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Freedom study (Falls Risk Epidemiology:Effect of Vitamin D on skeletal Outcomes and other Measures)

A randomised controlled trial on the effect of sunlight and calcium to reduce vitamin D deficiency in older people in residential care

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12607000089437
Enrollment
600
Registered
2007-01-25
Start date
2006-07-30
Completion date
Unknown
Last updated
2026-02-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

The proposed study will determine the effect of a public health strategy (ie. increased sun light exposure and increased calcium intake) to reduce falls in older people in residential care using a randomised trial. The primary hypothesis of the trial is that increased appropriate sun light exposure will reduce falls, improve 25 hydroxy vitamin D (25OHD) levels and lower parathyroid hormone (PTH) levels. Secondary hypotheses are that the intervention will reduce accelerated bone turnover, reduce fractures, improve motor function and improve mood.

Interventions

Subjects will be asked to undergo exposure of approximately 15% of their body (i.e. the face, hands and arms) usually between 9.30am – 10am daily during the year, 5 days per week. During mid summer, these sessions will run between 8.30am – 9am. It is recognized that it may be practically difficult to achieve this exposure during the months of June – August and exposure during these winter months may be less effective, but it considered important the study should run continuously through the ye

Subjects will be asked to undergo exposure of approximately 15% of their body (i.e. the face, hands and arms) usually between 9.30am – 10am daily during the year, 5 days per week. During mid summer, these sessions will run between 8.30am – 9am. It is recognized that it may be practically difficult to achieve this exposure during the months of June – August and exposure during these winter months may be less effective, but it considered important the study should run continuously through the year for adherence purposes. Adherence will be enhanced via the appointment of ‘Sunlight Assistants’ in each intervention institution, who will be normally employed in that institution for other duties but reimbursed for 1.5 hours per day for their duties in the study. Calcium supplements (Caltrate, 600mg elemental calcium, orally, morning) will be administered to the group, daily. Individual and doctors consent are obtained from each resident. The hostels pharmacy distributes the calcium tablets in individual Webster packs. All participants will receive the medical care usually provided by other health professionals.

Sponsors

University of Sydney/ Northern Clinical School
Lead SponsorUniversity

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Prevention
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
70 Years to No maximum
Healthy volunteers
No

Inclusion criteria

ambulant, likely to survive for more than 12 months, as assessed by the Implicit Review Tool employed in the FREE study

Exclusion criteria

Taking vitamin D or calcium supplements in the last 6 months, History of skin cancer in last three years

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026