NCT05779410

Vitamin D in Healthy Adults After Strenuous Endurance Exercise

Effects of Vitamin D Supplementation on Biochemical Responses and Aerobic Capacity After Strenuous Endurance Exercise

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 35 (actual)
• Sponsor: Taipei Medical University · Academic / Other
• Sex: Male
• Age: 20 Years – 40 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study was to investigate the effects of vitamin D supplementation on biochemical response and aerobic capacity after strenuous endurance exercise (SEE).

Detailed description

All participants conducted a graded exercise test on an ergometric bicycle to determine the maximal oxygen consumption (VO2max) before and after supplementation, and the speed equivalent to 65% VO2max was conducted for a SEE test by ergometric bicycle for 2 hours, followed by increasing 100 RPM until exhaustion. Venous blood samples were drawn before, immediately after, 2-hour after, 4-hour after, 8-hour after, and 24-hour after the SEE test to determine the concentrations of biomarkers. Data was analyzed by Two-way mixed design ANOVA.

Conditions

• Healthy

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Vitamin D	Participants received 5,000 IU of vitamin D orally twice daily for 4 weeks
DIETARY_SUPPLEMENT	Medium-chain triglycerides	Participants received the same amount of placebo matching vitamin D orally twice daily for 4 weeks

Timeline

• Start date: 2021-01-20
• Primary completion: 2021-12-08
• Completion: 2021-12-08
• First posted: 2023-03-22
• Last updated: 2023-03-22

Locations

1 site across 1 country: Taiwan