OBJECTIVE: Arthrogenic muscle inhibition (AMI) is a presynaptic, ongoing reflex inhibition of joint musculature after distension or damage to the joint. The extent to which therapeutic interventions affect AMI is unknown. The purpose of this study was to verify that the vastus medialis (VM) is inhibited using the knee joint effusion model and to investigate the effects of cryotherapy and transc...

The Hoffmann reflex is a monosynaptic reflex elicited by electrical stimulation of afferent nerve fibres. The amplitude of the reflex response may be measured both by EMG recording from the muscle and by sensing the muscle twitch. These two effects are dependent, not only on the amplitude of the stimulus, but on the state of excitability of the afferent-efferent synaptic pools and on the mechan...

Transforaminal epidural steroid injection (TFESI) is a recognized nonsurgical management of radicular back pain through its effects on neural inflammation and edema [1]. Electrodiagnostic changes of the compressed nerve root such as Hoffmann reflex (H-reflex) are apparent within days following injury and persist throughout nerve compression [2], with sensitivity and specificity of 50% and 91%, ...

Measurement of the Hoffmann reflex (H-reflex) provides an estimate of alpha motoneuron activity in the target motoneuron (MN) pool. The H-reflex has been assessed for a wide variety of reasons in neuroscience research. However, the majority of protocols have focused on the assessment of only one muscle and its corresponding motoneuron pool at any instant. Previously established protocols do not...

1 proximal upper limb post-stroke 2 3 Gilles Hoffmann, Derek G. Kamper, Jennifer H. Kahn, William Z. Rymer and Brian D. 4 Schmit 5 6 Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, Illinois 7 Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, Illinois 8 Department of Physiology, Feinberg School of Medicine, Northwestern University, ...

spasticity is one of the common complications in upper motor neuron lesions and without appropriate treatment it causes disturbances in movement pattern. assessments of patients are effective in patient`s management. modified ashworth scale (mas) is one of the criteria in qualitative assessment of spasticity, and there are lots of controversies about its validity. the purpose of this study is t...

Lateral asymmetry of the Hoffmann reflex (H-reflex) recovery curve was found in seven subjects with no personal or family history of neurological or psychiatric disorder. Differences between recovery curves from the right and left leg were larger than differences in the same leg on two successive test days. In a group of 27 psychiatric inpatients, lateral asymmetry of the later portion of the r...

CONTEXT Irvin M. Korr, PhD, hypothesized that sensitivity of the monosynaptic stretch reflex (ie, deep tendon reflex) plays a major role in the restriction-of-motion characteristic of somatic dysfunction, and that restoration of range of motion through osteopathic manipulative treatment (OMT) could be achieved by resetting of the stretch receptor gain. OBJECTIVE To test Korr's hypothesis in t...