Why the study?
Does the time of day affect the maximum heart rate response to a maximal exercise stress in male subjects?
Population
10 male subjects
Comparison
Maximal exercise stress task performed at 7… vs Comparison across different times of day
Follow-up
24 hours
Authors
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Supports scheduling maximal exercise testing without time-of-day adjustment in men; leaves open effects on other exertional parameters.
Does the time of day affect the maximum heart rate response to a maximal exercise stress in male subjects?
While resting heart rate shows circadian rhythmicity, maximum heart rate response to exercise does not appear to vary significantly by time of day.
C. J. Cohen (1980) studied this question.
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