|Appears in Collections:||Faculty of Health Sciences and Sport Journal Articles|
|Peer Review Status:||Refereed|
|Title:||Surface EMG characteristics of people with multiple sclerosis during static contractions of the knee extensors|
|Author(s):||Scott, Sasha Margaret|
Hughes, Adrienne R
Galloway, S D
|Keywords:||maximal voluntary contraction|
|Citation:||Scott SM, Hughes AR, Galloway SD & Hunter A (2011) Surface EMG characteristics of people with multiple sclerosis during static contractions of the knee extensors, Clinical Physiology and Functional Imaging, 31 (1), pp. 11-17.|
|Abstract:||Objectives: This study was designed to determine whether any alterations existed in surface electromyography (sEMG) in people with multiple sclerosis (MS) during isometric contractions of the knee extensors. Methods: Fifteen people with MS and 14 matched controls (mean ± SD age and body mass index 53Æ7 ± 10Æ5 versus 54Æ6 ± 9Æ6 years and 27Æ7 ± 6Æ1 versus 26Æ5 ± 4, respectively) completed 20%, 40%, 60% and 80% of their maximal voluntary contraction (MVC) of the knee extensors. sEMG was recorded from the vastus lateralis where muscle fibre conduction velocity (MFCV) and sEMG amplitude (RMS) were assessed. Body composition was determined using dual-energy X-ray absorptiometry and physical activity with the use of accelerometry. Results: People with MS showed significantly (P < 0Æ05) faster MFCV during MVC (6Æ6 ± 2Æ7 versus 4Æ7 ± 1Æ4 m s)1) and all submaximal contractions, while RMS was significantly (P < 0Æ05) less (0Æ11 ± 0Æ03 versus 0Æ24 ± 0Æ06 mV) in compar- ison with the controls. MVC along with specific thigh lean mass to torque, rate of force development and mean physical activity were significantly (P < 0Æ01) less in PwMS. Conclusion: People with MS have elevated MFCV alongside reduced RMS during isometric contraction. This elevation in MFCV should be accounted for when interpreting sEMG from people with MS.|
|Rights:||The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study.|
|Surface EMG characteristics of people with multiple sclerosis.pdf||206.52 kB||Adobe PDF||Under Permanent Embargo Request a copy|
|cpf_9721.pdf||554.3 kB||Adobe PDF||Under Permanent Embargo Request a copy|
Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependent on the depositor still being contactable at their original email address.
This item is protected by original copyright
Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
If you believe that any material held in STORRE infringes copyright, please contact email@example.com providing details and we will remove the Work from public display in STORRE and investigate your claim.