The Influence of Ankle Dorsiflexion Range of Motion on Unanticipated Cutting Kinematics

Hanzlíková, Ivana, Richards, James orcid iconORCID: 0000-0002-4004-3115 and Hébert-Losier, Kim (2022) The Influence of Ankle Dorsiflexion Range of Motion on Unanticipated Cutting Kinematics. Sport Sciences for Health . ISSN 1824-7490

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Purpose: Explore whether dorsiflexion range of motion (ROM) influences cutting kinematics.
Methods: Dorsiflexion ROM was measured in 42 individuals using the Weight-Bearing Lunge Test (WBLT). Unanticipated cutting kinematics were collected at initial contact (IC) and between IC and maximum knee flexion using three-dimensional motion and inertial measurement unit methods. Multiple linear regressions with sex as a confounder were used to explore the relationship between kinematic variables and WBLT dorsiflexion ROM for both legs.
Results: WBLT dorsiflexion ROM values were 51.33 ± 6.48° and 50.21 ± 7.00° on dominant and non-dominant legs, respectively. For dominant leg cutting, transverse plane knee ROM increased 0.20° (p = 0.037), sagittal plane trunk ROM increased 0.16° (p = 0.044), and trunk flexion at IC decreased 0.39° (p = 0.009) for each degree of WBLT dorsiflexion ROM measured. Males had 5.89° greater trunk flexion at IC than females. For non-dominant leg cutting, peak lateral trunk flexion towards the stance leg, and sagittal and coronal plane hip ROM increased 0.36° (p = 0.039), 0.24° (p = 0.017), and 0.21° (p = 0.005) for each degree of dorsiflexion ROM, respectively.
Conclusions: Dorsiflexion ROM influence cutting kinematics and may contribute to ACL injury.

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