Sagittal plane walking biomechanics in individuals with knee osteoarthritis after quadriceps strengthening
Sagittal plane walking biomechanics in individuals with knee osteoarthritis after quadriceps strengthening
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DOI：
10.1016/j.joca.2018.12.026
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发表时间：
2019-05-01
影响因子：
7
通讯作者：
Pietrosimone, B.
中科院分区：
文献类型：
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作者：
Davis, H. C.;Luc-Harkey, B. A.;Pietrosimone, B.
目的：比较下肢强化干预后增加股四头肌力量的膝关节骨关节炎（KOA）参与者的矢状面行走步态生物力学（应答者）和那些在相同的强化方案后没有增加强度的人（无反应者）在基线和下肢强化协议之后。设计：53名影像学KOA受试者（47%为女性，62.3 ± 7.1岁，BMI = 28.5 ± 3.9 kg/m2）在28天内参加了10次下肢强化训练。在基线和强化干预后4周收集患肢的最大等长股四头肌力量和步行步态生物力学。响应者被分类为增加的四头肌力量大于先前研究中确定的四头肌力量最小可检测变化（MDC）（29 Nm）的95%置信区间（CI）上限的个体。采用2 × 2函数方差分析评价组间效应（应答者和非应答者）和时间（基线和4周）对膝关节屈曲角（KFA）、垂直地面反作用力（vGRF）和内部膝关节伸展力矩（KEM）的时间标准化波形的影响。KFA的显著组x时间相互作用表明，在基线时站立的前半部分KFA更大，在4- 10时站立的后半部分膝关节伸展更大。反应者与非反应者相比。有没有显着的组x时间的相互作用vGRF或内部KEM.Conclusions：股四头肌加强可用于刺激KFA在个人与KOA的小变化。(C)2019国际骨关节炎研究学会。由爱思唯尔有限公司出版。保留所有权利。
Objective: To compare sagittal walking gait biomechanics between participants with knee osteoarthritis (KOA) who increased quadriceps strength following a lower-extremity strengthening intervention (responders) and those who did not increase strength following the same strengthening protocol (non-responders) both at baseline and following the lower extremity strengthening protocol.Design: Fifty-three participants with radiographic KOA (47% female, 62.3 +/- 7.1 years, BMI = 28.5 +/- 3.9 kg/m(2)) were enrolled in 10 sessions of lower extremity strengthening over a 28-day period. Maximum isometric quadriceps strength and walking gait biomechanics were collected on the involved limb at baseline and 4-weeks following the strengthening intervention. Responders were classified as individuals who increased quadriceps strength greater than the upper limit of the 95% confidence interval (CI) for the minimal detectable change (MDC) in quadriceps strength (29 Nm) determined in a previous study. 2 x 2 functional analyses of variance were used to evaluate the effects of group (responders and non-responders) and time (baseline and 4-weeks) on time-normalized waveforms for knee flexion angle (KFA), vertical ground reaction force (vGRF), and internal knee extension moment (KEM).Results: A significant group x time interaction for KFA demonstrated greater KFA in the first half of stance at baseline and greater knee extension in the second half of stance at 4-weeks in responders compared to non-responders. There was no significant group x time interaction for vGRF or internal KEM.Conclusions: Quadriceps strengthening may be used to stimulate small changes in KFA in individuals with KOA. (C) 2019 Osteoarthritis Research Society International. Published by Elsevier Ltd. All rights reserved.