TITLE

Changes in Sedentary Time and Physical Activity in Response to an Exercise Training and/or Lifestyle Intervention

AUTHOR(S)
Kozey-Keadle, Sarah; Staudenmayer, John; Libertine, Amanda; Mavilia, Marianna; Lyden, Kate; Braun, Barry; Freedson, Patty
PUB. DATE
September 2014
SOURCE
Journal of Physical Activity & Health;Sep2014, Vol. 11 Issue 7, p1324
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Individuals may compensate for exercise training by modifying nonexercise behavior (ie, increase sedentary time (ST) and decrease nonexercise physical activity [NEPA]). Purpose: To compare ST and NEPA during a 12-week exercise training and/or lifestyle intervention. Methods: Fifty-seven overweight/obese participants (19 M/39 F) completed the study (mean ± SD; age 43.6 ± 9.9 y, BMI 35.1 ± 4.6 kg/m²). There were no between-group differences in activity levels at baseline. Four-arm quasi-experimental intervention study 1) EX: exercise 5 days per week at a moderate intensity (40% to 65% VO2peak) 2) rST: reduce ST and increase NEPA, 3) EX-rST: combination of EX and rST and 4) CON: maintain habitual behavior. Results: For the EX group, ST did not decrease significantly (mean ((95% confidence interval) 0.48 (-2.2 to 3.1)% and there was no changes in NEPA at week-12 compared with baseline. The changes were variable, with approximately 50% of participants increasing ST and decreasing NEPA. The rST group decreased ST (-4.8 (0.8 to 7.9)% and increased NEPA. EX-rST significantly decreased ST (-5.1 (-2.2 to 7.9)% and increased time in NEPA at week-12 compared with baseline. The control group increased ST by 4.3 (0.8 to 7.9)%. Conclusions: Changes in nonexercise ST and NEPA are variable among participants in an exercise-training program, with nearly half decreasing NEPA compared with baseline. Interventions targeting multiple behaviors (ST and NEPA) may effectively reduce compensation and increase daily activity.
ACCESSION #
100359197

 

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics