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Full-Text Articles in Life Sciences
Metabolic And Cardiovascular Marker Alterations During Critical Training In Wildland Firefighters, Shae Gurney
Metabolic And Cardiovascular Marker Alterations During Critical Training In Wildland Firefighters, Shae Gurney
Graduate Student Theses, Dissertations, & Professional Papers
Introduction: Wildland firefighters (WLFFs) are confronted with numerous physical and mental stressors. Pre-fire season includes an intense 2-week critical training (CT) period; a preparatory phase of multiple activities that can result in injury, illness, and rhabdomyolysis. The purpose of this study was to identify physiologic changes in metabolic, inflammatory, and oxidative stress biomarkers during 2 weeks of CT in WLFFs.
Methods: Eighteen male (29.4 ± 1.1 yr, 182.1 ± 1.6 cm) and three female (26.7 2.6 yr, 169.5 4.2 cm) participants were recruited from a Type I interagency hotshot crew and monitored over their 2-week CT. Fitness was …
Exogenous Fluid Delivery Schedule And Composition On Fluid Balance, Physiologic Strain, And Substrate Use In The Heat, Alejandro M. Rosales
Exogenous Fluid Delivery Schedule And Composition On Fluid Balance, Physiologic Strain, And Substrate Use In The Heat, Alejandro M. Rosales
Graduate Student Theses, Dissertations, & Professional Papers
Introduction: Wildfire suppression is characterized by high total energy expenditures and water turnover rates. Hydration position stands outline hourly fluid intake rates. However, dose interval remains ambiguous. We aimed to determine the effects of micro- and bolus-dosing water (MW, BW) or carbohydrate-electrolyte (MCE, BCE) solutions on fluid balance, heat stress, and carbohydrate oxidation during extended thermal exercise. Methods: Males (n=12), in a repeated measures cross-over design, completed 4, 120-minute treadmill trials (1.3 m.s-1, 5% grade, 33°C, 30%RH) wearing a USFS uniform and 15kg pack. Fluid delivery approximated losses calculated from a pre-experiment familiarization …
Muscle Soreness And Damage During Wildland Firefighter Critical Training, Katherine Sue Christison
Muscle Soreness And Damage During Wildland Firefighter Critical Training, Katherine Sue Christison
Graduate Student Theses, Dissertations, & Professional Papers
Introduction: Wildland firefighters (WLFF) undergo a critical training (CT) period immediately before the firefighting season. The intensity of CT exercise could lead to muscle damage, as previously reported cases of rhabdomyolysis in WLFFs have been documented. This study established the effects of activities performed during a two-week CT period on acute markers of muscle damage in WLFFs.
Methods: 18 male and 3 female Type I Interagency Hotshot WLFFs were studied during a 14-day critical training period. Upper- (US) and lower-body (LS) muscle soreness and daily body weight (BW) scales were collected. Venous blood was collected on Days 1, 4, 8, …