Clinical Study

Additional Effects of Nutritional Antioxidant Supplementation on Peripheral Muscle during Pulmonary Rehabilitation in COPD Patients: A Randomized Controlled Trial

Figure 2

Box-and-whisker plots for relative change (%) in functional parameters: (a) quadriceps maximal voluntary contraction () and (b) quadriceps type I oxidative fiber proportion. , , and . #Group effect adjusted on the corticosteroid treatment. ##Group effect adjusted on the baseline value and interaction term.
(a)
(b)