Influence of exercise training with thigh compression on heat-loss responses

We investigated the effect of thigh compression, which accelerates activation of central command and muscle metabo‐ and mechanoreceptors, on the adaptation of sweating and cutaneous vascular responses during exercise heat acclimation. Nine non‐heat‐acclimated male subjects were acclimated to heat (3...

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Bibliographic Details
Published in:Scandinavian journal of medicine & science in sports 2015-06, Vol.25 (S1), p.173-182
Main Authors: Amano, T., Inoue, Y., Koga, S., Nishiyasu, T., Kondo, N.
Format: Article
Language:English
Subjects:
Acclimatization - physiology
Adult
Bicycling - physiology
Body Temperature Regulation - physiology
Compression Bandages
Exercise
Exercise - physiology
Heat
Heat adaptation
Hot Temperature
Humans
ischemic training
Kaatsu training
Male
Oxygen Consumption
Physiology
Skin - blood supply
Sports medicine
Sports training
Sweating - physiology
thermoregulation
Thigh
Vasodilation - physiology
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Summary:We investigated the effect of thigh compression, which accelerates activation of central command and muscle metabo‐ and mechanoreceptors, on the adaptation of sweating and cutaneous vascular responses during exercise heat acclimation. Nine non‐heat‐acclimated male subjects were acclimated to heat (32 °C and 50% RH) while cycling [50% of maximum oxygen uptake ( V ˙ O 2 m a x )] 60 min/day for 7 days (control group). The experimental group (n = 9) conducted the same training while the proximal thighs were compressed by a cuff at 60 mmHg. V ˙ O 2 m a x , acetylcholine‐induced forearm sweating rate (iontophoresis), and mean sweating and cutaneous vascular responses on the forehead, chest, and forearm (SRmean and CVCmean) during passive heating were evaluated before and after training. Training significantly increased V ˙ O 2 m a x while did not affect acetylcholine‐induced sweating rates in either group. Training significantly decreased Tb thresholds for SRmean and CVCmean during passive heating without the alternations of sensitivities in both groups. Although SRmean during passive heating at a given ΔTb was not improved in either group, CVCmean was significantly (P 
ISSN:0905-7188
1600-0838
DOI:10.1111/sms.12365