Results 51 to 60 of about 1,958 (187)

Physiological consequences of hypohydration

Medicine & Science in Sports & Exercise, 1992
During exercise in the heat, sweat output often exceeds water intake, which results in a body water deficit or hypohydration. This water deficit occurs from both the intracellular and extracellular fluid compartments, and causes a hypertonic-hypovolemia of the blood.
openaire   +3 more sources

Initial Stay Time and Work‐Rest Scheduling During Consecutive Heavy‐Intensity Workdays in Hot Environments in Young and Older Males

American Journal of Industrial Medicine, Volume 69, Issue 12, Page 1093-1105, December 2026.
ABSTRACT Introduction This study examined initial stay times (IST), defined as the duration of uninterrupted work before core temperature approaches recommended safety limits (38.0°C, ~1.0°C above baseline), and the efficacy of work‐rest cycles during repeated heavy work across consecutive workdays in young and older males.
Glen P. Kenny, Gil Bourgois, Sarah M. Taggart, Kelli E. McCormick, James J. McCormick, Leonidas G. Ioannou, Fergus K. O'Connor   +6 more
wiley   +1 more source

Validity of hydration non-invasive indices during the weightcutting and official weigh-in for Olympic combat sports. [PDF]

PLoS ONE, 2014
In Olympic combat sports, weight cutting is a common practice aimed to take advantage of competing in weight divisions below the athlete's normal weight.
Valentín E Fernández-Elías, Alberto Martínez-Abellán, José María López-Gullón, Ricardo Morán-Navarro, Jesús G Pallarés, Ernesto De la Cruz-Sánchez, Ricardo Mora-Rodriguez   +6 more
doaj   +1 more source

Durability of Physiological Determinants of Distance‐Running Performance in Warm and Temperate Environments

Scandinavian Journal of Medicine &Science in Sports, Volume 36, Issue 11, November 2026.
ABSTRACT Runners increasingly train and compete in warm conditions, yet it is unclear whether heat stress accelerates the deterioration of the physiological determinants of distance‐running performance during prolonged running. Ten trained runners (7 M; 3 F; 38 ± 11 years; peak oxygen uptake (V̇O2peak): 56.0 ± 5.7 mL·kg−1·min−1) visited the laboratory ...
Ben Hunter, Naoto Fujii, Ed Maunder, Daniel Muniz‐Pumares   +3 more
wiley   +1 more source

Effects of dietary nitrate supplementation on peak oxygen uptake following 10 days of Ramadan fasting in healthy adults

Experimental Physiology, Volume 111, Issue 10, Page 4636-4645, 1 October 2026.
Abstract Ramadan is a sacred religious practice observed by Muslims that involves abstaining from food and water from sunrise to sunset for 1 month. Prior work has reported that peak oxygen uptake (V̇O2peak${{\dot{V}}_{{{{\mathrm{O}}}_2}{\mathrm{peak}}}}$) can decline during Ramadan in parallel with reduced physical activity.
Mikail M. Bhimani, Julian C. Bommarito, Natalie I. Miners, Pardeep K. Khangura, Rileigh K. Stapleton, Ashly Sharma, Johan S. Thiessen, Nicolas O. Cyr, Devin G. McCarthy, Jianzhang Dong, Clara E. Cho, Philip J. Millar   +11 more
wiley   +1 more source

Body Posture‐Related Differences in Pain Perception and Their Mediation by Cardiovascular Factors

Psychophysiology, Volume 63, Issue 9, September 2026.
ABSTRACT Pain modulation arising from the cardiovascular system has repeatedly been described. It is mediated by the baroreceptor system, where the activity of baroreceptor afferents inhibits nociception. Body posture changes cause blood volume redistribution that might modulate baroreceptor activity and antinociceptive effects. This study investigated
Gustavo A. Reyes del Paso, Dolores Santiago, Belén Moreno, Casandra I. Montoro, Stefan Duschek, Dmitry M. Davydov   +5 more
wiley   +1 more source

Serum sodium, tonicity, and risk of dementia in cohort and healthcare populations

Alzheimer's &Dementia, Volume 22, Issue 8, August 2026.
Abstract INTRODUCTION Identifying modifiable, accessible dementia risk factors is critical for prevention. Worldwide surveys indicate that about half of adults do not meet recommended fluid intake and may be chronically underhydrated. METHODS We examined associations between intracellular hydration markers and dementia risk in 13,535 participants from ...
Natalia I. Dmitrieva, Jonathan Rabinowitz, Eric S. Leifer, Delong Liu, Mona N. Bahouth, Manfred Boehm, Rebecca F. Gottesman   +6 more
wiley   +1 more source

Plasma hormonal responses at graded hypohydration levels during exercise-heat stress

, 1985
The effects of graded levels of hypohydration (3, 5, and 7% of body weight) on hormonal responses to exercise in the heat were examined in six heat-acclimated male volunteers. On the day following dehydration, subjects performed light (approximately 25%
M. N. Sawka, K. B. Pandolf, A. J. Young, R. W. Hubbard, R. P. Francesconi, S. Muza   +5 more
core   +1 more source

Heat Exposure and Hypohydration Exacerbate Physiological Strain During Load Carrying [PDF]

, 2019
Heat exposure and hypohydration induce physiological and psychological strain during exercise; however, it is unknown if the separate effects of heat exposure and hypohydration are synergistic when co-occurring during loaded exercise. This study compared
Huggins, Robert A., Rebecca L. Stearns, Megan M. Bosworth, Casa, Douglas J., Elizabeth L. Adams, Douglas J. Casa, DeMartini, Julie K., Carl M. Maresh, Kennedy, Rachel M., Maresh, Carl M., Julie K. DeMartini-Nolan, DiStefano, Lindsay J., Lindsay J. DiStefano, Rachel M. Kennedy, Stearns, Rebecca L., Adams, Elizabeth L., Robert A. Huggins, Lawrence E. Armstrong, Armstrong, Lawrence E.   +18 more
core   +1 more source

Does hypohydration really impair endurance performance? Methodological considerations for interpreting hydration research [PDF]

, 2019
The impact of alterations in hydration status on human physiology and performance responses during exercise is one of the oldest research topics in sport and exercise nutrition.
Stephen Mears (1258791), Mark Funnell (1386612), Ruth M James (8060141), Lewis James (1249500)   +3 more
core   +4 more sources