- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT03310242
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
Studieoversikt
Status
Intervensjon / Behandling
Studietype
Registrering (Faktiske)
Fase
- Ikke aktuelt
Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
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
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Behandling
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Firemannsrom
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
|
Eksperimentell: Sunlight Exposure
Everyday sunlight exposure around noon for 20-30 minutes for 8 weeks
|
|
|
Eksperimentell: Vitamin D Supplementation
Supplementation of vitamin D3 500 IU/day for 8 weeks
|
- Supplementation of vitamin D3 500 IU/day for 8 weeks
|
|
Placebo komparator: Placebo
Intake of placebo for 8 weeks
|
- Intake of placebo for 8 weeks
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Serum 25(OH)D
Tidsramme: Baseline, 4 week, and 8 week
|
Changes in serum 25(OH)D levels in ng/mL
|
Baseline, 4 week, and 8 week
|
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
BMI
Tidsramme: 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
Tidsramme: Baseline, 4 week, and 8 week
|
Systolic blood pressure changes in mmHg
|
Baseline, 4 week, and 8 week
|
|
Diastolic blood pressure
Tidsramme: Baseline, 4 week, and 8 week
|
Diastolic blood pressure changes in mmHg
|
Baseline, 4 week, and 8 week
|
|
Lipid panel
Tidsramme: Baseline and 8 week
|
Serum total cholesterol, triglycerides, HDL cholesterol, and LDL cholesterol in mg/dL
|
Baseline and 8 week
|
|
Fasting glucose
Tidsramme: Baseline and 8 week
|
Serum fasting glucose in mg/dL
|
Baseline and 8 week
|
|
AST
Tidsramme: Baseline and 8 week
|
Serum AST levels in mg/dL
|
Baseline and 8 week
|
|
ALT
Tidsramme: Baseline and 8 week
|
Serum ALT levels in mg/dL
|
Baseline and 8 week
|
|
GGT
Tidsramme: Baseline and 8 week
|
Serum AST, ALT, and GGT levels in mg/dL
|
Baseline and 8 week
|
|
Intact PTH
Tidsramme: Baseline and 8 week
|
Serum intact PTH levels in mg/dL
|
Baseline and 8 week
|
|
Whole body BMD and BMC
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
|
Samarbeidspartnere og etterforskere
Etterforskere
- Hovedetterforsker: Hee-Kyung Joh, PhD, Seoul National University College of Medicine/Seoul National University Hospital
Publikasjoner og nyttige lenker
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Primær fullføring (Faktiske)
Studiet fullført (Faktiske)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- H-1504-112-668
Plan for individuelle deltakerdata (IPD)
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