keyword
https://read.qxmd.com/read/38446190/gh-and-igf-1-in-skin-interstitial-fluid-and-blood-are-associated-with-heat-loss-responses-in-exercising-young-adults
#21
JOURNAL ARTICLE
Gulinu Maimaituxun, Tatsuro Amano, Glen P Kenny, Toby Mündel, Masanobu Kajiki, Kaname Tagawa, Akira Katagiri, Yoko Tanabe, Koichi Watanabe, Takeshi Nishiyasu, Narihiko Kondo, Naoto Fujii
PURPOSE: Sweat glands and cutaneous vessels possess growth hormone (GH) and insulin-like growth factor 1 (IGF-1) receptors. Here, we assessed if exercise increases GH and IGF-1 in skin interstitial fluid, and whether baseline and exercise-induced increases in GH and IGF-1 concentrations in skin interstitial fluid/blood are associated with heat loss responses of sweating and cutaneous vasodilation. METHODS: Sixteen young adults (7 women) performed a 50-min moderate-intensity exercise bout (50% VO2peak ) during which skin dialysate and blood samples were collected...
March 6, 2024: European Journal of Applied Physiology
https://read.qxmd.com/read/38446167/locally-applied-heat-stress-during-exercise-training-may-promote-adaptations-to-mitochondrial-enzyme-activities-in-skeletal-muscle
#22
JOURNAL ARTICLE
Ed Maunder, Andrew King, Jeffrey A Rothschild, Matthew J Brick, Warren B Leigh, Christopher P Hedges, Troy L Merry, Andrew E Kilding
There is some evidence for temperature-dependent stimulation of mitochondrial biogenesis; however, the role of elevated muscle temperature during exercise in mitochondrial adaptation to training has not been studied in humans in vivo. The purpose of this study was to determine the role of elevating muscle temperature during exercise in temperate conditions through the application of mild, local heat stress on mitochondrial adaptations to endurance training. Eight endurance-trained males undertook 3 weeks of supervised cycling training, during which mild (~ 40 °C) heat stress was applied locally to the upper-leg musculature of one leg during all training sessions (HEAT), with the contralateral leg serving as the non-heated, exercising control (CON)...
March 6, 2024: Pflügers Archiv: European Journal of Physiology
https://read.qxmd.com/read/38435910/impact-of-spencer-technique-on-pain-range-of-motion-and-functional-disability-in-patients-with-frozen-shoulder-a-pilot-study
#23
JOURNAL ARTICLE
Pratik Phansopkar, Moh'd Irshad Qureshi
Background and objective The shoulder is the most flexible ball- and socket-type joint in the human body. The pathological condition that can commonly affect this joint is the frozen shoulder. This condition is marked by pain and stiffness in the area surrounding the shoulder complex. This leads to difficulty in doing the daily activities of living. Exercise and physical therapy are mostly recommended to decrease pain and improve and maintain the range of motion (ROM). Mainly traditional techniques such as Mulligans, Maitland, and Kaltenborn are used, along with electrotherapy and exercises, for the treatment of this condition...
January 2024: Curēus
https://read.qxmd.com/read/38433124/heat-production-during-exercise-in-pregnancy-discerning-the-contribution-of-total-body-weight
#24
JOURNAL ARTICLE
Nicholas O'Rourke, Sheila Dervis, Danilo F da Silva, Carla Geurts, François Haman, Kristi Bree Adamo
Studies have reported enhanced thermoregulatory function as pregnancy progresses; however, it is unclear if differences in thermoregulation are attributed to weight gain or other physiological changes. This study aimed to determine if total body weight will influence thermoregulation (heat production (Hprod )), heart rate, and perceptual measurements in response to weight-bearing exercise during early to late pregnancy. A cross-sectional design of healthy pregnant women at different pregnancy time points (early, T1; middle, T2; late, T3) performed a 7-stage weight-bearing incremental exercise protocol...
March 4, 2024: Pflügers Archiv: European Journal of Physiology
https://read.qxmd.com/read/38432569/the-superblock-model-a-review-of-an-innovative-urban-model-for-sustainability-liveability-health-and-well-being
#25
REVIEW
Mark Nieuwenhuijsen, Audrey de Nazelle, Marta Cirach Pradas, Carolyn Daher, Angel M Dzhambov, Cynthia Echave, Stefan Gössling, Tamara Iungman, Haneen Khreis, Nicolina Kirby, Sasha Khomenko, Ulrich Leth, Florian Lorenz, Vlatka Matkovic, Johannes Müller, Laia Palència, Evelise Pereira Barboza, Katherine Pérez, Lambed Tatah, Jernej Tiran, Cathryn Tonne, Natalie Mueller
INTRODUCTION: Current urban and transport planning practices have significant negative health, environmental, social and economic impacts in most cities. New urban development models and policies are needed to reduce these negative impacts. The Superblock model is one such innovative urban model that can significantly reduce these negative impacts through reshaping public spaces into more diverse uses such as increase in green space, infrastructure supporting social contacts and physical activity, and through prioritization of active mobility and public transport, thereby reducing air pollution, noise and urban heat island effects...
March 1, 2024: Environmental Research
https://read.qxmd.com/read/38430262/reliability-and-validity-of-the-mx3-portable-sweat-sodium-analyser-during-exercise-in-warm-conditions
#26
JOURNAL ARTICLE
Harry A Brown, Brad Clark, Julien D Périard
PURPOSE: Accurately measuring sweat sodium concentration ([Na+ ]) in the field is advantageous for coaches, scientists, and dieticians looking to tailor hydration strategies. The MX3 hydration testing system is a new portable analyser that uses pre-calibrated biosensors to measure sweat [Na+ ]. This study aimed to assess the validity and reliability of the MX3 hydration testing system. METHODS: Thirty-one (11 females) recreationally active participants completed one experimental trial...
March 2, 2024: European Journal of Applied Physiology
https://read.qxmd.com/read/38420116/navigating-implementation-barriers-a-holistic-approach-to-improving-exertional-heat-stroke-management
#27
JOURNAL ARTICLE
Yuri Hosokawa, Takao Akama
OBJECTIVES: To assess the shift in medical volunteers' perception and practice surrounding exertional heat stroke (EHS) prehospital management after the Tokyo 2020 Olympic Games. METHODS: An online survey was sent to medical volunteers assigned to work at high EHS risk events during the Tokyo 2020 Olympic Games. Surveys were sent at the time of initial training, immediately after the Games, and one year after the Games. The survey investigated medical volunteers' perceptions and practices regarding the assessment of rectal temperature and the use of whole-body cold water immersion (CWI) as prehospital management of EHS...
2024: BMJ Open Sport & Exercise Medicine
https://read.qxmd.com/read/38414660/physical-exercise-after-solid-organ-transplantation-a-cautionary-tale
#28
REVIEW
Dimitri Stylemans, Marieke Vandecruys, Sofie Leunis, Sofie Engelborghs, Davide Gargioli, Diethard Monbaliu, Véronique Cornelissen, Amaryllis H Van Craenenbroeck, Stefan De Smet
An increasing body of randomized controlled trials suggests the safety of engaging in moderate to vigorous intensity exercise training following solid organ transplantation. Fueled by emerging sport events designed for transplant recipients and the ever-growing body of research highlighting the diverse health benefits of physical activity, transplant recipients are now increasingly participating in strenuous and occasionally competitive physical endeavors that largely surpass those evaluated in controlled research settings...
2024: Transplant International
https://read.qxmd.com/read/38413464/a-randomized-controlled-trial-of-oral-antipyretic-treatment-to-reduce-overheating-during-exercise-in-adults-with-multiple-sclerosis
#29
JOURNAL ARTICLE
Victoria M Leavitt, Ceren Tozlu, Katherine E Nelson, Amelia K Boehme, Jaime E Donnelly, Ines Aguerre, Michael Spinner, Claire S Riley, Joel Stein, Kaho Onomichi
BACKGROUND: Some people with multiple sclerosis (pwMS) avoid exercise due to overheating. Evidence from a variety of cooling treatments shows benefits for pwMS. OBJECTIVE: Conduct a randomized controlled trial of antipyretic treatment before exercise in pwMS. METHODS: Adults over age 18 diagnosed with relapsing-remitting MS reporting heat sensitivity during exercise were randomly assigned to one of six sequences counterbalancing aspirin, acetaminophen, placebo...
February 28, 2024: Journal of Neurology
https://read.qxmd.com/read/38406865/effects-of-caffeine-taurine-co-ingestion-on-endurance-cycling-performance-in-high-temperature-and-humidity-environments
#30
JOURNAL ARTICLE
Peiqi Yu, Yongzhao Fan, Hao Wu
BACKGROUND: Taurine (TAU) and caffeine (CAF), as common ergogenic aids, are known to affect exercise performance; however, the effects of their combined supplementation, particularly in high temperature and humidity environments, have not been studied. HYPOTHESIS: The combination of TAU and CAF will have a greater effect on endurance cycle performance and improve changes in physiological indicators during exercise compared with TAU or CAF supplementation alone and placebo...
February 26, 2024: Sports Health
https://read.qxmd.com/read/38401534/implications-of-heat-stress-induced-metabolic-alterations-for-endurance-training
#31
JOURNAL ARTICLE
Samuel Bennett, Eve Tiollier, Daniel J Owens, Franck Brocherie, Julien B Louis
Inducing a heat-acclimated phenotype via repeated heat stress improves exercise capacity and reduces athletes̓ risk of hyperthermia and heat illness. Given the increased number of international sporting events hosted in countries with warmer climates, heat acclimation strategies are increasingly popular among endurance athletes to optimize performance in hot environments. At the tissue level, completing endurance exercise under heat stress may augment endurance training adaptation, including mitochondrial and cardiovascular remodeling due to increased perturbations to cellular homeostasis as a consequence of metabolic and cardiovascular load, and this may improve endurance training adaptation and subsequent performance...
February 24, 2024: International Journal of Sports Medicine
https://read.qxmd.com/read/38396514/effect-of-a-14-day-period-of-heat-acclimation-on-horses-using-heated-indoor-arenas-in-preparation-for-tokyo-olympic-games
#32
JOURNAL ARTICLE
Carolien Munsters, Esther Siegers, Marianne Sloet van Oldruitenborgh-Oosterbaan
To optimise the performance and welfare of horses during equestrian competitions in hot climates, it is advised to acclimate them to the heat. The effects of training in a heated indoor arena were studied. Four Olympic horses (13.3 ± 2.2 years; three eventers, one para-dressage horse) were trained for 14 consecutive days in a heated indoor arena (32 ± 1 °C; 50-60% humidity) following their normal training schedule in preparation for the Tokyo Olympic games. Standardised exercise tests (SETs) were performed on Day 1 and Day 14, measuring heart rate (HR; bpm), plasma lactate concentration (LA; mmol/L), deep rectal temperature (Trec ; °C), sweat loss (SL; L), and sweat composition (K+ , Cl- and Na+ concentration)...
February 6, 2024: Animals: An Open Access Journal From MDPI
https://read.qxmd.com/read/38394645/effect-of-daylong-exposure-to-indoor-overheating-on-autophagy-and-the-cellular-stress-response-in-older-adults
#33
JOURNAL ARTICLE
James J McCormick, Robert D Meade, Kelli E King, Ashley P Akerman, Sean R Notley, Nathalie V Kirby, Ronald J Sigal, Glen P Kenny
To protect vulnerable populations during heat waves, public health agencies recommend maintaining indoor air temperature below ~24-28°C. While we recently demonstrated that maintaining indoor temperatures ≤26°C mitigates the development of hyperthermia and cardiovascular strain in older adults, the cellular consequences of prolonged indoor heat stress are poorly understood. We therefore evaluated the cellular stress response in 16 adults (6 females) aged 66-78 years during 8 hours rest in ambient conditions simulating homes maintained at 22°C (control) and 26°C (indoor temperature upper limit proposed by health agencies), as well as non-air-conditioned domiciles during hot weather and heat waves (31 and 36°C, respectively; all 45% relative humidity)...
February 23, 2024: Applied Physiology Nutrition and Metabolism
https://read.qxmd.com/read/38391109/metabolomic-profiling-of-the-nutritional-components-of-chicory-leaves-following-heat-processing
#34
JOURNAL ARTICLE
Wataru Kobayashi, Ayumi Tomizawa, Misaki Kurawaka, Masako Abe, Akio Watanabe, Sonoko Ayabe
Chicory (Cichorium intybus L.; witloof) is a crisp bitter leafy vegetable, popularly used in western cuisine in salads and soups (leaves) and as an alternative to coffee (roasted roots). In this study, we explored the effect of heat processing under various temperatures and for different durations on the nutritional composition of chicory leaves using gas chromatography-mass spectrometry (GC/MS) and principal component analysis (PCA). "Vintor" chicory leaves were processed and homogenized to obtain lyophilized samples, and their moisture content and pH were measured...
February 23, 2024: Journal of Food Science
https://read.qxmd.com/read/38385185/modeling-thermoregulatory-responses-during-high-intensity-exercise-in-warm-environments
#35
JOURNAL ARTICLE
Xiaojiang Xu, Timothy P Rioux, Alexander P Welles, Ollie Jay, Brett R Ely, Nisha Charkoudian
The Six Cylinder Thermoregulatory Model (SCTM) has been validated thoroughly for resting humans. This type of modeling is helpful to predict and develop guidance for safe performance of work and recreational activities. In the context of a warming global climate, updating the accuracy of the model for intense exercise in warm environments will help a wide range of individuals in athletic, recreational and military settings. Three sets of previously collected data were used to determine SCTM accuracy. Dataset 1: two groups (large (LG) 91...
February 22, 2024: Journal of Applied Physiology
https://read.qxmd.com/read/38379484/impact-of-topical-capsaicin-cream-on-thermoregulation-and-perception-while-walking-in-the-cold
#36
JOURNAL ARTICLE
Alejandro M Rosales, Jessica L Moler, Andrew C Engellant, Alice L Held, Dustin R Slivka
INTRODUCTION: Capsaicin, a chili pepper extract, can stimulate increased skin blood flow (SkBF) with a perceived warming sensation on application areas. Larger surface area application may exert a more systemic thermoregulatory response. Capsaicin could assist with maintaining heat transport to the distal extremities, minimizing cold weather injury risk. However, the thermoregulatory and perceptual impact of topical capsaicin cream application prior to exercise in the cold is unknown...
January 22, 2024: Wilderness & Environmental Medicine
https://read.qxmd.com/read/38377982/mixed-method-precooling-enhances-self-paced-20-km-cycling-time-trial-performance-when-apparent-temperature-is-46-%C3%A2-c-but-may-not-be-a-priority-in-46-%C3%A2-c
#37
JOURNAL ARTICLE
Julian Andro P Ramos, Kagan J Ducker, Hugh Riddell, Olivier Girard, Grant J Landers, Carly J Brade
PURPOSE: Precooling (PreC) may only benefit performance when thermal strain experienced by an individual is sufficiently high. We explored the effect of mixed-method PreC on 20-km cycling time-trial (CTT) performance under 3 different apparent temperatures (AT). METHODS: On separate days, 12 trained or highly trained male cyclists/triathletes completed six 20-km CTTs in 3 different ATs: hot-dry (35 °C AT), moderately hot-humid (40 °C AT), and hot-humid (46 °C AT)...
February 20, 2024: International Journal of Sports Physiology and Performance
https://read.qxmd.com/read/38373790/continuous-rise-in-oxygen-consumption-during-prolonged-military-loaded-march-in-the-heat-with-and-without-fluid-replacement-a-pilot-study
#38
JOURNAL ARTICLE
Courtney E Wheelock, J Stooks, J Schwob, D Hostler
INTRODUCTION: V̇O2 drift, the rise in oxygen consumption during continuous exercise, has not been adequately reported during prolonged military marches. The purpose of this study was to analyse V̇O2 and energy expenditure (EE) during a loaded march with and without rehydration efforts. Second, the study aimed to compare EE throughout the march with predicted values using a validated model. METHODS: Seven healthy men (23±2 years; V̇O2max : 50...
February 19, 2024: BMJ military health
https://read.qxmd.com/read/38369858/reasons-for-why-medical-students-prefer-specific-sleep-management-strategies
#39
JOURNAL ARTICLE
Cassian J Duthie, Claire Cameron, Kelby Smith-Han, Lutz Beckert, Shenyll Delpachitra, Sheila N Garland, Bryn Sparks, Erik Wibowo
OBJECTIVES: Insomnia symptoms are common among medical students. This study explored the perspectives of medical students about which sleep management strategies to use. METHODS: Medical students responded to an online survey on their thoughts about the use of various sleep management strategies. RESULTS: Of the 828 respondents, 568 (69%) provided responses to questions about the most preferred strategies and 450 (54%) provided responses about their least preferred strategies...
February 18, 2024: Behavioral Sleep Medicine
https://read.qxmd.com/read/38367251/hormonal-intrauterine-devices-and-heat-exchange-during-exercise
#40
JOURNAL ARTICLE
Nathalie V Kirby, Robert D Meade, Brodie J Richards, Sean R Notley, Glen P Kenny
Synthetic progestins in oral contraceptives are thought to blunt heat dissipation by reducing skin blood flow and sweating. However, whether progestin-releasing intrauterine devices (IUDs) modulate heat loss during exercise-heat stress is unknown. We used direct calorimetry to measure whole-body total (dry + evaporative) heat loss in young, physically active women (mean (SD); aged 24 (4) years, <mml:math xmlns:mml="https://www.w3.org/1998/Math/MathML"> <mml:semantics> <mml:msub><mml:mover><mml:mi>V</mml:mi> <mml:mo>̇</mml:mo></mml:mover> <mml:mrow><mml:msub><mml:mi>O</mml:mi> <mml:mn>2</mml:mn></mml:msub> <mml:mi>peak</mml:mi></mml:mrow> </mml:msub> <mml:annotation>${\dot V_{{{\mathrm{O}}_{\mathrm{2}}}{\mathrm{peak}}}}$</mml:annotation></mml:semantics> </mml:math> 39...
February 17, 2024: Journal of Physiology
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