Table 3.
Heart Rate Recovery Indices of Subjects on 1st, 7th, and 30th Days
| Parameter | 1st Day | 7th Day | 30th Day | ICC/α (Lower‐Upper Bound)a | CV (Min‐Max) | P Valueb |
|---|---|---|---|---|---|---|
| HRR1c | 33.5 ± 10.4 | 33.8 ± 10.1 | 33.4 ± 11.0 | 0.88/0.95 | 0.9–23.2 | 0.000 |
| (30.6–36.3) | (30.9–36.6) | (30.3–36.4) | (0.81–0.92) | |||
| HRR2c | 59.3 ± 9.6 | 59.4 ± 10.4 | 59.4 ± 11.7 | 0.88/0.9 | 0–12.4 | 0.000 |
| (56.6–61.9) | (56.5–62.3) | (56.1–62.6) | (0.82–0.92) | |||
| HRR3c | 69.1 ± 10.3 | 70.2 ± 10.4 | 69.7 ± 10.6 | 0.85/0.94 | 0.6–10.9 | 0.000 |
| (66.2–71.9) | (67.3–73.1) | (66.8–72.7) | (0.78–0.91) | |||
| HRR4c | 72.7 ± 9.3 | 73.5 ± 8.4 | 73.7 ± 8.6 | 0.80/0.92 | 0.9–12.3 | 0.000 |
| (70.1–75.3) | (71.2–75.9) | (71.3–76.1) | (0.70–0.87) | |||
| HRR5c | 76.2 ± 9.4 | 76.7 ± 9.1 | 76.5 ± 8.2 | 0.82/0.93 | 0–10.1 | 0.000 |
| (73.6–78.8) | (74.1–79.2) | (74.2–78.8) | (0.73–0.88) |
aLower and upper bounds are for ICCs; bP values are for ICCs; cHRR = heart rate recovery; heart rate: beats/min, HRR values are mean ± SD (95% CI for mean).