scholarly journals MUSCLE MECHANICAL PROPERTIES ALTERNATION AFTER NEUROMUSCULAR ELECTRICAL STIMULATION COMBINED CYCLING TRAINING IN CHRONIC STROKE SURVIVORS

Author(s):  
Le Li
2021 ◽  
Vol 12 ◽  
Author(s):  
Chengpeng Hu ◽  
Tong Wang ◽  
Kenry W. C. Leung ◽  
Le Li ◽  
Raymond Kai-Yu Tong

Electrical impedance myography (EIM) is a sensitive assessment for neuromuscular diseases to detect muscle inherent properties, whereas surface electromyography (sEMG) is a common technique for monitoring muscle activation. However, the application of EIM in detecting training effects on stroke survivors is relatively few. This study aimed to evaluate the muscle inherent properties and muscle activation alteration after functional electrical stimulation (FES)-assisted cycling training to chronic stroke survivors. Fifteen people with chronic stroke were recruited for 20 sessions of FES-assisted cycling training (40 min/session, 3–5 sessions/week). The periodically stimulated and assessed muscle groups were quadriceps (QC), tibialis anterior (TA), hamstrings (HS), and medial head of gastrocnemius (MG) on the paretic lower extremity. EIM parameters [resistance (R), reactance (X), phase angle (θ), and anisotropy ratio (AR)], clinical scales (Fugl-Meyer Lower Extremity (FMA-LE), Berg Balance Scale (BBS), and 6-min walking test (6MWT)] and sEMG parameters [including root-mean square (RMS) and co-contraction index (CI) value] were collected and computed before and after the training. Linear correlation analysis was conducted between EIM and clinical scales as well as between sEMG and clinical scales. The results showed that motor function of the lower extremity, balance, and walking performance of subjects improved after the training. After training, θ value of TA (P = 0.014) and MG (P = 0.017) significantly increased, and AR of X (P = 0.004) value and AR of θ value (P = 0.041) significantly increased on TA. The RMS value of TA decreased (P = 0.022) and a significant reduction of CI was revealed on TA/MG muscle pair (P < 0.001). Significant correlation was found between EIM and clinical assessments (AR of X value of TA and FMA-LE: r = 0.54, P = 0.046; X value of TA and BBS score: 0.628, P = 0.016), and between sEMG and clinical scores (RMS of TA and BBS score: r = −0.582, P = 0.029). This study demonstrated that FES-assisted cycling training improved lower limb function by developing coordinated muscle activation and facilitating an orderly myofiber arrangement. The current study also indicated that EIM can jointly evaluate lower extremity function alteration with sEMG after rehabilitation training.Clinical Trail Registration: The study was registered on the Clinical Trial Registry (trial registration number: NCT 03208439, https://clinicaltrials.gov/ct2/show/NCT03208439).


Author(s):  
Shi-Chun Bao ◽  
Wing-Cheong Leung ◽  
Vincent C. K. Cheung ◽  
Ping Zhou ◽  
Kai-Yu Tong

Abstract Background Neuromuscular electrical stimulation (NMES) is extensively used in stroke motor rehabilitation. How it promotes motor recovery remains only partially understood. NMES could change muscular properties, produce altered sensory inputs, and modulate fluctuations of cortical activities; but the potential contribution from cortico-muscular couplings during NMES synchronized with dynamic movement has rarely been discussed. Method We investigated cortico-muscular interactions during passive, active, and NMES rhythmic pedaling in healthy subjects and chronic stroke survivors. EEG (128 channels), EMG (4 unilateral lower limb muscles) and movement parameters were measured during 3 sessions of constant-speed pedaling. Sensory-level NMES (20 mA) was applied to the muscles, and cyclic stimulation patterns were synchronized with the EMG during pedaling cycles. Adaptive mixture independent component analysis was utilized to determine the movement-related electro-cortical sources and the source dipole clusters. A directed cortico-muscular coupling analysis was conducted between representative source clusters and the EMGs using generalized partial directed coherence (GPDC). The bidirectional GPDC was compared across muscles and pedaling sessions for post-stroke and healthy subjects. Results Directed cortico-muscular coupling of NMES cycling was more similar to that of active pedaling than to that of passive pedaling for the tested muscles. For healthy subjects, sensory-level NMES could modulate GPDC of both ascending and descending pathways. Whereas for stroke survivors, NMES could modulate GPDC of only the ascending pathways. Conclusions By clarifying how NMES influences neuromuscular control during pedaling in healthy and post-stroke subjects, our results indicate the potential limitation of sensory-level NMES in promoting sensorimotor recovery in chronic stroke survivors.


2017 ◽  
Vol 31 (11) ◽  
pp. 1431-1444 ◽  
Author(s):  
Jae-Hyoung Lee ◽  
Lucinda L Baker ◽  
Robert E Johnson ◽  
Julie K Tilson

Objectives: To examine the effectiveness of neuromuscular electrical stimulation (NMES) for the management of shoulder subluxation after stroke including assessment of short (1 hour or less) and long (more than one hour) daily treatment duration. Data sources: MEDLINE, CENTRAL, CINAHL, WOS, KoreaMed, RISS and reference lists from inception to January 2017 Review methods: We considered randomized controlled trials that reported neuromuscular electrical stimulation for the treatment of shoulder subluxation post-stroke. Two reviewers independently selected trials for inclusion, assessed trial quality, and extracted data. Results: Eleven studies were included (432 participants); seven studies were good quality, four were fair. There was a significant treatment effect of neuromuscular electrical stimulation for reduction of subluxation for persons with acute and subacute stroke (SMD:–1.11; 95% CI:–1.53, –0.68) with either short (SMD:–0.91; 95% CI:–1.43, –0.40) or long (SMD:–1.49; 95% CI:–2.31, –0.67) daily treatment duration. The effect for patients with chronic stroke was not significant (SMD:–1.25; 95% CI:–2.60, 0.11). There was no significant effect of neuromuscular electrical stimulation on arm function or shoulder pain. Conclusion: This meta-analysis suggests a beneficial effect of neuromuscular electrical stimulation, with either short or long daily treatment duration, for reducing shoulder subluxation in persons with acute and subacute stroke. No significant benefits were observed for persons with chronic stroke or for improving arm function or reducing shoulder pain.


2018 ◽  
Vol 99 (5) ◽  
pp. 1011-1022.e1 ◽  
Author(s):  
Zhongqiu Hong ◽  
Minghong Sui ◽  
Zhiqiang Zhuang ◽  
Huihua Liu ◽  
Xiuyuan Zheng ◽  
...  

2019 ◽  
Vol 130 (10) ◽  
pp. e213
Author(s):  
Koshiro Haruyama ◽  
Michiyuki Kawakami ◽  
Takuya Nakamura ◽  
Osamu Oshima ◽  
Nanako Hijikata ◽  
...  

2006 ◽  
Vol 30 (4) ◽  
pp. 175-183 ◽  
Author(s):  
Marcio Santos ◽  
Laura H. Zahner ◽  
Brian J. McKiernan ◽  
Jonathan D. Mahnken ◽  
Barbara Quaney

2016 ◽  
Vol 8 (1) ◽  
pp. 39-46 ◽  
Author(s):  
Takeshi Satow ◽  
Tomotaka Kawase ◽  
Atsushi Kitamura ◽  
Yuki Kajitani ◽  
Takuya Yamaguchi ◽  
...  

Background: Walking ability is important in stroke patients to maintain daily life. Nevertheless, its improvement is limited with conventional physical therapy in chronic stage. We report the case of a chronic stroke patient showing a remarkable improvement in gait function after a new neurorehabilitation protocol using transcranial direct current stimulation (tDCS) and neuromuscular electrical stimulation (NMES). Case Presentation: A 62-year-old male with left putaminal hemorrhage suffered from severe right hemiparesis. He could move by himself with a wheelchair 1 year after the ictus. Anodal tDCS at the vertex (2 mA, 20 min) with NMES at the anterior tibialis muscle had been applied for 3 weeks. The Timed Up and Go test and 10-meter walk test improved after the intervention, which had been maintained for at least 1 month. Conclusion: This single case suggests the possibility that tDCS with NMES could be a new rehabilitation approach to improve the gait ability in chronic stroke patients.


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