From: Vitamin D supplementation during rehabilitation in COPD: a secondary analysis of a randomized trial
 | Placebo | Vit D | P-value |
---|---|---|---|
(n=25) | (n=24) | ||
Δ Exercise Performance |  |  |  |
6MWD (meter) | 11±74 | 40±55 | 0.130 |
VO2max (ml/min) | −20±187 | 110±211 | 0.029 |
Wmax (watt) | 3±13 | 10±13 | 0.053 |