Key result
Thermal balance perturbation showed cold-induced vasodilation occurred only during cold application when body heat decreased, with onset cutoffs of 0.62°C (rectal) and 16.76°C (finger).
Why the study?
Does thermal balance perturbation affect cold-induced vasodilation in healthy adults?
Does thermal balance perturbation affect cold-induced vasodilation in healthy adults?
Cold-induced vasodilation is a centrally originating phenomenon caused by sympathetic vasoconstrictor withdrawal, dependent on excess heat to preserve thermal balance.
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Supports heat-dependent CIVD in healthy adults; hypothesis-generating for thermoregulatory strategies, should not yet change practice.
Flouris et al. (2009) studied Healthy adults (n=15). Thermal balance perturbation (heat and cold water immersions) vs. Alternating conditions (A-B-A-B) was evaluated on Cold-induced vasodilation. Thermal balance perturbation showed cold-induced vasodilation occurred only during cold application when body heat decreased, with onset cutoffs of 0.62°C (rectal) and 16.76°C (finger).
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