Reducing Sedentary Behavior Versus Increasing Moderate-to-Vigorous Intensity Physical Activity in Older Adults: A 12-Week Randomized, Clinical Trial. (March 2017)

• Record Type: Journal Article
• Authors: Barone Gibbs, Bethany; Brach, Jennifer S.; Byard, Tom; Creasy, Seth; Davis, Kelliann K.; McCoy, Stephanie; Peluso, Anna; Rogers, Renee J.; Rupp, Kristie; Jakicic, John M.
• Is Part Of: Journal of aging and health. Volume 29:Number 2(2017:Mar.)
• Page Start: 247
• Page End: 267
• Publication Date: 2017-03
• Subjects: sedentary time -- physical activity -- physical function -- older adults; Older people -- Health and hygiene -- Periodicals; Geriatrics -- Periodicals; 618.97
• DOI: 10.1177/0898264316635564
• Languages: English
• ISSNs: 0898-2643

Abstract

Objective: To compare the effects of behavioral interventions targeting decreased sedentary behavior versus increased moderate-to-vigorous intensity physical activity (MVPA) in older adults.Method: Inactive older adults ( N = 38, 68 ± 7 years old, 71% female) were randomized to 12-week interventions targeting decreased sedentary behavior ( Sit Less ) or increased MVPA ( Get Active ). The SenseWear armband was used to objectively assess activity in real time. Assessments included a blinded armband, the Community Health Activites Model Program for Senior (CHAMPS) questionnaire, 400-meter walk, and the Short Physical Performance Battery (SPPB).Results: Objectively measured MVPA increased in Get Active (75 ± 22 min/week, p < .001); self-reported MVPA increased in both groups ( p < .05). Sedentary behavior did not change in either group (all p > .05). Only the Sit Less group improved the SPPB score (0.5 ± 0.3, p = .046).Discussion: Targeting reduced sedentary behavior had a greater effect on physical function among inactive but high functioning older adults over 12 weeks. Future studies of longer duration and combining increased MVPA with reduced sedentary behavior are needed.