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Ankle Dorsiflexion Affects Hip and Knee Biomechanics During Landing.

Published in Sports health

Restricted ankle dorsiflexion range of motion (DFROM) has been linked to lower extremity biomechanics that place an athlete at higher risk for injury. Whether reduced DFROM during dynamic movements is due to restrictions in joint motion or underutilization of available ankle DFROM motion is unclear. We hypothesized that both lesser total ankle DFRO...

Time for action: neural basis of the costs and benefits of temporal predictability for competing response choices

The brain can anticipate the time of imminent events to optimise sensorimotor processing. Yet, there can be behavioural costs of temporal predictability under situations of response conflict. Here, we sought to identify the neural basis of these costs and benefits by examining motor control processes in a combined EEG-EMG study. We recorded electro...

Are Sub-Movements Induced Visually in Discrete Aiming Tasks?

Published in Journal of motor behavior

There is a long-held view that discrete movements aimed to a target are composed of a sequence of movement units (sub-movements) that have different roles in motor control (e.g., initial impulse, error correction and movement termination) depending on the task constraints (e.g., spatial-temporal requirements). Here we report findings from the manip...

Perceived effort for reaching is associated with self-reported fatigue.

Published in Journal of motor behavior

Perceived effort for goal-directed reaching may be impacted by the level of self-reported fatigue, however, the relationship between self-reported fatigue and perceived effort has not been examined. We examined how perceived effort changed under varied reach conditions and the relationship between fatigue, perceived effort and reach performance. Tw...

Temporal features of goal-directed movements change with source, but not frequency, of rhythmic auditory stimuli.

Published in Journal of motor behavior

Music and metronomes differentially impact movement performance. The current experiment presented metronome and drum beats in simple and complex rhythms before goal-directed reaching movements, while also quantifying enjoyment. Auditory conditions were completed with and without visual feedback and were blocked and counterbalanced. There were no di...

Reliability and Validity of the Turkish Version of the Selective Control of the Upper Extremity Scale in Children with C...

Published in Physical & occupational therapy in pediatrics

To investigate the psychometric properties of the Selective Control of the Upper Extremity Scale (SCUES). Fifty-two children (27 females and 25 males; mean age 9.8 ± 4.4 years) with spastic type of cerebral palsy (CP) participated in the study. Psychometric analyses included reliability, concurrent validity, construct validity, and discriminant val...

Interaction between orthographic and graphomotor constraints in learning to write

We investigated the combined effects of orthographic and graphomotor constraints as a function of handwriting proficiency in children. Twenty-four first graders, 20 third graders, and 21 fifth graders wrote single five-letter words in cursive writing on a sheet of paper affixed to a digitizing tablet. The words were chosen according to two orthogra...

Scaling of Joint Motion and Muscle Activation for 3-Dimensional Control of Reach Extent.

Published in Journal of motor behavior

This study investigated the scaling of upper arm kinematics, joint motion, and muscle activation for three-dimensional (3D) reaches to targets of increasing distance. Fifteen participants completed 108 total reaches to targets placed 7, 14, and 21 cm across midline. Peak velocity, acceleration, and time to peak velocity scaled to both target and mo...