Table 2.

Heart rate variability parameters at baseline and during recovery from exercise

		Baseline	1 h	3 h	6 h	24 h
Mean interval (ms)	90 min	1221 ± 69	1028 ± 96*	1047 ± 95*	1140 ± 91*	1223 ± 101
	120 min	1231 ± 79	1133 ± 77*†	1110 ± 82*	1184 ± 97	1184 ± 70
RMSSD (ms)	90 min	72.7 ± 13.2	43.8 ± 9.8*	43.7 ± 9.6*	51.9 ± 11.7*	72.7 ± 11.9
	120 min	75.5 ± 12.8	60.4 ± 12.3*†	60.0 ± 10.6*†	57.8 ± 11.2*	71.8 ± 14.1
LF:HF	90 min	0.9 ± 0.3	3.4 ± 0.7*	3.0 ± 0.8*	2.0 ± 0.3*	0.9 ± 0.2
	120 min	0.7 ± 0.2	1.5 ± 0.4*†	1.5 ± 0.3*†	1.6 ± 0.4*	0.9 ± 0.1

Data are the mean ± SEM. RMSSD, root mean square of successive differences. *Significantly different from baseline (P < 0.05). ^†Significantly different from 90 min (P < 0.05).