Vitamin D status of Australian wome

Not Applicable

Recruiting

• Conditions: Public Health - Epidemiology; vitamin D deficiency; metabolic; Diet and Nutrition - Other diet and nutrition disorders; Metabolic and Endocrine - Other endocrine disorders; Musculoskeletal - Other muscular and skeletal disorders

• Registration Number: ACTRN12620001140943
• Lead Sponsor: niversity of Wollongong

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2020-11-02
• Last Update Posted: 9 November 2020

Recruitment & Eligibility

• Status: Recruiting
• Sex: Female
• Target Recruitment: 100

Inclusion Criteria

•Women
•Australian
-Self-reported ethnicity
•Living in Australia for >2 months
•Aged 18-35 or >55 years
•No significant health issues
•Pre-menopausal (regular menstrual periods) or Post-menopausal (menstrual periods stopped for longer than 12 consecutive months)

Exclusion Criteria

•Women in perimenopause or menopause
•Pregnant or planning pregnancy during study period
•Hypercalcaemia (>2.5mmol/L) – assessed and excluded at baseline
•Currently receiving treatment for medical conditions that are likely to affect vitamin D metabolism (osteoporosis, hormone replacement therapy, anti-estrogens treatment, antiepileptic drugs and breast cancer treatment)
•Regular use of sun beds
•Having a sun holiday one month prior to participation in study
•Women who take vitamin D or calcium supplements (or multivitamin supplements that contain these vitamins)
•Living in Australia for less than 2 months

Study & Design

• Study Type: Observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Vitamin D status as assessed by serum 25(OH)D, measured by Liquid Chromatography with tandem mass spectrometry (LC-MS-MS)[One measurement on the day of visit (Approximately 2 hour session)];Vitamin D status as measured by dietary intake, measured by a 4-day food diary, analysed using Foodworks[One measurement analysed after the 4 day food diary is completed (one of which days is a weekend day)];Composite: Musculoskeletal health (bone mineral composition, bone density and body composition ((body fat percentage)), measured using dual energy x-ray absorptiometry[One measurement on the day of the 2 hour visit session ]