Effect of passive stepping on the H-reflex in the wrist flexor

T. Kitamura, T. Nakajima, K. Kamibayashi, Shinichirou Yamamoto, M. Akai, K. Nakazawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It is possible for patients with spinal cord injury and stroke to regain locomotor-like activity with intense step training on a treadmill. However, the neural mechanisms underlying the reattainment of locomotor activity are unknown. In particular, the principles governing interlimb coordination is not known. Therefore, we investigated modulation of the H-reflex..in the flexor carpi radialis (FCR) of 10 subjects.. during passive stepping of the leg. Passive stepping tasks were performed with the aid of a robotic gait trainer system (Lokomat). The H-reflex in the FCR was elicited by electrical stimulation of the median nerve at the elbow level and recorded during 10 different phases of the walking cycle and static standing condition. The results showed that passive stepping significantly suppresses the FCR H-reflex amplitude as compared with static standing condition. These results suggest that movement-related afferent leg feedback mediates suppression of forearm H-reflex during passive stepping.

Original languageEnglish
Title of host publicationIFMBE Proceedings
Pages201-202
Number of pages2
Volume25
Edition9
DOIs
Publication statusPublished - 2009
EventWorld Congress on Medical Physics and Biomedical Engineering: Neuroengineering, Neural Systems, Rehabilitation and Prosthetics - Munich
Duration: 2009 Sep 72009 Sep 12

Other

OtherWorld Congress on Medical Physics and Biomedical Engineering: Neuroengineering, Neural Systems, Rehabilitation and Prosthetics
CityMunich
Period09/9/709/9/12

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Exercise equipment
Regain
Robotics
Modulation
Feedback

Keywords

  • H-reflex
  • Interlimb coordination
  • Passive stepping

ASJC Scopus subject areas

  • Biomedical Engineering
  • Bioengineering

Cite this

Kitamura, T., Nakajima, T., Kamibayashi, K., Yamamoto, S., Akai, M., & Nakazawa, K. (2009). Effect of passive stepping on the H-reflex in the wrist flexor. In IFMBE Proceedings (9 ed., Vol. 25, pp. 201-202) https://doi.org/10.1007/978-3-642-03889-1-54

Effect of passive stepping on the H-reflex in the wrist flexor. / Kitamura, T.; Nakajima, T.; Kamibayashi, K.; Yamamoto, Shinichirou; Akai, M.; Nakazawa, K.

IFMBE Proceedings. Vol. 25 9. ed. 2009. p. 201-202.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kitamura, T, Nakajima, T, Kamibayashi, K, Yamamoto, S, Akai, M & Nakazawa, K 2009, Effect of passive stepping on the H-reflex in the wrist flexor. in IFMBE Proceedings. 9 edn, vol. 25, pp. 201-202, World Congress on Medical Physics and Biomedical Engineering: Neuroengineering, Neural Systems, Rehabilitation and Prosthetics, Munich, 09/9/7. https://doi.org/10.1007/978-3-642-03889-1-54
Kitamura T, Nakajima T, Kamibayashi K, Yamamoto S, Akai M, Nakazawa K. Effect of passive stepping on the H-reflex in the wrist flexor. In IFMBE Proceedings. 9 ed. Vol. 25. 2009. p. 201-202 https://doi.org/10.1007/978-3-642-03889-1-54
Kitamura, T. ; Nakajima, T. ; Kamibayashi, K. ; Yamamoto, Shinichirou ; Akai, M. ; Nakazawa, K. / Effect of passive stepping on the H-reflex in the wrist flexor. IFMBE Proceedings. Vol. 25 9. ed. 2009. pp. 201-202
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