Key result
Static stretching of the triceps surae muscle for 10 minutes transiently increased heart rate and attenuated the high-frequency component of heart rate variability, indicating decreased parasympathetic activity.
Why the study?
Does 10 minutes of static stretching of the triceps surae muscle alter heart rate variability and autonomic function in healthy adult males?
Does 10 minutes of static stretching of the triceps surae muscle alter heart rate variability and autonomic function in healthy adult males?
Static stretching of the calf muscle transiently increases heart rate via parasympathetic withdrawal rather than sympathetic activation, which coincides with a subjective feeling of comfort.
Answers are grounded in this paper and cite their sources.
May transiently shift autonomic balance during stretching; leaves open relevance for exercise safety or patient subgroups.
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Sakai et al. (2014) studied Healthy (n=10). Static stretching of the triceps surae muscle vs. Pre-stretching resting state was evaluated on Peak heart rate during stretching (beats/min) (p=<0.05). Static stretching of the triceps surae muscle for 10 minutes transiently increased heart rate and attenuated the high-frequency component of heart rate variability, indicating decreased parasympathetic activity.
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