Results 111 to 120 of about 4,712 (268)

Sex differences in cerebral blood flow and cardiac function in response to exercise in the heat

Experimental Physiology, EarlyView.
Abstract We investigated the effect of exercising in hot conditions on cerebral blood flow and systolic left ventricular (LV) function in males and females, to explore sex differences. The experimental condition consisted of walking on a treadmill at 5 km/h and 2% incline, inside a heat chamber at 40°C (50% relative humidity), for 90 min.
João Carlos Locatelli, Juliene G. Costa, Kristanti W. Wigati, Jesse L. Criddle, Julie J. Collis, Xingwei Xu, Louise H. Naylor, Howard H. Carter, Shane K. Maloney, Robert A. McLaughlin, Andrew Haynes, Helen Jones, Keith George, Daniel J. Green   +13 more
wiley   +1 more source

Quantifying microvascular responses to local heating using optical coherence tomography: Comparison between skin sites and sex differences

Experimental Physiology, EarlyView.
Summary of the study design, metholodgy, results and conclusions. Abstract Due to a lack of technical capacity to directly visualise and quantify microvessels in the skin, little is known regarding regional and/or sex differences. We compared diameter, velocity, flow and density at four regional sites using a novel optical coherence tomography (OCT ...
Juliene G. Costa, Kristanti W. Wigati, Louise H. Naylor, Helen Jones, Robert A. McLaughlin, Daniel J. Green   +5 more
wiley   +1 more source

Exercise during 14 days of head down tilt bedrest attenuates motor unit impairments in older humans

Experimental Physiology, EarlyView.
Abstract Head‐down tilt bedrest (HDBR) models the effects of mechanical unloading on neuromuscular function. The efficacy of exercise in preserving motor unit (MU) function in older adults during HDBR remains unclear. This study investigated the effects of 14‐day HDBR on MU properties in older adults and the protective role of exercise.
Philippe St‐Martin, Jean‐Christophe Lagacé, Mathil Ruel, Ahmed Ghachem, Guillaume Léonard, Eleonor Riesco, Mathew Piasecki, Jamie S. McPhee, Isabelle J. Dionne   +8 more
wiley   +1 more source

Impact of 14 days of head‐down bed rest and an exercise countermeasure on skeletal muscle atrophy, proteome and circulatory cytokines in older adults

Experimental Physiology, EarlyView.
Abstract Prolonged bed rest and immobilization have deleterious effects on skeletal muscle mass and function, especially in older adults. These can lead to reduced physical capacity and quality of life. Previous experiments in younger individuals show that exercise can mitigate these effects, but evidence remains scarce and inconclusive in older adults.
Jean‐Christophe Lagacé, Philippe St‐Martin, Mariano Avino, Ahmed Ghachem, Guy Hajj‐Boutros, Jose A. Morais, Jamie S. McPhee, Karen Lambert, Eléonor Riesco, Isabelle J. Dionne   +9 more
wiley   +1 more source

Effects of 14 days of head‐down bed rest with or without exercise, and subsequent recovery on bone turnover, density and structure in older adults

Experimental Physiology, EarlyView.
Abstract Bed rest accelerates bone loss and may exacerbate skeletal fragility. This study examined the effects of 14 days of head‐down tilt bed rest (HDBR) with or without exercise, and subsequent recovery, on bone turnover, density and structure in older adults. Twenty‐two healthy older adults (55–65 years) completed the HDBR protocol.
Guy Hajj‐Boutros, Andréa Faust, Carmelo Mastrandrea, Vita Sonjak, Dounia Rouabhia, Gustavo Duque, Richard Kremer, Stéphanie Chevalier, Julie Lacombe, Mathieu Ferron, Tyler A. Churchward‐Venne, José A. Morais   +11 more
wiley   +1 more source

The bombardment history on the lunar farside revealed by ⁴⁰Ar/³⁹Ar geochronology of Chang'e-6 impact melt rocks. [PDF]

Sci Adv
Zhang WF, Zhang L, Lin M, Jourdan F, Wang JJ, Zhang YQ, Chen JY, Zheng DW, He PL, Su F, He HY, Qiu HN, Bai XJ, Xia XP, Xiao M, Jiang YD, Li JJ, Zhang J, Yang LK, Huang FF, Wei B, Wang JZ, Zhou Q, Cao YH, Cui ZX, Yang Q, Chen LL, Xu YG.   +27 more
europepmc   +1 more source

Sex differences in macrovascular responsiveness: Acute effects of hot water immersion versus aerobic exercise in overweight older adults

Experimental Physiology, EarlyView.
Abstract Recent studies have focused on the potential benefits of heat exposure for cardiovascular health. However, the acute effects of heat therapy on conduit arteries remain unclear, particularly in overweight and obese older males and females. This study aimed to compare core temperature (Tc), heart rate (HR), and brachial, femoral, and carotid ...
Juliene G. Costa, Joao Carlos Locatelli, Kristanti W. Wigati, Louise H. Naylor, Andrew Haynes, Helen Jones, Daniel J. Green   +6 more
wiley   +1 more source

New lunar crater reveals extensive distal regolith modification. [PDF]

Sci Adv
Powell TM, Greenhagen BT, Horvath T, Williams JP, Jhoti E, Speyerer EJ, Elder CM, Paige DA.   +7 more
europepmc   +1 more source

Comparison of exercise training and repeated hot water immersion on vascular function in overweight older adults

Experimental Physiology, EarlyView.
Abstract Recent studies suggest that heat exposure may benefit cardiovascular health, but in overweight and obese older adults, the chronic effects of heat therapy on artery function are still uncertain. We aimed to compare the effects of 12 weeks (3×/week, 40 min) of aerobic exercise (EXE) to hot water immersion (HWI) and an inactive control group ...
Juliene G. Costa, Joao Carlos Locatelli, Kristanti W. Wigati, Louise H. Naylor, Helen Jones, Andrew Haynes, Daniel J. Green   +6 more
wiley   +1 more source

Omitted technical measures: establishing evidence for the necessity of problem formulation and validation in system alternative selection. [PDF]

Res Eng Des
Eaton CE, Campo KX, Longhurst A, Mesmer B.   +3 more
europepmc   +1 more source