Do Cutting Kinematics Change as Boys Mature? A Longitudinal Cohort Study of High-School Athletes.

Autor:	Chia L; Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia.; Cleveland Guardians Baseball Company, Cleveland, Ohio., Myer GD; Emory Sport Performance and Research Center, Flowery Branch, Georgia.; Emory Sports Medicine Center, Atlanta, Georgia.; Department of Orthopaedics, Emory University School of Medicine, Atlanta, Georgia.; The Micheli Center for Sports Injury Prevention, Waltham, Massachusetts., Hewett TE; Hewett Global Consulting, Minneapolis & Rochester, Minnesota.; The Rocky Mountain Consortium for Sports Research, Edwards, Colorado., McKay MJ; Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia., Sullivan J; Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia., Ford KR; Department of Physical Therapy, Congdon School of Health Sciences, High Point University, High Point, North Carolina., Pappas E; Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia.; The University of Wollongong, School of Medicine and Illawarra Health and Medical Research Institute, NSW, Australia.
Jazyk:	angličtina
Zdroj:	Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine [Clin J Sport Med] 2023 Mar 01; Vol. 33 (2), pp. e8-e13. Date of Electronic Publication: 2022 Nov 11.
DOI:	10.1097/JSM.0000000000001095
Abstrakt:	Objective: Examine longitudinal changes in trunk, hip, and knee kinematics in maturing boys during an unanticipated cutting task. Design: Prospective cohort study. Setting: Biomechanical laboratory. Participants: Forty-two high-school male basketball, volleyball, and soccer athletes. Assessment of Risk Factors: Trunk, hip, and knee range-of-motion (RoM), peak angles, and angles at initial contact during an unanticipated 45 degrees sidestep cutting task were estimated using laboratory-based three-dimensional optoelectronic motion capture. Maturation was classified using a modified Pubertal Maturational Observational Scale (PMOS) into prepubertal, midpubertal, or postpubertal stages. Main Outcome Measures: Trunk total RoM in frontal, sagittal, and transverse planes; peak trunk flexion, right lateral flexion and right rotation angles; hip total RoM in frontal, sagittal, and transverse planes; hip flexion angle at initial contact; peak hip flexion and adduction angles; knee total RoM in frontal, sagittal, and transverse planes; knee flexion angle at initial contact; peak knee flexion and abduction angles. Results: As boys matured, there was a decrease in hip sagittal-plane RoM (49.02 degrees to 43.45 degrees, Benjamini-Hochberg adjusted P = 0.027), hip flexion at initial contact (29.33 degrees to 23.08 degrees, P = 0.018), and peak hip flexion (38.66 degrees to 32.71 degrees, P = 0.046), and an increase in trunk contralateral rotation (17.47 degrees to 25.05 degrees, P = 0.027). Conclusions: Maturing male athletes adopted a more erect cutting strategy that is associated with greater knee joint loading. Knee kinematic changes that increase knee joint loading were not observed in this cohort. (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)
Databáze:	MEDLINE
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