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The effect of 2 walking programs on aerobic fitness, body composition, and physical activity in sedentary office employees

Published on Jan 29, 2019in PLOS ONE2.776
· DOI :10.1371/journal.pone.0210447
Mynor Rodriguez-Hernandez2
Estimated H-index: 2
(UM: University of Michigan),
Danielle W. Wadsworth1
Estimated H-index: 1
(UM: University of Michigan)
Abstract
Purpose The present study examined changes in body composition, maximum oxygen uptake, and physical activity in sedentary office employees prescribed with two different walking programs during a 10-week intervention. Methods 68 sedentary employees were randomly assigned to one of three groups: multiple bouts of walking (n = 24 (5 male, 19 female) Age = 46±9, BMI = 30.5±5.78 kg/m2), continuous walking (n = 22 (6 male, 16 female) Age = 48±9, BMI = 30.6±6.2 kg/m2) and the control group (n = 22 (5 male, 17 female) Age = 42±10, BMI = 27.5±5.23 kg/m2). Dual-energy X-ray absorptiometry (iDXA) assessed body composition and a Bruce protocol treadmill test assessed aerobic fitness at baseline and week 11. At baseline, week 6 and week 11 a waist worn accelerometer measured physical activity and sedentary behavior. Physical activity was measured throughout the program with a wrist worn accelerometer. Results The results from the mixed-design ANOVA show that fat mass (p 0.05) for all three groups. Moderate intensity physical activity increased significantly from pre-test to week 6 (p 0.05) for all groups. No changes in VO2 were observed (p>0.05) for all groups. Conclusions Continuous or intermittent walking activity produce similar benefits on body weight, fat mass and body fat percentage in sedentary employees. Meanwhile, intermittent walking allowed these sedentary employees to increase lean mass and fat free mass. Intermittent walking could provide at least similar benefits on body composition compared to a continuous walking program.
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