Determination of Stimulation Timing Pattern based on EMG Signals for FES Cycling with Pedaling Wheelchair

Watanabe, Takashi; Tadano, Takeshi

doi:10.1007/978-981-10-5122-7_99

Cited by 3 publications

(6 citation statements)

References 10 publications

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“…Therefore, it was considered that large variation of mean cycling speed of a cycle and backward propulsion were caused in the case of very low target speed condition (0.2m/s). Activation timing of the rectus femoris was different both in the start and the end timings from those of the vastus lateralis in moderate and slow speed cycling conditions [19]. Considering muscle function during cycling, stimulation timing pattern of the RF for moderate and slow speed cycling have to be determined because the RF has the function of knee extension in addition to hip flexion.…”

Section: Discussionmentioning

confidence: 99%

“…Since duration of applying electrical stimulation for one side was 500-600ms under the 0.7m/s of cycling speed, it is considered that cycling speed did not become stable in the duration, because applying electrical stimulation was switched between the left and the right sides before electrical stimulation developed enough large movement. Stimulation timing used in this study was determined based on EMG signals during voluntary cycling [19]. Although muscle response time [9] was tested in using with EMG-based stimulation timing, there was no significant improvement [19].…”

Section: Discussionmentioning

confidence: 99%

“…Stimulation timing used in this study was determined based on EMG signals during voluntary cycling [19]. Although muscle response time [9] was tested in using with EMG-based stimulation timing, there was no significant improvement [19]. Further studies for compensating the delay in muscle response is necessary.…”

Section: Discussionmentioning

confidence: 99%

“…Stimulation timing used in this study was determined based on EMG signals during voluntary cycling under the fast speed condition [19]. Therefore, it was considered that large variation of mean cycling speed of a cycle and backward propulsion were caused in the case of very low target speed condition (0.2m/s).…”

Section: Discussionmentioning

confidence: 99%

“…Fig. 6 were determined from EMG signals during voluntary cycling by healthy subjects [19]. The RF, the VL and the TA were activated from 0 to −290 deg, from −110 to −290 deg and from −30 to −260 deg of crank angle, respectively, during fast speed cycling.…”

Section: Methodsmentioning

confidence: 99%

See 4 more Smart Citations

Experimental Tests of a Prototype of IMU-Based Closed-Loop Fuzzy Control System for Mobile FES Cycling with Pedaling Wheelchair

Watanabe

Tadano

2018

IEICE Trans. Inf. & Syst.

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Rehabilitation training with pedaling wheelchair in combination with functional electrical stimulation (FES) can be effective for decreasing the risk of falling significantly. Automatic adjustment of cycling speed and making a turn without standstill has been desired for practical applications of the training with mobile FES cycling. This study aimed at developing closed-loop control system of cycling speed with the pedaling wheelchair. Considering clinical practical use with no requirement of extensive modifications of the wheelchair, measurement method of cycling speed with inertial motion measurement units (IMUs) was introduced, and fuzzy controller for adjusting stimulation intensity to regulate cycling speed was designed. The developed prototype of closed-loop FES control system achieved appropriately cycling speed for the different target speeds in most of control trials with neurologically intact subjects. In addition, all the control trials of low speed cycling including U-turn achieved maintaining the target speed without standstill. Cycling distance and cycling time increased with the closed-loop control of low cycling speed compensating decreasing of cycling speed caused by muscle fatigue. From these results, the developed closed-loop fuzzy FES control system was suggested to work reliably in mobile FES cycling.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Experimental Tests of a Prototype of IMU-Based Closed-Loop Fuzzy Control System for Mobile FES Cycling with Pedaling Wheelchair

Watanabe

Tadano

2018

IEICE Trans. Inf. & Syst.

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An Examination of Stimulation Timing Patterns for Mobile FES Cycling Under Closed-Loop Control of Low Cycling Speed

Watanabe

Tadano

2018

Biosystems &Amp; Biorobotics

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Passive Knee Orthoses Assistance in Functional Electrical Stimulation Cycling in an Individual With Spinal Cord Injury

Sousa

Baptista

et al. 2021

IEEE Trans. Neural Syst. Rehabil. Eng.

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Functional Electrical Stimulation (FES) may be used in rehabilitation and assistance of people with Spinal Cord Injury (SCI). One significant application is facilitating physical exercise, mainly when combining FES with mechanical platforms, such as tricycles. However, there are still technical challenges in FES cycling protocols, such as improving control and improving cycling performance. Here we show how passive elements in knee orthoses during FES cycling could increase the average cadence, taking advantage of the cycling movement. Our approach is twofold. First, we simulated the forward dynamics of a detailed musculoskeletal model with passive elements over the knees. Simulations showed that specific spring stiffness ranges increased the crankset speed during cycling by more than 50%. Using parameters found in simulations, we built a pair of passive orthoses and performed experiments with one individual with SCI. During two days, the volunteer cycled with similar stimulation magnitude with and without the passive elements. We observed that the average crankset speed was higher by more than 10% when the springs were attached to the passive orthoses. These results show the potential of using passive elements to increase cycling speed for FES cycling with similar or even lower stimulation magnitude, leading to longer exercise duration.

show abstract

Determination of Stimulation Timing Pattern based on EMG Signals for FES Cycling with Pedaling Wheelchair

Cited by 3 publications

References 10 publications

Experimental Tests of a Prototype of IMU-Based Closed-Loop Fuzzy Control System for Mobile FES Cycling with Pedaling Wheelchair

Experimental Tests of a Prototype of IMU-Based Closed-Loop Fuzzy Control System for Mobile FES Cycling with Pedaling Wheelchair

An Examination of Stimulation Timing Patterns for Mobile FES Cycling Under Closed-Loop Control of Low Cycling Speed

Passive Knee Orthoses Assistance in Functional Electrical Stimulation Cycling in an Individual With Spinal Cord Injury

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