Results 251 to 260 of about 206,190 (380)

Effect of hypoxia on muscle activation at equivalent absolute and relative intensity during incremental and constant load exercise to task failure

open access: yesExperimental Physiology, EarlyView.
Abstract We examined the impact of moderate hypoxia (HYPO) on muscle activation during incremental exercise matched for both absolute and equivalent relative intensity. Fifteen active subjects (10 males, 5 females) completed two ramp incremental test and two step tests in normoxia (NORM; FiO2${F_{{\mathrm{i}}{{\mathrm{O}}_2}}}$ = 0.209) and HYPO (FiO2${
Dania Ibrahim   +2 more
wiley   +1 more source

The role of acid‐base balance in cerebrovascular and ventilatory responses to CO2 during 10 h normobaric hypoxia

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend During 10 h exposures to normobaric hypoxia exposure there was a selective leftward shift in ventilatory response to hyperoxic hypercapnic rebreathing, but not the cerebrovascular response. The key findings are that the resetting of the central chemoreflex to lower PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_2}}}$ during early hypoxic ...
Holly Barclay   +3 more
wiley   +1 more source

Arterial–venous differences of brain‐derived neurotrophic factor isoforms across the brain and muscle after exercise at different intensities

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Exercise‐induced increases in forearm venous plasma and serum brain‐derived neurotrophic factor (BDNF) are often assumed to be indicative of release from the brain. Sixteen healthy and physically fit adults (20–40 years old) were recruited to investigate whether exercise‐induced changes in forearm venous mature BDNF (mBDNF) and ...
Olga Tarassova   +10 more
wiley   +1 more source

On the role of descending drive and group III/IV muscle afferent feedback in modulating corticomotoneuronal excitability during knee‐extensor exercise

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Transcranial magnetic stimulation (TMS), cervicomedullary stimulation (CMS), and femoral nerve stimulation (FNS) were used to assess changes in corticomotoneuronal excitability induced by fatiguing submaximal knee‐extension contractions performed in three conditions: (1) voluntarily (VOL); (2) electrically evoked (EVO); and (3 ...
Fabio G. Laginestra   +9 more
wiley   +1 more source

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