Hamdan, Puteri Nur Farhana and Hamzaid, Nur Azah and Hasnan, Nazirah and Abd Razak, Nasrul Anuar and Razman, Rizal Mohd and Usman, Juliana (2024) Effects of releasing ankle joint during electrically evoked cycling in persons with motor complete spinal cord injury. Scientific Reports, 14 (1). p. 6451. ISSN 2045-2322, DOI https://doi.org/10.1038/s41598-024-56955-w.
Full text not available from this repository.Abstract
Literature has shown that simulated power production during conventional functional electrical stimulation (FES) cycling was improved by 14% by releasing the ankle joint from a fixed ankle setup and with the stimulation of the tibialis anterior and triceps surae. This study aims to investigate the effect of releasing the ankle joint on the pedal power production during FES cycling in persons with spinal cord injury (SCI). Seven persons with motor complete SCI participated in this study. All participants performed 1 min of fixed-ankle and 1 min of free-ankle FES cycling with two stimulation modes. In mode 1 participants performed FES-evoked cycling with the stimulation of quadriceps and hamstring muscles only (QH stimulation), while Mode 2 had stimulation of quadriceps, hamstring, tibialis anterior, and triceps surae muscles (QHT stimulation). The order of each trial was randomized in each participant. Free-ankle FES cycling offered greater ankle plantar- and dorsiflexion movement at specific slices of 20 degrees crank angle intervals compared to fixed-ankle. There were significant differences in the mean and peak normalized pedal power outputs (POs) F(1,500) = 14.03, p < 0.01 and F(1,500) = 7.111, p = 0.008, respectively] between fixed- and free-ankle QH stimulation, and fixed- and free-ankle QHT stimulation. Fixed-ankle QHT stimulation elevated the peak normalized pedal PO by 14.5% more than free-ankle QH stimulation. Releasing the ankle joint while providing no stimulation to the triceps surae and tibialis anterior reduces power output. The findings of this study suggest that QHT stimulation is necessary during free-ankle FES cycling to maintain power production as fixed-ankle.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education, Malaysia (FRGS/1/2020/SKK0/UM/02/1), Ministry of Higher Education, Malaysia through the Fundamental Research Grant Scheme (FRGS) |
| Uncontrolled Keywords: | Functional electrical stimulation; Paraplegics; Pedal power; Ankle biomechanics; Rehabilitation |
| Subjects: | Q Science > Q Science (General) R Medicine T Technology > T Technology (General) |
| Divisions: | Faculty of Engineering > Biomedical Engineering Department Faculty of Medicine > Rehabilitation Medicine Department Faculty of Sports and Exercise Science (formerly known as Centre for Sports & Exercise Sciences) |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 21 Oct 2024 06:58 |
| Last Modified: | 21 Oct 2024 06:58 |
| URI: | http://eprints.um.edu.my/id/eprint/45430 |
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