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Evaluation of Potential Vitamin D Effects on Muscle: a Pilot Study

This study has been completed.
Information provided by (Responsible Party):
University of Wisconsin, Madison Identifier:
First received: January 2, 2008
Last updated: October 1, 2015
Last verified: May 2010
People who do not have adequate amounts of vitamin D develop weakness of leg and arm muscles. This study will determine if vitamin D supplementation benefits muscle functions important for swallowing, bladder and bowel function.

Condition Intervention
Dysphagia Fecal Incontinence Urinary Incontinence Other: Ergocalciferol (vitamin D2)

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Evaluation of Potential Vitamin D Effects on Muscle: a Pilot Study

Resource links provided by NLM:

Further study details as provided by University of Wisconsin, Madison:

Primary Outcome Measures:
  • change in lingual strength and perceived swallow function [ Time Frame: 4 weeks ]

Secondary Outcome Measures:
  • change in perceived bowel and bladder function [ Time Frame: 4 weeks ]

Estimated Enrollment: 50
Study Start Date: July 2006
Primary Completion Date: May 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: 1
oral placebo 3 times weekly
Other: Ergocalciferol (vitamin D2)
50,000 IU 3 times weekly for 4 weeks


Ages Eligible for Study:   70 Years and older   (Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Patients who present for evaluation to the UW Geriatric clinic including Dr. Pryzbelski's subspecialty, or Osteoporosis clinics
  • Age 70 years or older
  • Cognitively intact, as determined by the attending physicians at above mentioned clinics

Exclusion Criteria:

  • History of, on ongoing, renal failure
  • History of liver failure
  • Known malabsorption
  • Known disorders of parathyroid function, hyper/hypocalcemia, or other abnormalities of calcium or phosphate metabolism
  • Known history of vitamin D intoxication or granulomatous disease
  • active seizure disorder
  • Pain associated with temporomandibular joint (TMJ)
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00593996

United States, Wisconsin
UW Osteoporosis Clinical Research Program
Madison, Wisconsin, United States, 53705
Sponsors and Collaborators
University of Wisconsin, Madison
Principal Investigator: Neil Binkley, MD Univ. of Wisconsin - Institute on Aging
  More Information

Responsible Party: University of Wisconsin, Madison Identifier: NCT00593996     History of Changes
Other Study ID Numbers: 2005-1224
Study First Received: January 2, 2008
Last Updated: October 1, 2015

Additional relevant MeSH terms:
Urinary Incontinence
Fecal Incontinence
Urination Disorders
Urologic Diseases
Lower Urinary Tract Symptoms
Urological Manifestations
Signs and Symptoms
Behavioral Symptoms
Elimination Disorders
Mental Disorders
Rectal Diseases
Intestinal Diseases
Gastrointestinal Diseases
Digestive System Diseases
Vitamin D
Growth Substances
Physiological Effects of Drugs
Bone Density Conservation Agents processed this record on September 21, 2017