. 2018 Jul;47(Suppl 1):74–81.

Table 3:

Changes in HRV and salivary cortisol by training in CON and EXP before and after training

*Variables*	*Groups*	*Before training*	*After training*	*ANOVA (F-value)*
Mean RR (ms)	CON	855.8±99.0	828.5±91.0	Time	0.005
	CON	855.8±99.0	828.5±91.0	Group	0.224
	EXP	841.5±58.7	871.7±76.8	Time×Group	1.894
SDDN (ms)	CON	37.3±16.2	35.6±9.7	Time	0.088
	CON	37.3±16.2	35.6±9.7	Group	0.270
	EXP	36.6±8.2	40.1±6.3	Time×Group	0.740
RMSSD (ms)	CON	18.0±4.1	20.2±5.1	Time	14.335^*
	CON	18.0±4.1	20.2±5.1	Group	0.370
	EXP	17.6±3.8	22.7±4.6	Time×Group	2.417
TP (ms²)	CON	7.16±0.57	6.96±0.35	Time	0.006
	CON	7.16±0.57	6.96±0.35	Group	0.079
	EXP	7.03±0.76	7.21±0.66	Time×Group	1.437
LF (Hz)	CON	5.46±0.73	5.95±0.51^†	Time	0.337
	CON	5.46±0.73	5.95±0.51^†	Group	0.848
	EXP	5.67±0.45	5.29±0.67^†	Time×Group	21.450^*
HF (Hz)	CON	6.11±1.34	5.59±1.13^†	Time	2.573
	CON	6.11±1.34	5.59±1.13^†	Group	0.524
	EXP	5.44±0.67	5.56±1.15	Time×Group	6.476^*
LF/HF ratio	CON	0.93±0.23	1.10±0.23^†	Time	3.413
	CON	0.93±0.23	1.10±0.23^†	Group	0.010
	EXP	1.06±0.16	1.00±0.26	Time×Group	17.768^*
Salivary Cortisol (ug/dL)	CON	0.30±0.08	0.41±0.12^†	Time	4.440^*
	CON	0.30±0.08	0.41±0.12^†	Group	10.077^*
	EXP	0.26±0.08	0.23±0.06	Time×Group	12.452^*

Note. HRV = heart rate variability, Mean RR = average of all RR interval, SDDN = standard deviation of the RR interval, RMSSD = the square roof of the mean squared difference of successive RR interval, TP = total power, LF = low frequency, HF = high frequency, CON = control group, EXP = experimental group. //

Significant (P<.05) interaction or main effect //

^†

P<.05 vs. before training