Intra-session and inter-day reliability of forearm surface EMG during varying hand grip forces

Oskouei, Alireza Hashemi; Paulin, Michael G.; Carman, Allan

doi:10.1016/j.jelekin.2012.08.011

Cited by 38 publications

(37 citation statements)

References 19 publications

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“…During the contractions, the forearm was secured in a previously validated rig in order to minimize elbow and shoulder movement. The rig held the elbow at approximately 120°during the handgrip recordings (Hashemi Oskouei et al, 2013). All of the EMG data was recorded at 1000 Hz and filtered at 20-400 Hz.…”

Section: Emg Proceduresmentioning

confidence: 99%

“…The current research displayed large SDs comparable to previously published works. This large within-subject variability is expected when using EMG techniques to evaluate muscle activity (Hashemi Oskouei et al, 2013).…”

Section: Muscle Activitymentioning

confidence: 99%

“…Electromyography (EMG) is a method commonly used when evaluating muscle function (Hashemi Oskouei, Paulin, & Carman, 2013). It is a technique that can be applied for assessing and reducing injury risk by predicting the loads placed on the musculoskeletal system (Dickerson, Martin, & Chaffin, 2007).…”

Section: Introductionmentioning

confidence: 99%

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An electromyographic study of the effect of hand grip sizes on forearm muscle activity and golf performance

Sorbie

Hunter

Grace

et al. 2016

Research in Sports Medicine

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The study describes the differences in surface electromyography (EMG) activity of two forearm muscles in the lead and trail arm at specific phases of the golf swing using a 7-iron with three different grip sizes among amateur and professional golfers. Fifteen right-handed male golfers performed five golf swings using golf clubs with three different grip sizes. Surface EMG was used to measure muscle activity of the extensor carpi radialis brevis (ECRB) and flexor digitorum superficialis (FDS) on both forearms. There were no significant differences in forearm muscle activity when using the three golf grips within the group of 15 golfers (p > 0.05). When using the undersize grip, club head speed significantly increased (p = 0.044). During the backswing and downswing phases, amateurs produced significantly greater forearm muscle activity with all three grip sizes (p < 0.05). In conclusion, forearm muscle activity is not affected by grip sizes. However, club head speed increases when using undersize grips.

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Section: Emg Proceduresmentioning

confidence: 99%

Section: Muscle Activitymentioning

confidence: 99%

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An electromyographic study of the effect of hand grip sizes on forearm muscle activity and golf performance

Sorbie

Hunter

Grace

et al. 2016

Research in Sports Medicine

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show abstract

“…The current study displayed high variation in the ES activation levels, which may be attributed to the high variability in different swing techniques used by the study participants. Furthermore, this large within-subject variability can be expected when using EMG techniques to evaluate muscle activity (Hashemi Oskouei, Paulin, & Carman, 2013).…”

Section: Discussionmentioning

confidence: 99%

Electromyographic analyses of the erector spinae muscles during golf swings using four different clubs

Sorbie

Grace

et al. 2017

Journal of Sports Sciences

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The purpose of this study was to compare the electromyography (EMG) patterns of the thoracic and lumbar regions of the erector spinae (ES) muscle during the golf swing whilst using four different golf clubs. Fifteen right-handed male golfers performed a total of twenty swings in random order using the driver, 4-iron, 7-iron and pitching-wedge. Surface EMG was recorded from the lead and trail sides of the thoracic and lumbar regions of the ES muscle (T8, L1 and L5 lateral to the spinous-process). Three-dimensional high-speed video analysis was used to identify the backswing, forward swing, acceleration, early and late follow-through phases of the golf swing. No significant differences in muscle-activation levels from the lead and trail sides of the thoracic and lumbar regions of the ES muscle were displayed between the driver, 4-iron, 7-iron and pitching-wedge (P > 0.05). The highest mean thoracic and lumbar ES muscle-activation levels were displayed in the forward swing (67-99% MVC) and acceleration (83-106% MVC) phases of the swing for all clubs tested. The findings from this study show that there were no significant statistical differences between the driver, 4-iron, 7-iron and pitching-wedge when examining muscle activity from the thoracic and lumbar regions of the ES muscle.

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“…The reliability and measurement error of forearm surface EMG have been well documented in the literature [11], where the surface EMG was shown to have excellent intra-session reliability (intraclass correlation coefficient of 0.90) and low standard error of measurement. The target muscles were flexors and extensors involved in wrist joint movement, i.e., Flexor Carpi Radialis (FCR), Flexor Carpi Ulnaris (FCU), Extensor Carpi Radialis (ECR) and Extensor Carpi Ulnaris (ECU).…”

Section: S2157mentioning

confidence: 86%

Comparison of EMG during passive stretching and shortening phases of each muscle for the investigation of parkinsonian rigidity

Kwon

Kim

et al. 2015

BME

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Abstract. The aim of this study was to test the hypothesis in the literature that torque resistance of parkinsonian rigidity is the difference between the independent contributions of stretched and shortened muscles. The hypothesis was tested using muscle-specific stretch-shortening (MSSS) EMG ratio in this study. Nineteen patients with idiopathic Parkinson's disease (PD) and 18 healthy subjects (the mean age comparable to that of patients) participated in this study. The EMG activity was measured in the four muscles involved in wrist joint movement, i.e. flexor carpi radialis, flexor carpi ulnaris, extensor carpi radialis and extensor carpi ulnaris. The passive flexion-extension movement with a range of ±30° was applied at wrist joint. Root mean squared (RMS) mean was calculated from the envelope of the EMG for each of stretching and shortening phases. MSSS EMG ratio was defined as the ratio of RMS EMG of stretching phase and RMS EMG of shortening phase of a single muscle, and it was calculated for each muscle. MSSS EMG ratios were smaller than one in all muscles. These results indicate that all wrist muscles generate greater mean EMG during shortening than during stretching. Therefore, the torque resistance of parkinsonian rigidity cannot be explained as the simple summation of independent antagonistic torque pair.

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Intra-session and inter-day reliability of forearm surface EMG during varying hand grip forces

Cited by 38 publications

References 19 publications

An electromyographic study of the effect of hand grip sizes on forearm muscle activity and golf performance

An electromyographic study of the effect of hand grip sizes on forearm muscle activity and golf performance

Electromyographic analyses of the erector spinae muscles during golf swings using four different clubs

Comparison of EMG during passive stretching and shortening phases of each muscle for the investigation of parkinsonian rigidity

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