J Korean Acad Rehabil Med Search


Journal of the Korean Academy of Rehabilitation Medicine 1999;23(2):310-315.
Quantitative Analysis of Tendon Reflexes of Upper Extremities in Normal Volunteers.
Yoon, Tae Sik , Kim, Jeong Ah
Department of Rehabilitation Medicine, Ewha Womans University College of Medicine.
정상 성인에서의 상지 T-반사의 정량적 분석
윤태식, 김정아
이화여자대학교 의과대학 재활의학과

The purpose of this study was to establish the normal values of tendon reflexes (T-reflex) in upper extremities of normal Korean adults.

T-reflex responses were recorded in 30 normal volunteers by delivering tendon taps with a hand operated electric reflex hammer. From 5 repeated trials of each subject, the shortest onset latency and duration, the largest peak to peak amplitude of compound muscle action potentials were chosen for representative values.


1) There was no significance in the side-to-side differences for all values.

2) Mean values of latency were 13.8⁑1.1 msec in males, 12.4⁑0.9 msec in females for biceps T-reflex and 13.0⁑1.1 msec in males, 11.3⁑1.0 msec in females for triceps T-reflex and there were significant differences between males and females.

3) Height and upper arm length showed a significant positive correlation with biceps and triceps T-reflex latency (p<0.001).

We believe that our results can be used as a guideline researching the tendon reflexes in upper extremities.

Key Words: Tendon reflexes in upper extremities, Electric reflex hammer, Normal values


Browse all articles >

Terms of Use   |   Privacy Polity
Editorial Office
Department of Rehabilitation Medicine, Seoul National University Hospital
101 Daehak-ro, Jongno-gu, Seoul, Korea
Tel: +82-10-8678-2671    Fax: +82-2-6072-5244    E-mail: edit@e-arm.org; edit.karm@gmail.com
Business Registration: 110-82-07460                

Copyright © 2024 by Korean Academy of Rehabilitation Medicine.

Developed in M2PI

Close layer