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ERIC Number: EJ1251324
Record Type: Journal
Publication Date: 2020
Pages: 6
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-1091-367X
EISSN: N/A
Peak Power Assessment of Isokinetic Knee Flexor and Extensor Tests -- Pitfalls of a Dynamometer-Based Assessment
Alt, Tobias; Knicker, Axel J.; Severin, Jannik; Horn, Dennis; Nodler, Yannick T.; Strüder, Heiko K.
Measurement in Physical Education and Exercise Science, v24 n2 p123-128 2020
Many sports demand high forces at high movement speeds. Joint power combines these two measures and is frequently analyzed by isokinetic tests. However, various concepts of assessing joint power lead to conflicting results. The aim was to examine different methods to calculate peak power during isokinetic knee tests of sixty-one healthy male participants (20 y, 182 cm, 76 kg). Unilateral movements of the eccentrically working hamstrings and the concentrically working quadriceps at 150°/s were captured by high-speed cameras. Peak power derived from isokinetic data was significantly higher (p < 0.01, d > 1.54) compared to the camera-based kinematic procedures. To achieve best accuracy, peak power should be derived from the camera-based joint angular velocity and the measured moment at time of peak power during the dynamometer's isokinetic range of motion. A meaningful assessment of isokinetic joint power should incorporate a camera-based kinematic analysis to account for potential measuring inaccuracies owing to anatomical features, axis misalignment, and tissue deformation.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A