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Obesity Surgery
Published in: Obesity Surgery 11/2011

01-11-2011 | Allied Care

Influence of Activity Levels and Energy Intake on Percent Excess Weight Loss After Roux-en-Y Gastric Bypass

Authors: Steven Forbush, Leah Nof, John Echternach, Cheryl Hill, Jacquie Rainey

Published in: Obesity Surgery | Issue 11/2011

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Abstract

Background

Gastric bypass is a successful medical intervention for weight loss for obesity. Weight loss is substantial after this surgery. Predictors of the most successful weight loss are not yet fully known. The purpose of this study was to define variables that improve percent excess weight loss (%EWL) in this post-surgical population.

Methods

All patients who underwent the Roux-en-Y gastric bypass (RYGB) during the 5 years preceding the study in one surgical practice (n = 805; respondents = 265; 33%) received the Arizona Activity Frequency Questionnaire and the Arizona Food Frequency Questionnaire. Analysis through ANOVA testing to determine relationships between selected behaviors and %EWL was performed.

Results

Comparisons of differences in mean %EWL were analyzed using the variables of energy consumption/day (energy consumption), hours of activity/day (hours in activity), and energy expended in activity/day (energy expended). Patients with more energy expended, and hours in activity demonstrated significantly better %EWL (p = 0.05) when compared to those with less energy expended or hours in activity. Reported energy consumption did not significantly influence %EWL in this study.

Conclusions

This research suggests that in this sample of post-RYGB patients, energy expended in activity, as either energy expended or hours in activity improved their %EWL over those persons not expending as much energy in activity. Increasing the hours in activity improved the maintenance of %EWL in these respondents. Energy consumption did not have a statistically significant effect on %EWL or maintenance of %EWL in these subjects.
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Metadata
Title
Influence of Activity Levels and Energy Intake on Percent Excess Weight Loss After Roux-en-Y Gastric Bypass
Authors
Steven Forbush
Leah Nof
John Echternach
Cheryl Hill
Jacquie Rainey
Publication date
01-11-2011
Publisher
Springer-Verlag
Published in
Obesity Surgery / Issue 11/2011
Print ISSN: 0960-8923
Electronic ISSN: 1708-0428
DOI
https://doi.org/10.1007/s11695-011-0450-x

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