Table 2.
Variable | Rate of Change per Year of Follow-Up (Mean ± SD) | p Value* |
---|---|---|
Peak oxygen consumption (ml/kg/min/year) | −0.8 ± 3.1 | <0.001 |
Peak percentage of predicted oxygen consumption (% points/year) | −1.4 ± 9.2 | 0.04 |
Peak percentage of predicted oxygen pulse (% points/year) | −1.8 ± 11.4 | 0.02 |
Slope of minute ventilation vs carbon dioxide production relation (change/year) | −0.2 ± 3 | 0.38 |
Percentage of predicted forced vital capacity (% points/year) | −0.3 ± 5.5 | 0.49 |
Percentage of predicted volume of air exhaled in first second of forced exhalation (% points/year) | −0.1 ± 4.6 | 0.86 |
Heart rate at peak exercise (beats/min/year) | −0.4 ± 11.3 | 0.60 |
Peak percentage of predicted heart rate (% points/year) | 0.3 ± 5.8 | 0.40 |
Body mass index (kg/m2 per year) | 0.4 ± 1.4 | <0.001 |
Body mass index Z score (change/year) | 0.02 ± 0.3 | 0.37 |
p Value from 1-sample t test comparing mean slope to 0.