Abstract:
:It has been suggested that vibration causes small changes in muscle length, but to the best of our knowledge, these have yet to be demonstrated during whole-body vibration (WBV). This was an observational study to determine whether acute WBV would result in muscle lengthening. We hypothesized that acute WBV would increase electromyography (EMG) activity concurrently with measurable changes in muscle contractile length. Nine healthy males performed two conditions on a Galileo vibration machine for 15 s at 0 HZ (resting) and 6 HZ at a set knee angle of 18 degrees. Muscle tendon complex length, contractile tissue displacement of the medial gastrocnemius muscle, and EMG of soleus, tibialis anterior, and vastus lateralis muscles were measured. At 6 HZ the medial gastrocnemius (MG) muscle tendon complex (MTC) amplitude (375 microm) was significantly greater (P < 0.05) compared to 0 HZ (35 microm). The MG contractile length (CD) amplitude at 6 HZ (176 microm) was significantly greater (P < 0.01) compared to 0 HZ (4 microm). Significant increases (P < 0.05) in EMG modulation were found for all muscles during the 6 HZ compared to the 0 HZ condition. The major finding was that approximately 50% of the elongation occurred within the muscle itself and was associated with preceding changes in EMG. This indicates muscle lengthening may be a prerequisite for eliciting stretch reflexes. In conclusion, there is a temporal association between EMG activity and muscle contractile tissue displacement where low-frequency WBV results in small muscle length changes and increases muscle activation.
journal_name
Muscle Nervejournal_title
Muscle & nerveauthors
Cochrane DJ,Loram ID,Stannard SR,Rittweger Jdoi
10.1002/mus.21330subject
Has Abstractpub_date
2009-09-01 00:00:00pages
420-9issue
3eissn
0148-639Xissn
1097-4598journal_volume
40pub_type
杂志文章相关文献
MUSCLE & NERVE文献大全abstract:INTRODUCTION:The aim of this work was to determine the effect of chronic alcohol exposure on peripheral nerves in a nutritionally balanced rat model of alcoholism. METHODS:Three different strains of adult male rats were pair-fed for 8 weeks with isocaloric liquid diets containing 0% or 37% ethanol. Nerve conduction st...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.23744
更新日期:2013-08-01 00:00:00
abstract:INTRODUCTION:The distribution of clinical and neurophysiological abnormalities in patients with early amyotrophic lateral sclerosis (ALS) was investigated in an attempt to delineate patterns of disease spread. METHODS:Clinical and electrodiagnostic data were collected from 150 ALS patients and analyzed based on the cl...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.24244
更新日期:2014-12-01 00:00:00
abstract:INTRODUCTION:Few data are available to quantify the risks and benefits of microvascular decompression (MVD) in elderly patients with hemifacial spasm. METHODS:Twenty-seven patients >65 years of age and 104 younger patients who underwent MVD for hemifacial spasm (HFS) over a 3-year period were analyzed retrospectively ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.23800
更新日期:2013-11-01 00:00:00
abstract::An appreciation of the comparative functions of the corticospinal tract is of direct relevance to the understanding of how results from animal models can advance knowledge of the human motor system and its disorders. Two critical functions of the corticospinal tract are discussed: first, the role of descending project...
journal_title:Muscle & nerve
pub_type: 杂志文章,评审
doi:10.1002/mus.20333
更新日期:2005-09-01 00:00:00
abstract::The intramembrane particle (IMP) profile of control and dystrophic (Bio 14.6) hamster cardiac muscle plasma membrane was assessed in freeze-fracture replicas to determine whether this animal model of muscular dystrophy exhibits the same membrane characteristics found in skeletal muscle from other more thoroughly studi...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880070702
更新日期:1984-09-01 00:00:00
abstract::The influence of the recording site on the motor unit potentials (MUPs) was investigated in the brachial biceps muscle of 8 healthy subjects. The MUPs were recorded with a concentric needle electrode and analyzed with a new decomposition EMG program we call multi-MUP analysis. MUPs had shorter durations and smaller am...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880181207
更新日期:1995-12-01 00:00:00
abstract::On magnetic resonance (MR) imaging of the brachial plexus increased signal intensity and swelling of the brachial plexus has been found in chronic inflammatory demyelinating polyneuropathy (CIDP). Whether these proximal abnormalities are also present in the distal polyneuropathy associated with monoclonal gammopathy i...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.1149
更新日期:2001-10-01 00:00:00
abstract:INTRODUCTION:Phospholipids are essential components of cellular membranes and are closely associated with cellular functions, but relationships involving skeletal muscle phospholipid profiles and their physiological phenotypes have remained unclear. METHODS:We carried out comprehensive phospholipid analyses using liqu...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.26993
更新日期:2020-09-01 00:00:00
abstract::Several monoclonal antibodies (mcAbs) elicited against the nicotinic acetylcholine receptor (AChR) from Torpedo react also with skeletal muscle AChR. Such mcAbs were used to define antigenic determinants on muscle AChR and to elucidate their effect on muscle AChR functions. Primary chick muscle cultures were used as a...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880060410
更新日期:1983-05-01 00:00:00
abstract::Myophosphorylase deficiency (McArdle's disease) may present with episodic renal failure following exertion. We present a case of adult-onset myophosphorylase deficiency in which recurrent bouts of renal failure could not be associated with any exertional events until a tonic seizure was witnessed after the fourth epis...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.10463
更新日期:2003-11-01 00:00:00
abstract:INTRODUCTION:The aim of this study was to evaluate the ultrasound (US) morphological changes of sural nerves (SNs) of uremic patients on hemodialysis. METHODS:Sixty-six SNs in 33 uremic patients were examined by 22-MHZ high-frequency US and routine nerve conduction studies (NCS), and 76 SNs in 38 controls were also ex...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.23418
更新日期:2012-12-01 00:00:00
abstract::We studied histopathological changes in the biceps brachii muscle in relation to age and the degree of muscle weakness in 64 patients (aged 11-59 years) with myotonic dystrophy. The proportion of type 1 fibers was unaltered in the adolescent patients compared with control values, but increased with age. The average di...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880170911
更新日期:1994-09-01 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:INTRODUCTION:In this study we investigated the interaction between adipose tissue-derived stem cells (ASCs) and myoblasts in co-culture experiments. METHODS:Specific inductive media were used to differentiate ASCs in vitro into a Schwann cell-like phenotype (differentiated adipose tissue-derived stem cells, or dASCs) ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.25741
更新日期:2018-02-01 00:00:00
abstract::Motor unit (MU) number and size estimates were obtained from the human flexor digiti minimi muscle using histological methods. Ten adult fresh cadavers (33-74 years old) were used. The number of MUs was 130 +/- 15 and the MU size was 108 +/- 10. These values are similar to those reported for other hypothenar muscles, ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(sici)1097-4598(199801)21:1<112::aid-mus14
更新日期:1998-01-01 00:00:00
abstract::Muscle of donor origin was formed after implantation of H-2Kb-tsA58 muscle precursor cells (mpc) into irradiated mdx nu/nu mouse muscles. A series of injections of the myotoxin, notexin, which destroys mature muscle fibers but spares muscle precursor cells and other tissues, was made into the mpc-injected muscles, lea...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(sici)1097-4598(199902)22:2<174::aid-mus5>
更新日期:1999-02-01 00:00:00
abstract::Bariatric surgical procedures are increasingly common. In this review, we characterize the neurologic complications of such procedures, including their mechanisms, frequency, and prognosis. Literature review yielded 50 case reports of 96 patients with neurologic symptoms after bariatric procedures. The most common pre...
journal_title:Muscle & nerve
pub_type: 杂志文章,评审
doi:10.1002/mus.20394
更新日期:2006-02-01 00:00:00
abstract::Data are scarce relating to the plasticity with strength training of dynamic muscle performance in older humans. Hence, we investigated alterations in the torque-velocity relation with strength training in old age, and their origin. Knee extension and leg-press exercises were performed three times per week for 14 week...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.20275
更新日期:2005-03-01 00:00:00
abstract:INTRODUCTION:We sought to determine which muscles to choose for better assessment of the craniobulbar region in establishing the diagnosis of amyotrophic lateral sclerosis (ALS). METHODS:We studied the frontalis muscle in 83 controls and compared it with the tongue, sternocleidomastoid (SCM), and trapezius muscles in ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.25236
更新日期:2016-12-01 00:00:00
abstract:INTRODUCTION:In this study, we determined normal levels of dysferlin expression in CD14+ monocytes by flow cytometry (FC) as a screening tool for dysferlinopathies. METHODS:Monocytes from 183 healthy individuals and 29 patients were immunolabeled, run on an FACScalibur flow cytometer, and analyzed by FlowJo software. ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.25156
更新日期:2016-12-01 00:00:00
abstract:INTRODUCTION:Twenty-six patients with clinical symptoms of adult onset carnitine palmitoyltransferase II (CPTII) deficiency were examined. All patients had skeletal muscle CPTII enzyme activity levels indicative of heterozygosity for CPT2 mutations, however sequence analysis identified no pathogenic mutations within th...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.23498
更新日期:2013-02-01 00:00:00
abstract::Neuromuscular recovery after peripheral nerve lesion depends on the regeneration of severed axons that re-establish their functional connection with the denervated muscle. The aim of this study was to determine the effects of electrical stimulation (ES) on the neuromuscular recovery after nerve crush injury in rats. E...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.21549
更新日期:2010-05-01 00:00:00
abstract:INTRODUCTION:In this study, we questioned whether local cooling of muscle or heating involving core and muscle temperatures are the main indicators for force variability. METHODS:Ten volunteers performed a 2-min maximum voluntary contraction (MVC) of the knee extensors under control (CON) conditions after passive heat...
journal_title:Muscle & nerve
pub_type: 杂志文章,随机对照试验
doi:10.1002/mus.23397
更新日期:2012-11-01 00:00:00
abstract:INTRODUCTION:The aim of this study was to assess age- and gender-specific incidence rates (IRs) of acetylcholine receptor (AChR)-antibody-positive myasthenia gravis (MG) in South Africa, and geographical variations in incidence. METHODS:IRs were calculated from positive AChR-antibody laboratory data between 2011 and 2...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.24348
更新日期:2015-04-01 00:00:00
abstract::Eleven patients with previous polio were studied. The concentration of energy-related metabolites and energy charge was measured from the vastus lateralis muscle, as was isometric muscle strength of knee extension. Cross-sectional area of the quadriceps femoris muscle was calculated from magnetic resonance imaging. Re...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(sici)1097-4598(199711)20:11<1341::aid-mus
更新日期:1997-11-01 00:00:00
abstract:INTRODUCTION:In Duchenne muscular dystrophy (DMD), fat replacement of muscle may be a useful endpoint in trials of therapy, although progression in different muscle groups is uneven. In this study we assessed the progression of fat replacement with T(1) -weighted imaging over 2 9-month periods. METHODS:Eight ambulant,...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.23879
更新日期:2013-10-01 00:00:00
abstract::Of 185 patients with myopathy, 22 showed abnormal muscle mitochondria. In 12 of the 22 patients, all of whom had ocular myopathy or the ophthalmoplegia-plus syndrome, muscle biopsies contained 5%-25% "ragged red" fibers. In 4 patients with a facioscapulohumeral distribution of weakness, ragged red fibers were less num...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880010513
更新日期:1978-09-01 00:00:00
abstract:INTRODUCTION:We sought to compare median nerve elasticity between leprosy patients (LPs) and healthy volunteers (HVs) using ultrasound elastography (UE). METHODS:Two radiologists independently measured the strain ratio of the median nerve/flexor digitorum superficialis muscle (MN/FDSM) of 18 LP and 18 HV using real-ti...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.25510
更新日期:2017-09-01 00:00:00
abstract::Cerebral palsy (CP) is the most prevalent neurologic disease in children and a leading cause of severe physical disability. Research and clinical experience indicate that children with CP have abnormal neuromuscular junctions (NMJs), and we present evidence that nonapposition of neuromuscular junction components is as...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.20401
更新日期:2005-11-01 00:00:00
abstract::Peripheral nerve disorders are commonly encountered in clinical practice. Electrodiagnostic studies remain the cornerstone of the evaluation of nerve disorders. More recently, ultrasound has played an increasing complementary role in the neuromuscular clinic. Ultrasound elastography is a technique that measures the el...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.26624
更新日期:2019-11-01 00:00:00