| |
Baseline
|
Recovery
|
|---|
|
Parameters
|
C
|
S
|
C
|
S
|
|---|
|
Time Domain
| | | | |
|
VarRR (ms2)
|
1152 ± 39
|
717 ± 44*
|
1346 ± 130
|
890 ± 66*†
|
|
SDNN (ms)
|
40 ± 8
|
30 ± 5*
|
41 ± 6
|
44 ± 8†
|
|
rMSSD (ms)
|
34 ± 3
|
14 ± 2*
|
42 ± 4
|
35 ± 3†
|
|
pNN50 (%)
|
8.7 ± 1.0
|
2.2 ± 0.5*
|
17.3 ± 4.2†
|
7.5 ± 1.6*†
|
|
Frequency Domain
| | | | |
|
LF (ms2)
|
266 ± 80
|
216 ± 35
|
317 ± 81
|
244 ± 33†
|
|
LF (%)
|
23 ± 6
|
12 ± 4
|
21 ± 5
|
25 ± 8†
|
|
HF (ms2)
|
384 ± 75
|
55 ± 13*
|
533 ± 80
|
154 ± 30*†
|
|
HF (%)
|
33.1 ± 9
|
8.4 ± 2*
|
38.2 ± 6
|
16.3 ± 3*†
|
|
Symbolic analysis
| | | | |
|
0V (%)
|
21 ± 3
|
39.9 ± 2
|
24 ± 3
|
30.0 ± 3†
|
|
1V (%)
|
49 ± 1
|
42.5 ± 1
|
48 ± 2
|
45 ± 2
|
|
2V (%)
|
30 ± 3
|
17.3 ± 1
|
28 ± 4
|
25 ± 3†
|
- Values expressed as mean ± SD. C control group, S stroke group, VarRR variance of RR interval, SDNN standard deviation of the RR interval, rMSSD root-mean square of differences of successive RR intervals, pNN50% of differences of adjacent RR intervals > 50 ms, LF low frequency band in absolute and normalized values, HF high frequency band in absolute and normalized values, LF/HF low frequency/high frequency ratio; patterns with no variation (0 V; i. e., all 3 symbols were equal), (2) patterns with 1 variation (1 V; i. e., 2 symbols were equal and the remaining symbol was different), and patterns with 2 variations (2 V; i. e., all symbols were different from the previous ones) *P < 0.05 vs. C; †P < 0.05 vs. baseline in the same group; ‡P < 0.05 vs. post-exercise in the same group
