title: Comparative study on isokinetic capacity of knee and ankle joints by functional injury.
abstract: [Purpose] To collect basic data for exercise programs designed to enhance functional knee and ankle joint stability based on isokinetic measurement and muscle strength evaluations in normal and impaired functional states. [Subjects and Methods] Twenty-four subjects were randomly assigned to the athlete group and the control group (n = 12 each). Data were collected of isokinetic knee extensor and flexor strength at 60°/sec, 180°/sec, and 240°/sec and ankle plantar and dorsiflexor strength at 30°/sec and 120°/sec. [Results] Significant intergroup differences were observed in peak torque of the right extensors at 60°/sec, 180°/sec, and 240°/sec and the right flexors at 240°/sec. Significant differences were observed in peak torque/body weight in the right extensors at 60°/sec, 180°/sec, and 240°/sec and in the right flexors at 180°/sec and 240°/sec. Significant peak torque differences were noted in the left ankle joint dorsiflexor at 30°/sec and 120°/sec, right plantar flexor at 120°/sec, left plantar flexor at 30°/sec, left dorsiflexor at 30°/sec and 120°/sec, and right dorsiflexor at 120°/sec. [Conclusion] Isokinetic evaluation stimulates muscle contraction at motion-dependent speeds and may contribute to the development of intervention programs to improve knee and ankle joint function and correct lower-extremity instability.
authors.affiliation: Sport Science Institute, Incheon National University, Republic of Korea.
authors.forename: Kyoungkyu
authors.initials: K
authors.lastname: Jeon
authors.affiliation: Department of Physical Therapy, College of Health, Kyungwoon University, Republic of Korea.
authors.forename: Byoung-Do
authors.initials: BD
authors.lastname: Seo
authors.affiliation: Department of Physical Education, College of Education, Hankuk University of Foreign Studies, Republic of Korea.
authors.forename: Sang-Ho
authors.initials: SH
authors.lastname: Lee
keywords: Functional injury; Isokinetic; Knee and ankle joints