Muscle volume as a predictor of maximum force generating ability in the plantar flexors post-stroke.
Muscle volume as a predictor of maximum force generating ability in the plantar flexors post-stroke.
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DOI：
10.1002/mus.23835
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发表时间：
2013-12
期刊：
影响因子：
3.4
通讯作者：
Binder-Macleod, Stuart A.
中科院分区：
文献类型：
--
作者：
Knarr, Brian A.;Ramsay, John W.;Buchanan, Thomas S.;Higginson, Jill S.;Binder-Macleod, Stuart A.
中风后肌肉无力通常被认为是自主活动减少和最大发力能力（MFGA）下降的结果。我们评估了使用磁共振成像（MRI）获得的肌肉体积的能力，以估计中风后个体足底屈肌群的MFGA。MRI测量了17例脑卒中后偏瘫患者足底屈肌群的肌肉体积。采用改进的爆裂叠加试验测量MVC并预测足底屈肌的MFGA。虽然通过MRI获得的肌肉体积提供了肌肉总体大小的信息，但它高估了麻痹性足底屈肌的发力能力。结果表明，mri得出的肌肉体积低估了中风后个体的功能损害。有趣的是，中枢激活率与最大意志收缩力有很强的关系。
Post-stroke muscle weakness is commonly thought to be the result of a combination of decreased voluntary activation and decreased maximum force generating ability (MFGA). We assessed the ability of muscle volumes obtained using magnetic resonance imaging (MRI) to estimate the MFGA of the plantar flexor muscle group in individuals post-stroke. MRI was used to measure muscle volume for the plantar flexor muscle group for 17 individuals with post-stroke hemiparesis. A modified burst superimposition test was used to measure MVC and predict the MFGA of the plantar flexors. While muscle volume obtained via MRI provided information on the overall size of muscle, it overestimated the force generating ability of the paretic plantar flexors. Results suggest that MRI-derived muscle volume underestimates the functional impairment in individuals post-stroke. Interestingly, the central activation ratio had a strong relationship with the maximum volitional force of contraction.
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影响因子：
3.3
作者：
Ross, R;Rissanen, J;Shragge, P
通讯作者：
Shragge, P
影响因子：
2.4
作者：
Eng, Carolyn M.;Abrams, Geoff D.;Ward, Samuel R.
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Ward, Samuel R.
影响因子：
1.8
作者：
Nadeau, S;Gravel, D;Bourbonnais, D
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Bourbonnais, D
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3
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Fimland, Marius Steiro;Moen, Per Marius R.;Hill, Tessa;Gjellesvik, Tor Ivar;Torhaug, Tom;Helgerud, Jan;Hoff, Jan
通讯作者：
Hoff, Jan
影响因子：
3.3
作者：
Maganaris, CN;Baltzopoulos, V;Sargeant, AJ
通讯作者：
Sargeant, AJ