Document Detail


The impact of damaging exercise on electromechanical delay in biceps brachii.
MedLine Citation:
PMID:  20060744     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Electromechanical delay (EMD) can be a useful tool in providing information on muscle function changes following a number of exercise interventions. The purpose of this investigation was to examine the effect of damaging exercise on EMD. Twelve volunteers completed 45 maximal lengthening contractions of the elbow flexors. Indices of muscle damage (maximum voluntary isometric torque and isokinetic torque (60s(-1) and 210 s(-1)), creatine kinase (CK), muscle soreness (DOMS)) were recorded pre-exercise, 48 h and 96 h post-exercise; electromyography was recorded from the belly of biceps brachii and EMD was determined during each contraction condition. Significant time effects were observed for all damage indices (P<0.05). Whilst muscle function was close to full recovery at 96 h, both CK and DOMS were significantly (P<0.001) elevated above baseline. EMD was significantly greater at 96 h for all contraction conditions (P0<or=0.017), but not at 48 h. Damaging exercise induces alterations in EMD beyond the apparent recovery of maximal voluntary contractions, which is likely to be a reflection of the changes in post-synaptic events. These data have applications for the use of EMD as a tool for exercise prescription and monitoring recovery following strenuous damaging exercise.
Authors:
Glyn Howatson
Related Documents :
3220064 - Benefits of short-term muscular training in reducing the effects of muscular over-exert...
8941534 - Effect of leucine metabolite beta-hydroxy-beta-methylbutyrate on muscle metabolism duri...
9663954 - Comparison of eccentric knee extensor muscle actions at two muscle lengths on indices o...
10879444 - Cytokines and cell adhesion molecules associated with high-intensity eccentric exercise.
8133244 - Effect of basolateral co2/hco3- on intracellular ph regulation in the rabbit s3 proxima...
1693204 - Comparison of low rate dual chamber pacing to activity responsive rate variable ventric...
Publication Detail:
Type:  Journal Article     Date:  2010-01-08
Journal Detail:
Title:  Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology     Volume:  20     ISSN:  1873-5711     ISO Abbreviation:  J Electromyogr Kinesiol     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-03-23     Completed Date:  2010-06-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9109125     Medline TA:  J Electromyogr Kinesiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  477-81     Citation Subset:  IM    
Copyright Information:
(c) 2009. Published by Elsevier Ltd.
Affiliation:
School of Psychology and Sport Sciences, Northumbria University, Newcastle, UK. glyn.howatson@northumbria.ac.uk
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Creatine Kinase / metabolism*
Cumulative Trauma Disorders / physiopathology*
Humans
Male
Muscle Contraction*
Muscle Strength*
Muscle, Skeletal / physiopathology*
Physical Exertion*
Chemical
Reg. No./Substance:
EC 2.7.3.2/Creatine Kinase

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  A tuning method for electrically compensated ion cyclotron resonance mass spectrometer traps.
Next Document:  Brain states and hypnosis research.