Changes in Body Composition Following Bariatric Surgery
2018년 11월 19일 업데이트: Peter Nau
Roux-en-y Gastric Bypass Versus Sleeve Gastrectomy - Analysis of the Disparate Effects on Body Composition and Associated Comorbidity Resolution
Obesity is an important public health issue worldwide.
In the United States, the percentage of overweight and obese adults increased from 47 and 15%, respectively, to 69 and 36% in the last 40 years.
Medically supervised attempts at weight loss are fraught with failures and recidivism.
Surgical approaches to this important issue are both durable and effective.
The gold standard approach to the surgical treatment of obesity and the attendant medical comorbidities is the laparoscopic roux-en-y gastric bypass (RYGB) and the laparoscopic sleeve gastrectomy (LSG).
The mechanisms by which these two operations work and the associated side effects are not completely understood.
It is established that the RYGB induces changes in both the fatty tissue mass (FTM) and lean body mass (LBM) post-operatively.
This is associated with decreases in bone mineral density, basal metabolic rate, and potentially the ability to maintain weight loss.
There is only incomplete information on the influence that the LSG has on body composition.
This study proposes an evaluation of the changes in body composition that occurs following these two disparate operations.
Using serial measurements by the BodPod and collecting information on the patients' dietary intake, exercise habits and comorbidity resolution, this study will help to better define the influence that the LSG has on body composition.
It is hypothesized that the addition of a malabsorptive component will result in increased speed weight loss and overall weight loss which will have a negative impact in the preservation of lean tissue mass for the patient.
This information can then be used by bariatric surgeons to better cater the surgical procedure and post-operative plan to the patient's body make up and medical comorbidities.
연구 개요
상세 설명
Procedures
- All patients will undergo a bariatric surgery. The decision to undergo weight loss surgery and the operation chosen will both occur independent of and prior to enrollment in the study. The University of Iowa is a Bariatric Center of Excellence with three active, board-certified bariatric surgeons.
- Serial BodPod examinations will be performed on each patient. The BodPod is a commercially available device produced by Cosmed. It uses whole-body densitometry to determine body composition. To do this, it takes small changes in the volume of air in the BodPod chamber and records the associated changes in pressure. The pressure change typically goes unnoticed and is equivalent to the change in pressure while moving from the first floor to the second floor in an elevator. The entire process takes approximately five minutes with two minutes spent within the machine. The computer will then use mathematical formulas to calculate various body composition values.
- Laboratory analysis - There is a battery of labs that are ordered in both the pre-operative and post-operative time frame. These labs are ordered independent of the patient's participation in the study. These labs are ordered to assist in the management of the patient's medical comorbidities and to assess for adequate nutritional intake. These labs will also be recorded in the research database to assist in quantifying the degree of resolution of medical comorbidities.
- Queries on nutritional intake and exercise will be made at each post-operative appointment. The intake of protein is an important variable and may influence maintenance of lean tissue mass. Exercise is an important component of the post-bariatric weight loss program. This also will influence the changes in lean tissue mass.
연구 유형
관찰
등록 (실제)
136
연락처 및 위치
이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.
연구 장소
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Iowa
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Iowa City, Iowa, 미국, 52242
- University of Iowa Hospitals and Clinics
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참여기준
연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.
자격 기준
공부할 수 있는 나이
18년 (성인, 고령자)
건강한 자원 봉사자를 받아들입니다
예
연구 대상 성별
모두
샘플링 방법
비확률 샘플
연구 인구
The population consists of individuals who meet the NIH consensus statement for the surgical treatment of obesity.
These individuals will have a BMI greater than 35 kg/m2 and a medical comorbidity or 40 kg/m2.
These subjects will have voluntarily initiated a consultation for bariatric surgery and completed the pre-bariatric surgery weight management program.
After failing this program, the patients will undergo surgical consultation for bariatric surgery.
It is only after this consultation that the subjects will be approached for enrollement in the study.
설명
Inclusion Criteria:
- Individuals will have a BMI greater than 35 kg/m2 and a medical comorbidity or 40 kg/m2
- Individuals must have voluntarily initiated a surgical consultation for weight loss surgery
- Individuals must have completed a medical supervised weight loss program
Exclusion Criteria:
- Failure to adequately complete the pre-screening and educational program necessary to proceed with bariatric surgery
- Those who are or become pregnant
- Individuals with severe claustrophobia.
공부 계획
이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.
연구는 어떻게 설계됩니까?
디자인 세부사항
코호트 및 개입
그룹/코호트 |
개입 / 치료 |
|---|---|
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Bariatric Surgery - Gastric Bypass
This population will undergo a laparoscopic roux-en-y gastric bypass
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Patients enrolled will undergo either a laparoscopic Roux-en-y Gastric Bypass or laparoscopic Sleeve Gastrectomy.
The determination of which operation performed will be made independent of patients' enrollment in the study.
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Bariatric Surgery - Sleeve Gastrectomy
This group will undergo a laparoscopic sleeve gastrectomy
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Patients enrolled will undergo either a laparoscopic Roux-en-y Gastric Bypass or laparoscopic Sleeve Gastrectomy.
The determination of which operation performed will be made independent of patients' enrollment in the study.
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Body Composition
기간: Pre-op, 6 months and 12 months post-op
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Using the BodPod machine produced by Cosmed, changes in lean tissue mass and fatty tissue mass following either the laparoscopic roux-en-y gastric bypass or the laparoscopic sleeve gastrectomy will be assessed.
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Pre-op, 6 months and 12 months post-op
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Comorbidity resolution
기간: pre-op, 6 months post-op, 12 months post-op
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Assess for correlations between the changes in body composition and the resolution of medical comorbidities when comparing the LSG and RYGB.
This will be done using changes in medication regimen and changes in physical findings and laboratory values such as blood pressure and HbA1c.
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pre-op, 6 months post-op, 12 months post-op
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Protein intake and lean tissue mass
기간: Pre-op, 6 months post-op, 12 months post-op
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Assess for correlation between the preservation of lean tissue mass and daily protein intake and whether the type of operation (roux-en-y gastric bypass and sleeve gastrectomy) plays a role.
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Pre-op, 6 months post-op, 12 months post-op
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Exercise and lean tissue mass preservation
기간: Pre-op, 6 months post-op, 12 months post-op
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Test for a correlation between the changes in body composition and the amount of physical activity the patient takes part in and whether this is influenced by the type of procedure the patient had (roux-en-y gastric bypass versus sleeve gastrectomy).
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Pre-op, 6 months post-op, 12 months post-op
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공동 작업자 및 조사자
여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.
스폰서
수사관
- 수석 연구원: Peter N Nau, MD, MS, University of Iowa
간행물 및 유용한 링크
연구에 대한 정보 입력을 담당하는 사람이 자발적으로 이러한 간행물을 제공합니다. 이것은 연구와 관련된 모든 것에 관한 것일 수 있습니다.
일반 간행물
- Schauer PR, Kashyap SR, Wolski K, Brethauer SA, Kirwan JP, Pothier CE, Thomas S, Abood B, Nissen SE, Bhatt DL. Bariatric surgery versus intensive medical therapy in obese patients with diabetes. N Engl J Med. 2012 Apr 26;366(17):1567-76. doi: 10.1056/NEJMoa1200225. Epub 2012 Mar 26.
- Sjostrom L, Lindroos AK, Peltonen M, Torgerson J, Bouchard C, Carlsson B, Dahlgren S, Larsson B, Narbro K, Sjostrom CD, Sullivan M, Wedel H; Swedish Obese Subjects Study Scientific Group. Lifestyle, diabetes, and cardiovascular risk factors 10 years after bariatric surgery. N Engl J Med. 2004 Dec 23;351(26):2683-93. doi: 10.1056/NEJMoa035622.
- Chaston TB, Dixon JB, O'Brien PE. Changes in fat-free mass during significant weight loss: a systematic review. Int J Obes (Lond). 2007 May;31(5):743-50. doi: 10.1038/sj.ijo.0803483. Epub 2006 Oct 31.
- Moize V, Andreu A, Rodriguez L, Flores L, Ibarzabal A, Lacy A, Jimenez A, Vidal J. Protein intake and lean tissue mass retention following bariatric surgery. Clin Nutr. 2013 Aug;32(4):550-5. doi: 10.1016/j.clnu.2012.11.007. Epub 2012 Nov 14.
- Hu FB. Resolved: there is sufficient scientific evidence that decreasing sugar-sweetened beverage consumption will reduce the prevalence of obesity and obesity-related diseases. Obes Rev. 2013 Aug;14(8):606-19. doi: 10.1111/obr.12040. Epub 2013 Jun 13.
- Popkin BM, Adair LS, Ng SW. Global nutrition transition and the pandemic of obesity in developing countries. Nutr Rev. 2012 Jan;70(1):3-21. doi: 10.1111/j.1753-4887.2011.00456.x.
- Kautiainen S, Rimpela A, Vikat A, Virtanen SM. Secular trends in overweight and obesity among Finnish adolescents in 1977-1999. Int J Obes Relat Metab Disord. 2002 Apr;26(4):544-52. doi: 10.1038/sj.ijo.0801928.
- Heude B, Lafay L, Borys JM, Thibult N, Lommez A, Romon M, Ducimetiere P, Charles MA. Time trend in height, weight, and obesity prevalence in school children from Northern France, 1992-2000. Diabetes Metab. 2003 Jun;29(3):235-40. doi: 10.1016/s1262-3636(07)70032-0.
- Jackson-Leach R, Lobstein T. Estimated burden of paediatric obesity and co-morbidities in Europe. Part 1. The increase in the prevalence of child obesity in Europe is itself increasing. Int J Pediatr Obes. 2006;1(1):26-32. doi: 10.1080/17477160600586614.
- Himpens J, Cadiere GB, Bazi M, Vouche M, Cadiere B, Dapri G. Long-term outcomes of laparoscopic adjustable gastric banding. Arch Surg. 2011 Jul;146(7):802-7. doi: 10.1001/archsurg.2011.45. Epub 2011 Mar 21.
- Jackson TD, Hutter MM. Morbidity and effectiveness of laparoscopic sleeve gastrectomy, adjustable gastric band, and gastric bypass for morbid obesity. Adv Surg. 2012;46:255-68. doi: 10.1016/j.yasu.2012.05.002.
- Tsai S. Importance of lean body mass in the oncologic patient. Nutr Clin Pract. 2012 Oct;27(5):593-8. doi: 10.1177/0884533612457949. Epub 2012 Aug 16.
- Guillet C, Masgrau A, Walrand S, Boirie Y. Impaired protein metabolism: interlinks between obesity, insulin resistance and inflammation. Obes Rev. 2012 Dec;13 Suppl 2:51-7. doi: 10.1111/j.1467-789X.2012.01037.x.
- de Aquino LA, Pereira SE, de Souza Silva J, Sobrinho CJ, Ramalho A. Bariatric surgery: impact on body composition after Roux-en-Y gastric bypass. Obes Surg. 2012 Feb;22(2):195-200. doi: 10.1007/s11695-011-0500-4.
- Carey DG, Pliego GJ, Raymond RL, Skau KB. Body composition and metabolic changes following bariatric surgery: effects on fat mass, lean mass and basal metabolic rate. Obes Surg. 2006 Apr;16(4):469-77. doi: 10.1381/096089206776327378.
연구 기록 날짜
이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.
연구 주요 날짜
연구 시작
2014년 5월 1일
기본 완료 (실제)
2018년 10월 1일
연구 완료 (실제)
2018년 10월 1일
연구 등록 날짜
최초 제출
2014년 5월 22일
QC 기준을 충족하는 최초 제출
2014년 5월 22일
처음 게시됨 (추정)
2014년 5월 28일
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
2018년 11월 20일
QC 기준을 충족하는 마지막 업데이트 제출
2018년 11월 19일
마지막으로 확인됨
2018년 11월 1일
추가 정보
이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .
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