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Journal of the Korean Academy of Rehabilitation Medicine 2003;27(5):764-773.
Normative Data of Functional Hamstring/Quadriceps Ratios by Age Based on Isokinetic Exercise Testing.
Han, Tai Ryoon , Kim, Il Soo , Kim, Jung Hwan , Kim, You Soo
Department of Rehabilitation Medicine, Seoul National University College of Medicine, Korea. view2001@medimail.co.kr
슬관절의 등속성 최대 우력 검사를 통한 연령대별 기능적 굴신근력비
한태륜, 김일수, 김정환, 김유수
서울대학교 의과대학 재활의학교실
Abstract
Objective
We tested peak torques of knee extensors and knee flexors using an isokinetic dynamometer (Cybex model 770) in middle-aged and aged populations, and calculated functional hamstring: quadriceps ratios (H/Q ratios) and conventional hamstring: quadriceps ratios. We present the normative data of these parameters in decade age groups for both sexes.


Method
Using an isokinetic dynamometer we determined the peak torques of knee extensors and knee flexors at angular velocities of 30, 60 and 180 degrees/sec in normal people (120 males, 154 females in the age range 31 to 70 years) and using these peak torque values to calculate functional H/Q ratios and conventional H/Q ratios.


Results
Normative data were presented. As age increased, the magnitudes of the peak torques of most knee flexors and knee extensors decreased, but conventional and functional H/Q ratios were not found to be significantly correlated with age in either sex.


Conclusion
Normative data by decade age in both sexes were obtained. It is hoped that this data will be beneficial for the testing of knee joint function.

Key Words: Normative data, Functional Hamstring/Quadriceps ratio, Isokinetic,
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