Effects of focus training on heart rate variability in post-stroke fatigue patients

Table 2 Comparison of HRV time domain indexes in the two groups (\(\overline{x}\) ± s)

Group	Research group (n = 30)	Control group (n = 30)	t	p
SDNN (ms)
Before intervention	43.12 ± 7.01	42.59 ± 6.89	0.295	0.769
After intervention	109.45 ± 7.45^a	80.12 ± 5.69^a	17.137	< 0.001
SDANN (ms)
Before intervention	36.98 ± 5.12	37.01 ± 6.02	0.021	0.984
After intervention	95.52 ± 9.56^a	65.11 ± 8.65^a	12.919	< 0.001
RMSSD (ms)
Before intervention	14.29 ± 4.67	14.32 ± 4.72	0.025	0.98
After intervention	3.32 ± 1.74^a	7.02 ± 2.11^a	7.411	< 0.001
pNN50
Before intervention	6.41 ± 1.79	6.33 ± 1.82	0.172	0.864
After intervention	1.29 ± 0.79^a	3.46 ± 1.02^a	9.213	< 0.001

To compared with the same group before the intervention
SDNN, the standard deviation of 24-h normal R-R interval; SDANN, the mean standard deviation of R-R interval every five minutes in 24 h; RMSSD, the mean the square root of difference between adjacent R-R intervals at 24 h; pNN50, the 24-h adjacent R-R interval difference of > 50 ms percentage
^aP < 0.05

ISSN: 1479-5876