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The Effect of female Hormone on Knee Joint Laxity

여성 호르몬이 무릎의 느슨함(laxity)에 미치는 영향

  • Park, Sang-Kyoon (Busan Economic Promotion Agency, Footwear Industrial Promotion Center)
  • 박상균 (부산경제진흥원 신발산업진흥센터)
  • Published : 2009.03.30

Abstract

The purpose of this study was to determine whether hormone levels change knee laxity in healthy females. Twenty three healthy females were recruited for the study. Serum estradiol and progesterone levels were recorded three times during the subjects' menstrual cycles. The first measurements were taken between day 3 and 7 of the follicular phase and the second data collection coincided with ovulation, 24 to 48 hours after the estrogen surge detected by an ovulation predictor kits. Based on a 28 day cycle, the third data collection occurred approximately 7 days later during the luteal phase. Knee joint laxity was recorded at the same intervals with a KT 2000 arthometer. Hormone levels and phases were compared to passive knee joint laxity with multiple regression analysis. Estradiol and progesterone levels differed significantly across the three tests. Knee joint laxity increased during ovulation. Based on a multiple regression analysis, estradiol and progesterone levels predicts 77.9% to 80.9% of the laxity at 20lb and 30lb loads. An antagonistic relationship between estradiol and progesterone was found when testing for knee laxity. Serum hormone levels have moderate power in predicting knee joint laxity. Individual hormonal profiling in female athletes would allow researchers to access the structural properties of the ACL, such as the laxity which may provide beneficial information to understand female ACL injury mechanism in sports activity.

연구의 목적은 여성 호르몬 변화가 무릎의 느슨함에 영향을 미치는지에 관한 연구가 실시되었다. 23명의 여성피험자들이 본 실험에 참여하였다. 각 피험자의 호르몬 주기 중에 세 차례에 걸쳐 에스트라디올과 프로제스트론을 혈액들 통해서 산출되었다. 첫 번째 측정은 호르몬주기의 초기 중 3일과 7일 사이에, 두 번째 측정은 배란측정기를 통해서 에스트로겐의 최고치 측정 후 24시간에서 48시간 후인 배란기에 실시되었다. 세 번째 측정은 28일의 평균 호르몬주기를 기준으로 두 번째 측정 후 약 7일이 지난 후에 실시되었다. 무릎 관절의 느슨함 정도가 측정기기(KT-2000)를 통해서 호르몬 수치와 함께 동시에 측정되었다. 다중회귀분석을 통해서 호르몬의 수치와 무릎의 느슨함 정도가 각 시기별로 비교되었다. 호르몬의 수치들은 세 차례의 시기 간에 차이가 있었다. 무릎의 느슨함은 각각 호르몬 배란기 동안에 증가를 나타내었다. 다중 회귀방정식을 통해서 20lb좌 30lb의 부하 수준에서 77.9%에서 80.9%4의 예측수준을 나타내었고 두 호르몬 간에 관계가 관절의 느슨함에 상호 상쇄적인 영향을 미치는 것으로 나타났다. 따라서 호르몬의 수치가 무릎의 느슨함을 적절하게 예측할 수 있었다. 이러한 결과를 통해서 개인의 호르몬 수치의 프로파일을 통해서 관절의 느슨함과 같은 관절의 특성을 이해하고 이를 통해서 스포츠 상황에서의 관절상해에 관한 유용한 정보를 제공할 수 있겠다.

Keywords

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