The direct effect of bathing on R-R interval / 日本温泉気候物理医学会雑誌

ABSTRACT

The direct effect of bathing on R-R interval was examined in six healthy men (mean age, 40±11 years).<br>Bathing at 37-38°C produced signifficant shortening of mean R-R intervals (mRR) during usual and deep breathing (6times/min), and signifficant decrease of their coefficients of variation (CV; SD/mRR×100) during deep breathing.<br>In ten minutes after the end of bathing, mRR recovered, but not CV.<br>These data suggest that the bathing at those temperature might stimulate the sympathetic drive and suppress the parasympathetic drive to the heart.