Non-frail (n = 33) | Prefrail (n = 10) | Comparative difference in HRV of each posture between two groups (p value) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Statistics | Pairwise comparisona (P value) | Statistics | ||||||||
Median (IQR) | χ 2 | P value | sd-ly | sd-st | ly-st | Median (IQR) | χ 2 | P value | ||
SDNN | 8.42 | 0.015 | 0.147 | 0.014 | > 0.999 | 3.80 | 0.150 | - | ||
Standing | 24.02 (12.67) | 21.82 (26.41) | 0.832c | |||||||
Sitting | 28.37 (12.41) | 34.13 (48.91) | 0.166b | |||||||
Lying | 25.05 (11.93) | 27.40 (33.27) | 0.561c | |||||||
RMSSD | 12.18 | 0.002 | 0.003 | 0.029 | > 0.999 | 0.60 | 0.741 | - | ||
Standing | 21.99 (13.59) | 27.25 (25.75) | 0.226c | |||||||
Sitting | 26.90 (15.25) | 38.42 (56.82) | 0.237c | |||||||
Lying | 29.54 (16.87) | 30.24 (37.53) | 0.620c | |||||||
LF | 7.34 | 0.025 | > 0.999 | 0.223 | 0.024 | 0.80 | 0.670 | - | ||
Standing | 189.26 (401.47) | 172.69 (342.98) | 0.899c | |||||||
Sitting | 248.40 (291.63) | 151.70 (921.76) | 0.832c | |||||||
Lying | 136.29 (217.69) | 150.30 (309.98) | 0.921c | |||||||
HF | 13.78 | 0.001 | 0.001 | 0.127 | 0.290 | 1.40 | 0.497 | - | ||
Standing | 96.34 (221.86) | 188.75 (391.81) | 0.125c | |||||||
Sitting | 195.66 (178.32) | 330.21 (656.83) | 0.286c | |||||||
Lying | 210.34 (247.38) | 241.83 (746.89) | 0.435c | |||||||
LF/HF | 16.78 | < 0.001 | < 0.001 | 0.886 | 0.011 | 1.40 | 0.497 | - | ||
Standing | 2.02 (3.72) | 1.21 (1.22) | 0.093c | |||||||
Sitting | 1.26 (2.41) | 0.57 (2.38) | 0.141c | |||||||
Lying | 0.77 (1.15) | 0.39 (1.30) | 0.204c |