Results 1 to 10 of about 263 (70)

Revising the stretch reflex threshold method to measure stretch hyperreflexia in cerebral palsy

Frontiers in Bioengineering and Biotechnology, 2022
Hyper-resistance is an increased resistance to passive muscle stretch, a common feature in neurological disorders. Stretch hyperreflexia, an exaggerated stretch reflex response, is the neural velocity-dependent component of hyper-resistance, and has been
Pedro Valadão, Lynn Bar-On, Lynn Bar-On, Francesco Cenni, Harri Piitulainen, Harri Piitulainen, Harri Piitulainen, Janne Avela, Taija Finni   +8 more
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Changes in Spinal-Reflex Excitability during Static Stretch and/or Explosive Contraction

Applied Sciences, 2021
To examine individual or combined effects of static stretch and explosive contraction on quadriceps spinal-reflex excitability (the peak Hoffmann’s reflex normalized by the peak motor-response) and the latency times of the Hoffmann’s reflex and motor ...
Kyeong Eun Min, YongSuk Lee, Jihong Park
doaj   +1 more source

Effects of static stretching on active muscle stiffness with and without the stretch reflex

Journal of Physical Fitness and Sports Medicine, 2020
The purpose of the present study was to examine acute changes in active muscle stiffness with and without the stretch reflex following static stretching.
Takayuki Suzuki, Kazuki Sugawara, Yojiro Iizuka, Keitaro Kubo   +3 more
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Impact of Voluntary Muscle Activation on Stretch Reflex Excitability in Individuals With Hemiparetic Stroke

Frontiers in Neurology, 2022
ObjectiveTo characterize how, following a stretch-induced attenuation, volitional muscle activation impacts stretch reflex activity in individuals with stroke.MethodsA robotic device rotated the paretic elbow of individuals with hemiparetic stroke from ...
Jacqueline R. Patterson, Jacqueline R. Patterson, Jacqueline R. Patterson, Julius P. A. Dewald, Julius P. A. Dewald, Julius P. A. Dewald, Justin M. Drogos, Netta Gurari, Netta Gurari, Netta Gurari   +9 more
doaj   +1 more source

Significantly Delayed Medium-Latency Response of the Stretch Reflex in Delayed-Onset Muscle Soreness of the Quadriceps Femoris Muscles Is Indicative of Sensory Neuronal Microdamage

Journal of Functional Morphology and Kinesiology, 2022
Unaccustomed or strenuous eccentric exercise is known to cause delayed-onset muscle soreness. A recent hypothesis postulated that mechano-energetic microinjury of the primary afferent sensory neuron terminals in the muscle spindles, namely a transient ...
Balázs Sonkodi, Ádám Hegedűs, Bence Kopper, István Berkes   +3 more
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A Velocity Stretch Reflex Threshold Based on Muscle–Tendon Unit Peak Acceleration to Detect Possible Occurrences of Spasticity during Gait in Children with Cerebral Palsy

Sensors, 2023
Spasticity might affect gait in children with cerebral palsy. Quantifying its occurrence during locomotion is challenging. One approach is to determine kinematic stretch reflex thresholds, usually on the velocity, during passive assessment and to search ...
Axel Koussou, Raphaël Dumas, Eric Desailly   +2 more
doaj   +1 more source

Visually-updated hand state estimates modulate the proprioceptive reflex independently of motor task requirements

eLife, 2020
Fast signaling from vision and proprioception to muscle activation plays essential roles in quickly correcting movement. Though many studies have demonstrated modulation of the quick sensorimotor responses as depending on context in each modality, the ...
Sho Ito, Hiroaki Gomi
doaj   +1 more source

Evidence for Muscle Cell-Based Mechanisms of Enhanced Performance in Stretch-Shortening Cycle in Skeletal Muscle

Frontiers in Physiology, 2021
Force attained during concentric contraction (active shortening) is transiently enhanced following eccentric contraction (active stretch) in skeletal muscle. This phenomenon is called stretch-shortening cycle (SSC) effect.
Atsuki Fukutani, Atsuki Fukutani, Tadao Isaka, Walter Herzog   +3 more
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The stretch reflex and the contributions of C David Marsden

Annals of Indian Academy of Neurology, 2017
The stretch reflex or myotatic reflex refers to the contraction of a muscle in response to its passive stretching by increasing its contractility as long as the stretch is within physiological limits.
Kalyan B Bhattacharyya
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Enhancing postural stability in a musculoskeletal hopping robot through stretch reflex application on biarticular thigh muscles

Frontiers in Robotics and AI, 2023
Postural stabilization during rapid and powerful hopping actions represents a significant challenge for legged robotics. One strategy utilized by humans to negotiate this difficulty is the robust activation of biarticular thigh muscles.
Ryu Takahashi, Yuki Murakami, Koh Hosoda, Koh Hosoda   +3 more
doaj   +1 more source