vendex and Hyperthermia

To investigate the effect of progressive whole-body hyperthermia on maximal, and rapid voluntary torque production, and their neuromuscular determinants.. Repeated measures, randomised.. Nine participants performed sets of neuromuscular assessments in HOT conditions (∼50°C, ∼35% relative humidity) at rectal temperatures (T. All neuromuscular variables were unaffected by time in CON. In HOT, MVT, normalised EMG at MVT and VA were lower at 39.5°C compared to 37°C (p<0.05). Early- (0-50ms) and middle- (50-100ms) phase voluntary RTD were unaffected by increased T. Hyperthermia reduced late-phase voluntary RTD, likely due to reduced neural drive and the reduction in MVT. In contrast, early- and middle-phase voluntary RTD were unaffected by hyperthermia, likely due to the conflicting effects of reduced neural drive but faster intrinsic contractile properties.

Topics: Adult; Body Temperature Regulation; Electromyography; Hot Temperature; Humans; Humidity; Hyperthermia; Male; Muscle Contraction; Muscle Strength; Muscle, Skeletal; Torque; Young Adult