Why the study?
Does cold water immersion alter cardiovascular responses compared to thermoneutral immersion and air at rest and during exercise in healthy men?
Population
10 healthy males without a history of cardiovascular disease, mean age 22.6 years.
Comparison
Head-out water immersion at 34.5 °C and 30 °C… vs Rest and exercise in air at 26 °C.
Design
Other
Authors
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Water immersion substantially raises cardiac output in healthy men; leaves open applicability to patients or exercise settings.
Does cold water immersion alter cardiovascular responses compared to thermoneutral immersion and air at rest and during exercise in healthy men?
Cold water immersion increases cardiac preload and stroke volume more than thermoneutral immersion due to peripheral vasoconstriction, maintaining high cardiac output to preserve arterial pressure despite reduced vascular resistance.
Choi et al. (1999) studied this question.
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