Creasy, Seth
(2016)
Comparison of Supervised and Unsupervised Physical Activity Programs during a Standard Behavioral Weight Loss Intervention for Adults who are Overweight or Obese.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
Abstract
Both supervised and unsupervised physical activity programs have successfully increased physical activity and reduced body weight when combined with a standard behavioral weight management program. However, it remains unclear if supervised and unsupervised physical activity programs with similar activity prescriptions change physical activity behavior and physiological responses comparably. Purpose: The primary aim of this study was to examine changes in moderate-to-vigorous physical activity (MVPA) in response to a supervised physical activity program prescribed in minutes/week (SUP-PA), an unsupervised physical activity program prescribed in minutes/week (UNSUP-PA), and an unsupervised physical activity program prescribed in steps/day (STEP) during a standard behavioral weight loss intervention. Methods: Fifty-two overweight and obese adults (age: 43.5 ± 10.1 years, BMI: 31.5 ± 3.5 kg/m2) were randomized to STEP (n=18), UNSUP-PA (n=17), and SUP-PA (n=17). Subjects were prescribed a calorie-restricted diet (1200-1800 kcals/day) and increased physical activity (150 min/week or 10,000 steps/day with 2,500 brisk steps/day). All three groups attended weekly in-person group intervention sessions for 12 weeks. Results: All three groups significantly increased MVPA in bouts of ≥10 minutes over the 12-week intervention (STEP: 11.5 ± 31.2 min/day, UNSUP-PA: 16.1 ± 25.8 min/day, and SUP-PA: 21.6 ± 24.9 min/day, p<0.001) with no differences between groups (p=0.94) or group by time interaction (p=0.81). In addition, there were no significant differences in weight loss between the groups (p=0.81). Conclusions: This study provides evidence that unsupervised physical activity prescribed in minutes/week and an unsupervised physical activity program prescribed in steps/day can increase physical activity equally compared to a supervised physical activity program during a standard behavioral weight loss program eliciting similar physiological responses in adults who are overweight or obese.
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Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
|
| ETD Committee: |
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| Date: |
5 August 2016 |
| Date Type: |
Publication |
| Defense Date: |
27 July 2016 |
| Approval Date: |
5 August 2016 |
| Submission Date: |
28 July 2016 |
| Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
| Number of Pages: |
157 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
School of Education > Health and Physical Activity |
| Degree: |
PhD - Doctor of Philosophy |
| Thesis Type: |
Doctoral Dissertation |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
Physical activity, obesity, exercise |
| Date Deposited: |
05 Aug 2016 13:42 |
| Last Modified: |
15 Nov 2016 14:35 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/29029 |
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