Abd Aziz, Musfirah and Hamzaid, Nur Azah and Hasnan, Nazirah (2022) Quantifying Arms and Legs Contributions during Repetitive Electrically-Assisted Sit-To-Stand Exercise in Paraplegics: A Pilot Study. JOVE-JOURNAL OF VISUALIZED EXPERIMENTS (189). ISSN 1940-087X, DOI https://doi.org/10.3791/63149.
Full text not available from this repository.Abstract
Execution of Sit-to-Stand (SitTS) in incomplete spinal cord injury (SCI) patients involves motor function in both upper and lower extremities. The use of arm support, in particular, is a significant assistive factor while executing SitTS movement in SCI population. In addition, the application of functional electrical stimulation (FES) onto quadriceps and gluteus maximus muscles is one of the prescribed management for incomplete SCI to improve muscle action for simple lower limb movements. However, the relative contribution of upper and lower extremities during SitTS has not been thoroughly investigated. Two motor incomplete SCI paraplegics performed repetitive SitTS to fatigue exercise challenge. Their performance was investigated as a mixed-method case-control study comparing SitTS with and without the assistance of FES. Three sets of SitTS tests were completed with 5-min resting period allocated in between sets, with mechanomyography (MMG) sensors attached over the rectus femoris muscles bilaterally. The exercise was separated into 2 sessions; Day 1 for voluntary SitTS and Day 2 for FES-assisted SitTS. Questionnaires were conducted after every session to gather the participants' input about their repetitive SitTS experience. The analysis confirmed that a SitTS cycle could be divided into three phases; Phase 1 (Preparation to stand), Phase 2 (Seat-off), and Phase 3 (Initiation of hip extension), which contributed to 23% +/- 7%, 16% +/- 4% and 61% +/- 6% of the SitTS cycle, respectively. The contribution of arms and legs during SitTS movement varied in different participants based on their legs' Medical Research Council (MRC) muscle grade. In particular, the applied arm forces start to increase clearly when the leg forces start to decline during standing. This finding is supported by the significantly reduced MMG signal indicating leg muscle fatigue and their reported feeling of tiredness.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education, Malaysia, University of Malaya through Fundamental Research Grant Scheme (FRGS) [FP002-2020], University of Malaya through Fundamental Research Grant Scheme (FRGS) [FRGS/1/2020/SKK0/UM/02/1] |
| Uncontrolled Keywords: | SPINAL-CORD-INJURY; INDIVIDUALS; STIMULATION; PERFORMANCE; MOVEMENT; PEOPLE; HIP |
| Subjects: | Q Science > QP Physiology |
| Divisions: | Faculty of Engineering > Biomedical Engineering Department Faculty of Medicine > Rehabilitation Medicine Department |
| Depositing User: | Ms Koh Ai Peng |
| Date Deposited: | 22 Oct 2024 06:38 |
| Last Modified: | 22 Oct 2024 06:38 |
| URI: | http://eprints.um.edu.my/id/eprint/46188 |
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