Energy Expenditure and Gastric Bypass Surgery
This study has been withdrawn prior to enrollment.
(no patients enrolled.)
First Posted: March 18, 2009
Last Update Posted: February 12, 2015
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Information provided by (Responsible Party):
James Levine, Mayo Clinic
The aim of this study is to assess whether activity thermogenesis increases in patients undergoing bariatric surgery post-operatively compared to pre-operatively. The investigators will assess non-exercise activity thermogenesis using a validated Physical Activity Monitoring System and doubly labeled water, immediately pre-operatively and again at 6 and 18 months post-operatively. PAMS has been validated in lean and obese individuals. This is to assess energy expenditure, activity thermogenesis and NEAT during the phase of greatest weight loss and once weight loss has plateaued. This will permit us to address our primary hypothesis that activity thermogenesis as a fraction of total daily energy expenditure increases in patients undergoing bariatric surgery 6 and 18 months post-operatively, compared to pre-operatively.
|Gastric Bypass Surgery|
|Study Design:||Observational Model: Cohort
Time Perspective: Prospective
|Official Title:||Energy Expenditure and Gastric Bypass Surgery|
Further study details as provided by James Levine, Mayo Clinic:
Primary Outcome Measures:
- TDEE (total daily energy expenditure) [ Time Frame: March 2009 to October 2013 ]Activity thermogenesis as a fraction of total daily energy expenditure increases in patients undergoing bariatric surgery 6 and 18 months post-operatively, compared to pre-operatively.
|Study Start Date:||October 2009|
|Study Completion Date:||October 2012|
|Primary Completion Date:||October 2012 (Final data collection date for primary outcome measure)|
Contacts and Locations
No Contacts or Locations Provided