title: Validation of the Microsoft Kinect® camera system for measurement of lower extremity jump landing and squatting kinematics.
abstract: Cost effective, quantifiable assessment of lower extremity movement represents potential improvement over standard tools for evaluation of injury risk. Ten healthy participants completed three trials of a drop jump, overhead squat, and single leg squat task. Peak hip and knee kinematics were assessed using an 8 camera BTS Smart 7000DX motion analysis system and the Microsoft Kinect® camera system. The agreement and consistency between both uncorrected and correct Kinect kinematic variables and the BTS camera system were assessed using interclass correlations coefficients. Peak sagittal plane kinematics measured using the Microsoft Kinect® camera system explained a significant amount of variance [Range(hip) = 43.5-62.8%; Range(knee) = 67.5-89.6%] in peak kinematics measured using the BTS camera system. Across tasks, peak knee flexion angle and peak hip flexion were found to be consistent and in agreement when the Microsoft Kinect® camera system was directly compared to the BTS camera system but these values were improved following application of a corrective factor. The Microsoft Kinect® may not be an appropriate surrogate for traditional motion analysis technology, but it may have potential applications as a real-time feedback tool in pathological or high injury risk populations.
authors.affiliation: a Department of Kinesiology and Sport Sciences , University of Miami , Coral Gables , FL , USA.
authors.forename: Moataz
authors.initials: M
authors.lastname: Eltoukhy
authors.affiliation: b Department of Kinesiology , Michigan State University , East Lansing, MI , USA.
authors.forename: Adam
authors.initials: A
authors.lastname: Kelly
authors.affiliation: a Department of Kinesiology and Sport Sciences , University of Miami , Coral Gables , FL , USA.
authors.forename: Chang-Young
authors.initials: CY
authors.lastname: Kim
authors.affiliation: a Department of Kinesiology and Sport Sciences , University of Miami , Coral Gables , FL , USA.
authors.forename: Hyung-Pil
authors.initials: HP
authors.lastname: Jun
authors.affiliation: a Department of Kinesiology and Sport Sciences , University of Miami , Coral Gables , FL , USA.
authors.forename: Richard
authors.initials: R
authors.lastname: Campbell
authors.affiliation: b Department of Kinesiology , Michigan State University , East Lansing, MI , USA.
authors.forename: Christopher
authors.initials: C
authors.lastname: Kuenze
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D035002:Lower Extremity / Q000502:physiology*; D008297:Male; D009068:Movement; D016059:Range of Motion, Articular; D012984:Software; D013996:Time and Motion Studies; D055815:Young Adult
keywords: Depth camera; clinical motion analysis; injury screening