Efeitos da fisioterapia na força, atividade mioelétrica e dor, em lombálgicos crônicos

Abstract

Introdução: A dor lombar promove hipotrofia, alterações do controle motor e instabilidade lombar, necessitando de adequado tratamento. Objetivo: Analisar o efeito do tratamento fisioterapêutico na força de extensão do tronco, na atividade elétrica dos músculos transverso abdominal (TrA) e multífido lombar (ML) e na dor em lombálgicos crônicos. Métodos: Foram avaliados 19 voluntários pré e pós-tratamento fisioterapêutico quanto a força de extensão do tronco, atividade mioelétrica (TrA e ML), e dor. Resultados: Não houve alteração na força de extensão do tronco (p=0,064); a atividade eletromiográfica apresentou diferença no ML, dos lados direito (p

Trunk muscle function and pelvic alignment associated with the presence of pain in higher education students: a cross-sectional study

“…There was a significant association between the trunk extension test and pelvic misalignment, indicating a possible association with the weakness of these muscles. However, although a number of earlier studies proved that this factor may be one of the causes of low back pain [44,45], there was no association between pain and trunk muscle weakness (p < 0.05). In addition to the fact that abdominal bracing activation increases thoracic flexion [13], and given that changes in pelvic alignment may potentially alter trunk alignment [46][47][48], this association can be justified by the near-direct anatomical, kinetic and functional association between the segments involved in trunk extension movement and pelvic control.…”

Searching for the optimal Transcranial Direct Current Stimulation (TDCS) target combined with peripheral electrical stimulation in chronic low back pain: a protocol for a randomized controlled trial

“…Composed of 24 questions, with a variation of scores between 0 and 24 points: Zero point corresponds to a person without complaints and the maximum value (24 points) to a patient with very severe limitations; Medical Outcomes Study 36-item short-form health servey (SF-36), for evaluation of quality of life (Laguardia, Campos, Travassos, Najar, Anjos, Vasconcellos, et al, 2103), in which the total score ranges from 0 to 100, in which higher scores indicate better health status; Surface Electromyography (EMGs) of the lumbar/multifidus (ML) and transverse abdominal (TrA) will be recorded using an 8-channel data acquisition system (model W4X8, Biometrics Ltd. , UK), bluetooth, with the following technical characteristics: hardware with 12-bit analog-to-digital (A/D) conversion board, 1000-fold gain amplifier, 20 to 500 Hz bandpass filter (2nd order Research, Society and Development, v. 9, n. 12, e38991211318, 2020 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v9i12.11318 amplification, reference electrode and DataLOG software for signal collection and analysis with 1000 Hz sampling frequency. The protocol of EMG capture of the ML and TrA will be according to Schmit et al (2016), with the electrodes positioned taking as reference a line connecting the upper-posterior iliac spine and the interspinous space of the first and second lumbar vertebra on both sides of the column to the ML and at a point located medially to the inguinal ligament, two centimeters medial and two centimeters caudal from the anterosuperior iliac spine on both sides of the pelvis to the TrA and the reference electrodes will be positioned in the right lateral malleolus to the ML and left to the TrA, with the volunteer in ventral and dorsal decubitus respectively. Each individual will perform three 15-second attempts in each position (rest and isometric contraction), requesting a maximum voluntary isometric contraction (CIVM), with verbal command "contract" in the fifth second and "relax" in the 10th second, being stimulated with the command "force, force, force" during the contraction.…”

Influence of pain in strength, resistance and recruitment of trunk muscles

“…However, the CG had higher values on the torso extensors strength. It is known that pain reduces muscle activity 6 . The explanation for the non-appearance of significant difference in this study may be related to the fact that the LBPG had high values of daily pain associated with the presence of limitations showed by the RMDQ 5 , leading to the restriction of movement in the region with pain, as well as of the whole body.…”

“…Low back pain (LBP) is defined as pain or discomfort on the lumbar spine, lumbosacral or sacroiliac regions, being considered one of the main musculoskeletal dysfunctions of the current time [1][2][3] . Approximately 80% of the population will have some LBP episode in its lifetime, and among these, approximately 62% will have a recurrence after one year [2][3][4][5][6] . The etiology of chronic low back pain (CLBP) and its natural course are important issues not yet well understood, and approximately 90% of the CLBP cases do not have a defined or identifiable etiology, making treatment more difficult 1,5 .…”

“…One of the hypotheses for the changes in muscle strength and endurance are the alterations in the neural adaptation and consequent modification in the motor control 7,8 . This theory suggests that changes at different levels of the nervous system can result in the redistribution of muscle activity and change in the mechanical behavior, which can lead to deficits in the postural control of the torso muscles 6,8,9 . However, this relationship between strength, endurance, and muscle recruitment of the stabilizer torso muscles was poorly addressed.…”