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This phase IIb randomized trial studies how well cholecalciferol (vitamin D3) supplementation works in strengthening inspiratory muscles in cholecalciferol-deficient patients with chronic obstructive pulmonary disease (COPD). Cholecalciferol supplementation may help reduce the risk of developing lung cancer and strengthen the diaphragm in cholecalciferol-deficient patients with COPD.
I. To establish the effect of D vitamin (vitamin D3) supplementation on inspiratory muscle strength in vitamin D3-deficient chronic obstructive pulmonary disease (COPD) patients. (Roswell Park Cancer Institute [RPCI]/University at Buffalo [UB] study) II. To establish the 12 month conversion rate. (University of Pittsburgh Cancer Institute [UPCI] study)
I. To establish the effect of vitamin D3 supplementation on peripheral muscle strength and exercise capacity in vitamin D3-deficient COPD patients. (RPCI/UB study) II. To establish the 3 and 6-month conversion rates. (UPCI study) III. To examine whether vitamin D3 supplementation is equally effective in COPD patients who are current versus former smokers. (UPCI study)
I. To explore the effects of vitamin D3 supplementation in COPD patients on biomarkers of lung cancer risk, inflammation, and pulmonary function. (UPCI study)
OUTLINE: Patients are randomized to 1 of 2 arms.
CONTROL ARM: Patients receive a placebo and multivitamin orally (PO) once daily (QD) for 52 weeks.
SUPPLEMENTATION ARM: Patients receive a multivitamin and cholecalciferol supplement PO QD for 52 weeks.
After completion of study treatment, patients are followed up for 1 year.
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Prevention
Chronic Obstructive Pulmonary Disease
Cholecalciferol, Laboratory Biomarker Analysis, Multivitamin, Placebo, Questionnaire Administration
Roswell Park Cancer Institute
Roswell Park Cancer Institute
Published on BioPortfolio: 2016-08-25T12:23:21-0400
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