Evaluation of the Thigh Muscles after Knee Exercise on a Cybex II

Masamichi Hayashi, Shiro Hanakawa, Masuo Senda, Yasuhiro Takahara

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We investigated the degree of local heat and swelling of the thigh muscles produced by exercise. Eleven university athletes aged from 19 to 23 years old performed isokinetic exercise of the right knee on a Cybex II. Then serial determination of thigh circumference and thigh temperature (up to 120 min after exercise) as well as serial magnetic resonance (MR) imaging (up to 60 min after exercise) was performed on both thighs. The circumference of the right thigh peaked at 5.6 ± 2.1 min after exercise and returned to normal at 38.6 ± 9.2 min. The temperature of the right thigh peaked at 14.2 ± 5.7 min after exercise and was not normalized after 120 min except in two subjects. T2-weighted MR images showed a marked increase in the signal intensity of the right knee flexor and extensor muscles. The signal intensity peaked immediately after exercise and subsequently decreased gradually but did not return to normal after 60 min in some muscles. Changes in the thigh circumference were closely correlated with changes in the MR findings. The changes in the thigh muscles after knee exercise could be demonstrated using MR imaging, thigh circumference, and thigh temperature data. These parameters may provide indicators for managing muscle fatigue and recovery.

Original languageEnglish
Pages (from-to)155-160
Number of pages6
JournalActa Medica Okayama
Volume52
Issue number3
Publication statusPublished - Jun 1998

Fingerprint

Thigh
Muscle
Magnetic resonance
Knee
Exercise
Muscles
Imaging techniques
Temperature
Swelling
Magnetic Resonance Spectroscopy
Magnetic Resonance Imaging
Fatigue of materials
Recovery
Muscle Fatigue
Athletes
Hot Temperature

Keywords

  • Cybex II
  • Knee exercise
  • Magnetic resonance imaging
  • Thigh muscles

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Hayashi, M., Hanakawa, S., Senda, M., & Takahara, Y. (1998). Evaluation of the Thigh Muscles after Knee Exercise on a Cybex II. Acta Medica Okayama, 52(3), 155-160.

Evaluation of the Thigh Muscles after Knee Exercise on a Cybex II. / Hayashi, Masamichi; Hanakawa, Shiro; Senda, Masuo; Takahara, Yasuhiro.

In: Acta Medica Okayama, Vol. 52, No. 3, 06.1998, p. 155-160.

Research output: Contribution to journalArticle

Hayashi, M, Hanakawa, S, Senda, M & Takahara, Y 1998, 'Evaluation of the Thigh Muscles after Knee Exercise on a Cybex II', Acta Medica Okayama, vol. 52, no. 3, pp. 155-160.
Hayashi M, Hanakawa S, Senda M, Takahara Y. Evaluation of the Thigh Muscles after Knee Exercise on a Cybex II. Acta Medica Okayama. 1998 Jun;52(3):155-160.
Hayashi, Masamichi ; Hanakawa, Shiro ; Senda, Masuo ; Takahara, Yasuhiro. / Evaluation of the Thigh Muscles after Knee Exercise on a Cybex II. In: Acta Medica Okayama. 1998 ; Vol. 52, No. 3. pp. 155-160.
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