A5061045091- Thermoregulation and physiological responses
- Exercise and Physiological Responses
- Sports Performance and Training
- Infrared Thermography in Medicine
- Muscle metabolism and nutrition
- Climate Change and Health Impacts
- Sports injuries and prevention
- Cardiovascular and exercise physiology
- Thermal Regulation in Medicine
- Body Composition Measurement Techniques
- Cardiovascular Effects of Exercise
- Flow Experience in Various Fields
- Diet and metabolism studies
- Heart Rate Variability and Autonomic Control
- Cardiovascular Health and Disease Prevention
- Muscle and Compartmental Disorders
- Cardiac Arrest and Resuscitation
- Spaceflight effects on biology
- Dialysis and Renal Disease Management
- Textile materials and evaluations
- High Altitude and Hypoxia
- Shoulder Injury and Treatment
- Occupational Health and Performance
- Color perception and design
- Adipose Tissue and Metabolism
University of Arkansas at Fayetteville
2015-2024
Arizona State University
2022
Sports Concussion Institute
2022
Weber State University
2020
Gatorade Sports Science Institute
2007-2018
McDermott International (United States)
2018
Arkansas Department of Health
2017
University of Connecticut
2006-2016
University of North Texas
2011-2016
Midwestern State University
2011-2016
Objective: To present evidence-based recommendations that promote optimized fluid-maintenance practices for physically active individuals. Background: Both a lack of adequate fluid replacement (hypohydration) and excessive intake (hyperhydration) can compromise athletic performance increase health risks. Athletes need access to water prevent hypohydration during physical activity but must be aware the risks overdrinking hyponatremia. Drinking behavior modified by education, accessibility,...
The present study assessed the effects of mild dehydration on cognitive performance and mood young males. A total twenty-six men (age 20·0 ( sd 0·3) years) participated in three randomised, single-blind, repeated-measures trials: exercise-induced plus a diuretic (DD; 40 mg furosemide); placebo containing no (DN); exercise while maintaining euhydration (EU; control condition). Each trial included min treadmill walks at 5·6 km/h, 5 % grade 27·7°C environment. comprehensive computerised...
To present recommendations for the prevention and screening, recognition, treatment of most common conditions resulting in sudden death organized sports.
Authors of most field studies have not observed decrements in physiologic function and performance with increases dehydration, although authors well-controlled laboratory consistently reported this relationship. Investigators these did control exercise intensity, a known modulator body core temperature.To directly examine the effect moderate water deficit on responses to various intensities warm outdoor setting.Semirandomized, crossover design.Field setting.Seventeen distance runners (9 men,...
Abstract Context: When assessing exercise hyperthermia outdoors, the validity of certain commonly used body temperature measuring devices has been questioned. A controlled laboratory environment is generally less influenced by environmental factors (eg, ambient temperature, solar radiation, wind) than an outdoor setting. The these in a may be more acceptable. Objective: To assess and reliability compared with rectal individuals exercising controlled, high indoor setting then resting cool...
Abstract Context: In hot environments, the American football uniform predisposes athletes to exertional heat exhaustion or exercise-induced hyperthermia at threshold for stroke (rectal temperature [Tre] > 39°C). Objective: To evaluate differential effects of 2 configurations on exercise, thermal, cardiovascular, hematologic, and perceptual responses in a hot, humid environment. Design: Randomized controlled trial. Setting: Human Performance Laboratory. Patients Other Participants: Ten...
On October 22-23, 2008, an ACSM Roundtable was convened at the Uniformed Services University (Bethesda, MD) to discuss return-to-play or return-to-duty for people who have experienced exertional heat illness (EHI) and develop consensus-based recommendations. The conference assembled experts from civilian sports medicine community Department of Defense relevant EHI issues, such as potential long-term consequences, concept thermotolerance, role thermal tolerance testing in decisions. Although...
Abstract Context: Previous researchers have not investigated the thermoregulatory responses to multiple consecutive days of American football in adolescents. Objective: To examine and hydration high school players during formal preseason practices. Design: Observational study. Setting: Players practiced outdoors late August once per day on 1 through 5, twice 6 7, 8 10. Maximum wet bulb globe temperature averaged 23 ± 4°C. Patients or Other Participants: Twenty-five heat-acclimatized...
Hyperthermia is common among athletes and in a variety of environments. The purpose this study was to evaluate the effectiveness cooling methods on core body temperature, heart rate (HR), perceptual readings individuals after exercise. Sixteen subjects (age: 24 ± 6 years, height: 182 7 cm, weight: 74.03 9.17 kg, fat: 17.08 6.23%) completed 10 exercise sessions warm conditions (WBGT: 26.64 4.71°C) followed by different methods. Cooling included cold water immersion (CWI), shade, Port-a-Cool®...
Context: Recommended treatment for exertional heat stroke includes whole-body cold-water immersion (CWI). However, remote locations or monetary spatial restrictions can challenge the feasibility of CWI. Thus, development a modified, portable CWI method would allow optimal in presence these challenges. Objective: To determine cooling rate modified (tarp-assisted with oscillation [TACO]) after hyperthermia. Design: Randomized, crossover controlled trial. Setting: Environmental chamber...
The purpose of this consensus document was to develop feasible, evidence-based occupational heat safety recommendations protect the US workers that experience stress. Heat were created worker health and avoid productivity losses associated with Recommendations tailored be utilized by managers, industrial hygienists, employers who bear responsibility for implementing plans. An interdisciplinary roundtable comprised 51 experts assembled create a narrative review summarizing current data gaps...
Previous research has indicated that despite awareness of the current literature on recommended prevention and care exertional heat stroke (EHS), certified athletic trainers (ATs) acknowledge failure to follow those recommendations.To investigate knowledge, attitudes, practices ATs regarding recognition treatment EHS.Cross-sectional study.Online survey.We obtained a random sample e-mail addresses for 1000 high school collegiate contacted these individuals with invitations participate. A...
Stearns, RL, Casa, DJ, Lopez, RM, McDermott, BP, Ganio, MS, Decher, NR, Scruggs, IC, West, AE, Armstrong, LE, and Maresh, CM. Influence of hydration status on pacing during trail running in the heat. J Strength Cond Res 23(9): 2533-2541, 2009-The purpose this study was to determine influence runners heat (wet bulb globe temperature = 26.2 ± 1.8°C). A randomized, crossover design used participation occurred within a 2-week period. Seventeen competitive, well-trained distance (9 men, 8 women,...
We investigated the ergogenic effects of betaine (B) supplementation on strength and power performance.Twelve men (mean +/- SD age, 21 3 yr; mass, 79.1 10.7 kg) with a minimum months resistance training completed two 14-day experimental trials separated by washout period, in balanced, randomized, double-blind, repeated measures, crossover design. Prior to following 14 days twice daily B or placebo (P) supplementation, subjects consecutive (D1 D2) standardized high intensity strength/power...
In January 2012, the National Athletic Trainers' Association, along with Strength and Conditioning convened a meeting in Colorado Springs, Colorado. Its purpose was to hold an interdisciplinary forum gather input address sudden death collegiate conditioning sessions. Based on these discussions, writing group drafted following recommendations. To date, best practices have been endorsed by American College of Emergency Physicians, Sports Medicine, Medical Society for Osteopathic Academy...
Context: Previous field research has not identified sweat rates (SR), fluid consumption (FC), or the efficacy of an educational intervention (EI) for youth during football camp. Objective: To measure hydration status and rehydration performance examine EI using these data. Design: Observational with randomized comparison. Participants: Thirty-three boys (mean ± SD: 12 2 y, 52.9 13.6 kg, 156 cm) volunteered a 5-d camp 3 (~2-h) sessions per day (WBGT: 25.6 0.5°C). Main Outcome Measures:...
Armstrong, LE, Casa, DJ, Emmanuel, H, Ganio, MS, Klau, JF, Lee, EC, Maresh, CM, McDermott, BP, Stearns, RL, Vingren, JL, Wingo, JE, Williamson, KH, and Yamamoto, LM. Nutritional, physiological, perceptual responses during a summer ultraendurance cycling event. J Strength Cond Res 26(2): 307–318, 2012—Despite the rapid growth of mass participation road cycling, little is known about dietary, metabolic, behavioral cyclists. This investigation describes physiological responses, ratings, energy...
Abstract Context: The protective equipment worn during American football has been shown to increase thermal strain; however, the perception of this increased heat not examined. Objective: To evaluate perceptual responses players while wearing different uniforms exercise in and how these may be used monitor athlete safety. Design: Randomized controlled trial. Setting: Human Performance Laboratory. Patients or Other Participants: Ten men with more than 3 years competitive experience as linemen...