• Pak J Med Sci · Mar 2022

    Inter-rater reliability of pressure biofeedback unit among individuals with and without chronic low back pain.

    • Muhammad Khan, Hamayun Zafar, and Syed Amir Gilani.
    • Dr. Muhammad Khan PT, MSPT (UK), Institute of Physical Therapy & Rehabilitation Jinnah Sindh Medical University, Karachi, Pakistan.
    • Pak J Med Sci. 2022 Mar 1; 38 (4Part-II): 987-991.

    ObjectivesTo determine the inter-rater reliability of pressure biofeedback unit among individuals with and without chronic low back pain.MethodsThis cross-sectional survey was conducted from February 2021 to March 2021 at the Physiotherapy Department of the Sindh Institute of Physical Medicine and Rehabilitation. Sixteen subjects which were recruited with and without chronic low back pain.(CLBP). During the test, abdominal drawing in movement was monitored by measuring a change in pressure detected in PBU. Each test was performed once by two trained assessors with period of seven days. Reliability indices of Pressure Biofeedback (PBU) measures including the Intraclass correlation coefficient [ICC] and Band Altman plot were analyzed.ResultsThis study found an intra-class correlation coefficient (ICC) = 0.94 [95% confidence interval (CI) (0.37, 0.99] for inter-rater reliability in healthy individuals, and an ICC of 0.97 (95% CI 0.97, 0.98) for inter-rater reliability in CLBP. The interrater agreement (Limits of Agreement-LOA=5.92, -3.9 mmHg) in CLBP and the interrater agreement (LOA=5.75, -3.25 mmHg) in healthy individuals were within the limits of agreement on 95% of occasions.ConclusionPressure Biofeedback Unit has showed excellent inter-rater reliability in measuring Transverse Abdominis muscle activity for individuals with and without chronic LBP.Copyright: © Pakistan Journal of Medical Sciences.

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