title: Perceived neighbourhood environmental attributes and prospective changes in TV viewing time among older Australian adults.
abstract: BACKGROUND
  There has been a growing interest in environmental initiatives to reduce sedentary behaviour. A few existing studies on this topic are mostly cross-sectional, focused on the general adult population, and examining neighbourhood walkability. This study examined associations of perceived environmental attributes with change in TV viewing time over seven years among older Australian adults in the Australian Diabetes, Obesity and Lifestyle (AusDiab) study.
  
  
  METHODS
  The AusDiab study is a population-based study on diabetes and its risk factors in adults. We used the data on 1072 older adults (60+ years at baseline) collected in 2004-05 (baseline) and in 2011-12 (follow-up; 45. 4% men, mean age 67.5 years). Generalized linear modelling examined associations with 7 years change in TV viewing time of nine perceived neighbourhood-environment attributes relating to local shops, alternative routes, footpaths, parks, attractiveness, natural features, bicycle/walkway tracks, local traffic, and safety.
  
  
  RESULTS
  On average, participants increased their TV viewing time from 127 min/day to 137 min/day over the 7 years period. Adjusted for baseline TV viewing levels, TV viewing time at follow-up was 8% lower (95%CI: 0.85, 0.99) among those who did not perceive local traffic as a deterrent compared to those who perceived traffic as a deterrent. A trend for significant interaction between working status and the presence of a parks nearby indicated that, for those who were not working, those who reported having parks nearby had a marginal association with lower TV viewing time at follow-up than those who did not (p = 0.048).
  
  
  CONCLUSIONS
  Overall TV viewing time increased on average by 10 minutes/day over 7 years among older Australian adults. Local traffic that makes walking difficult or unpleasant may increase older adults' leisure-time sedentary behaviours such as TV viewing, possibly by deterring outdoor activities.
authors.affiliation: Baker IDI Heart and Diabetes Institute, Level 4, 99 Commercial Rd, Melbourne, VIC, 3004, Australia. shibata@taiiku.tsukuba.ac.jp.|Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan. shibata@taiiku.tsukuba.ac.jp.
authors.forename: Ai
authors.initials: A
authors.lastname: Shibata
authors.affiliation: Baker IDI Heart and Diabetes Institute, Level 4, 99 Commercial Rd, Melbourne, VIC, 3004, Australia. koka@waseda.jp.|Faculty of Sport Sciences, Waseda University, 2-579-14 Mikajima, Tokorozawa, Saitama, 359-1192, Japan. koka@waseda.jp.
authors.forename: Koichiro
authors.initials: K
authors.lastname: Oka
authors.affiliation: Baker IDI Heart and Diabetes Institute, Level 4, 99 Commercial Rd, Melbourne, VIC, 3004, Australia. takemi.sugiyama@unisa.edu.au.|School of Design, Swinburne University of Technology, Melbourne, VIC, Australia. takemi.sugiyama@unisa.edu.au.|School of Population Health, University of South Australia, North Terrace, Adelaide, SA, 5000, Australia. takemi.sugiyama@unisa.edu.au.
authors.forename: Takemi
authors.initials: T
authors.lastname: Sugiyama
authors.affiliation: Sydney Medical School and Sydney School of Public Health, The University of Sydney, Sydney, NSW, 2006, Australia. melody.ding@sydney.edu.au.
authors.forename: Ding
authors.initials: D
authors.lastname: Ding
authors.affiliation: Centre for Physical Activity and Nutrition Research, Deakin University, 221 Burwood Highway, Burwood, VIC, 3125, Australia. jo.salmon@deakin.edu.au.
authors.forename: Jo
authors.initials: J
authors.lastname: Salmon
authors.affiliation: Baker IDI Heart and Diabetes Institute, Level 4, 99 Commercial Rd, Melbourne, VIC, 3004, Australia. David.Dunstan@bakeridi.edu.au.|School of Sports Science, Exercise and Health, the University of Western Australia, Crawley, WA, Australia. David.Dunstan@bakeridi.edu.au.|School of Population Health, the University of Queensland, Brisbane, QLD, Australia. David.Dunstan@bakeridi.edu.au.|School of Exercise and Nutrition Sciences, Deakin University, Burwood, VIC, Australia. David.Dunstan@bakeridi.edu.au.|School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia. David.Dunstan@bakeridi.edu.au.
authors.forename: David W
authors.initials: DW
authors.lastname: Dunstan
authors.affiliation: Baker IDI Heart and Diabetes Institute, Level 4, 99 Commercial Rd, Melbourne, VIC, 3004, Australia. Neville.Owen@bakeridi.edu.au.|School of Population Health, the University of Queensland, Brisbane, QLD, Australia. Neville.Owen@bakeridi.edu.au.|School of Population and Global Health, Melbourne University, Melbourne, VIC, Australia. Neville.Owen@bakeridi.edu.au.|Department of Medicine, Monash University, Clayton, VIC, Australia. Neville.Owen@bakeridi.edu.au.
authors.forename: Neville
authors.initials: N
authors.lastname: Owen
mesh_terms: D000368:Aged; D001290:Attitude; D001315:Australia; D003430:Cross-Sectional Studies; D004651:Employment; D004777:Environment; D004779:Environment Design; D005260:Female; D006801:Humans; D007899:Leisure Activities; D008297:Male; D008875:Middle Aged; D018986:Motor Vehicles; D009765:Obesity / Q000209:etiology; D000068316:Parks, Recreational; D010465:Perception; D011446:Prospective Studies; D012111:Residence Characteristics; D057185:Sedentary Behavior; D013690:Television; D016138:Walking; D014937:Work