A5085030140- Muscle activation and electromyography studies
- Musculoskeletal pain and rehabilitation
- Motor Control and Adaptation
- Spine and Intervertebral Disc Pathology
- Sports Performance and Training
- Balance, Gait, and Falls Prevention
- Stroke Rehabilitation and Recovery
- Sports injuries and prevention
- Lower Extremity Biomechanics and Pathologies
- Myofascial pain diagnosis and treatment
- Advanced Sensor and Energy Harvesting Materials
- Cerebral Palsy and Movement Disorders
- Pain Mechanisms and Treatments
- Transcranial Magnetic Stimulation Studies
- Traumatic Brain Injury Research
- Shoulder Injury and Treatment
- Clinical practice guidelines implementation
- Delphi Technique in Research
- Foot and Ankle Surgery
- EEG and Brain-Computer Interfaces
- Orthopedic Surgery and Rehabilitation
- Knee injuries and reconstruction techniques
- Vestibular and auditory disorders
- Migraine and Headache Studies
- Occupational health in dentistry
University of Birmingham
2019-2025
University of British Columbia
2015-2021
Polytechnic University of Turin
2011-2019
In this study we investigated whether the spatial distribution of surface electromyographic (EMG) amplitude can be used to describe activation muscle portions with different biomechanical actions. Ten healthy subjects performed isometric contractions aimed selectively activate a number forearm muscles or subportions. Monopolar signals were collected an electrode grid 128 electrodes placed on proximal, dorsal portion forearm. The monopolar EMG (root mean square value) was calculated for each...
The aim of this study was to determine whether muscle fibers innervated by single motor neurons are confined in small subvolumes the vastus medialis (VM) and if unit fiber orientation depends on their position within muscle.Single units were identified from a grid surface electrodes. size representation extracted using an algorithm validated simulated signals.The action potentials 77 represented locally skin (10th-90th percentiles: 14-25 mm). According simulations, indicates territories...
We investigated the vestibular control of deep and superficial lumbar extensor muscles using electrical stimuli. Vestibular stimuli elicited preferential activation longissimus muscle over multifidus muscle. did not observe clear regional subregions in response to Our findings show that central nervous system can finely tune individual suggest minimal variations subregions.
Abstract Introduction When performing an exercise or a functional test, pain that is evoked by movement muscle contraction could be stronger stimulus for changing how individuals move compared to tonic pain. We investigated whether the decrease in force production larger when experimentally‐induced knee directly associated torque produced (movement‐evoked) constant painful stimulation (tonic). Methods Twenty‐one participants performed three isometric extension maximal voluntary contractions...
The aim of this study was to investigate the position innervation zone (IZ) vastus medialis (VM) and its effect on electromyographic (EMG) amplitude mean frequency estimates. Eighteen healthy subjects performed maximal isometric knee extensions at three angles. Surface EMG signals were collected by using a 16 × 8 electrode grid placed VM muscle. IZ estimated through visual analysis, traditional bipolar obtained from channels over away it; values extracted compared an analysis variance...
Movement control tests (MCTs) are clinical to evaluate impairment of movement and associated neuromuscular commonly used people with neck pain or headache conditions. The aim this study was establish inter-rater reliability as well discriminatory predictive validity for seven MCTs the upper (UCS) lower cervical spine (LCS) in office workers pain.Seven UCS (3) LCS (4) were performed at baseline on 140 which included a cluster randomized controlled trial. occurrences established...
Regionalization of the stretch reflex, i.e. notion that activation 1a afferents from a muscle region influences only motor units in same region, has been demonstrated previously animals but not humans. Mechanical stretches applied to regions vastus medialis as close 10 mm apart resulted recruitment localized topographically with respect location mechanical stretch. Stretch reflexes are regionalized human medialis. The spinal cord neuromuscular circuitry preferentially activate motoneurones...
Abstract Movement is changed in pain, but the mechanisms remain unclear. Key questions are unresolved such as whether activation can be inhomogeneously distributed within a muscle manner that specific to location of noxious input. This study addressed this question using high-density electromyography (EMG) regional redistribution vasti muscles and changes knee extension force direction response stimulation applied muscular nonmuscular tissues around knee. Fourteen participants performed...
The objective of this study was to determine whether motor evoked potentials (MEPs) elicited with transcranial magnetic stimulation and measured conventional bipolar electromyography (EMG) are influenced by crosstalk from non-target muscles.MEPs were recorded in healthy participants using EMG electrodes placed over the extensor carpi radialis muscle (ECR) high-density surface (HDsEMG). Fifty MEPs at 120% resting active threshold recorded. To contribution ECR MEPs, amplitude distribution...
This study examined the contribution of muscle fiber orientation at different knee angles to regional activation identified with high-density surface electromyography (HDsEMG). Monopolar HDsEMG signals were collected using a grid 13 × 5 electrodes placed over vastus medialis (VM). Intramuscular electrical stimulation was used selectively activate two regions within VM. The distribution EMG responses obtained by calculating amplitude compound action potential for each channel; position peak...
Motor adaptation is thought to be a strategy avoid pain. Current experimental pain models do not allow for consistent modulation of perception depending on movement. We showed that low-frequency sinusoidal stimuli delivered at painful intensity result in minimal habituation (over 60 s) and stimulation artefacts electromyographic signals. When the amplitude was modulated based vertical force participants applied ground with their right leg while standing upright, we demonstrated strong...
To determine if measures of cervical kinematics are altered in people with acute whiplash associated disorders (WAD) and secondarily, to examine whether kinematic variables self-reported outcomes.We recruited WAD within 15 days after a motor vehicle collision asymptomatic control participants. All participants performed active neck movements at self-determined velocity. Maximal range motion (ROM), peak mean velocity movement, smoothness joint position error were assessed. Moreover, perceived...