Please note that the copy function is not enabled for this field.
If you wish to
modify
existing outcomes, please copy and paste the current outcome text into the Update field.
LOGIN
CREATE ACCOUNT
LOGIN
CREATE ACCOUNT
MY TRIALS
REGISTER TRIAL
FAQs
HINTS AND TIPS
DEFINITIONS
Trial Review
The ANZCTR website will be unavailable from 1pm until 3pm (AEDT) on Wednesday the 30th of October for website maintenance. Please be sure to log out of the system in order to avoid any loss of data.
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been endorsed by the ANZCTR. Before participating in a study, talk to your health care provider and refer to this
information for consumers
Download to PDF
Trial registered on ANZCTR
Registration number
ACTRN12612000159853
Ethics application status
Approved
Date submitted
20/12/2011
Date registered
3/02/2012
Date last updated
3/02/2012
Type of registration
Retrospectively registered
Titles & IDs
Public title
Seasonal Variation in Postural Balance in Community Dwelling Older Adults in Tasmania
Query!
Scientific title
Older adults (over 60 yrs.) longitudinal observational study over time with no intervention measuring physical fall risks and other determinants of balance that may vary seasonally
Query!
Secondary ID [1]
279634
0
nil
Query!
Universal Trial Number (UTN)
U1111-1126-5665
Query!
Trial acronym
Query!
Linked study record
Query!
Health condition
Health condition(s) or problem(s) studied:
Fall risk
285434
0
Query!
Condition category
Condition code
Musculoskeletal
285615
285615
0
0
Query!
Normal musculoskeletal and cartilage development and function
Query!
Intervention/exposure
Study type
Observational
Query!
Patient registry
Query!
Target follow-up duration
Query!
Target follow-up type
Query!
Description of intervention(s) / exposure
Time over a one year period to determine effect of season on physical fall risk factors. Data collected from recruited community dwelling older older adults beween the end of spring 2009 and summer 2010, with participants attending for 5 data collection time points over the study period at approximately 3 monthly intervals (including retest of original season).
Query!
Intervention code [1]
283914
0
Not applicable
Query!
Comparator / control treatment
Compare baseline and data at the end of each season
Query!
Control group
Uncontrolled
Query!
Outcomes
Primary outcome [1]
286177
0
Postural Balance using a force platform (measuring medio-lateral sway range) and dynamic balance using the clinical four square step test
Query!
Assessment method [1]
286177
0
Query!
Timepoint [1]
286177
0
Baseline, 3 months, 6 months, 9 months, 12 months
Query!
Secondary outcome [1]
295311
0
Serum Vitamin D concentrations
Query!
Assessment method [1]
295311
0
Query!
Timepoint [1]
295311
0
Baseline, 3 months, 6 months, 9 months, 12 months, 24 months
Query!
Eligibility
Key inclusion criteria
Community dwelling adults over 60 years of age able to ambulate independently
Query!
Minimum age
60
Years
Query!
Query!
Maximum age
85
Years
Query!
Query!
Sex
Both males and females
Query!
Can healthy volunteers participate?
Yes
Query!
Key exclusion criteria
Diagnosed kidney and liver disease, vitmain D supplementation over 800iu/day
Query!
Study design
Purpose
Screening
Query!
Duration
Longitudinal
Query!
Selection
Convenience sample
Query!
Timing
Prospective
Query!
Statistical methods / analysis
Query!
Recruitment
Recruitment status
Completed
Query!
Date of first participant enrolment
Anticipated
20/08/2009
Query!
Actual
Query!
Date of last participant enrolment
Anticipated
Query!
Actual
Query!
Date of last data collection
Anticipated
Query!
Actual
Query!
Sample size
Target
81
Query!
Accrual to date
Query!
Final
Query!
Recruitment in Australia
Recruitment state(s)
Query!
Funding & Sponsors
Funding source category [1]
284412
0
Charities/Societies/Foundations
Query!
Name [1]
284412
0
Clifford Craig Medical Research Trust
Query!
Address [1]
284412
0
C/- Launceston General Hospital
Charles St
Launceston, 7250, TAS
Query!
Country [1]
284412
0
Australia
Query!
Funding source category [2]
284413
0
Charities/Societies/Foundations
Query!
Name [2]
284413
0
The Physiotherapy Research Fund
Query!
Address [2]
284413
0
Suite 2, 1175 Toorak Rd Camberwell, 3124, VIC
Query!
Country [2]
284413
0
Australia
Query!
Funding source category [3]
284414
0
University
Query!
Name [3]
284414
0
The University of Tasmania
Query!
Address [3]
284414
0
Research Office
Private Bag 1
Hobart, 7001, TAS
Query!
Country [3]
284414
0
Australia
Query!
Primary sponsor type
University
Query!
Name
The University of Tasmania
Query!
Address
The School of Human Life Sciences
Locked Bag 1320
Launceston, 7250. TAS
Query!
Country
Australia
Query!
Secondary sponsor category [1]
283341
0
None
Query!
Name [1]
283341
0
Query!
Address [1]
283341
0
Query!
Country [1]
283341
0
Query!
Ethics approval
Ethics application status
Approved
Query!
Ethics committee name [1]
286366
0
Human Research Ethics Committee (Tasmania) Network
Query!
Ethics committee address [1]
286366
0
Office of Research Services University of Tasmania Private Bag 1 Hobart TAS 7001
Query!
Ethics committee country [1]
286366
0
Australia
Query!
Date submitted for ethics approval [1]
286366
0
02/04/2009
Query!
Approval date [1]
286366
0
05/06/2009
Query!
Ethics approval number [1]
286366
0
(H0010561).
Query!
Summary
Brief summary
Balance impairment is an important fall risk factor and increases in range in postural sway in the medio-lateral direction in older adults are associated with increased fall risk and rates. Multivariate analysis reveals serum vitamin D levels as an independent variable associated with postural sway. In individuals with suboptimal levels of vitamin D, postural sway improves after supplementation, independently of changes to fall rate or number of people falling. Both epidemiological and longitudinal studies have shown that vitamin D levels show seasonal variation. Lowest levels of serum vitamin D are recorded towards the end of winter, approximately four weeks after the shortest day of the year. Fall rates have been shown to decrease post supplementation with vitamin D in older adults with insufficient levels (between 22 and 49nmol/L) (RaR 0.72, 95% CI 0.55 to 0.95). As vitamin D varies seasonally, and is related to postural sway, this study investigates whether postural sway varies seasonally and is related to seasonal changes in vitamin D or fall rate.
Query!
Trial website
Query!
Trial related presentations / publications
Bird, ML and Hill, K and Robertson, I and Ball, MJ and Williams, AD, ‘Vitamin D status, ankle strength and activity show seasonal variation in older adults: relevance for winter falls in higher latitudes’ Age and Ageing (under review) Conference Presentations Bird, ML, Hill, KD, Robertson, IK, Ball, MJ, Pittaway, J & Williams, AD, Are seasonal variations in vitamin D and fall rate associated with changes in balance? Australian Physiotherapy Association Conference, 29 October to 1st November, Brisbane, Australia (2011) Bird, ML, Hill, KD, Robertson, IK, Ball, MJ, Pittaway, J & Williams, AD Seasonal variation in vitamin D, activity and strength. 9th Asia/Oceania Regional Congress of Gerontology and Geriatrics 23-27th October, Melbourne, Australia (2011)
Query!
Public notes
Query!
Contacts
Principal investigator
Name
33556
0
Query!
Address
33556
0
Query!
Country
33556
0
Query!
Phone
33556
0
Query!
Fax
33556
0
Query!
Email
33556
0
Query!
Contact person for public queries
Name
16803
0
Marie-Louise Bird
Query!
Address
16803
0
The School of Human Life Sciences
The University of Tasmania
Locked Bag 1320
Launceston, TAS 7250
Query!
Country
16803
0
Australia
Query!
Phone
16803
0
+61 3 63243123
Query!
Fax
16803
0
+61 3 63243995
Query!
Email
16803
0
[email protected]
Query!
Contact person for scientific queries
Name
7731
0
Marie-Louise Bird
Query!
Address
7731
0
The School of Human Life Sciences
The University of Tasmania
Locked Bag 1320
Launceston, TAS 7250
Query!
Country
7731
0
Australia
Query!
Phone
7731
0
+61 3 63243123
Query!
Fax
7731
0
+61 3 63243995
Query!
Email
7731
0
[email protected]
Query!
No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
Download to PDF