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  • Title: Validity and Reliability of a Digital Inclinometer to Assess Knee Joint-Position Sense in a Closed Kinetic Chain.
    Author: Romero-Franco N, Montaño-Munuera JA, Jiménez-Reyes P.
    Journal: J Sport Rehabil; 2017 Jan; 26(1):. PubMed ID: 27632887.
    Abstract:
    CONTEXT: Knee joint position sense (JPS) is a key parameter for optimum performance in many sports but is frequently negatively affected by injuries and/or fatigue during training sessions. Although evaluation of JPS may provide key information to reduce the risk of injury, it often requires expensive and/or complex tools that make monitoring proprioceptive deterioration difficult. OBJECTIVE: To analyze the validity and reliability of a digital inclinometer to measure knee JPS in a closed kinetic chain (CKC). DESIGN: The validity and intertester and intratester reliability of a digital inclinometer for measuring knee JPS were assessed. SETTING: Biomechanics laboratory. PARTICIPANTS: 10 athletes (5 men and 5 women; 26.2 ± 1.3 y, 71.7 ± 12.4 kg; 1.75 ± 0.09 m; 23.5 ± 3.9 kg/m2). INTERVENTION: Knee JPS was measured in a CKC. MAIN OUTCOME MEASURES: Absolute angular error (AAE) of knee JPS in a CKC. RESULTS: Intraclass correlation coefficient (ICC) and standard error of the mean (SEM) were calculated to determine the validity and reliability of the inclinometer. Data showed that the inclinometer had a high level of validity compared with an isokinetic dynamometer (ICC = 1.0, SEM = 1.39, p < 0.001), and there was very good intra- and inter-tester reliability for reading the inclinometer (ICC = 1.0, SEM = 0.85, p < 0.001). Compared with AutoCAD video analysis, inclinometer validity was very high (ICC = 0.980, SEM = 3.46, p < 0.001) for measuring AAE during knee JPS in a CKC. In addition, the intertester reliability of the inclinometer for obtaining AAE was very high (ICC = .994, SEM = 1.67, p < 0.001). CONCLUSION: The inclinometer provides a valid and reliable method for assessing knee JPS in a CKC. Health and sports professionals could take advantage of this tool to monitor proprioceptive deterioration in athletes.
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