Two-Arm Randomized Pilot Intervention Trial to Decrease Sitting Time and Increase Sit-To-Stand Transitions in Working and Non-Working Older Adults

Jacqueline Kerr, Michelle Takemoto, Khalisa Bolling, Andrew Atkin, Jordan Carlson, Dori Rosenberg, Katie Crist, Suneeta Godbole, Brittany Lewars, Claudia Pena, Gina Merchant, Jacqueline Kerr, Michelle Takemoto, Khalisa Bolling, Andrew Atkin, Jordan Carlson, Dori Rosenberg, Katie Crist, Suneeta Godbole, Brittany Lewars, Claudia Pena, Gina Merchant

Abstract

Background: Excessive sitting has been linked to poor health. It is unknown whether reducing total sitting time or increasing brief sit-to-stand transitions is more beneficial. We conducted a randomized pilot study to assess whether it is feasible for working and non-working older adults to reduce these two different behavioral targets.

Methods: Thirty adults (15 workers and 15 non-workers) age 50-70 years were randomized to one of two conditions (a 2-hour reduction in daily sitting or accumulating 30 additional brief sit-to-stand transitions per day). Sitting time, standing time, sit-to-stand transitions and stepping were assessed by a thigh worn inclinometer (activPAL). Participants were assessed for 7 days at baseline and followed while the intervention was delivered (2 weeks). Mixed effects regression analyses adjusted for days within participants, device wear time, and employment status. Time by condition interactions were investigated.

Results: Recruitment, assessments, and intervention delivery were feasible. The 'reduce sitting' group reduced their sitting by two hours, the 'increase sit-to-stand' group had no change in sitting time (p < .001). The sit-to-stand transition group increased their sit-to-stand transitions, the sitting group did not (p < .001).

Conclusions: This study was the first to demonstrate the feasibility and preliminary efficacy of specific sedentary behavioral goals.

Trial registration: clinicaltrials.gov NCT02544867.

Conflict of interest statement

Competing Interests: The authors have declared that no competing interests exist.

Figures

Fig 1. Flow diagram of progress through…
Fig 1. Flow diagram of progress through randomized pilot study.
Fig 2. Changes in daily sitting, standing,…
Fig 2. Changes in daily sitting, standing, sit-to-stand transitions and stepping over time by condition.

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