Faculty Collaboration Database

Pattern Analysis of Sedentary Behavior Change after a Walking Intervention. Am J Health Behav 2018 May 01;42(3):90-101

Date

04/18/2018

Pubmed ID

29663984

Pubmed Central ID

PMC6123016

DOI

10.5993/AJHB.42.3.9

Scopus ID

2-s2.0-85045385191 (requires institutional sign-in at Scopus site)   7 Citations

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.

Author List

Swartz AM, Cho CC, Welch WA, Widlansky ME, Maeda H, Strath SJ

Authors

Whitney A. Morelli PhD Assistant Professor in the Physical Medicine and Rehabilitation department at Medical College of Wisconsin
Michael E. Widlansky MD Associate Director, Professor in the Medicine department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Accelerometry
Actigraphy
Aged
Aged, 80 and over
Female
Humans
Male
Middle Aged
Physical Therapy Modalities
Sex Factors
Time Factors
Walking