Chinese Journal of Rehabilitation Theory and Practice ›› 2025, Vol. 31 ›› Issue (10): 1181-1187.doi: 10.3969/j.issn.1006-9771.2025.10.009

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Effect of functional electrical stimulation hand cycling on functional connection of brain networks in stroke patients: a study based on functional near-infrared spectroscopy

XU Sheng1, ZHANG Min1, YANG Qingqing1, WANG Qinglei2, GENG Ayan2, WANG Tong2, GUO Chuan2()   

  1. 1. Changzhou De'an Hospital, Changzhou, Jiangsu 213004, China
    2. The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
  • Received:2025-06-16 Revised:2025-09-07 Published:2025-10-25 Online:2025-11-10
  • Contact: GUO Chuan, E-mail: guochuan@njmu.edu.cn
  • Supported by:
    National Natural Science Foundation of China (Youth)(82302882);Changzhou Health Commission Science and Technology Project (Youth)(QN202336)

Abstract:

Objective To explore the potential central mechanisms of functional electrical stimulation (FES) hand cycling in promoting upper limb motor recovery after stroke.
Methods A total of 35 stroke patients hospitalized in the Rehabilitation Center of Changzhou De'an Hospital from May, 2023 to December, 2024 were enrolled. They sequentially completed 10-minute FES hand cycling and 10-minute sham stimulation (simple hand cycling) tasks. The task order was randomized via dice rolling. Functional near-infrared spectroscopy (fNIRS) was used to monitor real-time cerebral hemodynamic changes during both tasks to calculate the overall functional connectivity (FC) strength and the FC strength within regions of interest.
Results The overall FC strength was higher during the FES hand cycling task than during the sham task (t = 2.591, P < 0.05), as well as FC between the ipsilateral primary motor cortex (iM1) and ipsilateral somatosensory association cortex (iSAC), iM1 and contralateral somatosensory association cortex (cSAC), ipsilateral pre-motor and supplementary motor cortex (iPMC) and iSAC, iPMC and cSAC, iPMC and ipsilateral primary somatosensory cortex (iS1), iPMC and iM1, and contralateral pre-motor and supplementary motor cortex (cPMC) and iSAC (PFDR < 0.05).
Conclusion FES hand cycling can promote the cortical function remodeling between cerebral hemispheres and the affected hemisphere, to integrate sensory-motor function.

Key words: stroke, upper limb, motor function, functional electrical stimulation hand cycling, functional near-infrared spectroscopy, functional connection, cortical function remodeling

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