1. Landing instructions focused on pelvic and trunk lateral tilt decrease the knee abduction moment during a single-leg drop vertical jump.
- Author
-
Chijimatsu M, Ishida T, Yamanaka M, Taniguchi S, Ueno R, Ikuta R, Samukawa M, Ino T, Kasahara S, and Tohyama H
- Subjects
- Anterior Cruciate Ligament Injuries physiopathology, Anterior Cruciate Ligament Injuries prevention & control, Biomechanical Phenomena, Female, Humans, Leg, Movement, Rotation, Young Adult, Knee physiology, Pelvis physiology, Plyometric Exercise, Torso physiology
- Abstract
Objectives: To investigate the effects of pelvic and trunk lateral tilt-focused landing instructions on the knee abduction moment during the single-leg drop vertical jump task., Design: Descriptive laboratory study., Setting: Motion analysis laboratory., Participants: Fifteen young, healthy female participants., Main Outcome Measures: The participants performed 15 single-leg drop vertical jumps. Landing instructions with self-video recordings were provided so that the participants' pelvis and trunk remained horizontal in the frontal plane. Pelvic, trunk and knee kinematics and kinetics were evaluated using a three-dimensional motion analysis system before and after the landing instructions., Results: The peak knee abduction moment significantly decreased postinstruction (preinstruction 22.6 ± 15.3 Nm, postinstruction 17.9 ± 15.4 Nm, P = 0.004), as did pelvic and trunk lateral tilt (P < 0.01). The knee abduction and internal rotation angles at initial contact significantly decreased postinstruction (P = 0.037, P = 0.007), with no significant change in the peak knee abduction and internal rotation angles from pre-to postinstruction., Conclusions: Landing instructions focused on pelvic and trunk lateral tilt are effective in decreasing the knee abduction moment during the single-leg drop vertical jump. Pelvic and trunk lateral tilt should be controlled to decrease the knee abduction moment during single-leg landing., Competing Interests: Declaration of competing interest None declared., (Copyright © 2020 Elsevier Ltd. All rights reserved.)
- Published
- 2020
- Full Text
- View/download PDF