Key result
The change in the core temperature threshold for vasodilation per unit change in plasma osmolality was similar when exercise intensity increased (0.064) and when osmolality decreased (0.086; P>0.1).
Population
8 young male subjects
Comparison
20-min cycle-ergometer exercise at 65% VO2 under… vs 20-min cycle-ergometer exercise at 30% VO2 under…
Follow-up
20 minutes
Authors
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Supports osmolality mediating exercise effects on vasodilation threshold; hypothesis-generating for thermoregulatory control.
Absolute Event Rate: 0.086% vs 0.064%
p-value: p=>0.1
The increase in the body core temperature threshold for forearm skin vasodilation due to increased exercise intensity is partially explained by concomitantly increased plasma osmolality.
Mitono et al. (2005) studied Healthy (n=8). Hypoosmotic condition (hypotonic saline infusion with DDAVP) vs. Isoosmotic condition was evaluated on Change in body core temperature threshold for forearm skin vasodilation per unit change in plasma osmolality (p=>0.1). The change in the core temperature threshold for vasodilation per unit change in plasma osmolality was similar when exercise intensity increased (0.064) and when osmolality decreased (0.086; P>0.1).
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