The Effects of Vitamin D Supplements on Sports Performance of Female Indoor Elite Athletes | NCT07748650

NCT07748650

Overview

NCT ID: NCT07748650
Lead Sponsor: Fu Jen Catholic University HospitalOTHER
Official Title: The Effects of Vitamin D Supplements on Sports Performance of Female Indoor Elite Athletes: a Randomized Double-blind Controlled Study
Brief 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: Cholecalciferol (Vit D3)
Calcium & Vitamine D3

Status and Timeline

Status: Completed
Last Update Posted: Aug 6, 2026Actual
Start Date: Jul 22, 2021Actual
Primary Completion Date: Jul 22, 2022Actual
Completion Date

Participation Criteria

Ages Eligible for Study: Adult (18-64)Older Adult (65+)
Sexes Eligible for Study: Female
Accepts Healthy Volunteers?: Yes
Eligibility Criteria: Inclusion Criteria:

Athletes in Taiwan's top corporate league or semi-professional league that has been training and competing indoors for a long time.

Exclusion Criteria:

Under 20 years old

Pregnant

Being in vulnerable groups such as prisoners or mentally handicapped, disabled, etc.

Had skeletal muscle-related injuries or surgeris

Have kidney and/or liver disease, lipid malabsorption of calcium and vitamin

Having organ stones

Have taken supplments and/or calcium and/or vitamin D and/or other related health foods within two weeks

Study Plan

Study Type: Interventional
Phase: Not Applicable
Enrollment: 37Actual
Primary Purpose: Treatment
Allocation: Randomized
Interventional Model: Parallel Assignment
Masking

Contacts and Locations

Central Contacts: No data available
Locations: Fu Jen Catholic University Hospital

Similar Studies

Participant Group/Arms

Vitamin D groupExperimental

Participants received daily vitamin D of 5000 IU (125 μg) throughout the intervention period.

Drug: Cholecalciferol (Vit D3)

Vitamin D and Calcium groupActive Comparator

Participants received one calcium tablet (600mg) daily and daily vitamin D of 5000 IU (125 μg) throughout the intervention period.

Drug: Calcium & Vitamine D3

Control GroupPlacebo Comparator

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

Drug: Placebo

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