title: Two-Arm Randomized Pilot Intervention Trial to Decrease Sitting Time and Increase Sit-To-Stand Transitions in Working and Non-Working Older Adults.
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.
  
  
  BACKGROUND
  clinicaltrials.gov NCT02544867.
authors.affiliation: Department of Family Medicine and Public Health, University of California, San Diego, California, United States of America.
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Kerr
authors.affiliation: Department of Family Medicine and Public Health, University of California, San Diego, California, United States of America.
authors.forename: Michelle
authors.initials: M
authors.lastname: Takemoto
authors.affiliation: Department of Family Medicine and Public Health, University of California, San Diego, California, United States of America.
authors.forename: Khalisa
authors.initials: K
authors.lastname: Bolling
authors.affiliation: UKCRC Centre for Diet and Activity Research (CEDAR), University of Cambridge School of Clinical Medicine, CB2 0QQ, United Kingdom.
authors.forename: Andrew
authors.initials: A
authors.lastname: Atkin
authors.affiliation: Children's Mercy Hospital, Kansas City, Missouri, United States of America.
authors.forename: Jordan
authors.initials: J
authors.lastname: Carlson
authors.affiliation: Group Health Research Institute, Seattle, Washington, United States of America.
authors.forename: Dori
authors.initials: D
authors.lastname: Rosenberg
authors.affiliation: Department of Family Medicine and Public Health, University of California, San Diego, California, United States of America.
authors.forename: Katie
authors.initials: K
authors.lastname: Crist
authors.affiliation: Department of Family Medicine and Public Health, University of California, San Diego, California, United States of America.
authors.forename: Suneeta
authors.initials: S
authors.lastname: Godbole
authors.affiliation: Department of Family Medicine and Public Health, University of California, San Diego, California, United States of America.
authors.forename: Brittany
authors.initials: B
authors.lastname: Lewars
authors.affiliation: Department of Family Medicine and Public Health, University of California, San Diego, California, United States of America.
authors.forename: Claudia
authors.initials: C
authors.lastname: Pena
authors.affiliation: Department of Family Medicine and Public Health, University of California, San Diego, California, United States of America.
authors.forename: Gina
authors.initials: G
authors.lastname: Merchant
mesh_terms: D061725:Accelerometry; D000368:Aged; D005260:Female; D015438:Health Behavior; D006266:Health Education; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology*; D010865:Pilot Projects; D012044:Regression Analysis; D057185:Sedentary Behavior; D017132:Workplace