Influência da distância intereletrodos e da cadência de movimento no domínio da frequência do sinal de EMG de superfície

Tank, Flávia Fernandes; Silva, Gustavo Telles da; Oliveira, Carlos Gomes de; Garcia, Marco Antônio Cavalcanti

doi:10.1590/s1517-86922009000500008

Cited by 5 publications

(4 citation statements)

References 16 publications

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“…The loss of descending excitatory motor signals in the spinal cortical tract results in reduced activation and muscle size, which is further aggravated by pathological changes in muscle elasticity. Understanding these processes and which therapy enables better muscle activation and strength directs physical therapy work and provides better functional responses for the patient 37 .…”

Section: Discussionmentioning

confidence: 99%

The use of surface electromiography as a measure of physiotherapy outcomes in children with cerebral palsy: a systematic review

Schmidt

Gerzson

Almeida

2020

jhgd

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Introduction: Cerebral palsy is the most common physical disability in childhood. Physical therapy plays a central role in managing the treatment of disease sequelae. However, it is always a challenge to quantify the results obtained in physical therapy interventions. Thus, surface electromyography has been increasingly used by physiotherapists because it is a quantitative method of evaluation and treatment of neuromuscular system dysfunctions. Objective: To analyze the use of surface electromyography as a physical therapy outcome measure in children with cerebral palsy. Methods: From the search in two important databases, clinical trials of physical therapy interventions that used surface electromyography as a physiotherapy outcome factor in children with cerebral palsy, published in Portuguese, English, French or Spanish until August 2019, were selected. Results: A total of 166 articles were found in the databases searched. Of these, only 15 were included and classified with good methodological quality by PEDro and because they were related to surface electromyography. A flowchart with standardization of actions was built taking into account the most prevalent findings in the studies. Conclusion: Surface electromyography has been applied by physiotherapists to evaluate the effects of the intervention, but it is necessary to improve its level of evidence.

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Section: Discussionmentioning

confidence: 99%

The use of surface electromiography as a measure of physiotherapy outcomes in children with cerebral palsy: a systematic review

Schmidt

Gerzson

Almeida

2020

jhgd

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“…Another important factor to be discussed in sEMG studies is the influence of IED, which must be always taken in account since it affects the spectral and temporal contents of the signal (Tank et al, 2009;Telles et al, 2008). Moreover, according to Castroflorio et al (2006), increasing IED improves the reproducibility of sEMG data from SM and AT muscles.…”

Section: Discussionmentioning

confidence: 99%

Proposal of surface electromyography signal acquisition protocols for masseter and temporalis muscles

et al. 2017

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Introduction: The aim of this study was to propose a method of electrodes positioning on the superficial masseter and anterior temporalis muscles for surface electromyographic (sEMG) recordings in order to overcome some known methodological constraints. Methods: Fifteen volunteers with normal occlusion participated in two experimental sessions within a 7 day-period. Surface electrodes were placed on two different locations that were based on palpable and individual anatomical references. Surface EMG signals (2000 Hz per channel; A/D: 16 bits; gain: 2000 X; band-pass filter: 20-500 Hz) were recorded under three conditions: mandibular rest position, 30% and 100% of maximum voluntary bite force. Three measurements of maximal bite force were taken by using a force transducer positioned over the lower right first molar region and the highest record was taken into account. The root mean square value was considered for analysis. Intraclass correlation coefficients (ICCs), paired t test, and the Bland-Altman method comprised the statistical analyses. The level of significance was set at 0.05. Results: ICC records for right and left masseter and anterior temporalis muscles at T 0 (first sEMG record) and T 7 (second sEMG record) intervals were significantly different (p<0.05). The results showed satisfactory to excellent reproducibility of RMS values at rest, MVBF and 30% MVBF, as well as for MVBF in kgf. Conclusion: The results showed reliable reproducibility for the sEMG signal recording in masseter and anterior temporalis muscles from the protocols presented and under the three conditions investigated.

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“…11 The sEMG signal presented lower values for the biceps brachii (mean = 24uV -52%), the rectus abdominis (mean = 35uV -45%) and the rectus femoris (mean = 97uV -47%). The low electrical activity of the muscle resulted in a lower recruitment of motor units 12 , added four points to the level of muscle strength during the test, what suggested a generalized muscle weakness 10 , similar to delayed motor development and undernutrition.…”

Section: Muscle Electrical Activity Evaluation Muscle Electrical Actimentioning

confidence: 97%

Avaliação das anomalias clínico-funcionais na doença de Pompe: Relato de Caso

Quemelo

Lourenço

Borges

et al. 2013

Medicina (Ribeirão Preto)

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The patient was a 15 year-old girl who turned out at the Physical Therapy Clinic presenting progressive scoliosis and angle of 50º Coob by X-Ray. She complained of back pain, headache and weakness of shoulder and pelvic girdle. Physical therapy evaluation came across features of delayed motor development and undernourishment, together with generalized muscle weakness (grade = 4) which was observed by the Kendall test. Lung vital capacity was 40.5%. Clinical Changes: studies of the enzymes with acid alpha-glucosidase assay kits used on filter paper and leukocytes showed low enzyme activity, suggesting a late form of the Pompe disease. The molecular studies proved that the patient had a mutation associated with late-onset Pompe disease. Acid alpha-glucosidase enzyme assay studies performed in skin fibroblasts showed a reduction of the enzymatic activity of the acid alpha-glucosidase, confirming the previous results. On account of the results, Pompe disease induced important changes in clinical and functional, as well as metabolic changes, decreased strength and muscle action potentially, biomechanical changes in the spine and changes in respiratory capacity. Furthermore, this case of Pompe disease illustrates the importance of adequate physical therapy evaluation as it can be the starting point of investigation of serious conditions such as late onset Pompe disease.

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Influência da distância intereletrodos e da cadência de movimento no domínio da frequência do sinal de EMG de superfície

Cited by 5 publications

References 16 publications

The use of surface electromiography as a measure of physiotherapy outcomes in children with cerebral palsy: a systematic review

The use of surface electromiography as a measure of physiotherapy outcomes in children with cerebral palsy: a systematic review

Proposal of surface electromyography signal acquisition protocols for masseter and temporalis muscles

Avaliação das anomalias clínico-funcionais na doença de Pompe: Relato de Caso

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