12-year television viewing time trajectories and physical function in older adults

Reid, Natasha, Healy, Genevieve N. , Daly, Robin M. , Baker, Peter, Eakin, Elizabeth G. , Dunstan, David W. , Owen, Neville and Gardiner, Paul A. (2017) 12-year television viewing time trajectories and physical function in older adults. Medicine and Science in Sports and Exercise, 49 7: 1359-1365. doi:10.1249/MSS.0000000000001243


Author Reid, Natasha
Healy, Genevieve N.
Daly, Robin M.
Baker, Peter
Eakin, Elizabeth G.
Dunstan, David W.
Owen, Neville
Gardiner, Paul A.
Title 12-year television viewing time trajectories and physical function in older adults
Journal name Medicine and Science in Sports and Exercise   Check publisher's open access policy
ISSN 1530-0315
0195-9131
Publication date 2017-07-01
Sub-type Article (original research)
DOI 10.1249/MSS.0000000000001243
Open Access Status Not yet assessed
Volume 49
Issue 7
Start page 1359
End page 1365
Total pages 7
Place of publication Philadelphia, PA, United States
Publisher Lippincott Williams & Wilkins
Collection year 2018
Language eng
Formatted abstract
Introduction:The purpose of this study was to identify trajectories of older adults’ television viewing (TV) time over 12 years; and, to examine their associations with performance-based measures of physical function.

Methods: Data on TV time (hours/week-1) and socio-demographic factors were collected at each assessment of the Australian Diabetes, Obesity and Lifestyle (AusDiab) Study (1999/2000; 2004/2005; 2011/2012), with objective measures of physical function (2.44m timed-up-and-go [TUG, seconds] and knee extensor test [KES, kg]) collected at the final (2011/2012) assessment. Regression analyses examined predictors of trajectory membership and associations with TUG and KES in those aged 60+ years in 2011/2012.

Results: Six TV time trajectories were identified among the 1938 participants (aged 60-97, 54% female): consistently-low (9.7%); low-increasing (22.3%); moderate-decreasing (13.5%); moderate-increasing (30.3%); consistently-high (18.9%); and, high-increasing (5.2%). There were no statistically significant relationships with TUG (P>0.05). In the fully adjusted model, KES performance was significantly better in the consistently-low, low-increasing and consistently- high trajectories, compared to the moderate-increasing trajectory (P < 0.001, R2 = 0.33).

Conclusion: 12-year trajectories of TV time were associated with muscle strength in older adults. These findings suggest that patterns of sedentary behavior can be a determinant of muscle strength in later life.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Mater Research Institute-UQ (MRI-UQ)
HERDC Pre-Audit
School of Public Health Publications
 
Versions
Version Filter Type
Citation counts: Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Tue, 14 Mar 2017, 00:24:17 EST by System User on behalf of Learning and Research Services (UQ Library)