Center of pressure predicts Intra-limb compensatory patterns that shift demands away from knee extensors during squatting.
Center of pressure predicts Intra-limb compensatory patterns that shift demands away from knee extensors during squatting.
复制标题
压力中心预测了limb内部补偿模式，这些模式会在蹲下期间转移从膝盖伸肌上移动。
DOI：
10.1016/j.jbiomech.2020.110008
复制
发表时间：
2020-10-09
影响因子：
2.4
通讯作者：
Sigward SM
中科院分区：
文献类型：
--
作者：
Chan MS;Sigward SM
前交叉韧带重建（ACLr）后膝关节伸肌力矩持续不足可能归因于临床难以量化肢体间和肢体内代偿。力板衍生压力中心（CoPpos）和垂直力（vGRF）可能为本组患者的肢体和关节负荷损伤提供有价值的信息。本研究旨在确定：1)深蹲时CoPpos测量值与肢体内伸肌力矩分布之间的关系，以及2)使用CoPpos和vGRF评估aclr后膝关节伸肌力矩缺陷的效用。24例患者在aclr术后142±22.5天进行双侧深蹲。利用三维运动学和GRF计算踝关节（aEXT）、膝关节（kEXT）和髋关节（hEXT）伸肌力矩。在kEXT峰处鉴定了Moments、CoPpos和vGRF。肢体内力矩分布采用hEXT/kEXT和aEXT/kEXT比值进行表征。线性回归分析CoPpos与hEXT/kEXT和aEXT/kEXT之间的关系。逐步回归确定肢间CoPpos比值是否预测了hEXT/kEXT和aEXT/kEXT的肢间比值。逐步回归确定肢间CoPpos和vGRF比值是否预测肢间kEXT比值。结果发现，CoPpos预测肢体内矩分布（hEXT/kEXT和aEXT/kEXT）；更多的前CoPpos与髋部和踝关节相对于膝盖的高力矩有关。此外，肢间CoPpos比值预测了hEXT/kEXT和aEXT/kEXT的肢间比值。肢间CoPpos（52%）和vGRF（18%）比值解释了肢间kEXT比值方差的70% （R2=0.70, p <0.001）。这些数据表明，力板衍生的CoPpos和vGRF对于检测aclr后个体的膝关节伸肌力矩缺陷可能很重要。
The persistence of knee extensor moments deficits following anterior cruciate ligament reconstruction (ACLr) may be attributed to difficulty quantifying inter- and intra-limb compensations clinically. Force plate derived center of pressure (CoPpos) and vertical force (vGRF) may provide valuable information regarding limb and joint loading impairments in this group. This study aimed to determine the: 1) relationship between measures CoPpos and intra-limb extensor moment distribution during a squat, and 2) utility of using CoPpos and vGRF to estimate knee extensor moment deficits post-ACLr. Twenty-four individuals, 142±22.5 days post-ACLr, performed bilateral squats. Ankle (aEXT), knee (kEXT) and hip (hEXT) extensor moments were calculated using three-dimensional kinematics and GRF. Moments, CoPpos and vGRF were identified at peak kEXT. Intra-limb moment distribution was characterized using hEXT/kEXT and aEXT/kEXT ratios. Linear regressions analyzed relationships between CoPpos and hEXT/kEXT and aEXT/kEXT. Stepwise regressions determined if between-limb CoPpos ratio predicted between-limb ratios of hEXT/kEXT and aEXT/kEXT. Stepwise regression determined if between-limb CoPpos and vGRF ratios predicted between-limb kEXT ratio. Results found that CoPpos predicts intra-limb moment distribution (hEXT/kEXT and aEXT/kEXT); more anterior CoPpos related to higher moments at the hip and ankle relative to the knee. In addition, between-limb CoPpos ratio predicts between-limb ratio of hEXT/kEXT and aEXT/kEXT ratios. Together between-limb CoPpos (52%) and vGRF (18%) ratios explained 70% of the variance in between-limb kEXT ratios (R2=0.70, p <0.001). These data suggest that force plate derived CoPpos and vGRF may be important for detection of knee extensor moment deficits in individuals post-ACLr.
登录
查看更多内容
DOI：
10.1097/phm.0000000000000369
发表时间：
2016-04-01
影响因子：
3
作者：
Labanca, Luciana;Laudani, Luca;Macaluso, Andrea
通讯作者：
Macaluso, Andrea
影响因子：
6.1
作者：
Sigward, Susan M.;Chan, Ming-Sheng M.;Pratt, Kristamarie A.
通讯作者：
Pratt, Kristamarie A.
影响因子：
6.1
作者：
Waters, Eric
通讯作者：
Waters, Eric
影响因子：
1.7
作者：
Kernozek, Thomas W.;Gheidi, Naghmeh;Torry, Michael R.
通讯作者：
Torry, Michael R.
影响因子：
5.1
作者：
Roos, Paulien E.;Button, Kate;van Deursen, Robert W. M.
通讯作者：
van Deursen, Robert W. M.