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  • Diet-induced weight loss alone or combined with exercise in overweight or obese people with knee osteoarthritis: A systematic review and meta-analysis

    Author(s)
    Hall, Michelle
    Castelein, Birgit
    Wittoek, Ruth
    Calders, Patrick
    Van Ginckel, Ans
    Griffith University Author(s)
    Hall, Michelle
    Year published
    2019
    Metadata
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    Abstract
    Objectives: The purposes were to (i) determine the effect of diet-only treatments and combined diet and exercise treatments on pain and physical function and (ii) explore the effect of these treatments on inflammatory biomarkers in overweight and obese adults with knee osteoarthritis. Methods: Five electronic databases were searched until March 2017. Randomised controlled trials investigating the effect of non-surgical non-pharmacological weight loss treatment, with or without exercise, on self-reported pain and/or physical function and/or inflammatory biomarkers were selected. Two review authors independently extracted ...
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    Objectives: The purposes were to (i) determine the effect of diet-only treatments and combined diet and exercise treatments on pain and physical function and (ii) explore the effect of these treatments on inflammatory biomarkers in overweight and obese adults with knee osteoarthritis. Methods: Five electronic databases were searched until March 2017. Randomised controlled trials investigating the effect of non-surgical non-pharmacological weight loss treatment, with or without exercise, on self-reported pain and/or physical function and/or inflammatory biomarkers were selected. Two review authors independently extracted data and assessed risk of bias for each study. Standardised mean differences (SMD) of outcomes were pooled as appropriate, using a random effects approach. Results: 2676 articles were identified, 19 met review criteria and 9 met criteria for meta-analyses. Diet-only treatments did not reduce pain (SMD −0.13; 95% confidence interval, CI: −0.37, 0.10; I2 = 49%) while a combination of diet and exercise treatments did reduce pain moderately (SMD −0.37; 95%CI: −0.69, −0.04; I2 = 54%). Physical function improved moderately with diet treatments (SMD −0.30; 95%CI: −0.52, −0.08; I2 = 47%) and combined diet and exercise treatments (SMD −0.32; 95%CI: −0.56, −0.08; I2 = 24%). Of the inflammatory markers assessed, only IL-6 reduced with diet-only treatments (SMD −0.23; 95%CI: −0.45, −0.02; I2 = 0%). Conclusion: Overall, moderate pain-relief is achievable with a combination of diet and exercise, but potentially not with diet-only treatments. Findings support that either diet-only treatments or combined diet and exercise treatments moderately improve physical function. Overall, treatment effects on inflammatory biomarkers are questionable.
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    Journal Title
    SEMINARS IN ARTHRITIS AND RHEUMATISM
    Volume
    48
    Issue
    5
    DOI
    https://doi.org/10.1016/j.semarthrit.2018.06.005
    Subject
    Clinical Sciences
    Public Health and Health Services
    Publication URI
    http://hdl.handle.net/10072/386022
    Collection
    • Journal articles

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