2008
DOI: 10.1016/j.jelekin.2007.03.012
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The assessment of back muscle capacity using intermittent static contractions. Part I – Validity and reliability of electromyographic indices of fatigue

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Cited by 37 publications
(39 citation statements)
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References 73 publications
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“…influencing the MVC test previously performed; the absence of difference in EMG parameters between healthy and patients with CLBP and the smaller decrease in power frequency (reflecting lower fatigue) found in the latter group in some studies could be explained by the underestimation of the patients MVC resulting in a lower load level (Elfving et al, 2003;Lariviere et al, 2003a;Kramer et al, 2005). In order to avoid such a bias and to limit the influence of the anthropometric variables, Larivière et al recently proposed a promising assessment based on S-EMG monitoring during intermittent submaximal static contractions (6,5 seconds contraction / 1,5 second rest) performed in a non-commercial trunk dynamometer at a specific intensity (90 N.m) during 5 to 10 minutes (Lariviere et al, 2008a;Lariviere et al, 2009). Their results based on healthy subjects suggest that the EMG indices used in the study could predict absolute endurance as well as strength with the use of a single intermittent and time-limited endurance test (Lariviere et al, 2008b).…”
Section: Alternative To Maximum Effort Tests To Assess Trunk Muscle Pmentioning
confidence: 99%
“…influencing the MVC test previously performed; the absence of difference in EMG parameters between healthy and patients with CLBP and the smaller decrease in power frequency (reflecting lower fatigue) found in the latter group in some studies could be explained by the underestimation of the patients MVC resulting in a lower load level (Elfving et al, 2003;Lariviere et al, 2003a;Kramer et al, 2005). In order to avoid such a bias and to limit the influence of the anthropometric variables, Larivière et al recently proposed a promising assessment based on S-EMG monitoring during intermittent submaximal static contractions (6,5 seconds contraction / 1,5 second rest) performed in a non-commercial trunk dynamometer at a specific intensity (90 N.m) during 5 to 10 minutes (Lariviere et al, 2008a;Lariviere et al, 2009). Their results based on healthy subjects suggest that the EMG indices used in the study could predict absolute endurance as well as strength with the use of a single intermittent and time-limited endurance test (Lariviere et al, 2008b).…”
Section: Alternative To Maximum Effort Tests To Assess Trunk Muscle Pmentioning
confidence: 99%
“…When the worker is bending forward their back in a long period of time, static contraction of muscles can occur particularly in the back. Due to static contraction, performance of the muscles may decrease and this condition can lead to discomfort and muscle fatigue [17].…”
Section: Current Trends In Ergonomicsmentioning
confidence: 99%
“…In part I of this 2-part series (Larivière et al, 2008), a new EMG-based endurance test, namely the functional endurance test (FET), was proposed. Contrary to previous EMG-based tests involving one short-duration (about 30 s) sustained contraction at a high relative load [ > 70% of the maximal voluntary contraction (MVC)], the FET involves repeated intermittent contractions during a longer period of time (5-10 min) at a moderate absolute load or torque (90 N m).…”
Section: Introductionmentioning
confidence: 99%