Evaluation of measurements of propulsion used to reflect changes in walking speed in individuals poststroke.
Evaluation of measurements of propulsion used to reflect changes in walking speed in individuals poststroke.
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DOI：
10.1016/j.jbiomech.2016.10.003
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发表时间：
2016-12-08
影响因子：
2.4
通讯作者：
Binder-Macleod, Stuart A.
中科院分区：
文献类型：
--
作者：
Hsiao, HaoYuan;Zabielski, Thomas M., Jr.;Palmer, Jacqueline A.;Higginson, Jill S.;Binder-Macleod, Stuart A.
最近针对中风后个体的康复方法集中于提高步行速度，因为这是与生活质量相关的可靠测量。以前的研究已经证明，推进力，用于推动身体前进的力量，决定了步行速度。然而，有几种不同的测量推进力的方法，没有研究确定哪种测量方法最能反映步行速度的差异。本研究的主要目的是确定中风后个体的推进力测量（1）与他们自己选择的步行速度最密切相关，（2）最能反映一次训练中步行速度的变化。参与者（N=43）与慢性中风后轻偏瘫走在自己选择的最大步行速度在跑步机上。分析了推进脉冲、峰值推进力和平均推进值（推进脉冲除以持续时间）。此外，还计算了每个参与者的节奏。皮尔逊相关系数被用来确定不同的测量推进与步行速度之间的关系，以及在推进与步行速度的变化变化。使用逐步线性回归来确定哪种推进测量最能预测步行速度和步行速度的变化。结果表明，所有3个测量的推进力与步行速度相关，与峰值推进力表现出最强的相关性。同样，当参与者增加步行速度时，峰值推进力的变化与步行速度的变化表现出最强的相关性。此外，将每个测量乘以节奏改善了相关性。本研究表明，测量峰值推进力和节奏可能是最合适的变量研究，以表征个人中风后推进。
Recent rehabilitation approaches for individuals poststroke have focused on improving walking speed because it is a reliable measurement that is associated with quality of life. Previous studies have demonstrated that propulsion, the force used to propel the body forward, determines walking speed. However, there are several different ways of measuring propulsion and no studies have identified which measurement best reflects differences in walking speed. The primary purposes of this study were to determine for individuals poststroke, which measurement of propulsion (1) is most closely related to their self-selected walking speeds and (2) best reflects changes in walking speed within a session. Participants (N=43) with chronic poststroke hemiparesis walked at their self-selected and maximal walking speeds on a treadmill. Propulsive impulse, peak propulsive force, and mean propulsive value (propulsive impulse divided by duration) were analyzed. In addition, each participant's cadence was calculated. Pearson correlation coefficients were used to determine the relationships between different measurements of propulsion versus walking speed as well as changes in propulsion versus changes in walking speed. Stepwise linear regression was used to determine which measurement of propulsion best predicted walking speed and changes in walking speed. The results showed that all 3 measurements of propulsion were correlated to walking speed, with peak propulsive force showed the strongest correlation. Similarly, when participants increased their walking speeds, changes in peak propulsive forces showed the strongest correlation to changes in walking speed. In addition, multiplying each measurement by cadence improved the correlations. The present study suggests that measuring peak propulsive force and cadence may be most appropriate of the variables studied to characterize propulsion in individuals poststroke.
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影响因子：
37.8
作者：
Go AS;Mozaffarian D;Roger VL;Benjamin EJ;Berry JD;Blaha MJ;Dai S;Ford ES;Fox CS;Franco S;Fullerton HJ;Gillespie C;Hailpern SM;Heit JA;Howard VJ;Huffman MD;Judd SE;Kissela BM;Kittner SJ;Lackland DT;Lichtman JH;Lisabeth LD;Mackey RH;Magid DJ;Marcus GM;Marelli A;Matchar DB;McGuire DK;Mohler ER 3rd;Moy CS;Mussolino ME;Neumar RW;Nichol G;Pandey DK;Paynter NP;Reeves MJ;Sorlie PD;Stein J;Towfighi A;Turan TN;Virani SS;Wong ND;Woo D;Turner MB;American Heart Association Statistics Committee and Stroke Statistics Subcommittee
通讯作者：
American Heart Association Statistics Committee and Stroke Statistics Subcommittee
paretic推进和尾肢角是中风后长距离步行功能的关键决定因素。
影响因子：
4.2
作者：
Awad LN;Binder-Macleod SA;Pohlig RT;Reisman DS
通讯作者：
Reisman DS
影响因子：
2.1
作者：
Goble, DJ;Marino, GW;Potvin, JR
通讯作者：
Potvin, JR
影响因子：
4.2
作者：
Dobkin, Bruce H.;Plummer-D'Amato, Prudence;Lee, Jihey
通讯作者：
Lee, Jihey
影响因子：
8.3
作者：
Bowden, MG;Balasubramanian, CK;Kautz, SA
通讯作者：
Kautz, SA