Using multishell diffusion MRI and both tract-based spatial statistics (TBSS) and probabilistic tracking of specific tracts of interest, we evaluated the neural underpinnings of the impact of a six-month dance intervention (DI) on physical fitness and cognitive outcomes in nondemented seniors. The final cohort had 76 nondemented seniors, randomized into DI and control (life as usual) groups. Significant effects were observed between the DI and control groups in physical fitness measures and in attention. We detected associations between improved physical fitness and changes in diffusion tensor imagining (DTI) measures in the whole white matter (WM) skeleton and in the corticospinal tract and the superior longitudinal fascicle despite the fact that no significant differences in changes to the WM microstructure were found between the two groups.

中文翻译：

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多壳扩散 MRI 反映了舞蹈干预引起的体能改善

使用多壳扩散 MRI 和基于束的空间统计 (TBSS) 和特定感兴趣束的概率跟踪，我们评估了六个月的舞蹈干预 (DI) 对非痴呆老年人身体健康和认知结果影响的神经基础. 最后一组有 76 名未痴呆的老年人，随机分为 DI 组和对照组（如常生活）。在体能测量和注意力方面，DI 组和对照组之间观察到显着影响。我们检测到体能改善与整个白质 (WM) 骨骼、皮质脊髓束和上纵束中的弥散张量成像 (DTI) 测量值变化之间的关联，尽管 WM 微观结构的变化没有显着差异发现在两组之间。