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![Page 1: This article and any supplementary material should be cited as follows: Askari S, Chao T, de Leon RD, Won DS. The effect of timing electrical stimulation.](https://reader035.fdocuments.net/reader035/viewer/2022072006/56649f575503460f94c7ba7a/html5/thumbnails/1.jpg)
This article and any supplementary material should be cited as follows: Askari S, Chao T, de Leon RD, Won DS. The effect of timing electrical stimulation to robotic-assisted stepping on neuromuscular activity and associated kinematics. J Rehabil Res Dev. 2013;50(6):875–92.http://dx.doi.org/10.1682/JRRD.2012.06.0111
Slideshow ProjectDOI:10.1682/JRRD.2012.06.0111JSP
The effect of timing electrical stimulation to robotic-assisted stepping
on neuromuscular activity and associated kinematics
Sina Askari, MS; TeKang Chao; Ray D. de Leon, PhD; Deborah S. Won, PhD
![Page 2: This article and any supplementary material should be cited as follows: Askari S, Chao T, de Leon RD, Won DS. The effect of timing electrical stimulation.](https://reader035.fdocuments.net/reader035/viewer/2022072006/56649f575503460f94c7ba7a/html5/thumbnails/2.jpg)
This article and any supplementary material should be cited as follows: Askari S, Chao T, de Leon RD, Won DS. The effect of timing electrical stimulation to robotic-assisted stepping on neuromuscular activity and associated kinematics. J Rehabil Res Dev. 2013;50(6):875–92.http://dx.doi.org/10.1682/JRRD.2012.06.0111
Slideshow ProjectDOI:10.1682/JRRD.2012.06.0111JSP
• Aim– Determine how timing neuromuscular functional
electrical stimulation (FES) to limb movements during stepping might alter neuromuscular control differently than patterned stimulation alone.
• Relevance– FES has been used to strengthen muscles weakened
by neurological damage and artificially replace muscle activation missing because of spinal cord injury (SCI).
![Page 3: This article and any supplementary material should be cited as follows: Askari S, Chao T, de Leon RD, Won DS. The effect of timing electrical stimulation.](https://reader035.fdocuments.net/reader035/viewer/2022072006/56649f575503460f94c7ba7a/html5/thumbnails/3.jpg)
This article and any supplementary material should be cited as follows: Askari S, Chao T, de Leon RD, Won DS. The effect of timing electrical stimulation to robotic-assisted stepping on neuromuscular activity and associated kinematics. J Rehabil Res Dev. 2013;50(6):875–92.http://dx.doi.org/10.1682/JRRD.2012.06.0111
Slideshow ProjectDOI:10.1682/JRRD.2012.06.0111JSP
Method• Developed prototype FES system for rodent SCI model
that timed FES to robotic treadmill training (RTT) for 2 rat groups:– FES+RTT
• FES+RTT and tibialis anterior (TA) stimulation timed according to robot-controlled hind-limb position.
– Randomly timed stimulation (RS)• Similarly patterned stimulation, randomly timed with respect to hind-
limb movements, while in cages.
• Tested treadmill stepping ability and compared hind-limb movement and TA electromyography (EMG) activity after 4 wk.
![Page 4: This article and any supplementary material should be cited as follows: Askari S, Chao T, de Leon RD, Won DS. The effect of timing electrical stimulation.](https://reader035.fdocuments.net/reader035/viewer/2022072006/56649f575503460f94c7ba7a/html5/thumbnails/4.jpg)
This article and any supplementary material should be cited as follows: Askari S, Chao T, de Leon RD, Won DS. The effect of timing electrical stimulation to robotic-assisted stepping on neuromuscular activity and associated kinematics. J Rehabil Res Dev. 2013;50(6):875–92.http://dx.doi.org/10.1682/JRRD.2012.06.0111
Slideshow ProjectDOI:10.1682/JRRD.2012.06.0111JSP
Results
• FES+RTT group stepped faster and exhibited TA EMG profiles that better matched applied stimulation profile during training than RS group.
![Page 5: This article and any supplementary material should be cited as follows: Askari S, Chao T, de Leon RD, Won DS. The effect of timing electrical stimulation.](https://reader035.fdocuments.net/reader035/viewer/2022072006/56649f575503460f94c7ba7a/html5/thumbnails/5.jpg)
This article and any supplementary material should be cited as follows: Askari S, Chao T, de Leon RD, Won DS. The effect of timing electrical stimulation to robotic-assisted stepping on neuromuscular activity and associated kinematics. J Rehabil Res Dev. 2013;50(6):875–92.http://dx.doi.org/10.1682/JRRD.2012.06.0111
Slideshow ProjectDOI:10.1682/JRRD.2012.06.0111JSP
Conclusion
• Locomotor training consisting of FES timed to hind-limb movement improved activation of hind-limb muscle more so than RS alone.