NCT01199926

Effect of Vitamin D Supplementation on Muscle Mass and Function

Impact of Vitamin D Supplementation on Strength and Lean Mass Accumulation During an Exercise Intervention

• Status: Completed
• Phase: Phase 4
• Study type: Interventional
• Enrollment: 34 (actual)
• Sponsor: Purdue University · Academic / Other
• Sex: All
• Age: 18 Years – 35 Years
• Healthy volunteers: Accepted

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.

Detailed description

The study was designed to assess the effects of vitamin D supplementation during exercise training on body composition, muscle function, and glucose tolerance. It was a double-blind, randomized, placebo-controlled, clinical trial with participants randomized into either a 4,000 IU/day vitamin D or placebo group and all participants completed 12 wks (3 d/wk) of exercise training.

Conditions

• Obesity
• Insulin Resistance
• Inflammation

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Vitamin D	4000 IU of vitamin D per day for 12 weeks.
DRUG	Placebo	Placebo (microcrystalline cellulose) ingestion each day for 12 weeks.

Timeline

• Start date: 2008-08-01
• Primary completion: 2009-07-01
• Completion: 2010-02-01
• First posted: 2010-09-13
• Last updated: 2015-05-15
• Results posted: 2015-05-15

Locations

1 site across 1 country: United States