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dc.contributor.authorHunter, Angusen_UK
dc.contributor.authorGibson, Alan St Clairen_UK
dc.contributor.authorLambert, Michaelen_UK
dc.contributor.authorDennis, Stephen Cen_UK
dc.contributor.authorMullany, Hughen_UK
dc.contributor.authorO'Malley, Mark Jen_UK
dc.contributor.authorVaughan, Christopher Len_UK
dc.contributor.authorKay, Dereken_UK
dc.contributor.authorNoakes, Timothy Den_UK
dc.description.abstractThis study analysed the effect of different electromyographic (EMG) capture rates during maximal voluntary contraction, submaximal and maximal dynamic cycling activity on EMG amplitude and signal characteristics. Ten healthy subjects participated in this study. Peak power output (PPO) and maximal isometric force output (MVC) were measured, followed by a progressive cycle ride on a cycle ergometer. Electromyographic (EMG) data were simultaneously captured during the MVC and cycling activities at frequencies of 32, 64, 128, 256, 512, 1024 and 1984 Hz. Significant differences in amplitude were found (p < 0.01) between MVC, submaximal (SUB) and maximal cycling activities (PWATT) for all capture rates. Asymptote values for IEMG amplitude occurred at EMG capture rates of 1604 ± 235.6 Hz during MVC, 503.1 ± 236.2 Hz during PWATT and 326.2 ± 105.4 Hz during SUB cycling activity and were significantly different (p < 0.01). No significant differences were found for force/EMG ratios between PWATT and MVC at 1984 Hz capture rates (3.8 ± 1.7 N/V vs 2.5 ± 0.9 N/V) while significant differences occurred at 32 Hz capture rate (6.2 ± 3.8 vs 16.0 ± 8.0; p < 0.01). Low correlations were found between EMG activity captured at 1984 Hz during PWATT and lean thigh volume (r = 0.36) and MVC (r = 0.32). Asymptote values found on this study suggest that data captured below 326 Hz for SUB, 503 Hz for PWATT and 1604 Hz for MVC are not reliable. Therefore apparatus capturing EMG data at low frequencies from these values cannot be used for quantitative data analyses.en_UK
dc.publisherThieme Publishing / Georg Thieme Verlagen_UK
dc.relationHunter A, Gibson ASC, Lambert M, Dennis SC, Mullany H, O'Malley MJ, Vaughan CL, Kay D & Noakes TD (2003) EMG amplitude in maximal and submaximal exercise is dependent on signal capture rate. International Journal of Sports Medicine, 24 (2), pp. 83-89.
dc.rightsPublisher policy allows this work to be made available in this repository. Published in International Journal of Sports Medicine 2003; 24(2): 83-89 by Thieme. The original publication is available at:
dc.subjectisometric contractionen_UK
dc.subjectcycling activityen_UK
dc.titleEMG amplitude in maximal and submaximal exercise is dependent on signal capture rateen_UK
dc.typeJournal Articleen_UK
dc.citation.jtitleInternational Journal of Sports Medicineen_UK
dc.type.statusAM - Accepted Manuscripten_UK
dc.contributor.affiliationUniversity of Cape Townen_UK
dc.contributor.affiliationUniversity of Cape Townen_UK
dc.contributor.affiliationUniversity of Cape Townen_UK
dc.contributor.affiliationUniversity College Dublin (UCD)en_UK
dc.contributor.affiliationUniversity College Dublin (UCD)en_UK
dc.contributor.affiliationUniversity of Cape Townen_UK
dc.contributor.affiliationCharles Sturt Universityen_UK
dc.contributor.affiliationUniversity of Cape Townen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorHunter, Angus|0000-0001-7562-6145en_UK
local.rioxx.authorGibson, Alan St Clair|en_UK
local.rioxx.authorLambert, Michael|en_UK
local.rioxx.authorDennis, Stephen C|en_UK
local.rioxx.authorMullany, Hugh|en_UK
local.rioxx.authorO'Malley, Mark J|en_UK
local.rioxx.authorVaughan, Christopher L|en_UK
local.rioxx.authorKay, Derek|en_UK
local.rioxx.authorNoakes, Timothy D|en_UK
local.rioxx.projectInternal Project|University of Stirling|
Appears in Collections:Faculty of Health Sciences and Sport Journal Articles

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