From muscle properties to human performance, using magnetic resonance.
From muscle properties to human performance, using magnetic resonance.
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利用磁共振从肌肉特性到人类表现。
DOI：
10.1093/gerona/50a.special_issue.35
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Odderson,IR
中科院分区：
文献类型：
--
作者：
Conley,KE;Cress,ME;Jubrias,SA;Esselman,PC;Odderson,IR
我们的目标是展示肌肉特性如何用于了解老年人的运动能力限制。我们表明，磁共振（MR）成像和光谱是有用的非侵入性表征肌肉在体内的结构和能量特性。肌肉体积和横截面积的测定是很容易和快速完成的应用定量形态学方法的MR图像。新的磁共振波谱技术提供了一个非侵入性的“活检”的氧化，糖酵解和收缩能力的肌肉纤维。我们展示了MR测量的结构和能量特性如何用于定义肌肉的功能能力以及这种能力对整个身体性能的贡献（例如，Vo2max）。最后，我们将这些肌肉特性和性能的实验室测量与对老年人日常生活中的功能有意义的活动相关联，例如持续步行和爬楼梯。
Our goal is to show how muscle properties can be used to understand the exercise performance limitations of the elderly. We show that magnetic resonance (MR) imaging and spectroscopy are useful for noninvasively characterizing the structural and energetic properties of muscle in vivo. Determination of muscle volume and cross-sectional area is easily and rapidly accomplished by applying quantitative morphometric methods to MR images. New MR spectroscopic techniques provide a noninvasive “biopsy” of the oxidative, glycolytic, and contractile capacities of muscle fibers. We show how the structural and energetic properties measured by MR can be used to define the functional capacity of muscle and the contribution of this capacity to the performance of the whole body (e.g., Vo2max). Finally, we relate these laboratory measures of muscle properties and performance to activities meaningful to the functioning of the elderly in everyday life, such as sustained walking and stair climbing.