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Effect of Supplemental Vitamin D on Skeletal Muscle Function in Chronic Obstructive Pulmonary Disease (COPD) Patients

This study has been completed.
Information provided by (Responsible Party):
Ken M. Kunisaki, Minneapolis Veterans Affairs Medical Center Identifier:
First received: June 4, 2009
Last updated: June 7, 2013
Last verified: June 2013
The purpose of this study is to determine whether or not vitamin D supplementation can improve physical performance in persons with severe chronic obstructive pulmonary disease (COPD).

Condition Intervention Phase
Chronic Obstructive Pulmonary Disease (COPD)
Dietary Supplement: Vitamin D (cholecalciferol)
Dietary Supplement: Placebo
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Effect of Supplemental Vitamin D on Skeletal Muscle Function in COPD Patients.

Resource links provided by NLM:

Further study details as provided by Minneapolis Veterans Affairs Medical Center:

Primary Outcome Measures:
  • Change in Short Physical Performance Battery (SPPB) Score [ Time Frame: Baseline and 6 weeks ]
    SPPB measures lower extremity strength using 3 simple office-based tests to assess standing balance, gait speed, and chair stands. The composite SPPB score ranges from 0 (worst performance) to 12 (best performance). The minimal clinically important difference is not fully agreed upon, although a difference of 1.0 point has been used in many studies.

Secondary Outcome Measures:
  • Change in Blood Level of Vitamin D (25-hydroxyvitamin D) [ Time Frame: Baseline and 6 weeks ]

Enrollment: 39
Study Start Date: June 2009
Study Completion Date: October 2011
Primary Completion Date: October 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Vitamin D
Cholecalciferol (2000 I.U. daily)
Dietary Supplement: Vitamin D (cholecalciferol)
2000 I.U. daily for 6 weeks
Placebo Comparator: Placebo
Placebo capsule (sugar pill daily)
Dietary Supplement: Placebo
Placebo (sugar pill) daily for 6 weeks


Ages Eligible for Study:   40 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • COPD
  • Forced expiratory volume in one second (FEV1) < or = 50% of predicted
  • Smoking history of at least 10 pack-years
  • Able to ambulate independently or with the use of an ambulatory assist device (such as a cane or walker)

Exclusion Criteria:

  • Currently taking > 500 I.U. per day of vitamin D supplements
  • Primary diagnosis of asthma
  • Uncompensated heart failure
  • Heart attack in the previous 6 months
  • Kidney disease (glomerular filtration rate < 45 mL/min/1.73m2)
  Contacts and Locations
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Please refer to this study by its identifier: NCT00914810

United States, Minnesota
Minneapolis VA Medical Center
Minneapolis, Minnesota, United States, 55417
Sponsors and Collaborators
Minneapolis Veterans Affairs Medical Center
Principal Investigator: Ken M. Kunisaki, M.D. Minneapolis Veterans Affairs Medical Center
  More Information

Responsible Party: Ken M. Kunisaki, Assistant Professor of Medicine and Staff Physician, Minneapolis Veterans Affairs Medical Center Identifier: NCT00914810     History of Changes
Other Study ID Numbers: 4129-A
Study First Received: June 4, 2009
Results First Received: April 22, 2013
Last Updated: June 7, 2013

Keywords provided by Minneapolis Veterans Affairs Medical Center:
Chronic obstructive pulmonary disease
Vitamin D
Skeletal muscle

Additional relevant MeSH terms:
Lung Diseases
Lung Diseases, Obstructive
Pulmonary Disease, Chronic Obstructive
Respiratory Tract Diseases
Vitamin D
Growth Substances
Physiological Effects of Drugs
Bone Density Conservation Agents processed this record on April 28, 2017