Document Type

Article

Publication Date

1-1-2016

Identifier

PMCID: PMC4703201 DOI: 10.1371/journal.pone.0145427

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.

Journal Title

PLoS One

Volume

11

Issue

1

First Page

0145427

Last Page

0145427

MeSH Keywords

Accelerometry; Aged; Female; Health Behavior; Health Education; Humans; Interviews as Topic; Male; Middle Aged; Motor Activity; Pilot Projects; Regression Analysis; Sedentary Lifestyle; Workplace

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