Comparison of Sunlight Exposure and Vitamin D Supplementation on Serum 25-hydroxyvitamin D Levels
Comparison of Sunlight Exposure and Oral Vitamin D Supplementation on Serum 25-hydroxyvitamin D Concentration and Metabolic Markers in Korean Young Adults: a Randomized Clinical Trial
調査の概要
状態
研究の種類
入学 (実際)
段階
- 適用できない
参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Serum 25(OH)vitamin D < 12ng/mL
- age between 18 and 39 years
- Korean men and women
Exclusion Criteria:
- Vitamin D supplementation within 2 months
- Photosensitivity or UV allergy
- History of hyperparathyroidism/hypercalciuria/kidney stone/skin cancer and other cancer
- Under medication for hypertension, dyslipidemia, and diabetes
- Intake of photosensitive medicine during study period
- Exposure of strong UV (e.g., beach, sun tanning) during study period
- Pregnant/breast-feeding women
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:4倍
武器と介入
参加者グループ / アーム |
介入・治療 |
---|---|
実験的:Sunlight Exposure
Everyday sunlight exposure around noon for 20-30 minutes for 8 weeks
|
|
実験的:Vitamin D Supplementation
Supplementation of vitamin D3 500 IU/day for 8 weeks
|
- Supplementation of vitamin D3 500 IU/day for 8 weeks
|
プラセボコンパレーター:Placebo
Intake of placebo for 8 weeks
|
- Intake of placebo for 8 weeks
|
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
---|---|---|
Serum 25(OH)D
時間枠:Baseline, 4 week, and 8 week
|
Changes in serum 25(OH)D levels in ng/mL
|
Baseline, 4 week, and 8 week
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
---|---|---|
BMI
時間枠:Baseline, 4 week, and 8 week
|
Weight and height will be combined to report BMI in kg/m^2
|
Baseline, 4 week, and 8 week
|
Systolic blood pressure
時間枠:Baseline, 4 week, and 8 week
|
Systolic blood pressure changes in mmHg
|
Baseline, 4 week, and 8 week
|
Diastolic blood pressure
時間枠:Baseline, 4 week, and 8 week
|
Diastolic blood pressure changes in mmHg
|
Baseline, 4 week, and 8 week
|
Lipid panel
時間枠:Baseline and 8 week
|
Serum total cholesterol, triglycerides, HDL cholesterol, and LDL cholesterol in mg/dL
|
Baseline and 8 week
|
Fasting glucose
時間枠:Baseline and 8 week
|
Serum fasting glucose in mg/dL
|
Baseline and 8 week
|
AST
時間枠:Baseline and 8 week
|
Serum AST levels in mg/dL
|
Baseline and 8 week
|
ALT
時間枠:Baseline and 8 week
|
Serum ALT levels in mg/dL
|
Baseline and 8 week
|
GGT
時間枠:Baseline and 8 week
|
Serum AST, ALT, and GGT levels in mg/dL
|
Baseline and 8 week
|
Intact PTH
時間枠:Baseline and 8 week
|
Serum intact PTH levels in mg/dL
|
Baseline and 8 week
|
Whole body BMD and BMC
時間枠:Baseline and 8 week
|
Whole body BMD (g/cm^2) and BMC (kg) measured by DEXA
|
Baseline and 8 week
|
Lean body mass, fat mass, and percent fat
時間枠:Baseline and 8 week
|
Lean body mass (kg), fat mass (kg), and percent fat (%) measured by DEXA
|
Baseline and 8 week
|
Lean body mass, muscle mass, skeletal muscle mass, fat mass, and percent fat
時間枠:Baseline, 4 week, and 8 week
|
Lean body mass (kg), muscle mass (kg), skeletal muscle mass (kg), fat mass (kg), and percent fat (%) measured by body impedance analysis
|
Baseline, 4 week, and 8 week
|
EQ-5D-5L
時間枠:Baseline, 4 week, and 8 week
|
Quality of life measured using EQ-5D-5L scale. The EQ-5D is a standardised measure of health status developed by the EuroQol Group in order to provide a simple, generic measure of health status. In description part, health status is measured in terms of five dimensions (5D); mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. The respondents self-rate their level of severity for each dimension using three-level (EQ-5D-3L) or five-level (EQ-5D-5L) scale. The 5-level version of EQ-5D (EQ-5D-5L) was developed to improve such constraints of the three-level scale. EQ-5D-5L scale can define 3,125 (=5^5) different health states, and the 5-digit number can be converted into a preference weight which is also referred to as a single weighted index score. The index score of a value set derived from the general population sample can be regarded as a "societal valuation of the respondent's health state" in that country. |
Baseline, 4 week, and 8 week
|
協力者と研究者
捜査官
- 主任研究者:Hee-Kyung Joh, PhD、Seoul National University College of Medicine/Seoul National University Hospital
出版物と役立つリンク
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。
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