Effect of Vitamin D Supplementation on Muscle Mass and Function

• Status: Completed
• Trial end date: 2010-02-01
• Target enrollment: 0
• Participant gender: All

Summary

The study was designed to assess the effects of vitamin D supplementation during exercise training on body composition, muscle function, and glucose tolerance. The investigators hypothesis for these studies is that vitamin D supplementation enhances exercise-induced increases in strength and lean mass, potentially through enhancing insulin sensitivity and reducing inflammation.

• Phase: Phase 4
• Accepts Healthy Volunteers?: Accepts Healthy Volunteers

Details

• Lead Sponsor: Purdue University
• Treatments: Cholecalciferol; Ergocalciferols; Vitamin D; Vitamins

Criteria

Inclusion Criteria:

• Physical activity scores in the "low" to "very low" category

• Fitness estimations in the "below average" or lower categories

• body mass index scores >24.9 indicating overweight or obesity.

Exclusion Criteria:

• Use of tanning booths or other artificial UV light exposure

• High baseline vitamin D and calcium intake

• Plans to visit sunny/warm destinations during the winter months/study period

• History or presence of metabolic disease, type 2 diabetes, eating disorders, gastrointestinal disorders, pregnancy or lactation

• Use of drugs to treat obesity (last 12 weeks)

• Use of over the counter anti-obesity agents (last 12 weeks)

• Recent initiation of an exercise program (last four weeks).