Published Papers - Abstract 378

Tudor-Locke C, Burton NW & Brown WJ. Leisure-time physical activity and occupational sitting: Associations with steps/day and BMI in 54–59 year old Australian women. Preventive Medicine, 2009; 48: 64-68

Objective: To assess whether combinations of leisure-time physical activity (PA) and occupational sitting were associated with steps/day and objectively measured body mass index (BMI) in women aged 54–59 years.Methods: In 2005, 158 women (age=56.4±1.4) living in Brisbane, Australia, were measured for height and weight, wore a pedometer for 7 days, and reported frequency and duration of leisure-time PA and extent of occupational sitting. Four groups were formed: (1) sufficiently active and some/little/no occupational sitting (n=52); (2) sufficiently active and mostly/all occupational sitting (n=29);(3) insufficiently active and some/little/no occupational sitting (n=43); and (4) insufficiently active and mostly/all occupational sitting (n=34). Analysis of variance (ANOVA) was used to examine group differences in mean steps/day and BMI.Results: Mean±standard deviation (SD) steps/day for each group (indicated by numerical order above)was: (1) 9997±2854; (2) 9424±3120; (3) 8995±2965; (4) 7276±2816 [F(3,154)=6.139, p=.001]. BMI (kg/m2) was: (1) 25.5±3.9); (2) 26.9±4.1; (3) 26.5±4.7; (4) 29.7±7.9 [F(3,154)=4.57, p=.004].Mean steps/daywere significantlylower, and BMI significantly higher, in group 4 than in all other groups. No other differences were significant.Conclusions: These cross-sectional data suggest that it might be important to consider both leisure-time PA and occupational sitting when considering strategies to increase steps/day and promote healthy BMI in midage women.