BACKGROUND: This study aimed to evaluate the effect of Kinesiology Taping (KT) on lumbar proprioception, pain, and functional disability in individuals with nonspecific chronic low back pain (CLBP). METHODS: Thirty individuals with nonspecific CLBP participated in this double-blinded, randomized clinical trial from July 2017 to September 2018. The participants were randomized into two groups: KT (n = 15) and placebo group (n = 15). KT was applied with 15 to 25% tension for 72 h, and placebo taping was used without tension. Lumbar repositioning error was measured by a bubble inclinometer at three different angles (45 degrees and 60 degrees flexion, and 15 degrees extension) in upright standing. Pain and disability were assessed by the Short-Form McGill Pain Questionnaire and Oswestry Disability Index, respectively. All measurements were recorded at baseline and 3 days after taping. RESULTS: Pain and disability scores reduced 3 days after taping in the KT group with large effect sizes (p < 0.05). Only the total score of pain was significantly different between the groups 3 days after taping and improved more in the KT group with a large effect size (p < 0.05). However, lumbar repositioning errors were similar between the groups after 3 days (p > 0.05). Also, only constant error of 15 degree extension showed a moderate correlation with disability (r = 0.39, p = 0.02). CONCLUSION: KT can decrease pain and disability scores after 3 days of application. Although placebo taping can reduce pain, the effect of KT is higher than placebo taping. The findings do not support the therapeutic effect of KT and placebo taping as a tool to enhance lumbar proprioception in patients with nonspecific CLBP. TRIAL REGISTRATION: The study prospectively registered on 21.05.2018 at the Iranian Registry of Clinical Trials: IRCT20090301001722N20.

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