Key result
Sequential cold-water hand immersions do not impair cold-induced vasodilation onset time or finger temperature recovery.
Why the study?
Repetitive hand cooling and rewarming occurs frequently in cold environments, but the influence of intraday repeated hand cooling on cold-induced vasodilation, sympathetic activation, and temperature recovery was unknown.
Does intraday repeated hand cooling impair cold-induced vasodilation (CIVD) and finger/hand temperature recovery?
Does intraday repeated hand cooling impair cold-induced vasodilation (CIVD) and finger/hand temperature recovery?
Absolute Event Rate: 13.2% vs 12.1%
p-value: p=0.546
Two sequential intraday cold-water hand immersions do not impair the cold-induced vasodilation response or finger temperature recovery, suggesting repetitive cold exposure does not acutely worsen physiological cold defense in the fingers.
No takes yet. Share an insight, caveat, or question.
Sequential hand cooling does not acutely impair CIVD or recovery; hypothesis-generating for repeated occupational or athletic exposure.
Weller et al. (2023) studied Healthy (Cold exposure) (n=10). Sequential cold-water hand immersion vs. First cold-water hand immersion was evaluated on CIVD onset time (index finger) in minutes (p=0.546). Two sequential 30-minute cold-water hand immersions did not significantly impair cold-induced vasodilation onset time or finger temperature recovery.
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