Key result
Moderate intensity interval training maintained at a heart rate <120 beats/min stimulated vagus nerve activity after exercise cessation compared to baseline.
Why the study?
Does moderate intensity interval training alter autonomic nervous activity in young male volunteers?
Does moderate intensity interval training alter autonomic nervous activity in young male volunteers?
Moderate intensity interval training that maintains heart rate below 120 bpm stimulates total autonomic nervous activity and activates vagus nerve activity post-exercise.
May support post-exercise vagal activation with HR-limited interval training in healthy young men; hypothesis-generating, leaves open clinical translation.
The purpose of this study was to examine the effects of moderate intensity interval training from the change of the autonomic nervous activity. Ten male volunteers aged 21-22 years were studied. After 10-minute rest in a seated position, the subjects were asked to perform the strength of moderate cycling exercise in ergometer. Cycling rate was done in 50 times/min. Load resistance of the ergometer was set to 2.0 kgm. Subjects paused the exercise when the heart rate becomes 120 beats/min. Subjects have resumed the exercise when the heart rate returns to the value at rest. This trial was repeated twice. The experiment was ended when the heart rate of the subjects has returned to resting level. When the heart rate during exercise is maintained to less than 120 beats/min, sympathetic nerve activity during exercise did not work actively compared to the baseline. Vagus nerve activity after exercise cessation exceeds the baseline. It is clarified that the exercise as well as activating the vagus nerve activity stimulates the total autonomic nervous activity. It has revealed that at the time of interval training at moderate load the vagus nerve activity can be carried out.
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Kai et al. (2016) studied this question. Moderate intensity interval training vs. Baseline was evaluated on Autonomic nervous activity (sympathetic and vagus nerve activity). Moderate intensity interval training maintained at a heart rate <120 beats/min stimulated vagus nerve activity after exercise cessation compared to baseline.
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