Cardiopulmonary exercise test results, showing measures of exercise intensity and outcome of exercise performance
| Cardiopulmonary exercise data (Mean±SD) | Total group n=70 | Group A n=33 | Group B n=37 | Comparison of group A and B |
| Heart rate at peak % predicted | 88.2 (7.8) | 89.1 (8.3) | 87.1 (7.3) | 0.61 |
| Respiratory rate at peak (B/min) | 40.4 (8.6) | 43.0 (7.1) | 38.0 (9.2) | 0.015 |
| Respiratory exchange ratio; (comparison with Ref 1.23±SD 0.09 Edvardson) | 1.27 (0.12) p 0.005 | 1.26 (0.13) 0.19 | 1.27 (0.12) 0.0075 | 0.25 |
| ∆ pH (peak – rest) | −0.12 (0.047) | −0.14 (0.048) | −0.11 (0.043) | 0.014 |
| ∆ HCO3– (peak – rest) | −7.1 (2.5) | −8.0 (2.6) | −6.2 (2.2) | 0.003 |
| ∆ lactate | 8.4 (2.8) | 9.7 (2.7) | 7.4 (2.4) | 0.002 |
| VO2 max, % predicted | 78.0 (13.7) | 89.6 (7.8) | 67.7 (8.6) | <0.0001 |
| Work, % predicted | 87.9 (14.2) | 97.7 (10.1) | 79.2 (11.3) | <0.0001 |
| VO2/work | 9.51 (1.3) | 10.03 (0.16) | 9.04 (0.23) | 0.0012 |
| AT, % predicted | 43.5 (10.0) | 49.7 (9.1) | 38.1 (7.8) | <0.0001 |
| O2 pulse, % predicted | 88.9 (16.3) | 101.8 (11.7) | 77.4 (9.8) | <0.0001 |
| BR% | 49.9 (13.2) | 44.2 (10.8) | 54.9 (13.1) | 0.0002 |
Comparison of groups A and D using Student’s t-test and χ2 test (Reference Data from Wasserman et al.,22 Edvardson et al25).
AT, anaerobic threshold; BR, breathing reserve.