Key result
Prolonged Antarctic exposure over 8 months resulted in beneficial peripheral adaptations, including a greater amplitude of cold-induced vasodilation (median amplitude increased from 3.7°C to 12.1°C).
Why the study?
Polar region exposure increases tissue injury risk, which could be reduced by peripheral blood flow adaptations, but data regarding the trainability of cold-induced vasodilation are equivocal.
Does prolonged Antarctic exposure improve cold-induced vasodilation adaptations in healthy males?
Observational (n=5)
No
Does prolonged Antarctic exposure improve cold-induced vasodilation adaptations in healthy males?
Effect estimate: r = 0.55
Absolute Event Rate: 12.1% vs 3.7%
Prolonged exposure to extreme cold in Antarctica leads to progressive beneficial peripheral and perceptual adaptations in cold-induced vasodilation.
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Prolonged Antarctic exposure was associated with CIVD improvements; leaves open generalizability and clinical relevance for frostbite prevention.
Tyler et al. (2020) conducted an observational in Healthy individuals (n=5). Prolonged Antarctic exposure vs. Baseline (Day 12) was evaluated on 1st wave cold-induced vasodilation (CIVD) amplitude (r = 0.55). Prolonged Antarctic exposure over 8 months resulted in beneficial peripheral adaptations, including a greater amplitude of cold-induced vasodilation (median amplitude increased from 3.7°C to 12.1°C).