REVISTA DA ASSOCIACAO MEDICA BRASILEIRA, cilt.61, sa.2, ss.132-138, 2015 (SCI-Expanded)
Objectives: vitamin D is important for muscle function and it affects different aspects of muscle metabolism. This study aim to determine whether serum 25(OH) D levels are related to lung functions, physical performance and balance in patients with chronic obstructive pulmonary disease (COPD).