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Using Continuous Data Tracking Technology to Study Exercise Adherence in Pulmonary Rehabilitation
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Self-reported Home Exercise Adherence: A Validity and Reliability Study Using Concealed Accelerometers.

Philippa J A Nicolson, Rana S Hinman, Tim V Wrigley

    The Journal of Orthopaedic and Sports Physical Therapy
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    PubMed
    Summary
    This summary is machine-generated.

    Exercise diaries and self-report scales overestimate adherence to home exercise programs. Accelerometer measurements reveal questionable validity and reliability for these common adherence tracking methods.

    Keywords:
    clinical measurementexercise diaryself-report scale

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    Area of Science:

    • Clinical measurement
    • Rehabilitation science
    • Exercise physiology

    Background:

    • Accurate measurement of exercise adherence is crucial for effective rehabilitation.
    • Existing methods like diaries and self-report scales lack robust evidence for validity and reliability.

    Purpose of the Study:

    • To assess the concurrent validity of exercise diaries and a self-report rating scale against accelerometer data for home strengthening exercises.
    • To evaluate the test-retest reliability of the self-report adherence rating scale.

    Main Methods:

    • A clinical measurement study involving 54 adults with chronic knee pain prescribed a home quadriceps-strengthening program over 12 weeks.
    • Adherence was measured using paper diaries, an 11-point rating scale, and a concealed accelerometer in an ankle cuff weight.
    • Data were analyzed using descriptive statistics, Wilcoxon signed-rank test, Bland-Altman plots, Spearman correlations, and intraclass correlation coefficients.

    Main Results:

    • Exercise diaries significantly overestimated adherence compared to accelerometer data (median 220 vs. 176 exercises) with moderate correlation (r=0.52).
    • A self-report rating scale demonstrated poor to fair correlations (mean r=0.23-0.39) with accelerometer data.
    • The rating scale showed less than acceptable test-retest reliability (ICC=0.79).

    Conclusions:

    • Exercise diaries exhibit questionable validity and variable agreement with objective accelerometer measures of exercise completion.
    • Self-reported adherence via rating scales has limited validity and insufficient test-retest reliability for accurately measuring exercise adherence.