Objective Assessment of Time Spent Being Sedentary in Bariatric Surgery Candidates

Bond, Dale S.; Unick, Jessica L.; Jakicic, John M.; Vithiananthan, Sivamainthan; Pohl, Dieter; Roye, G. Dean; Ryder, Beth A.; Sax, Harry C.; Giovanni, Jeannine; Wing, Rena R.
June 2011
Obesity Surgery;Jun2011, Vol. 21 Issue 6, p811
Academic Journal
Background: Bariatric surgery candidates spend very little time in moderate-to-vigorous intensity physical activity (≥3 metabolic equivalents [METs]). This study examined (1) how much of their remaining time is spent in sedentary behaviors (SB < 1.5 METs) compared to light-intensity activities (1.5-2.9 METs) and (2) whether sedentary time varies by BMI. Methods: Daily time (hours, %) spent in SB was examined in 42 surgery candidates (BMI = 49.5 ± 7.9 kg/m) using the SenseWear Pro Armband. Participants were stratified by BMI to assess the relationship between degree of obesity and SB. Results: Participants wore the armband for 5.4 ± 0.7 days and 13.3 ± 1.7 h/day. On average, 81.4% (10.9 ± 2.1 h/day) of this time was spent in SB. Participants with BMI ≥ 50 spent nearly an hour more per day in SB than those with BMI 35-49.9 ( p = 0.01). Conclusions: Bariatric surgery candidates spend over 80% of their time in SB. Reducing SB may help to increase physical activity in these patients.


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