Dissociation in changes in EMG activation during maximal isometric and submaximal low force dynamic contractions after exercise-induced muscle damage

Plattner, Kristina; Baumeister, Jochen; Lamberts, Robert P.; Lambert, Michael

doi:10.1016/j.jelekin.2011.01.008

Cited by 10 publications

(20 citation statements)

References 54 publications

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“…The first finding of this study was that the EIMD protocol resulted in similar physiological responses (Fig. ) reflecting muscle damage in the experimental group as previously reported (Plattner et al., ).…”

Section: Discussionsupporting

confidence: 85%

“…We have previously shown (using the same protocol) that submaximal EMG activity increases within the first 12–36 h after the induction of EIMD, while maximal EMG and force output decrease (Plattner et al., ). It has been suggested that the increased submaximal EMG activity is due to increased neural drive initiated by the central nervous system (McAuley et al., ; Semmler et al., ).…”

Section: Discussionmentioning

confidence: 91%

“…(a–d)). Also, muscle function (force output) was impaired immediately after the EIMD protocol (Semmler et al., ; Plattner et al., ) and gradually recovered, but did not return to baseline by 132 h (Fig. (e)).…”

Section: Discussionmentioning

confidence: 98%

“…Interestingly, while there is a decrease in EMG activity during a maximal voluntary contraction (MVC), submaximal EMG is increased within the first 12 h after an EIMD protocol. This is of interest because the sensation of pain is only perceived 12–24 h after an EIMD protocol (Plattner et al., ). Collectively, these data suggest that the changes observed in the neuromuscular function after EIMD are driven by an upstream regulator situated in the brain, which is guided by peripheral bottom‐up input (i.e., symptoms of pain, inflammation, intramuscular enzyme leakage, and tissue damage) (Semmler et al., ; Plattner et al., ).…”

mentioning

confidence: 99%

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The response of cortical alpha activity to pain and neuromuscular changes caused by exercise‐induced muscle damage

Plattner

Lambert

Tam

et al. 2012

Scandinavian Med Sci Sports

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Exercise-induced muscle damage (EIMD) is characterized by pain, swelling, and shortening of the muscle; increased serum creatine kinase; decreased force output; and altered neuromuscular function. The aim of this study was to investigate the effects of EIMD to determine the relationship between the peripheral symptoms, neuromuscular changes, and delayed pain sensation during a submaximal movement of the biceps brachii on cortical alpha (α) activity. In contrast to the control (n = 12) group, the experimental (n = 16) group participated in an EIMD protocol, and both groups were monitored for 132 h post-EIMD protocol. At 12 h, neuromuscular functioning was already disturbed while the sensation of pain was perceived, but not fully developed. Muscle pain scores in the experimental group peaked after 36 h with the lowest torque reported at 12 h. α-1 activity increased significantly in the motor and somatosensory area 12 h post-EIMD while α-2 activity increased in the contralateral fronto-central area. At 36 h, pain had further increased and neuromuscular function improved while α-1 and α-2 activities had decreased. We hypothesize that α-1 activity over the motor and somatosensory cortex of the experimental group displays a compensatory increase in response to the changes in neuromuscular function during movement, while an increase in α-2 activity is related to the suppression of pain experienced within the first 12 h.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 98%

mentioning

confidence: 99%

See 2 more Smart Citations

The response of cortical alpha activity to pain and neuromuscular changes caused by exercise‐induced muscle damage

Plattner

Lambert

Tam

et al. 2012

Scandinavian Med Sci Sports

View full text Add to dashboard Cite

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“…Various sEMG findings associated with the TB and the processing methods used to analyse the TB have been focused on a large number of muscular activities, for example muscle fatigue [12][13][14][15], force [16,17], and motor unit action potential [18,19]. These activities of the TB are generally investigated because of their physiological importance in exercise [20][21][22], rehabilitation [23][24][25], sports science [26][27][28], and signal processing for prosthesis control applications [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of repetitive isometric contractions on the heads of triceps brachii muscle during grip force exercise

Ali

Sundaraj

Ahmad

et al. 2014

THC

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OBJECTIVES: Normally, surface electromyography electrodes are used to evaluate the activity of superficial muscles during various kinds of voluntary contractions of muscle fiber. The objective of the present study was to investigate the effect of repetitive isometric contractions on the three heads of the triceps brachii muscle during handgrip force exercise. METHODS: Myoelectric signals were recorded from the lateral, long and medial heads of the triceps brachii muscle in 13 healthy males during maximal isometric contractions for 10 s of concurrent handgrip force and elbow extension. The subjects were asked to perform their contraction task five times with 3 minutes interval between two successive contractions. RESULTS: Decreasing electromyographic activities were found for the lateral and long heads, and increasing for the medial head throughout the 5 different contractions. Electromyographic activities were found for the lateral head with mean = 199.84, SD = 7.65, CV = 3.83%, the long head with mean = 456.76, SD = 18.10, CV = 3.96%, and the medial head with mean = 505.16, SD = 8.47, CV = 1.68%. Electromyographic activities among the three heads of triceps brachii were significantly different (F = 3.82) at the alpha level of (p < 0.05). CONCLUSIONS: These findings support that repetitive isometric contractions decrease the contractile activity in the lateral and long heads, and increases in the medial head of the triceps brachii muscle during handgrip force exercise with full elbow extension, and the electromyographic activity changes are observed to be more significant at the long head as compared to the lateral and medial heads.

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Exercise-induced muscle damage: mechanism, assessment and nutritional factors to accelerate recovery

et al. 2021

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Dissociation in changes in EMG activation during maximal isometric and submaximal low force dynamic contractions after exercise-induced muscle damage

Cited by 10 publications

References 54 publications

The response of cortical alpha activity to pain and neuromuscular changes caused by exercise‐induced muscle damage

The response of cortical alpha activity to pain and neuromuscular changes caused by exercise‐induced muscle damage

Evaluation of repetitive isometric contractions on the heads of triceps brachii muscle during grip force exercise

Exercise-induced muscle damage: mechanism, assessment and nutritional factors to accelerate recovery

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