THE ASSOCIATION BETWEEN OBJECTIVE MEASURES OF INTERMITTENT SEDENTARY BREAKS WITH RECURRENT FALL RISK IN OLDER MEN

Abstract

Abstract BACKGROUND We assessed the relationship between objectively measured sedentary bout frequency with recurrent falls (2+ falls/year). METHODS The sample included 2,918 men aged 79.0±5.1 years attending the Osteoporotic Fractures in Men Study (MrOS) Year 7 (2007-2009) visit. Sedentary bout frequencies were defined as the average daily number of transitions out of 5+ minutes sedentary (<1.5 METS). Falls were self-reported from mailed questionnaires. Generalized Estimating Equations estimated the odds of recurrent falls. RESULTS Over four follow-up years, 1,025 (35.1%) men had recurrent falls. Compared to men with <13.6 transitions from sedentary (Quartile (Q)1), the odds of recurrent falls among men with 13.6-<17.0 transitions (Q2), 17.0-<20.4 transitions (Q3), and 20.4-<34.6 transitions (Q4) were 0.82 (95%CI: 0.66-1.01), 0.79 (95%CI: 0.64, 0.99), and 1.01 (95%CI: 0.81, 1.27), respectively, after adjustment. CONCLUSIONS A U-shaped association may exist between sedentary bout frequency and recurrent falls risk. The least and most active men are at higher risk.