Ann M Swartz1, Chi C Cho2, Whitney A Welch3, Michael E Widlansky4, Hotaka Maeda2, Scott J Strath5. 1. Department of Kinesiology, University of Wisconsin-Milwaukee, Milwaukee, WI, USA. aswartz@uwm.edu. 2. Center for Aging and Translational Research, University of Wisconsin-Milwaukee, Milwaukee, WI, USA. 3. Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA. 4. Department of Medicine, Division of Cardiology, Medical College of Wisconsin, Milwaukee, WI, USA. 5. Department of Kinesiology, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
Abstract
OBJECTIVES: We examined the pattern of change in sedentary behavior (SB) resulting from a physical activity (PA) intervention in older adults, and the influence of sex on changes in SB. METHODS:One hundred twenty (N = 120) inactive older adults from 2 12-week step/day-target interventions were included in this pooled reanalysis. Participants were randomly assigned to an intervention (STEP) or control group (CON). A Hip-worn accelerometer (Actigraph) was used to assess SB and PA. RESULTS: Significant decreases in SB (-25 minutes) were largely accounted for by the increase in moderate- to vigorous-intensity PA (MVPA; +17.3 minutes). More broadly, data showed that for every 1% increase in proportion of time spent in MVPA, SB decreased by 1.21%. Results of the pattern analysis showed significant pre-post decreases in the number of daily sedentary bouts lasting 10, 20, and 30 minutes and the number of sit-to-stand transitions in the STEP group. Males tended to decrease time spent in longer bouts and females tended to decrease the number of sit-to-stand transitions to achieve lower SB. CONCLUSIONS: Decreases in SB were accomplished through reductions in shorter bouts of SB and likely through a variety of small changes that differed between individual participants and sexes.
RCT Entities:
OBJECTIVES: We examined the pattern of change in sedentary behavior (SB) resulting from a physical activity (PA) intervention in older adults, and the influence of sex on changes in SB. METHODS: One hundred twenty (N = 120) inactive older adults from 2 12-week step/day-target interventions were included in this pooled reanalysis. Participants were randomly assigned to an intervention (STEP) or control group (CON). A Hip-worn accelerometer (Actigraph) was used to assess SB and PA. RESULTS: Significant decreases in SB (-25 minutes) were largely accounted for by the increase in moderate- to vigorous-intensity PA (MVPA; +17.3 minutes). More broadly, data showed that for every 1% increase in proportion of time spent in MVPA, SB decreased by 1.21%. Results of the pattern analysis showed significant pre-post decreases in the number of daily sedentary bouts lasting 10, 20, and 30 minutes and the number of sit-to-stand transitions in the STEP group. Males tended to decrease time spent in longer bouts and females tended to decrease the number of sit-to-stand transitions to achieve lower SB. CONCLUSIONS: Decreases in SB were accomplished through reductions in shorter bouts of SB and likely through a variety of small changes that differed between individual participants and sexes.
Authors: Charles E Matthews; Kong Y Chen; Patty S Freedson; Maciej S Buchowski; Bettina M Beech; Russell R Pate; Richard P Troiano Journal: Am J Epidemiol Date: 2008-02-25 Impact factor: 4.897
Authors: Carol Ewing Garber; Bryan Blissmer; Michael R Deschenes; Barry A Franklin; Michael J Lamonte; I-Min Lee; David C Nieman; David P Swain Journal: Med Sci Sports Exerc Date: 2011-07 Impact factor: 5.411
Authors: Anne Martin; Claire Fitzsimons; Ruth Jepson; David H Saunders; Hidde P van der Ploeg; Pedro J Teixeira; Cindy M Gray; Nanette Mutrie Journal: Br J Sports Med Date: 2015-04-23 Impact factor: 13.800
Authors: John Bellettiere; Jordan A Carlson; Dori Rosenberg; Anant Singhania; Loki Natarajan; Vincent Berardi; Andrea Z LaCroix; Dorothy D Sears; Kevin Moran; Katie Crist; Jacqueline Kerr Journal: PLoS One Date: 2015-08-21 Impact factor: 3.240
Authors: Leandro Fornias Machado de Rezende; Juan Pablo Rey-López; Victor Keihan Rodrigues Matsudo; Olinda do Carmo Luiz Journal: BMC Public Health Date: 2014-04-09 Impact factor: 3.295
Authors: Nanette Mutrie; Orla Doolin; Claire F Fitzsimons; P Margaret Grant; Malcolm Granat; Madeleine Grealy; Hazel Macdonald; Freya MacMillan; Alex McConnachie; David A Rowe; Rebecca Shaw; Dawn A Skelton Journal: Fam Pract Date: 2012-07-28 Impact factor: 2.267
Authors: Linda Burke; Andy H Lee; Jonine Jancey; Liming Xiang; Deborah A Kerr; Peter A Howat; Andrew P Hills; Annie S Anderson Journal: Int J Behav Nutr Phys Act Date: 2013-01-31 Impact factor: 6.457