An interventional study of Sunlight Exposure and Vitamin D Supplementation in Vitamin D Deficiency and Cardiometabolic Risk Factors, sponsored by Seoul National University Hospital. Completed. Open to participants aged 18 Years to 39 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2017-10-31.
Sponsored by Seoul National University Hospital · Not applicable, Interventional, and Treatment
Among 154 studies testing Vitamin D in Vitamin D Deficiency — 15 open to participants now, 16 under way, none of them phase 3. Vitamin D · Vitamin D Deficiency.
Among the 154 studies testing Vitamin D in Vitamin D Deficiency, this one is the 28th largest by enrollment of the 153 interventional ones that give a count, is one of 9 that started in 2015, is one of 87 with no phase, and was the 89th registered.
801 studies on the registry are indexed under Vitamin D Deficiency; 60 are open to participants now.
Browse Vitamin D Deficiency studies →15 of the 154 studies testing Vitamin D in Vitamin D Deficiency are open now, in 8 countries. Recruiting first, the newest first:
Yale University · Sites in United States
Ages 13–21 · Women only
Future University in Egypt · Sites in Egypt
Ages 20–60 · Healthy volunteers
The Jerzy Kukuczka Academy of Physical Education in Katowice · Sites in Poland
Ages 17–60 · Healthy volunteers
Bangladesh Medical University · Sites in Bangladesh
Ages 51–70 · Men only
Bangladesh Medical University · Sites in Bangladesh
Ages 20–40 · Men only
By country, each count listing its studies:
No approval found in the FDA or EMA files read. How studies give it is on its page →
Of the 37 Vitamin D Deficiency studies recruiting now, 16 (43%) set no upper age limit and 18 (49%) stop at 75 or younger; 10 take children under 18; 11 take healthy volunteers.
This study: 18 Years to 39 Years · all sexes · healthy volunteers too.
The full table on the hub →This tab as a report to print or save as PDF → With an account.
154 studies; the count open now beside each. This study's row is marked.
A study in two phases is counted once above. Listed by phase, each with its combined phases: Phase 1 18 · Phase 2 16 · Phase 3 8 · Phase 4 27
First in 2001; this study’s year is marked. 9 started in 2015.
By drug class, each counting the studies that test any of its medicines:
This study's enrollment of 150 is above the median of 78 across 590 interventional studies indexed under Vitamin D Deficiency.
Median enrollment 75 across the 153 interventional studies. Of the 113 that completed or were terminated, 17 (15%) have results posted.
This tab as a report to print or save as PDF → With an account.
2 of 154 have an industry lead sponsor. The 10 most frequent:
Seoul National University Hospital is the lead sponsor of 1,900 studies on the registry; 274 are open to participants now.
Of its 12 completed or terminated interventional studies of FDA-regulated products, 2 (17%) have results posted.
Seoul National University Hospital has 2 studies filed under Vitamin D Deficiency — fewer than ten, so there is no comparison to draw.
None of the studies under way reaches primary completion within a year.
Among the 154 studies testing Vitamin D in Vitamin D Deficiency, from their registry updates:
This tab as a report to print or save as PDF → With an account.
This study aimed to compare the effects between sunlight exposure and oral vitamin D supplementation on serum 25-hydroxyvitamin D concentration and metabolic markers in Korean young adults.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Everyday sunlight exposure around noon for 20-30 minutes for 8 weeks
Behavioral: Sunlight Exposure
Supplementation of vitamin D3 500 IU/day for 8 weeks
Dietary Supplement: Vitamin D Supplementation
Intake of placebo for 8 weeks
Other: Placebo
* Everyday sunlight exposure around noon for 20-30 minutes for 8 weeks * Completing a Sun Diary after sunlight exposure
- Supplementation of vitamin D3 500 IU/day for 8 weeks
- Intake of placebo for 8 weeks
Serum 25(OH)D
Changes in serum 25(OH)D levels in ng/mL
Time frame: Baseline, 4 week, and 8 week
BMI
Weight and height will be combined to report BMI in kg/m\^2
Time frame: Baseline, 4 week, and 8 week
Systolic blood pressure
Systolic blood pressure changes in mmHg
Time frame: Baseline, 4 week, and 8 week
Diastolic blood pressure
Diastolic blood pressure changes in mmHg
Time frame: Baseline, 4 week, and 8 week
Lipid panel
Serum total cholesterol, triglycerides, HDL cholesterol, and LDL cholesterol in mg/dL
Time frame: Baseline and 8 week
Fasting glucose
Serum fasting glucose in mg/dL
Time frame: Baseline and 8 week
AST
Serum AST levels in mg/dL
Time frame: Baseline and 8 week
ALT
Serum ALT levels in mg/dL
Time frame: Baseline and 8 week
GGT
Serum AST, ALT, and GGT levels in mg/dL
Time frame: Baseline and 8 week
Intact PTH
Serum intact PTH levels in mg/dL
Time frame: Baseline and 8 week
Whole body BMD and BMC
Whole body BMD (g/cm\^2) and BMC (kg) measured by DEXA
Time frame: Baseline and 8 week
Lean body mass, fat mass, and percent fat
Lean body mass (kg), fat mass (kg), and percent fat (%) measured by DEXA
Time frame: Baseline and 8 week
Lean body mass, muscle mass, skeletal muscle mass, fat mass, and percent fat
Lean body mass (kg), muscle mass (kg), skeletal muscle mass (kg), fat mass (kg), and percent fat (%) measured by body impedance analysis
Time frame: Baseline, 4 week, and 8 week
EQ-5D-5L
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.
Time frame: Baseline, 4 week, and 8 week
No study locations are listed for this record.
Plan to share: No
Ran from Jun 2015 to primary completion in Nov 2015, 5 months.
Of 168 non-industry interventional studies with no phase under Vitamin D Deficiency, half reached primary completion within 11 months of starting (the median), counting those still running; a quarter within 4 and three quarters within 29. This study's 5 months is below that.
Counting every sponsor, half of 170 studies reached it within 11 months; a quarter within 4 and three quarters within 29.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Jun 2016. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Vitamin D
Seoul National University Hospital →