Abstract:
:To determine the contributions of neural and mechanical mechanisms to the limits in the range of motion (ROM) about a joint, we studied the effects of 30 sessions of static stretch training on the characteristics of the plantar-flexor muscles in 12 subjects. Changes in the maximal ankle dorsiflexion and the torque produced during passive stretching at various ankle angles, as well as maximal voluntary contraction (MVC) and electrically induced contractions, were recorded after 10, 20, and 30 sessions, and 1 month after the end of the training program. Reflex activities were tested by recording the Hoffmann reflex (H reflex) and tendon reflex (T reflex) in the soleus muscle. Training caused a 30.8% (P < 0.01) increase in the maximal ankle dorsiflexion. This improved flexibility was associated (r(2) = 0.88; P < 0.001) with a decrease in muscle passive stiffness and, after the first 10 sessions only, with a small increase in passive torque at maximal dorsiflexion. Furthermore, both the H- and T-reflex amplitudes were reduced after training, especially the latter (-36% vs. -14%; P < 0.05). The MVC torque and the maximal rate of torque development were not affected by training. Although the changes in flexibility and passive stiffness were partially maintained 1 month after the end of the training program, reflex activities had already returned to control levels. It is concluded that the increased flexibility results mainly from reduced passive stiffness of the muscle-tendon unit and tonic reflex activity. The underlying neural and mechanical adaptation mechanisms, however, showed different time courses.
journal_name
Muscle Nervejournal_title
Muscle & nerveauthors
Guissard N,Duchateau Jdoi
10.1002/mus.10549subject
Has Abstractpub_date
2004-02-01 00:00:00pages
248-55issue
2eissn
0148-639Xissn
1097-4598journal_volume
29pub_type
杂志文章相关文献
MUSCLE & NERVE文献大全abstract::Focal entrapment of the ulnar nerve occurs most frequently in the region of the elbow, at the ulnar groove or beneath the humeroulnar aponeurosis. Surgical treatment commonly involves transposition of the nerve anterior to the medial epicondyle, in the antecubital fossa. Symptoms may recur after surgery, and, to asses...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.20103
更新日期:2004-10-01 00:00:00
abstract::Nemaline myopathy is a rare disorder of varying severity and genetic etiology. We present two cases, a father and son, with a novel missense mutation in the alpha actin gene. Both have a history of early motor impairment, with the son's course being considerably more severe. This pair illustrates the clinical variabil...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.20662
更新日期:2007-02-01 00:00:00
abstract:INTRODUCTION:Posttraumatic elbow contracture is clinically challenging because injury often disrupts multiple periarticular soft tissues. Tissue specific contribution to contracture, particularly muscle, remains poorly understood. METHODS:In this study we used a previously developed animal model of elbow contracture. ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.26344
更新日期:2018-12-01 00:00:00
abstract::Inflammatory myopathies (IMs) occur relatively frequently in dogs, and, with the exception of masticatory muscle myositis (MMM), have not been characterized. This study analyzed the distribution and types of cellular infiltrates in 21 cases of generalized IM, 3 cases of focal IM (MMM), and 1 case with features of both...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.20043
更新日期:2004-06-01 00:00:00
abstract::We report a patient with clinical vermiform motor activity, muscle cramps, delayed relaxation of grip, and continuous motor unit discharges who developed mild symmetric symptoms in the upper extremities following a viral infection. Treatment with carbamazepine produced considerable symptomatic improvement. Needle elec...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880110310
更新日期:1988-03-01 00:00:00
abstract::Metabolic costs of force generation were compared for constant-frequency and catchlike-inducing electrical stimulation. Repetitive catchlike-inducing trains consisted of 2 interpulse intervals (IPIs) at 12.5 ms, 1 IPI at 25 ms, and 5 IPIs at 50 ms. Constant-frequency trains consisted of 8 IPIs at 37.5 ms. One train wa...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.10064
更新日期:2002-03-01 00:00:00
abstract::The clinical efficacy of functional electrical stimulation (FES) is limited by the rapid onset of fatigue. Functional electrical stimulation applications typically stimulate skeletal muscles with constant-frequency trains (CFTs). Our laboratory has identified trains that we call doublet-frequency trains (DFTs) and tha...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.20300
更新日期:2005-05-01 00:00:00
abstract::Nine patients with adult-onset acid maltase deficiency (Pompe's disease) were examined clinically and with computed tomography (CT). The CT scan showed early and severe involvement of the muscles of trunk and thighs, with selective sparing of the tensor fasciae latae, short head of biceps femoris, gracilis, and sartor...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(sici)1097-4598(199803)21:3<398::aid-mus15
更新日期:1998-03-01 00:00:00
abstract::The purpose of the present study was to establish the relationship between muscle architecture and H-reflex recordings in quadriceps femoris muscle. H-reflexes were elicited in human quadriceps femoris muscle over a broad area of skin to document the shape and amplitude of the H-potentials. This, in combination with r...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880170604
更新日期:1994-06-01 00:00:00
abstract:INTRODUCTION:The purposes of this study were to (1) develop a fatigue threshold based on electromyography (EMG) and heart rate (HR) responses for treadmill running from a single incremental test; and (2) propose a new fatigue threshold called the RV(EMGFT) and RV(HRFT). METHODS:Eleven men performed incremental treadmi...
journal_title:Muscle & nerve
pub_type: 临床试验,杂志文章
doi:10.1002/mus.23345
更新日期:2012-10-01 00:00:00
abstract::Dystrophic changes of Schwann cells and demyelination occurred in rats with chronic nerve edema induced by feeding a galactose-rich diet for two years. The mechanism for edema is the sorbitol pathway which generates osmotically active polyols from galactose or glucose. The blood-nerve barrier impedes diffusion of macr...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880060309
更新日期:1983-03-01 00:00:00
abstract:INTRODUCTION:We evaluated the contribution of denervation-related molecular processes to rotator cuff muscle degeneration after tendon release. METHODS:We assessed the levels of myogenic (myogenin and myogenic differentiation factor [myoD]) and proadipogenic (peroxisome proliferator-activated receptor γ) transcription...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.26316
更新日期:2019-01-01 00:00:00
abstract::The distinction between chronic demyelinating polyneuropathies associated with IgM paraproteinemia and anti-myelin-associated glycoprotein (MAG) antibodies (MAG-PN) and chronic inflammatory demyelinating polyneuropathies (CIDPs) relies on the anti-MAG antibodies assay. The aim of the study was to identify clinical and...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.20230
更新日期:2005-01-01 00:00:00
abstract:INTRODUCTION:We tested for the presence of erythropoietin receptor (Epo-R) in human skeletal muscle and alterations in gene expression after prolonged use of an erythropoiesis-stimulating agent (ESA). METHODS:Nine healthy men were treated with ESA for 10 weeks (darbepoietin alfa). Muscle biopsies were collected before...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.24355
更新日期:2015-04-01 00:00:00
abstract:INTRODUCTION:UDP N-acetylglucosamine2-epimerase/N-acetylmannosamine-kinase (GNE) gene mutations can cause mostly autosomal-recessive myopathy with juvenile-onset known as hereditary inclusion-body myopathy (HIBM). METHODS:We describe a family of a patient showing an unusual HIBM with both vacuolar myopathy and myositi...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.26486
更新日期:2019-07-01 00:00:00
abstract:INTRODUCTION:We investigated the viscoelastic stress relaxation response before and after a 10-week hamstrings static stretch program. METHODS:The maximal range of motion (ROMmax ) and maximal torque (Torquemax ) were assessed before and after a 10-week stretching program. Six 30-s static stretches at a predetermined ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.24593
更新日期:2015-05-01 00:00:00
abstract::Focal myositis is a rare inflammatory pseudotumor of skeletal muscle which usually has a benign course. We report a 56-year-old woman with a painful mass in the left arm with a radial nerve palsy. Magnetic resonance imaging (MRI) of the left arm showed a mass in the triceps muscle that was suggestive of a soft-tissue ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(sici)1097-4598(199907)22:7<956::aid-mus25
更新日期:1999-07-01 00:00:00
abstract::Injection of low-dose arachidonic acid into the rat femoral artery occludes the vasa nervorum of the tibial nerve and produces focal and generalized ischemia with transient effects on nerve conduction. Across a severely ischemic segment of the proximal tibial nerve there is a marked fall in amplitude of the compound m...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880090411
更新日期:1986-05-01 00:00:00
abstract::Human normal (RCMH) and Duchenne muscular dystrophy (RCDMD) cell lines, as well as newly developed normal and dystrophic murine cell lines, were used for the study of both changes in inositol 1,4,5-trisphosphate (IP3) mass and IP3 binding to receptors. Basal levels of IP3 were increased two- to threefold in dystrophic...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(sici)1097-4598(199807)21:7<902::aid-mus8>
更新日期:1998-07-01 00:00:00
abstract::In normal skeletal muscle, prolonged stimulation results in some cellular adenosine triphosphate (ATP) being converted to adenosine monophosphate (AMP) and then deaminated to inosine monophosphate (IMP). Here, we investigate whether the build-up of IMP contributes to muscle fatigue and also determine what happens if A...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(sici)1097-4598(199912)22:12<1674::aid-mus
更新日期:1999-12-01 00:00:00
abstract::Peripheral neuropathies are reported to arise as a result of the systemic inflammatory response produced by a full-thickness cutaneous burn injury. This study was designed to characterize the magnitude and time course of functional and morphological changes in peripheral axons that arise after a full-thickness dermal ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.20306
更新日期:2005-05-01 00:00:00
abstract::Chronic and acute administration of epinephrine or related sympathomimetic agents are typically prescribed for the treatment of clinical disorders such as hypotension, anaphylactic and allergic reactions, and bronchial asthma. In addition to its effects on these infirmaties and on carbohydrate metabolism, epinephrine ...
journal_title:Muscle & nerve
pub_type: 杂志文章,评审
doi:10.1002/mus.880121204
更新日期:1989-12-01 00:00:00
abstract::Implantation of normal muscle precursor cells (mpc) for treatment for inherited myopathies such as Duchenne muscular dystrophy is in clear need of improvement to become practicable, but few variables have been studied comparatively. Here, we report the first quantitative estimate of the effectiveness of implanting mpc...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4598(199602)19:2<132::AID-MUS2>
更新日期:1996-02-01 00:00:00
abstract::Three well-characterized antimyosin heavy chain monoclonal antibodies (McAbs) were used as immunocytochemical reagents to study myosin isoform expression in relationship to adenosine triphosphatase (ATPase) defined fiber types in human muscle. The biopsy specimens were from patients with neurogenic muscle disease whos...
journal_title:Muscle & nerve
pub_type: 杂志文章,评审
doi:10.1002/mus.880120809
更新日期:1989-08-01 00:00:00
abstract::A middle-aged male developed a right posterior femoral cutaneous neuralgia that persisted for 10 years without any associated neurologic, electrophysiologic, or radiologic findings. Five years after onset, surgical exploration of the subgluteal area identified a venous malformation surrounding the nerve. The syndrome ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880111106
更新日期:1988-11-01 00:00:00
abstract::Muscle fatigue or neuromuscular disease may result in central activation failure during maximal voluntary contractions (MVCs). Superimposition of an electrically stimulated contraction during an MVC has been used to detect central activation failure. To determine the most sensitive means of quantitating central activa...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4598(199607)19:7<861::AID-MUS8>
更新日期:1996-07-01 00:00:00
abstract:INTRODUCTION:We studied neurodevelopmental and behavioral/emotional symptoms in patients with Duchenne muscular dystrophy (DMD). METHODS:Retrospective case series of neurodevelopmental and behavioral/emotional symptoms obtained through review of systems of 700 DMD patients in relation to dystrophin gene mutations. RE...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.26803
更新日期:2020-04-01 00:00:00
abstract:INTRODUCTION:RASopathies are a group of genetic conditions due to alterations of the Ras/MAPK pathway. Neurocutaneous findings are hallmark features of the RASopathies, but musculoskeletal abnormalities are also frequent. The objective was to evaluate handgrip strength in the RASopathies. METHODS:Individuals with RASo...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.23324
更新日期:2012-09-01 00:00:00
abstract::In a woman with a slowly progressive adult onset proximal myopathy, muscle biopsy showed storage of PAS positive material in type 1 fibers. This material consisted of a branched chain polysaccharide associated with a mucoprotein. No abnormality of glycogen-pathway enzymes was detected. This suggested that this polysac...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880110411
更新日期:1988-04-01 00:00:00
abstract::Compound muscle action potentials (CMAPs) evoked by magnetic brain stimuli are larger if the subject provides a steady background voluntary contraction of the target muscle. This facilitation could be due either to cortical or spinal mechanisms, or both. Both magnetic and electrical stimuli given immediately after the...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4598(199608)19:8<953::AID-MUS3>
更新日期:1996-08-01 00:00:00