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    Metabolic Benefits of Prior Weight Loss with and without Exercise on Subsequent 6-Month Weight Regain

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    Author
    Ryan, A.S.
    Serra, M.C.
    Goldberg, A.P.
    Date
    2018
    Journal
    Obesity
    Publisher
    Blackwell Publishing Inc.
    Type
    Article
    
    Metadata
    Show full item record
    See at
    https://dx.doi.org/10.1002/oby.22032
    Abstract
    Objective To determine the 6‐month follow‐up effects after intentional 6‐month weight loss alone (WL) and after weight loss with aerobic exercise (AEX + WL) on body composition, glucose metabolism, and cardiovascular disease risk factors in older postmenopausal women and to identify the mechanisms for weight regain. Methods Women (n = 65, BMI > 25 kg/m2) underwent maximal oxygen consumption testing, dual‐energy x‐ray absorptiometry, computed tomography scans, and oral glucose tolerance tests before and after 6 months of AEX + WL or WL and at 12 months ad libitum follow‐up. Insulin sensitivity (M) (hyperinsulinemic‐euglycemic clamp) was measured at baseline and 6 months. Thirty WL and thirty‐five AEX + WL women completed a follow‐up at 12 months. Results Similar weight loss was observed (−8%) in both groups from 0 to 6 months. Total fat mass, fat‐free mass, visceral fat area, subcutaneous abdominal and midthigh fat areas, fasting glucose, insulin levels, homeostatic model assessment of insulin resistance (HOMA‐IR), insulin areas under the curve, and triglyceride levels decreased similarly after WL and AEX + WL and remained lower at 12 months than at baseline, despite weight regain at 12 months. Initial M was associated with weight regain (r = −0.40, P < 0.01). Weight regain was related to independent changes in leptin and HOMA‐IR from 6 to 12 months in a multiple regression model (r = 0.77, P < 0.0001). Conclusions Reductions in body fat and improvements in insulin sensitivity after AEX + WL and WL were maintained at 12 months despite modest weight regain. Baseline insulin resistance partially predicted the magnitude of weight regain in postmenopausal women. Copyright 2017 The Obesity Society
    Sponsors
    Funding agencies: This research was supported by funds from a Senior Research Career Scientist Award (ASR) and a Career Development Award IK2RX-000944 (MCS) from the United States Department of Veterans Affairs Rehabilitation Research and Development Service and the Geriatric Research, Education and Clinical Center at the Baltimore Veterans Affairs Medical Center and by the National Institutes of Health grants R01-AG19310, R01-AG20116, P30-AG028747, and P30-DK072488. Disclosure: The authors declared no conflict of interest. Clinical trial registration: ClinicalTrials.gov identifier NCT00882141. Received: 30 May 2017; Accepted: 6 September 2017; Published online 25 October 2017. doi:10.1002/oby.22032
    Keyword
    Aged
    Exercise
    Female
    Humans
    Male
    Middle Aged
    Obesity
    Time Factors
    Weight Loss
    Identifier to cite or link to this item
    https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032296956&doi=10.1002%2foby.22032&partnerID=40&md5=4e0cdb181092ac0bf4131c702b061542; http://hdl.handle.net/10713/8910
    ae974a485f413a2113503eed53cd6c53
    10.1002/oby.22032
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