Gait asymmetries are exacerbated at faster walking speeds in individuals with acute anterior cruciate ligament reconstruction.
Gait asymmetries are exacerbated at faster walking speeds in individuals with acute anterior cruciate ligament reconstruction.
复制标题
DOI：
10.1002/jor.25117
复制
发表时间：
2022-01
期刊：
影响因子：
--
通讯作者：
Palmieri-Smith RM
中科院分区：
文献类型：
--
作者：
Garcia SA;Brown SR;Koje M;Krishnan C;Palmieri-Smith RM
先前的研究表明，与前十字韧带重建后的步行相比，对生物力学要求更高的任务(如楼梯下降、跳跃)会放大生物力学不对称性。然而，目前尚不清楚修改特定任务的限制条件，如行走速度是否也会在这一人群中引起更大的生物力学不对称。我们研究了控制步行速度对前交叉韧带重建患者和未损伤对照组的地面反作用力(GRF)不对称性的影响。30名前交叉韧带重建者(年龄=20.6±5.4岁，体重指数[BMI]=23.9±3.3 kg/m2)和15名对照组(年龄=23.1±4.5岁，体重指数=23.6±2.7 kg/m2)在仪表式跑台上进行了三种速度(100%、120%和80%自选速度)的测试。在每个速度下记录双侧垂直和后前部GRFs。GRF不对称性是通过在每个站立百分比从受伤肢体中减去未受伤的肢体来计算的。统计参数映射被用来评估速度对跨站姿的GRF不对称性的影响。我们发现，在前交叉韧带患者中，垂直和后部GRF不对称在较快的速度下加剧，在较慢的速度下减轻，但对照组没有(p<；0.05)。两组的前向GRF不对称在速度上没有差异(p>；0.05)。我们的结果表明，步行速度的增加放大了前交叉韧带重建患者的GRF不对称性。评估首选步行速度和快速步行速度可能有助于表征前交叉韧带重建患者的生物力学不对称性，这在较早的康复时间点可能有价值，因为此时跳跃和跑步等更困难的任务是不可行的。
Previous research suggests more biomechanically demanding tasks (e.g., stair descent, hopping) magnify biomechanical asymmetries compared with walking after anterior cruciate ligament (ACL) reconstruction. However, it is unclear if modifying task-specific constraints, like walking speed also elicits greater biomechanical asymmetries in this population. We examined the effects of manipulating walking speed on ground reaction force (GRF) asymmetries in individuals with ACL reconstruction and uninjured controls. Thirty individuals with ACL reconstruction (Age= 20.6 ± 5.4 yr., body mass index [BMI]= 23.9 ± 3.3 kg/m2) and fifteen controls (Age= 23.1 ± 4.5 yr., BMI= 23.6 ± 2.7 kg/m2) were tested on an instrumented treadmill at three speeds (100%, 120%, and 80% self-selected speed). Bilateral vertical and posterior-anterior GRFs were recorded at each speed. GRF asymmetries were calculated by subtracting the uninjured from the injured limb at each percent of stance. Statistical parametric mapping was used to evaluate the effects of speed on GRF asymmetries across stance. We found vertical and posterior GRF asymmetries were exacerbated at faster speeds and reduced at slower speeds in ACL individuals but not controls (p < 0.05). No differences in anterior GRF asymmetries were observed between speeds in either group (p > 0.05). Our results suggest increasing walking speed magnifies GRF asymmetries in individuals with ACL reconstruction. Evaluating both preferred and fast walking speeds may aid in characterizing biomechanical asymmetries in individuals with ACL reconstruction which may be valuable in earlier rehabilitative timepoints when more difficult tasks like hopping and running are not feasible.
登录
查看更多内容
影响因子：
2.1
作者：
Goble, DJ;Marino, GW;Potvin, JR
通讯作者：
Potvin, JR
影响因子：
2.1
作者：
Armitano-Lago C;Pietrosimone B;Davis-Wilson HC;Evans-Pickett A;Franz JR;Blackburn T;Kiefer AW
通讯作者：
Kiefer AW
影响因子：
2.4
作者：
Liu, May Q.;Anderson, Frank C.;Schwartz, Michael H.;Delp, Scott L.
通讯作者：
Delp, Scott L.
影响因子：
2.2
作者：
Georgoulis, Anastasios D;Moraiti, Constantina;Stergiou, Nicholas
通讯作者：
Stergiou, Nicholas
影响因子：
2.4
作者：
Chiu, Shiu-Ling;Chou, Li-Shan
通讯作者：
Chou, Li-Shan