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The Effects of Vitamin D Supplements on Sports Performance of Female Indoor Elite Athletes

NCT07748650 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 37

Last updated 2026-08-06

No results posted yet for this study

Summary

This study is a randomized, double-blind study evaluated the effects of 90 days of vitamin D supplementation, with or without calcium, on bone mineral density and sports performance in indoor female semiprofessional athletes.

Conditions

  • Female Indoor Athletes

Interventions

DRUG

Cholecalciferol (Vit D3)

Participants received 12 oral drops of vitamin D3 (cholecalciferol), providing a total daily dose of 5,000 IU (125 μg).

DRUG

Calcium & Vitamine D3

Participants received 12 oral drops of vitamin D3 (cholecalciferol), providing a total daily dose of 5,000 IU (125 μg), together with one 600 mg calcium tablet taken orally once daily.

DRUG

Placebo

Participants received a placebo which does not contain vitamin D (contains medium-chain fatty acid oil), and a calcium placebo.

Sponsors & Collaborators

  • Fu Jen Catholic University Hospital

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
20 Years
Sex
FEMALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2021-07-22
Primary Completion
2022-07-22
Completion
2022-12-31

Countries

  • Taiwan

Study Locations

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Entities

Drugs

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07748650 on ClinicalTrials.gov