Table 2 Measurements at the lactic threshold and at peak symptom-limited incremental cycle exercise
From: Relationship between daily physical activity and aerobic fitness in adults with cystic fibrosis
| Â | LT | Peak exercise | ||||
|---|---|---|---|---|---|---|
Variable | CF (n = 30) | Control (n = 15) | p-value | CF (n = 30) | Control (n = 15) | p-value |
Dyspnea, Borg scale | 1 ± 1 | 1.1 ± 1.3 | 0.8 | 4.5 ± 2.3 | 5.9 ± 2.1 | 0.02 |
Leg discomfort, Borg scale | 1.2 ± 1.07 | 1.3 ± 1.3 | 0.8 | 6 ± 1.9 | 7.5 ± 1.3 | 0.01 |
Work rate, W | 80 ± 35 | 88 ± 25 | 0.4 | 168.6 ± 35.6 | 214 ± 53 | 0.001 |
% predicted maximum | 41.3 ± 14.9 | 40 ± 7 | 0.7 | 89.03 ± 18.6 | 97.2 ± 15 | 0.1 |
V’O 2 , ml/min | 1186.2 ± 327 | 1373 ± 306 | 0.07 | 1910.8 ± 468.6 | 2663.2 ± 774 | 0.001 |
% predicted maximum | 47 ± 9 | 48 ± 7 | 0.66 | 76 ± 13 | 93 ± 16 | 0.0006 |
V’O 2 ,ml/min/kg | 17.9 ± 4 | 18.7 ± 2.3 | 0.48 | 28.7 ± 5.02 | 35.9 ± 6 | 0.0001 |
HR, beats∙min −1 | 118 ± 16 | 119 ± 15 | 0.84 | 154 ± 12 | 176 ± 10.5 | <0.0001 |
% predicted maximum | 63.5 ± 9 | 63 ± 8 | 0.83 | 83 ± 8 | 92 ± 3 | <0.0001 |
O 2 pulse, ml O 2 /beat | 10.1 ± 2.5 | 11.6 ± 2.8 | 0.06 | 12.3 ± 2.9 | 15.1 ± 4.6 | 0.01 |
SpO 2 , % | 96 ± 1.8 | 97.6 ± 1 | 0.04 | 94 ± 2.9 | 97.6 ± 0.8 | <0.0001 |
V’ E , l/min | 33.3 ± 10.7 | 31.6 ± 5.5 | 0.57 | 69.3 ± 20.9 | 102.6 ± 30.9 | 0.0001 |
V’ E /MVC, % | 21.9 ± 5.1 | 19.5 ± 3.1 | 0.11 | 45.6 ± 10.5 | 62.3 ± 13.9 | <0.0001 |