Table 2.

Heart rate behavior between groups.

Stage	Heart rate (bpm) (mean ± SD)		p value
	Experimental group (n = 57)	Control group (n = 57)
T1	73.89 ± 8.67	71.88 ± 6.67	0.17
T2	73.49 ± 9.21	72.14 ± 6.98	0.38
T3	70.53 ± 9.11	71.07 ± 7.16	0.72
T4	73.67 ± 9.37	71.49 ± 7.13	0.17
T5	70.91 ± 8.66	71.72 ± 6.69	0.58
T6	73.16 ± 8.79	71.87 ± 7.29	0.40

SD: standard deviation. Table 3 shows the HRV of each stage between groups. There was a statistically significant difference in HRV between groups at the T1, T2, T4, and T6 stages (p < 0.05 Mann-Whitney U test). There was no statistically significant difference in HRV between groups in stages T3 and T5 (p > 0.05 Mann-Whitney U test).