Heart Rate, Systolic Blood Pressure and Autonomic Nerve Activity Before and After High Intensity Resistance Exercise

[Purpose] We investigated the changes in systolic blood pressure and autonomic nerve activity during high intensity resistance exercise in healthy subjects as a prelude to its implementation for heart disease patients. [Subjects] The subjects were 11 healthy males who did not customarily exercise. [Method] Using extended leg raises in the supine position, subjects attempted to perform 1RM 10 times at 80% load. We measured and compared systolic blood pressure and autonomic nerve activity before and after the exercise. [Results] Systolic blood pressure showed an increasing trend in line with the number of elevations, and LF/HF was significantly increased by exercise over the at rest value, and this somewhat elevated condition continued for 5 minutes after the end of exercise. [Conclusion] From the results of the sympathic nervous system after high intensity resistance exercise in healthy persons, we consider that care is needed in administering high intensity resistance exercise to heart disease patients, because in addition to heart disease patients having continuously elevated sympathic nervous activity from the resting state, there is an additional possibility of a continuously elevated state of elevated sympathic nervous activity after the end of exercise. Furthermore, the rises in blood pressure and sympathic nervous activity were seen to be coincident.