Patellofemoral Joint Loading in Forward Lunge With Step Length and Height Variations.

IF 1.1 4区医学 Q4 ENGINEERING, BIOMEDICAL

Journal of Applied Biomechanics Pub Date : 2022-06-13 DOI:10.1123/jab.2021-0313

R. Escamilla, N. Zheng, T. MacLeod, R. Imamura, Shangcheng Wang, K. Wilk, Kyle Yamashiro, G. Fleisig

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引用次数: 1

Abstract

The objective was to assess how patellofemoral loads (joint force and stress) change while lunging with step length and step height variations. Sixteen participants performed a forward lunge using short and long steps at ground level and up to a 10-cm platform. Electromyography, ground reaction force, and 3D motion were captured, and patellofemoral loads were calculated as a function of knee angle. Repeated-measures 2-way analysis of variance (P < .05) was employed. Patellofemoral loads in the lead knee were greater with long step at the beginning of landing (10°-30° knee angle) and the end of pushoff (10°-40°) and greater with short step during the deep knee flexion portion of the lunge (50°-100°). Patellofemoral loads were greater at ground level than 10-cm platform during lunge descent (50°-100°) and lunge ascent (40°-70°). Patellofemoral loads generally increased as knee flexion increased and decreased as knee flexion decreased. To gradually increase patellofemoral loads, perform forward lunge in the following sequence: (1) minimal knee flexion (0°-30°), (2) moderate knee flexion (0°-60°), (3) long step and deep knee flexion (0°-100°) up to a 10-cm platform, and (4) long step and deep knee flexion (0°-100°) at ground level.

查看原文本刊更多论文

在步长和步高变化的前弓步中髌股关节负荷。

目的是评估在跨步长度和跨步高度变化时，髌股负荷（关节力和应力）如何变化。16名参与者在地面和10厘米的平台上用长短步进行了向前弓步。捕捉肌电图、地面反作用力和三维运动，并计算髌股负荷作为膝关节角度的函数。采用重复测量双向方差分析（P＜0.05）。在着地开始（10°-30°膝角）和蹬出结束（10°-40°）时，主膝的髌股负荷随着长步伐而增大，在弓步的膝深屈曲部分（50°-100°），随着短步伐而增大。在弓步下降（50°-100°）和弓步上升（40°-70°）期间，地面上的髌股负荷大于10cm平台。髌股负荷通常随着膝关节屈曲的增加而增加，随着膝关节弯曲的减少而减少。为了逐渐增加髌股关节负荷，按以下顺序向前弓步：（1）最小膝关节屈曲（0°-30°），（2）中等膝关节屈曲，（3）10 cm平台上的长步和深膝屈曲（0℃-100°），以及（4）地面长步和膝关节深屈曲（0℉-100°）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Applied Biomechanics 医学-工程：生物医学

CiteScore

2.00

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The mission of the Journal of Applied Biomechanics (JAB) is to disseminate the highest quality peer-reviewed studies that utilize biomechanical strategies to advance the study of human movement. Areas of interest include clinical biomechanics, gait and posture mechanics, musculoskeletal and neuromuscular biomechanics, sport mechanics, and biomechanical modeling. Studies of sport performance that explicitly generalize to broader activities, contribute substantially to fundamental understanding of human motion, or are in a sport that enjoys wide participation, are welcome. Also within the scope of JAB are studies using biomechanical strategies to investigate the structure, control, function, and state (health and disease) of animals.