Unilateral jump landing neuromechanics of individuals with chronic ankle instability

Moisan, Gabriel; Mainville, Camille; Descarreaux, Martin; Cantin, Vincent

doi:10.1016/j.jsams.2019.11.003

Cited by 20 publications

(23 citation statements)

References 29 publications

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Section: O N L I N E F I R S Tmentioning

confidence: 99%

“…During unilateral drop jump landing on a flat surface (DROP), individuals with CAI exhibit greater ankle dorsiflexion angles, 9,10 ankle inversion angles, 11 knee flexion angles 9 as well as less peroneus longus 11,12 and vastus lateralis 13 muscle activity (prelanding) compared to healthy individuals. During landing on more challenging surfaces such as unstable 13 or inclined, [13][14][15] altered lower limb biomechanics could place individuals with CAI at greater risk of sustaining recurrent LAS. Indeed, previous studies that quantified lower limb biomechanics during unilateral drop jump landing on an inclined surface (WEDGE) showed a longer peroneus longus activation latency, 14,15 reduced peroneus longus activation, 13,15,16 reduced gluteus medius muscle activation 13 and greater ankle inversion angles 14,15,17 in individuals with CAI compared to healthy counterparts.…”

Section: O N L I N E F I R S Tmentioning

confidence: 99%

“…During landing on more challenging surfaces such as unstable 13 or inclined, [13][14][15] altered lower limb biomechanics could place individuals with CAI at greater risk of sustaining recurrent LAS. Indeed, previous studies that quantified lower limb biomechanics during unilateral drop jump landing on an inclined surface (WEDGE) showed a longer peroneus longus activation latency, 14,15 reduced peroneus longus activation, 13,15,16 reduced gluteus medius muscle activation 13 and greater ankle inversion angles 14,15,17 in individuals with CAI compared to healthy counterparts. During unilateral drop jump landing on an unstable surface (FOAM), greater ankle dorsiflexion angles were reported between participants with CAI and healthy controls.…”

Section: O N L I N E F I R S Tmentioning

confidence: 99%

“…During unilateral drop jump landing on an unstable surface (FOAM), greater ankle dorsiflexion angles were reported between participants with CAI and healthy controls. 13 Previous studies focused on the analysis of the lower limb…”

Section: O N L I N E F I R S Tmentioning

confidence: 99%

“…This study is a secondary analysis of a subcohort of participants from previous studies. 13,18 Participants who allowed their data to be kept in a database and used in other projects were included. As no previous study investigated the unilateral drop jump biomechanics on different challenging surfaces in healthy or injured participants, an a priori sample size calculation could not be performed.…”

Section: Participantsmentioning

confidence: 99%

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Lower Limb Biomechanics During Drop-Jump Landings on Challenging Surfaces in Individuals With Chronic Ankle Instability

Moisan

Mainville

Descarreaux

et al. 2022

Journal of Athletic Training

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Context: Individuals with chronic ankle instability (CAI) exhibit impaired lower limb biomechanics during unilateral drop jump landing on a flat surface. However, lower limb biomechanical adaptations during unilateral drop jump landing on more challenging surfaces such as unstable or inclined are yet to be described. Objective: Determine how unilateral drop jump landing surfaces (flat, unstable and inclined) influence lower limb EMG, kinematics and kinetics in individuals with CAI. Design: Descriptive laboratory study. Setting: Biomechanics laboratory. Patients or Other Participants: Twenty-two young adults with CAI Interventions: Participants completed five trials of unilateral drop jump landing from a 46 cm height platform on flat (DROP), unstable (FOAM) and laterally inclined (WEDGE) surfaces. Main outcome measure(s): EMG of gluteus medius, vastus lateralis, gastrocnemius medialis, peroneus longus and tibialis anterior muscles were recorded. Knee and ankle angles and moments were calculated using a three-dimensional motion analysis system and a force plate. Biomechanical variables were compared between tasks using one-dimensional statistical nonparametric mapping. Results: During DROP, greater ankle dorsiflexion angles, knee extension moments and vastus lateralis muscle activity (FOAM only) were observed compared to FOAM and WEDGE. Greater ankle inversion angles were observed during FOAM and WEDGE compared to DROP. Peroneus longus muscle activity was greater during DROP compared to FOAM. During FOAM, greater ankle inversion and knee extension angles, ankle inversion and internal rotation moments as well as smaller peroneus longus muscle activity were observed compared to WEDGE. Conclusions: The greater ankle inversion and plantarflexion angles as well as the lack of increase in peroneus longus muscle activation during FOAM and WEDGE could increase the risk of recurrent LAS in individuals with CAI. The results of this study improve our understanding of lower limb biomechanics changes when landing on more challenging surfaces and will help clinicians better targeting deficits associated with CAI during rehabilitation.

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