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Mild hypohydration in healthy older adults increases pain-related brain activity without affecting pain perception: A single-blind study.
J Appl Physiol (1985)
December 2024
Faculty of physical activity sciences, Université de Sherbrooke, P.Q., Canada.
Understanding how hydration status influences pain perception is particularly important in older adults, as both dehydration and pain are prevalent in this population. Ten individuals (70 ± 4 years) completed two randomized and counterbalanced trials. They were exposed to passive heat until they lost 1% body mass through sweat and urine (~ 100 min), with the loss either unreplaced (sham infusion, HYPO) or fully replaced via 0.
View Article and Find Full Text PDFIs mild dehydration a risk for progression of childhood chronic kidney disease?
Pediatr Nephrol
November 2024
Section of Nephrology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA.
Article Synopsis
- Children with chronic kidney disease (CKD) are particularly at risk for dehydration due to their limited ability to access water and kidney function issues that reduce their ability to concentrate urine.
- This article reviews the implications of dehydration in CKD, emphasizing the need for careful assessment and the challenges it poses for defining adequate hydration in this population.
- While existing studies in adults haven’t shown significant benefits of improved hydration on CKD outcomes, the authors advocate for routine dehydration risk assessments and tailored management strategies for children with CKD to mitigate potential complications.
Impact of Preparticipation Hypohydration on Cognitive Performance and Concussion-like Symptoms in Recreational Athletes.
Nutrients
October 2023
Department of Medicine I, University Hospital Munich, Ludwig Maximilian University, 81377 Munich, Germany.
Background: Sports-related concussion is a relevant risk of contact sports, with several million cases per year worldwide. Prompt identification is crucial to prevent complications and late effects but may be impeded by an overlap with dehydration-associated impairment of cognitive function. Researchers have extensively studied the effects of pronounced dehydration in endurance sports, especially in the heat.
View Article and Find Full Text PDFEffect of fluid replacement with green tea on body fluid balance and renal responses under mild thermal hypohydration: a randomized crossover study.
Eur J Nutr
December 2023
Central Research Institute, ITO EN, Ltd., Makinohara, Shizuoka, Japan.
Purpose: Maintaining an appropriate hydration level by ingesting fluid in a hot environment is a measure to prevent heat-related illness. Caffeine-containing beverages, including green tea (GT), have been avoided as inappropriate rehydration beverages to prevent heat-related illness because caffeine has been assumed to exert diuretic/natriuretic action. However, the influence of caffeine intake on urine output in dehydrated individuals is not well documented.
View Article and Find Full Text PDFImpact of Preparticipating Hypohydration on Cardiopulmonary Exercise Capacity in Ambitious Recreational Athletes.
Nutrients
July 2023
Department of Medicine I, University Hospital Munich, Ludwig Maximilian University, Marchioninistr. 15, 81377 Munich, Germany.
Background: Heat induces a thermoregulatory strain that impairs cardiopulmonary exercise capacity. The aim of the current study is to elucidate the effect of isolated dehydration on cardiopulmonary exercise capacity in a model of preparticipating hypohydration.
Methods: Healthy recreational athletes underwent a standardised fluid deprivation test.
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