期刊
WORLD JOURNAL OF CLINICAL CASES
卷 7, 期 19, 页码 2976-2985出版社
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.12998/wjcc.v7.i19.2976
关键词
Robotics; Rehabilitation; Muscles; Neuronal plasticity; Gait; Knee
资金
- Research Project of Future Growth Engine Flagship Project [CN16040]
- National Research Foundation of Korea - Korea government (Ministry of Science, ICT and Future Planning) [NRF-2017R1A2B4011478]
BACKGROUND De-afferentation or non-weight bearing induces rapid cortical and spinal a-motor neuron excitability. Author supposed that an end-effector type gait robot (EEGR) could provide patients with a training condition that was specific enough to activate rapid cortical/spinal neuroplasticity, leading to immediate muscle strengthening. The electromyographic and biomechanical comparisons were conducted. AIM To compare the electromyographic activities of the thigh and shank muscles and isometric peak torque (PT) before and after walking training on a floor or in the end-effector gait robot. METHODS Twelve outpatients without ambulatory dysfunction were recruited. Order of two interventions (5-min training on a floor at a comfortable pace or training in an EEGR with non-weight bearing on their feet and 100% guidance force at 2.1 km/h) were randomly chosen. Isometric PT, maximal ratio of torque development, amplitude of compound motor action potential (CMAP), and area under the curve (AUC) were evaluated before and 10 min after both interventions. RESULTS The degree of PT improvement of the dominant knee flexors was larger in the EEGR than on the floor (9.6 +/- 22.4 Nm/BW, P < 0.01). The EEGR-trained patients had greater PT improvement of the dominant knee extensors than those who trained on the floor (4.5 +/- 28.1 Nm/BW, P < 0.01). However, all electromyographic activities of the thigh and shank muscles (peak CMAP, mean and peak AUC) were significantly lower for the use of the EEGR than walking on the floor. CONCLUSION Immediate strengthening of the knee flexors and extensors was induced after the 5-min EEGR training, despite reduced muscular use.
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