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Official Journal of the Japan Wood Research Society

Fig. 6 | Journal of Wood Science

Fig. 6

From: Positive physiological effects of touching sugi (Cryptomeria japonica) with the sole of the feet

Fig. 6

Pre- and post-measurement values of contact with uzukuri wood via the soles of the feet of parasympathetic and sympathetic nervous activities. a The natural logarithm of the high frequency (HF) power component of the heart rate variability. n = 27, mean ± SE, † p < 0.05 (pre-measurement vs. post-measurement value) as determined using a paired t-test. b The natural logarithm of the low frequency/high frequency (LF/HF) of heart rate variability. n = 27, mean ± SE, † p < 0.05 (pre-measurement vs. post-measurement value) as determined using a paired t-test

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