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근피로를 유발하는 운동강도 변화가 슬관절의 위치감각 인지에 미치는 영향 KCI 등재

The Effect of Graded Exercise-Induced Fatigue on Position Sense of the Knee

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  • URLhttps://db.koreascholar.com/Article/Detail/5722
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한국전문물리치료학회지 (Physical Therapy Korea)
한국전문물리치료학회 (Korean Research Society of Physical Therapy)
초록

It was recently reported that exercise-induced fatigue is related to joint position sense although some controversy remains. The purposes of this study were to examine the effect on the accuracy of reproducing the knee angles after a fatiguing isokinetic quadriceps exercise at four different levels (10%, 30%, 50%, and 70% of maximal force) and to find the optimal exercise level without causing knee joint proprioception impairment. Forty healthy women, ages 19 to 27, were randomly assigned to four experimental groups. Before and after the exercise, accuracy of positioning with respect to auditory feedback for specific angles was estimated by calculating the mean errors between specific angles and reproduction angles. Fatigue was measured by EMG signals displayed by a frequency spectrum analysis during the quadriceps exercise. Results showed that there was no significant difference in accuracy of the knee joint positioning sense following the exercises in group 1, group 2, and group 3 (10%, 30%, and 50% of maximal force, respectively); the exception being group 4 (70%). Fatigue level was significantly increased in group 4 but there were no significant increases of fatigue level in group 1, group 2, or group 3. The results concluded that the optimal exercise level to acquire the therapeutic exercise effectiveness without position sense impairment was at 50% of maximal force. Further studies using large sample size and patient groups with poor knee joint proprioception would be needed to confirm this conclusion and to clarify the possibility of clinical applications.

저자
  • 이충휘(연세대학교 보건과학대학 재활학과 및 보건과학연구소) | Yi Chung-hwi
  • 최종덕(연세대학교 대학원 재활학과 물리치료학전공) | Choi Jong-duk
  • 이강노(아산재단 서울 중앙병원 물리치료실) | Lee Kang-noh
  • 이동률(연세의료원 물리치료실) | Lee Dong-ryul
  • 최재명(연세대학교 재활학과 물리치료학전공) | Choi Jae-myung