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    Effects of Resistance Training on Insulin Sensitivity and Markers of Inflammation in Rheumatoid Arthritis Patients Treated with Remicade

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    Author
    Gates, Donald L.
    Issue Date
    2009
    Keywords
    infliximab
    Insulin Resistance
    Remicade
    Resistance Exercise
    Rheumatoid Arthritis
    Rheumatology
    Committee Chair
    Going, Scott B.
    
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    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    INTRODUCTION Rheumatoid arthritis (RA) is a disease of chronic inflammation in the joints and organs. RA patients exhibit 4-fold increased incidence of CVD, increased prevalence of insulin resistance (IR) and increased mortality. Aerobic and resistance training (RT) programs have been suggested for the management of RA symptoms and reduction of comorbidities, including insulin resistance. Exercise has been shown by recent evidence to be safe and beneficial in RA patients. RT has been documented to improve inflammation and insulin sensitivity. The present study was undertaken to examine the impact of a sixteen week intensive training regimen on disease status, body composition, markers of inflammation and indicators of insulin resistance in RA patients undergoing infliximab therapy, a potent RA treatment.METHODS30 RA patients were randomized into exercise (EX) or control (C) groups. EX patients underwent a 16-week supervised, intensive, progressive and individualized resistance training regimen. Participants were monitored by professional fitness trainers during all exercise sessions. Subjects were assessed prior to and after intervention. Assessments included disease status, strength and functional testing, anthropometrical and body composition analysis, analysis of markers of inflammation and assessment of insulin sensitivity.RESULTS EX subjects significantly increased in strength and functional ability without worsening of disease state, and increased lean mass from baseline. Fat mass was significantly reduced in EX. Glucose and resistin levels increased significantly following EX intervention. Mean IR was unchanged, but EX subjects with elevated IR did show improvement following training. Regression analysis indicates duration of infliximab therapy to be correlated with improved insulin sensitivity.CONCLUSIONS RA patients taking infliximab tolerated an intensive resistance training program. Participants increased strength and lean mass while decreasing fat mass and displayed improved functional capacity. Disease status was not worsened by the regimen. Though the mean measure of IR did not improve, those patients with the most adverse scores did show improvement following the intervention. Furthermore, regression analysis indicates that infliximab treatment duration was linked to reduced IR. In conclusion, resistance training improved strength and functional ability in RA patients taking infliximab without disease degradation, and may help reduce IR in those patients with elevated resistance.
    Type
    text
    Electronic Dissertation
    Degree Name
    Ph.D.
    Degree Level
    doctoral
    Degree Program
    Physiological Sciences
    Graduate College
    Degree Grantor
    University of Arizona
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