Key result
A shorter, milder cold tolerance test sufficiently substitutes the standard protocol with >0.90 temperature correlation.
Why the study?
Can the standard local cold tolerance test (30 min at 0°C) be substituted with milder temperature and shorter duration tests without losing reliability in measuring cold-induced vasodilatation?
Observational (n=10)
No
Can the standard local cold tolerance test (30 min at 0°C) be substituted with milder temperature and shorter duration tests without losing reliability in measuring cold-induced vasodilatation?
Effect estimate: r > 0.90
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A milder and shorter local cold tolerance test (5°C for 10-15 min) can reliably substitute the standard 0°C 30-min test, reducing systemic cardiovascular loads and discomfort.
Sawada et al. (1984) conducted an observational in Healthy subjects (n=10). Local finger cooling at 5°C or 10°C vs. Local finger cooling at 0°C for 30 minutes was evaluated on Stability of the order of mean skin temperature (MSTi) with shortened immersion time (r > 0.90). The current local cold tolerance test of 30 minutes at 0°C can be sufficiently substituted by a 5°C test for 10 to 15 minutes, as the order of mean skin temperature remained extremely stable (r > 0.90).
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