Table.
Median (25th, 75th percentile) general results from seven subjects
| Control | Last 50 s handgrip | First 50 s ischaemia | Last 50 s ischaemia | First 50 s recovery | |
|---|---|---|---|---|---|
| †Systolic pressures (mmHg) | 135 (126, 145) A |
187 (170, 197) B |
167 (151, 193) C |
163 (157,190) C |
136 (134, 166) A |
| ‡R-R intervals (s) | 1.01 (0.92, 1.03) A |
0.75 (0.67, 0.83) B |
0.93 (0.9, 0.96) | 0.95 (0.85, 1.03) A |
0.97 (0.9, 1.05) A |
| ‡R-R interval RMSSD (ms) | 23 (20, 42) | 18 (16, 34) A |
57 (28, 119) B |
33 (23, 40) | 35 (25, 45) B |
| †R-R interval pNN50 (%) | 3.3 (0.5, 23.1) | 1.9 (0.4, 12.5) A |
13.7 (4.1, 31) B |
11.4 (2.6, 23.5) | 12 (3.6, 19.9) |
| ‡Low-frequency transfer function vagal baroreflex peak gain (ms/mmHg) | 16.6 (11.9, 19.1) | 8.4 (4.6, 11.9) A |
17.7 (12.8, 26.5) | 13, (11.1, 15.8) | 16.2 (1426.7) B |
| ‡Diastolic pressure (mmHg) | 67 (66, 74) A |
94 (93, 105) B |
81 (78, 99) | 89 (81, 101) B |
68 (65, 82) AC |
| †Muscle sympathetic nerve activity (normalized area/burst * bursts) | 17 (8, 20) A |
64 (49, 73) B |
61 (46, 78) B |
62 (60, 88) B |
28 (26, 38) A |
Values with the same letter are not significantly different; values with different letters are significantly different. RMSSD = square root of the mean squared differences of successive normal R-R intervals; pNN50 = number of successive normal R-R intervals ≥ 50 ms total number−1.
†
One way repeated measures analysis of variance, Holm-Sidak method
‡
Friedman repeated measures analysis of variance on ranks, Tukey test.