Key result
Postexercise muscle ischemia significantly increased heart rate variability from baseline (54.4 to 80.1 ms), indicating enhanced parasympathetic cardiac tone.
Why the study?
Does activation of muscle metaboreflex induced by postexercise muscle ischemia alter heart rate variability in healthy male subjects?
Population
8 healthy male subjects
Comparison
Activation of muscle metaboreflex induced by… vs Baseline resting state
Design
Other
Follow-up
2 minutes
Authors
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May inform physiological models of metaboreflex-autonomic interaction; leaves open relevance to patients or outcomes.
Does activation of muscle metaboreflex induced by postexercise muscle ischemia alter heart rate variability in healthy male subjects?
Absolute Event Rate: 80.1% vs 54.4%
Activation of the muscle metaboreflex by postexercise ischemia enhances parasympathetic cardiac tone, balancing sympathetic activity to maintain an unchanged heart rate.
Nishiyasu et al. (1994) studied Healthy (n=8). Postexercise muscle ischemia (forearm occlusion after handgrip) vs. Baseline was evaluated on Heart rate variability (standard deviation of R-R intervals). Postexercise muscle ischemia significantly increased heart rate variability from baseline (54.4 to 80.1 ms), indicating enhanced parasympathetic cardiac tone.
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