Josbeno, Deborah
(2009)
THE RELATIONSHIP BETWEEN PHYSICAL ACTIVITY, PHYSICAL FUNCTION AND PSYCHOSOCIAL VARIABLES IN INDIVIDUALS POST-BARIATRIC SURGERY.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
Abstract
The incidence of morbid obesity (BMI ≥ 40 kg•mˉ²) is increasing at an exponential rate. Currently, the most viable option for weight loss is bariatric surgery. Success following surgical procedure is guided by the individual's ability to make behavioral changes. A better understanding of the physical activity behavior of individuals who undergo bariatric surgery will enable the development of effective post-surgical exercise guidelines and interventions to enhance surgical weight loss outcomes. PURPOSE: To define the physical activity profile of subjects 2-5 years post bariatric surgery by examining the relationship between physical activity and weight loss. Additionally, this study examines the association between physical function, psychosocial correlates of physical activity, and weight loss. METHODS: Thirty-seven adults (percentage excess weight loss (%EWL) = 62.15 ±19.93, age = 50.76 ±9.99 years) participated. Subjects wore an activity monitor to measure their physical activity. Body height, weight, physical function, psychosocial variables of physical activity (self-efficacy, expected outcomes (benefits) and perceived barriers) and health related quality of life were measured. Assessment also included demographics, medical history, and dietary questionnaires. RESULTS: This study determined that subjects' who have undergone bariatric surgery participated in 205.33 ±136.98 minutes per week of ≥ 3METs for ≥ 1 minute bouts. The average dropped to 47.56 ± 69.84 minutes per week when including only bouts of 10 continuous minutes or more. Physical activity was correlated with %EWL (r=0.47, p=<0.01) and self-efficacy (r=0.39, p<=0.02), but not with physical function, expected outcomes (benefits), perceived barriers, or HRQOL. Physical function was correlated with %EWL (p<0.05). CONCLUSIONS: The subjects' activity level failed to meet standards that have been shown necessary for weight maintenance. Those subjects that were more confident in their ability to exercise were more active and had more success losing weight. These findings suggest that behavioral interventions should include a strategy to address self-efficacy. The disparity between physical activity and physical function would suggest that subjects are capable of performing most exercise and mobility activities. Future research should focus on exercise interventions that address self-efficacy and other behavioral barriers (e.g. musculoskeletal pain, psychosocial factors, and social stigma) with the goal of maximizing post surgical weight loss success.
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Details
Item Type: |
University of Pittsburgh ETD
|
Status: |
Unpublished |
Creators/Authors: |
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ETD Committee: |
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Date: |
8 June 2009 |
Date Type: |
Completion |
Defense Date: |
17 April 2009 |
Approval Date: |
8 June 2009 |
Submission Date: |
23 April 2009 |
Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
Institution: |
University of Pittsburgh |
Schools and Programs: |
School of Education > Health, Physical, Recreational Education |
Degree: |
PhD - Doctor of Philosophy |
Thesis Type: |
Doctoral Dissertation |
Refereed: |
Yes |
Uncontrolled Keywords: |
gastric bypass surgery; obesity; weight loss |
Other ID: |
http://etd.library.pitt.edu/ETD/available/etd-04232009-101049/, etd-04232009-101049 |
Date Deposited: |
10 Nov 2011 19:41 |
Last Modified: |
15 Nov 2016 13:42 |
URI: |
http://d-scholarship.pitt.edu/id/eprint/7567 |
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