Why the study?
Does altering respiration rate and depth affect heart rate and heart rate variability?
Does altering respiration rate and depth affect heart rate and heart rate variability?
Respiration rate and depth significantly affect heart rate and heart rate variability, which has important implications for studies using heart rate as a dependent variable.
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Breathing patterns may confound HR/HRV measures; leaves open need for standardized respiration protocols in cardiac research.
L. Alan Sroufe (1971) studied this question.
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