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Journal of the Korean Academy of Rehabilitation Medicine 1997;21(5):942-949.
Pendulum Test Using Video-Based Two Dimensional Motion Analysis Program.
Yang, Seung Han , Choi, Eun Seok , Park, No Kyoung , Kim, Min Ki , Choi, Jang Hyu
1Department of Rehabilitation Medicine, The Catholic University of Korea, College of Medicine, Korea.
2Department of Electrical & Information Engineering, Korea University, College of Natural Science, Korea.
2차원 동작분석 프로그램을 이용한 진자검사
양승한, 최은석, 박노경, 김민기*, 최장휴
가톨릭대학교 의과대학 재활의학교실 및 고려대학교 자연과학대학 전자정보공학부*

The pendulum test, recognized as a reliable measure of spasticity, has been replaced in this study by a video-based two dimensional motion analysis system. Using twenty five patients with spasticity(21 males, 4 females; mean age 46.6 year-old) in their lower legs due to lesions affecting the central nervous system and twenty two persons without any evidence of hypertonia(all males; mean age 23.4 year-old), five parameters such as relaxation index(RI), amplitude ratio(AR), torque at maximal acceleration velocity, number of swing and swing time were obtained for the purpose of documenting the reliability of the video-based two dimensional motion analysis system for the evaluation of spasticity.

The values of RI(P<0.05), AR(P<0.01), and swing time(P<0.05) in patients with spasticity were significantly lower than control, whereas the value of torque in patients was significantly higher than control(P<0.01). Spearman's correlation coefficients of the RI(r=⁣0.70894, P<0.001), AR(r=⁣0.71832, P<0.001), number of swing(r=⁣0.59037, P<0.05) and swing time(r=⁣0.59648, P<0.01) showed a statistically significant negative correlation with the modified Ashworth scale, whereas that of torque(r=0.59037, P<0.01) showed a significant positive correlation.

In conclusion, a pendulum test using a video-based two dimensional motion analysis system is a simple, and a reliable method for the quantitative evaluation of spasticity.

Key Words: Spasticity, Pendulum test, Two dimensional motion analysis system, Relaxation index, Modified Ashworth scale


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