firefighter Critical Training

Abstract

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Keywords

UN SDGs

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