Publications by authors named "Eline Flux"

Article Synopsis
  • - Stretch hyperreflexia in children with spastic cerebral palsy (CP) is investigated to enhance their walking ability, leading to a study comparing muscle-tendon behavior during gait in CP children and typically developing (TD) peers.
  • - Three-dimensional gait analysis using electromyography (EMG) and dynamic ultrasound revealed that muscle activation and stretch patterns differ significantly between CP and TD children, with CP exhibiting much higher ratios of EMG to muscle stretch velocities and accelerations.
  • - The findings indicate that muscle activation during late swing in CP is influenced by the velocity of muscle-tendon stretch, while early stance activation is dependent on both velocity and acceleration, potentially guiding future therapeutic interventions.
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Background: Children with cerebral palsy often show deviating calf muscle activation patterns during gait, with excess activation during early stance and insufficient activation during push-off.

Research Question: Can children with cerebral palsy improve their calf muscle activation patterns during gait using one session of biofeedback-driven gaming?

Methods: Eighteen children (6-17 y) with spastic cerebral palsy received implicit game-based biofeedback on electromyographic activity of the calf muscle (soleus or gastrocnemius medialis) while walking on a treadmill during one session. Biofeedback alternately aimed to reduce early stance activity, increase push-off activity, and both combined.

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Background: Ultrasonography with motion analysis enables dynamic imaging of medial gastrocnemius (MG) muscles and tendons during gait. This revealed pathological muscle-tendon dynamics in children with spastic cerebral palsy (CP) compared to typically developing (TD) children. However, wearing an ultrasound probe on the lower leg could interfere with gait and bias muscle length changes observed with ultrasound.

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Background: Spasticity, i.e. stretch hyperreflexia, increases joint resistance similar to symptoms like hypertonia and contractures.

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Background: As hyperactive muscle stretch reflexes hinder movement in patients with central nervous system disorders, they are a common target of treatment. To improve treatment evaluation, hyperactive reflexes should be assessed during activities as walking rather than passively. This study systematically explores the feasibility, reliability and validity of sudden treadmill perturbations to evoke and quantify calf muscle stretch reflexes during walking in children with neurological disorders.

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