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首页> 外文学位 >The influence of heel height on sagittal plane knee kinematics during landing tasks in recreationally active collegiate females.
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The influence of heel height on sagittal plane knee kinematics during landing tasks in recreationally active collegiate females.

机译：在活跃于休闲活动的大学女性中，着陆任务期间脚跟高度对矢状面膝关节运动学的影响。

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摘要

The purpose of this study was to determine if varying heel lift heights added to athletic shoe wear would alter sagittal plane knee kinematics when landing from jumping maneuvers. The hypothesis was that increased heel height would increase knee flexion at initial contact (KAIC), increase the peak knee flexion angle (KAPeak), and slow the rate of knee excursion (RKE). Fifty recreationally active, college-age females participated. Subjects performed two single-limb landing tasks: a forward hop and a jump-landing maneuver. Each participant performed five repetitions of each jump while wearing three different heel lifts placed on the under-side of a standardized athletic shoe: 0mm, 12mm, or 24mm lift heights. Dependent measures were KAIC, KAPeak, and RKE. Knee angle was measured using an electrogoniometer synchronized with a floor-mounted force plate. Raw data were acquired and filtered with a software acquisition and analysis system. Separate repeated measures ANOVAs were utilized to determine the influence of heel height on the dependent measures. Post hoc paired t-tests were performed when appropriate. All differences were considered to be statistically significant if p0.05 p0.017 with Bonferroni correction.Forward hop task: Significant main effects were found for KAIC (p.001), KAPeak (p=.014), and RKE (p=.019). KAIC increased from the 0mm lift condition to the 24mm lift(p.001), but not the 12mm lift (p=.423). An increase was also noted between the 12mm and 24mm lift conditions (p=.003). KAPeak increased from the 0mm lift condition to the 24mm lift (p=.004), but not to the 12mm lift (p=.282). The RKE did not change from the 0mm to the 12 or 24mm lift conditions (p=.351 and p=.086, respectively). However, there was a significant increase from the 12mm to the 24mm lift (p=.004). Jump-landing task: The data demonstrated no significant changes in KAIC (p=.531), KAPeak (p=.741), or the RKE (p=.190) from 0mm to either the 12mm or 24mm heel lift conditions. The addition of a 24 mm heel lift to an athletic shoe significantly alters KAIC, KAPeak, and RKE as compared to baseline measures when performing a forward hop maneuver. However, a 12 mm lift did not alter these sagittal plane knee kinematics. There is no change noted from baseline when performing a jump landing maneuver with either a 12mm or 24mm lift.
机译：这项研究的目的是确定从跳跃动作着陆时，增加运动鞋穿着的脚跟抬高高度是否会改变矢状面膝关节运动学。假说是，脚跟高度的增加会增加初次接触时的膝盖屈曲度（KAIC），峰值膝盖屈曲角（KAPeak）并减慢膝盖偏移率（RKE）。五十名娱乐活动活跃的大学年龄女性参加了比赛。受试者执行了两个单肢着陆任务：前跳和跳跃着陆动作。每位参与者在穿着标准运动鞋底侧的三种不同的脚跟举升装置时，每次跳高进行五次重复：举升高度为0mm，12mm或24mm。相关措施包括KAIC，KAPeak和RKE。使用与地面安装的测力计同步的电子测角仪测量膝角。原始数据已获取，并使用软件获取和分析系统进行了过滤。使用单独的重复测量方差分析确定脚跟高度对相关测量的影响。适当时进行事后配对t检验。如果使用Bonferroni校正p <0.05 p <0.017，则所有差异均具有统计学意义。前跳任务：发现KAIC（p <001），KAPeak（p = .014）和RKE（p =。 019）。 KAIC从0mm提升条件增加到24mm提升条件（p <001），但没有增加12mm提升条件（p = .423）。在12mm和24mm的升程条件之间也发现有所增加（p = .003）。 KAPeak从0mm提升条件提高到24mm提升条件（p = .004），但没有提高到12mm提升条件（p = .282）。 RKE从0mm提升到12mm或24mm提升条件（分别为p = .351和p = .086）。但是，从12mm提升到24mm则有显着增加（p = .004）。跳跃着陆任务：数据表明，从0mm到12mm或24mm足跟抬起条件，KAIC（p = .531），KAPeak（p = .741）或RKE（p = .190）均无显着变化。与执行前跳动作时的基线测量相比，在运动鞋上增加24 mm的后跟抬升力会显着改变KAIC，KAPeak和RKE。但是，抬升12 mm不会改变这些矢状面的膝关节运动学。当以12mm或24mm的升力执行跳跃着陆操纵时，与基线相比没有任何变化。

著录项

  • 作者

    Lindenberg, Kelly M.;

  • 作者单位

    Duquesne University.;

  • 授予单位 Duquesne University.;
  • 学科 Health Sciences Rehabilitation and Therapy.Biophysics Biomechanics.Health Sciences Recreation.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 135 p.
  • 总页数 135
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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