- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT01488227
A Prospective Trial on the Effects of Vitamin D Supplementation in Collegiate Swimmers and Divers
A Prospective Trial on the Effects of Vitamin D Supplementation on 25(OH)D, Body Composition and Injury in Collegiate Swimmers and Divers
Objective 1: Determine if Vitamin D supplementation can improve body composition, reduce injuries and illnesses, and improve performance in collegiate swimmers and divers.
Objective 2: Examine how baseline Vitamin D levels predict outcome variables over the course of the intervention period.
연구 개요
상세 설명
The investigators plan to recruit from approximately 45 male and female University of Kentucky Swimmers and Divers, at least 18 years of age in August 2011. Approximately equal numbers of men and women will be recruited. The entire athletic team(s) will be recruited. With a conservative dropout rate of 30%, the investigators final sample size should be approximately 22 participants (per group).Following baseline measures, participants will be randomized to one of two groups (Vitamin D 4000 IU or Placebo control) and monitored over the course of their athletic season. Measurements will be repeated at Midpoint (3 months) and Endpoint (6 months).
Participants will have no recent history of Vitamin D supplementation beyond what is normally found in a multivitamin (400 IUs).
Following the informed consent process a medical history and Vitamin D questionnaire (screenings), and urine pregnancy test (for female athletes) will be administered prior to more invasive baseline testing procedures (blood draw and DXA). A blood draw will then be conducted at baseline, midpoint and endpoint. Collected blood for the purposes of this study will assess Vitamin D status (25(OH)D), parathyroid hormone, ionized calcium, bone turnover markers, and inflammatory cytokines. A Vitamin D lifestyle questionnaire will be administered at all 3 time points and incidence of illness and injury will be documented over 6 months following randomization. DXA measures will only occur at Baseline and Endpoint.
연구 유형
등록 (실제)
단계
- 3단계
연락처 및 위치
연구 장소
-
-
Kentucky
-
Lexington, Kentucky, 미국, 40506
- University Of Kentucky
-
-
참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
Inclusion Criteria:
- University of Kentucky Swimmers and Divers, at least 18 years old.
- No recent history of Vitamin D supplementation beyond 400IU
Exclusion Criteria:
- hormone replacement therapy,
- high dose Vitamin D supplementation,
- history of renal disease or kidney stones,
- organ transplantation,
- sarcoidosis,
- parathyroid disease,
- history of high blood calcium levels.
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 네 배로
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
|
실험적: Vitamin D
|
4000 IU of Vitamin D daily for 6 months
다른 이름들:
|
|
위약 비교기: Oil pill
Contains vegetable and soybean oil supplied by Nature Made by Pharmavite LLC located in Northridge, CA and is United States Pharmacopeia (USP) certified.
|
Acts as a control for the Vitamin D intervention
다른 이름들:
|
연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
|
25(OH)D)
기간: 3 measurement periods over 6 months
|
Baseline, Midpoint, and Endpoint measures include a blood draw for 25(OH)D status.
|
3 measurement periods over 6 months
|
2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
|
Inflammatory Cytokines
기간: Baseline and Enpoint
|
Baselineand Endpoint measures include a blood draw inflammatory cytokines (TNF alpha, IL1-B, IL6)
|
Baseline and Enpoint
|
|
Bone Turnover Markers
기간: Baseline, Midpoint, Endpoint
|
Baseline, Midpoint, and Endpoint measures include a blood draw for bone turnover markers (BSAP, NTx).
|
Baseline, Midpoint, Endpoint
|
|
DXA Body Composition
기간: Baseline and Endpoint
|
Baseline and Endpoint measures include Body Composition measures (DXA) for fat, muscle and bone composition
|
Baseline and Endpoint
|
|
Vitamin D Lifestyle Survey
기간: Baseline, Midpoint, Endpoint
|
Baseline, Midpoint, and Endpoint measures include a behavioral survey for estimating 25(OH)D status (solar exposure, food and other supplemental intake)
|
Baseline, Midpoint, Endpoint
|
|
injury and illness incidence
기간: 6 months
|
We will track injury and illness type and incidence over the course of the 6 month intervention
|
6 months
|
공동 작업자 및 조사자
수사관
- 연구 책임자: Maja Redzic, B.S., University Of Kentucky
- 연구 책임자: Regina M Lewis, B.S., University Of Kentucky
- 수석 연구원: David T Thomas, PhD, University Of Kentucky
연구 기록 날짜
연구 주요 날짜
연구 시작
기본 완료 (실제)
연구 완료 (실제)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (추정)
연구 기록 업데이트
마지막 업데이트 게시됨 (추정)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .
Vitamin D에 대한 임상 시험
-
Johns Hopkins UniversityNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)완전한
-
Haukeland University HospitalNorwegian Foundation for Health and Rehabilitation; Foundation to Promote Research into...완전한
-
Haukeland University HospitalNorwegian Foundation for Health and Rehabilitation; Foundation to Promote Research into...완전한
-
Hospital Clinic of Barcelona알려지지 않은
-
Haukeland University HospitalNorwegian Foundation for Health and Rehabilitation; Foundation to Promote Research into...완전한
-
Johns Hopkins UniversityNational Institute of Allergy and Infectious Diseases (NIAID)모병
-
University of AarhusNovo Nordisk A/S; Aarhus University Hospital; AP Moeller Foundation; Danish Diabetes Academy완전한