Defense Date

2011

Document Type

Dissertation

Degree Name

Doctor of Philosophy

Department

Nursing

First Advisor

Nancy McCain

Abstract

Gastric banding as a weight loss surgery has increased in popularity in the United States since its approval by the Food and Drug Administration in 2001. Successful weight loss after weight loss surgery is most frequently defined as greater than 50 percent of excess weight loss (EWL). Systematic reviews show that the band is widely effective in achieving successful weight loss in most patients, however individual studies show more inconsistent outcomes. Although previous research supports gastric bypass surgery as having a positive effect on quality of life after gastric bypass, there is very little data to support this relationship in gastric banding patients. Weight loss outcomes after gastric banding surgery at Virginia Commonwealth Health System were less than 50 per cent EWL at one and two years. A retrospective, descriptive study sought to answer the following questions: 1) What is the relationship between physical activity, eating behaviors and hunger control on weight loss and quality of life after gastric banding surgery and 2) Does successful weight loss at one year predict successful weight loss at two years. The International Physical Activity Questionnaire Sort Form (IPAQ) was used to assess participation in physical activity. The Medical Outcomes Study Short Form (SF-36) was used to determine quality of life. Weight loss outcomes were 34.6 per cent at one year and 39.7 per cent at two years, which was less than the established success rate of greater than 50 per cent EWL, However, most patients lost some weight and demonstrated a significant improvement in most domains of health related quality of life. Participation in physical activity increased fro preoperatively to year one but decreased in year two. Although participation in physical activities overall decreased from year one to year two, there was a significant relationship between participation in greater than 150 minutes per week of moderate or vigorous physical activity and adequate weight loss (p =0.025) and participation in health enhancing physical activities and adequate weight loss (p < 0.05). There was no statistically significant relationship noted between any of these eating behaviors and the percentage of excess weight loss at one or two years. There was a significant relationship between degree of hunger reported by patients and successful weight loss at one year (p < 0.05). There is sufficient statistical evidence of a positive linear relationship between two- year weight loss and one- year weight loss (p < 0.05). That is, one-year weight loss is a significant predictor for two- year weight loss. Based on the results of this study, it is recommended that gastric banding patients participate in at least 150 minutes per week of moderate to vigorous physical activity. Additionally, clinicians should consider development of adjustment protocols that achieve early reduction of hunger in the banding patient.

Rights

© The Author

Is Part Of

VCU University Archives

Is Part Of

VCU Theses and Dissertations

Date of Submission

May 2011

Included in

Nursing Commons

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