title: The Feasibility of Reducing Sitting Time in Overweight and Obese Older Adults.
abstract: BACKGROUND
  Overweight and obese older adults have high sedentary time. We tested the feasibility and preliminary effects of a sedentary time reduction intervention among adults over age 60 with a body mass index over 27 kg/m2 using a nonrandomized one-arm design.
  
  
  METHODS
  Participants (N = 25, mean age = 71.4, mean body mass index = 34) completed an 8-week theory-based intervention targeting reduced total sitting time and increased sit-to-stand transitions. An inclinometer (activPAL) measured the primary outcomes, change in total sitting time and sit-to-stand transitions. Secondary outcomes included physical activity (ActiGraph GT3X+ accelerometer), self-reported sedentary behaviors, physical function (Short Physical Performance Battery), depressive symptoms (8-item Patient Health Questionnaire), quality of life (PROMIS), and study satisfaction. Paired t tests examined pre-post test changes in sitting time, sit-to-stand transitions, and secondary outcomes.
  
  
  RESULTS
  Inclinometer measured sitting time decreased by 27 min/day (p < .05) and sit-to-stand transitions increased by 2 per day (p > .05), while standing time increased by 25 min/day (p < .05). Accelerometer measured sedentary time, light-intensity, and moderate-to-vigorous physical activity improved (all p values ≤ .05). Self-reported sitting time, gait speed, and depressive symptoms also improved (all p values < .05). Effect sizes were small. Study satisfaction was high.
  
  
  CONCLUSIONS
  Reducing sitting time is feasible, and the intervention shows preliminary evidence of effectiveness among older adults with overweight and obesity. Randomized trials of sedentary behavior reduction in overweight and obese older adults, most of whom have multiple chronic conditions, may be promising.
authors: Group Health Research Institute, Seattle, WA, USA rosenberg.d@ghc.org.
authors: Dori E
authors: DE
authors: Rosenberg
authors: Group Health Research Institute, Seattle, WA, USA.
authors: Nancy M
authors: NM
authors: Gell
authors: Group Health Research Institute, Seattle, WA, USA.
authors: Salene M W
authors: SM
authors: Jones
authors: Group Health Research Institute, Seattle, WA, USA.
authors: Anne
authors: A
authors: Renz
authors: University of California San Diego, La Jolla, CA, USA.
authors: Jacqueline
authors: J
authors: Kerr
authors: University of Queensland, Brisbane, Queensland, Australia.
authors: Paul A
authors: PA
authors: Gardiner
authors: Group Health Research Institute, Seattle, WA, USA.
authors: David
authors: D
authors: Arterburn
mesh_terms: D061725:Accelerometry / Q000295:instrumentation; D000368:Aged; D000369:Aged, 80 and over; D015992:Body Mass Index; D015444:Exercise / Q000502:physiology / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000503:physiopathology / Q000628:therapy; D057185:Sedentary Behavior
keywords: aging; intervention; physical activity