Walking speed and step length asymmetry modify the energy cost of walking after stroke.
Walking speed and step length asymmetry modify the energy cost of walking after stroke.
复制标题
DOI：
10.1177/1545968314552528
复制
发表时间：
2015-06
影响因子：
4.2
通讯作者：
Reisman DS
中科院分区：
文献类型：
--
作者：
Awad LN;Palmer JA;Pohlig RT;Binder-Macleod SA;Reisman DS
中风后行走的更高能量消耗与行走能力降低和社区参与减少有关。确定干预后步行速度和时空步态不对称性的改善对降低卒中后步行能量消耗的贡献。招募42名患有慢性轻偏瘫（卒中后> 6个月）的受试者参加12周的步行康复。计算训练前后步行的能量消耗、步行速度、步长、摆动时间和站立时间不对称性。序贯回归分析测试的横截面（即，训练前）和纵向（即，训练后的变化）之间的关系，步行的能量成本与速度和每个措施的不对称性。训练前步行速度（β =-0.506）和摆动时间不对称性（β = 0.403）预测训练前能量消耗（adjR 2 = 0.713，F（3，37）= 34.05，p <0.001）。相比之下，步行速度的变化（β = 0.340）和步长不对称性的变化（β = 0.934）预测了能量成本的变化，这些独立预测因子之间存在显著的相互作用（adjR 2 = 0.699，F（4，31）= 21.326，p <0.001）。适度的方向或幅度的训练前的不对称性是没有发现的。对于人在慢性期中风恢复，更快，更对称的步行干预后似乎是更积极的优势，而不仅仅是走得更快或更对称。这一发现具有重要的功能意义，步行的能量成本和社区步行参与之间的关系。
A higher energy cost of walking poststroke has been linked to reduced walking performance and reduced participation in the community. To determine the contribution of post-intervention improvements in walking speed and spatiotemporal gait asymmetry to the reduction of the energy cost of walking after stroke. Forty-two subjects with chronic hemiparesis (> 6 months poststroke) were recruited to participate in 12 weeks of walking rehabilitation. The energy cost of walking, walking speed, and step length, swing time, and stance time asymmetries were calculated pre- and posttraining. Sequential regression analyses tested the cross-sectional (ie, pretraining) and longitudinal (ie, posttraining changes) relationships between the energy cost of walking versus speed and each measure of asymmetry. Pretraining walking speed (β = −.506) and swing time asymmetry (β = .403) predicted pretraining energy costs (adjR2 = .713, F(3,37) = 34.05, p < .001). In contrast, change in walking speed (β = .340) and change in step length asymmetry (β = .934) predicted change in energy costs with a significant interaction between these independent predictors (adjR2 = .699, F(4,31) = 21.326, p < .001). Moderation by the direction or the magnitude of pretraining asymmetry was not found. For persons in the chronic phase of stroke recovery, faster and more symmetric walking after intervention appears to be more energetically advantageous than merely walking faster or more symmetric. This finding has important functional implications given the relationship between the energy cost of walking and community walking participation.
登录
查看更多内容
影响因子：
1.8
作者：
Hall, A. L.;Bowden, M. G.;Neptune, R. R.
通讯作者：
Neptune, R. R.
影响因子：
--
作者：
CAVAGNA, GA;HEGLUND, NC;TAYLOR, CR
通讯作者：
TAYLOR, CR
DOI：
10.1249/00005768-198205000-00012
发表时间：
1982-01-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
--
作者：
BORG, GAV
通讯作者：
BORG, GAV
DOI：
10.1097/00004356-199109000-00010
发表时间：
1991-01-01
期刊：
International journal of rehabilitation research. Internationale Zeitschrift fur Rehabilitationsforschung. Revue internationale de recherches de readaptation
影响因子：
--
作者：
Bohannon, R W;Horton, M G;Wikholm, J B
通讯作者：
Wikholm, J B
影响因子：
2.2
作者：
Michael, Kathleen;Macko, Richard F.
通讯作者：
Macko, Richard F.