Article
Biology
Andrew M. Greenfield, Felipe Gorini Pereira, William R. Boyer, Marc R. Apkarian, Matthew R. Kuennen, Trevor L. Gillum
Summary: The study found that hot water immersion (HWI) as a heat acclimation strategy induced greater thermal strain compared to exercise-heat acclimation (EHA) at equivalent temperatures. However, this greater thermal strain did not result in significant differences in cardiovascular, thermoregulatory, or perceptual variables between the two interventions. This suggests that three sessions of HWI may be a potential means to lower heart rate, core temperature, and perceptual strain during exercise in the heat.
JOURNAL OF THERMAL BIOLOGY
(2021)
Article
Physiology
Wei Zhang, Shoupeng Ren, Xinyan Zheng
Summary: This study investigated the effects of whole-body cold-water immersion (WCWI) and lower-limb cold-water immersion (LCWI) on subsequent exercise performance in a hot environment. The results showed that WCWI during the recovery period attenuated the impairment of agility, sprint, and intermittent-endurance performance, while LCWI only improved agility and sprint performance.
FRONTIERS IN PHYSIOLOGY
(2022)
Review
Physiology
Kate P. Hutchins, Geoffrey M. Minett, Ian B. Stewart
Summary: Whole-body cold water immersion is considered the gold standard treatment for exertional heat stroke, but the guidelines for treatment are being applied to women without validation. Recent evidence suggests that women cool faster than men during cold water immersion, raising concerns of overcooling if the present guidelines are followed.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Leon Chang, Lois Gardner, Carol House, Catherine Daly, Adrian Allsopp, Daniel Roiz de Sa, Marie-Anne Shaw, Philip M. Hopkins
Summary: This study investigated gene expression in male subjects with a history of exertional heat illness or susceptibility to malignant hyperthermia and found a common underlying pathophysiology between these two conditions. The study also showed that heat tolerance tests can elevate expression of inflammatory response genes.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Ecology
Zenon J. Czenze, Marc T. Freeman, Ryno Kemp, Barry van Jaarsveld, Blair O. Wolf, Andrew E. McKechnie
Summary: The study quantified thermoregulation in three larger bird species, showing that they have pronounced evaporative cooling capacity and heat tolerance. Differences in upper critical limits of thermoneutrality and the ratio of evaporative heat loss to metabolic heat production varied significantly among species, displaying diversity in thermoregulatory performance.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2021)
Review
Sport Sciences
Gurpreet Singh, Kyle J. M. Bennett, Lee Taylor, Christopher J. Stevens
Summary: This article reviews the data on core body temperature responses during competitive sports and identifies key factors for practitioners to consider. The findings show that a core body temperature of >= 40 degrees C is not consistently indicative of health risks for athletes in this sample, suggesting the need for additional measures to monitor temperature changes and reduce heat-related injuries.
Article
Sport Sciences
Kirsty A. M. Waldock, Oliver R. Gibson, Rebecca L. Relf, Gregor Eichhorn, Mark Hayes, Peter W. Watt, Neil S. Maxwell
Summary: This study investigated the efficacy of heat acclimation in the young and elderly following exercise, as well as post-exercise hot water immersion heat acclimation. The results showed that heat acclimation induced improvements in thermoregulation, perception, and exercise performance, regardless of age or intervention. Both exercise-induced heat acclimation and post-exercise hot water immersion are considered viable interventions to prepare the elderly for heat stress.
JOURNAL OF SCIENCE AND MEDICINE IN SPORT
(2021)
Article
Veterinary Sciences
Elisabeth-Lidwien J. M. M. Verdegaal, Gordon S. Howarth, Todd J. McWhorter, Catherine J. G. Delesalle
Summary: The study aimed to investigate the suitability of monitoring surface skin temperature (T-sk) as a metric of the thermoregulatory response in exercising horses. The results showed that there was no relationship between T-sk and core temperature (T-c) during exercise and recovery periods, and T-sk monitoring did not provide a reliable proxy for the thermoregulatory response and horse welfare.
FRONTIERS IN VETERINARY SCIENCE
(2022)
Article
Veterinary Sciences
Emily J. Hall, Anne J. Carter, Jude Bradbury, Sian Beard, Sophie Gilbert, Dominic Barfield, Dan G. O'Neill
Summary: Heat-related illness (HRI) is a potentially fatal disorder in dogs. Early and rapid reduction in core body temperature is crucial for treating dogs with HRI. Cold-water immersion and evaporative cooling are recommended treatments, but the study found that only a small percentage of dogs were cooled prior to transport and using the recommended methods. There is a need for clearer messaging to promote optimal management of dogs with HRI.
VETERINARY SCIENCES
(2023)
Article
Zoology
Chloe Chen-Kraus, Njaratiana A. Raharinoro, Richard R. Lawler, Alison F. Richard
Summary: Sifakas in southern Madagascar use tree hugging behavior to regulate body temperature and avoid heat stress in hot and dry environments. This behavior plays a critical role in the thermoregulation of the lemur population.
INTERNATIONAL JOURNAL OF PRIMATOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Sara C. Parnes, Amritha Mallikarjun, Meghan T. Ramos, Tesa A. Stone, Cynthia M. Otto
Summary: This study assessed the effectiveness of two cooling interventions, partial water immersion and isopropyl alcohol application, for working dogs. It found that partial water immersion was more effective in cooling dogs and had better tolerance of use compared to isopropyl alcohol. Further studies are needed to explore the extent of water immersion and the effectiveness of other water-assisted cooling methods for dogs.
Article
Pharmacology & Pharmacy
Jan Daniluk, Thomas Voets
Summary: TRPV1 antagonists have pH-dependent effects on channel inhibition, but their modality selectivity is not strict. The antagonistic efficacy of TRPV1 antagonists is limited at acidic pH, which may restrict their analgesic efficacy in injured tissues.
BRITISH JOURNAL OF PHARMACOLOGY
(2023)
Article
Biology
Timothy P. Rioux, John W. Castellani, Mitchell D. Reed, Stefanie Whalen, Monica Cisternelli, Grace Python, Marion J. Lewandowski, Xiaojiang Xu
Summary: This study validates the Six Cylinder Thermoregulatory Model (SCTM) in prolonged warm water immersion and compares the predicted values with the measured values. The results show that SCTM predicts core temperature and mean skin temperature accurately in 18 and 22 degrees C water for up to 10 h, but may overpredict in 26 degrees C water. Future studies and algorithm development are required to improve water loss prediction as well as core temperature and mean skin temperature prediction in 26 degrees C water.
COMPUTERS IN BIOLOGY AND MEDICINE
(2023)
Article
Public, Environmental & Occupational Health
Jin-young Min, Hyeong-Seong Lee, Yeon-Soo Choi, Kyoung-bok Min
Summary: This study found that Koreans with low income had a higher prevalence of heat- or cold-related illnesses compared to those with high income. The lower income group showed a greater likelihood of heat- or cold-related illnesses, suggesting the need for strategies to reduce the impact of extreme temperature events on vulnerable populations.
Article
Physiology
Elisabeth-Lidwien J. M. M. Verdegaal, Gordon S. Howarth, Todd J. McWhorter, Berit Boshuizen, Samantha H. Franklin, Carmen Vidal Moreno de Vega, Stacey E. Jonas, Louise E. Folwell, Catherine J. G. Delesalle
Summary: Proper policies on recognizing and preventing equine heat stress are crucial in the face of global warming. Monitoring individual variability in thermoregulation during exercise is essential to safeguard horse welfare and maximize performance.
FRONTIERS IN PHYSIOLOGY
(2021)
Article
Sport Sciences
J. Luke Pryor, Emily R. Burbulys, Hayley J. Root, Riana R. Pryor
Summary: This study evaluated the influence of different athletic surfaces on movement technique and found differences in lower extremity movement technique and injury risk between surface types and sexes. Therefore, athletic playing surfaces should be considered when assessing movement technique and implementing injury prevention programs.
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2022)
Article
Sport Sciences
J. Luke Pryor, Robert Garcia Leija, Jacobo Morales, Adam W. Potter, David P. Looney, Riana R. Pryor, David Hostler, Kristen C. Cochrane-Snyman
Summary: Verification tests in a hot environment confirmed the VO2max obtained from a graded exercise test (GXT) in nearly all participants, indicating strong utility. However, there was a significant difference in VO2max between the verification test and GXT, with wide variability and potential reliability issues observed. Recommendations for work rate and recovery protocol between tests were provided to enhance test-retest reliability in a hot environment.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2021)
Article
Sport Sciences
Riana R. Pryor, J. Luke Pryor, Lesley W. Vandermark, Elizabeth L. Adams, Rachel M. Brodeur, Lawrence E. Armstrong, Elaine C. Lee, Carl M. Maresh, Douglas J. Casa
Summary: This study suggests that five days of heat acclimation can reduce cardiovascular strain during consecutive exercise in the heat on the sixth day, but has no significant effect on thermoregulatory strain.
JOURNAL OF SCIENCE AND MEDICINE IN SPORT
(2021)
Article
Physiology
W. Hayden Hess, J. Jocelyn Stooks, B. Tyler Baker, L. Christopher Chapman, D. Blair Johnson, R. Riana Pryor, P. David Basile, C. Jacob Monroe, David Hostler, J. Zachary Schlader
Summary: This study found that the risk of kidney injury is significantly increased during prolonged exposure to high wet bulb temperatures (34 degrees C) compared to current lower wet bulb temperatures (31 degrees C). This increase may be due to oxidative stress and inflammatory processes.
JOURNAL OF APPLIED PHYSIOLOGY
(2022)
Article
Rehabilitation
Victoria A. Parr, Marie L. Pettitt, Ryan Krzyzanowicz, Sarah Krzyzanowicz, Riana R. Pryor
Summary: Compensated turnout is associated with increased lower-extremity injuries, low back pain, and number of injuries in dancers, while anatomical or functional turnout has no relationship with lower-extremity injuries.
JOURNAL OF SPORT REHABILITATION
(2022)
Article
Medicine, General & Internal
Courtney E. Wheelock, David P. Looney, Adam W. Potter, Riana R. Pryor, J. Luke Pryor, John Florian, David Hostler
Summary: This study examined the effects of heat acclimation strategies on heart rate, core temperature, and time to exhaustion during cycling exercise in warm water conditions. The results showed that underwater exercise performance did not differ between the two acclimation strategies. Passive acclimation to a higher water temperature may improve thermoregulatory and cardiovascular responses to exercise in warm water.
Article
Sport Sciences
Riana R. Pryor, J. Luke Pryor, Brendon P. McDermott
Summary: Individualized patient care is considered ideal for treating patients with exertional heat stroke (EHS) and athletic injuries. The best-practice recommendation for EHS treatment is cold-water immersion (CWI), but the effectiveness may vary due to individual factors. It is unclear whether personalized treatment plans can optimize the outcome of CWI.
JOURNAL OF ATHLETIC TRAINING
(2022)
Article
Environmental Sciences
Nathan E. Bartman, Jonathan R. Larson, David P. Looney, Blair D. Johnson, Zachary J. Schlader, David Hostler, Riana R. Pryor
Summary: This study aimed to determine whether the recommendations from the National Institute for Occupational Safety and Health (NIOSH) could prevent excessive core temperature and body mass loss during heavy-intensity work in the heat. The findings showed that during 2 hours of continuous heavy-intensity work, 75% of participants did not reach a core temperature of 38 degrees Celsius, and 88% did not reach a body mass loss of 2%, in accordance with the NIOSH recommendations.
JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE
(2022)
Article
Ergonomics
Elizabeth M. Lavoie, Lucas D. Holden, Sai V. Vangala, William R. Santee, Riana R. Pryor, Karl E. Friedl, Adam W. Potter, David P. Looney
Summary: The purpose of this study was to compare the physiological responses to walking in modern military combat boots versus running shoes. The results showed that wearing combat boots during walking increased the oxygen costs by 6-9% and other cardiorespiratory indicators by 2.7-9.9%. This highlights the trade-off between the versatility and protection of military footwear and the economy of traditional running shoes.
Article
Environmental Sciences
Riana R. R. Pryor, Jonathan R. R. Larson, Lesley W. W. Vandermark, Blair D. D. Johnson, Zachary J. J. Schlader
Summary: The impact of water consumption volume and frequency on hydration biomarkers during work in the heat was investigated. The study found that there were no differences in body mass between trials at any time point. The percent change in plasma volume and plasma osmolality were not significantly different between treatments. However, urine osmolality and free water clearance were lower and urine volume was greater with repeated consumption of 500mL of water compared to 237mL, indicating greater hydration efficiency with the latter. Thirst, gastrointestinal symptoms, body temperatures, and heart rate did not differ between treatments. Drinking larger, less frequent water boluses or drinking smaller, more frequent water boluses are both effective strategies for maintaining hydration in males working in the heat.
JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE
(2023)
Article
Marine & Freshwater Biology
Zachary J. Schlader, Blair D. Johnson, Riana R. Pryor, Jocelyn Stooks, Brett Siders, Brian M. Clemency, David Hostler
Summary: This study tested the impact of elevated dry bulb temperature on thermal discomfort, mood, and physical symptoms of heat illness in a high humidity environment. The results showed that higher dry bulb temperature led to greater thermal discomfort, worsened mood, and exacerbated physical symptoms of heat illness.
UNDERSEA AND HYPERBARIC MEDICINE
(2022)
Article
Marine & Freshwater Biology
Daniel K. Sweet, Courtney E. Wheelock, Jacqueline Schwob, Jocelyn Stooks, Brian M. Clemency, Erika St. James, Riana R. Pryor, Zachary J. Schlader, Dave Hostler
Summary: This study aims to explore the heat stress situation when the pressurized rescue module is disabled in a disabled submarine scenario. The results show that heart rate and body temperature increase with rising dry bulb temperature, leading to severe dehydration and posing a threat to the health of the occupants.
UNDERSEA AND HYPERBARIC MEDICINE
(2022)
Article
Marine & Freshwater Biology
Courtney E. Wheelock, David P. Looney, Adam W. Potter, Riana R. Pryor, J. Luke Pryor, John Florian, David Hostler
Summary: The purpose of this study was to evaluate exercise endurance in warm- and hot-water conditions in divers habituated to wet or dry heat. The results showed that endurance decreased with increased water temperature but was not different between divers habituated to wet or dry heat.
UNDERSEA AND HYPERBARIC MEDICINE
(2022)
Article
Sport Sciences
Melissa Kay Kossman, Andrew J. McCrae, Riana R. Pryor, Simone C. Frank, Ryan Hayford, Paige C. Logan, Margaret G. Moakley, Johna K. Register-Mihalik, Zachary Y. Kerr
Summary: The study aimed to identify barriers and facilitators encountered by high school athletic trainers when implementing the NATA-IATF guidelines, with factors such as perceived stakeholder access, role, capability, school culture, logistical support, resources, physical environment, and consistency of guidelines influencing successful implementation. Participants discussed their experiences and circumstances within each category, highlighting the need to target multiple levels of influence to improve compliance and implementation of the guidelines.
JOURNAL OF ATHLETIC TRAINING
(2021)
