Analysis of the effects of body weight-supported gait training on the electromyographic activity of the lower limbs and motor irradiation to the upper limbs in spinal cord injured patients
DOI:
https://doi.org/10.11606/issn.1679-9836.v101i4e-173259Keywords:
Electromyography, Gait, Spinal cord injuriesAbstract
Rehabilitation on the treadmill with partial body weight support (PBWS) in individuals with spinal cord injuries can passively reproduce gait, helping them with weight bearing on the lower limbs (LL) and orthostatic posture. The objective of the study was to assess motor irradiation from the lower limbs to the upper limbs during gait training with PBWS. The participants were three male individuals diagnosed with low spinal cord injury (T10 and L1), classified as ASIA A, with partial preservation of nerve roots. Subjects were submitted to gait training with PBWS and electromyographic assessment of the muscles Biceps brachii (BB), Rectus femoris (RF) and Lateral Gastrocnemius (LG) on both sides. Statistical analysis included Shapiro-Wilk and de Levene tests, One way ANOVA test and Tukey’s HSD post-hoc test. In the resting state, there was less activity of BB muscles on both sides when compared to the RF and LG, which can be explained by the secondary impairments arising from the individuals’ injury. The gait cycle (GC) was repeated three times; in GC1 there was greater electromyographic activity in the right LG muscle and lower activity of the right BB muscle and, statistically, right LG and left BB showed higher mean activity (statistically significant results). In GC2, the same pattern of activity of GC1 was observed, but the right RF muscle reduced its activation threshold. In GC3, the activity levels of the previous cycles were maintained, but the left RF muscle showed an increase in the thresholds of electromyographic activation when compared to the other muscles. Based on these results, the BB muscle presented quantitative variations in electromyographic activation, demonstrating the presence of motor irradiation from LL to upper limbs during the GC. The qualitative analysis showed “peaks” of activity in this muscle mainly during the support phases of the gait training.
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Copyright (c) 2022 Ana Flávia Miquelutti Oliveira, Matheus Furlan Paulo, Natasha Cordova Arruda, Lorena Lataro Bernardes Silva, Luis Eduardo Faiana, Giovanna Affonso, Saulo Cesar Vallin Fabrin, Simone Cecílio Hallak Regalo, Edson Donizetti Verri, Gabriel Padua Silva
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