Heart rate (beats/min) | Total power (ms2) | VLF (ms2) | LF (ms2) | HF (ms2) | LF/HF | |
---|---|---|---|---|---|---|
Whole period | ||||||
Athletes | 60 (6) | 1971 (609) | 944 (284) | 673 (244) | 353 (349) | 3.07 (1.30) |
Controls | 69 (4) | 1370 (447) | 668 (173) | 492 (290) | 209 (172) | 3.30 (1.27) |
p value | 0.008 | 0.034 | 0.032 | 0.089 | 0.125 | 0.710 |
Night (0000–0500) | ||||||
Athletes | 53 (5) | 2102 (964) | 863 (267) | 764 (327) | 475 (654) | 3.07 (1.77) |
Controls | 59 (3) | 1945 (739) | 889 (398) | 728 (485) | 328 (48) | 3.26 (1.96) |
p value | 0.011 | 0.770 | 0.983 | 0.697 | 0.608 | 0.823 |
Day (0730–2130) | ||||||
Athletes | 66 (9) | 1788 (577) | 934 (331) | 587 (250) | 267 (163) | 3.05 (1.34) |
Controls | 76 (7) | 1013 (342) | 539 (152) | 346 (177) | 127 (41) | 3.44 (0.82) |
p value | 0.013 | 0.005 | 0.009 | 0.021 | 0.010 | 0.491 |
Frequency domain measures of RR variability in male veteran athletes and healthy controls obtained from 48 hour ambulatory ECGs. Values are mean (SD).
Total power, 0.0033–0.40 Hz, (ms2); VLF, very low frequency power, 0.0033–0.04 Hz; LF, low frequency power, 0.04–0.15 Hz; HF, high frequency power, 0.15–0.40 Hz.