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Effects of strength and balance training on the structure of the aging brain.

Xinyu Liu·Sven Egger·Selin Scherrer·Tommaso Pavan·José P Marques·Ileana Jelescu·Benedikt Lauber·Wolfgang Taube·Lijing Xin
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Abstract

BACKGROUND: While it is established that motor training induces structural changes in the brains of young adults, structural adaptations in aging brains are less studied. METHODS: This randomized controlled study investigated the impact of long-term strength and balance training on the structural plasticity in 60 elderly adults (64 - 82 years old, 70.6 ± 4.7) using multi-modal neuroimaging. We compared the effects of three months of strength training to balance training of the same duration and to a passive control group. Voxel-based morphometry (VBM) and tract-based spatial statistics (TBSS) were used to assess grey matter (GM) and white matter (WM) plasticity. White matter tract integrity (WMTI) modelling was employed to explore the microstructural underpinnings of white matter alterations. RESULTS: We found that strength training was associated with changes in diffusion metrics consistent with white matter microstructural remodeling, specifically increased extra-axonal axial diffusivity in the bilateral inferior fronto-occipital and longitudinal fasciculi. Additionally, both balance and strength training mitigated reductions in axonal water fraction in the splenium of the corpus callosum and the right posterior corona radiata observed in the control group. CONCLUSION: These results underscore the potential relevance of strength and balance training to induce beneficial neural plasticity by counteracting aging-related demyelination in the corpus callosum and highlight the specific role of strength training in facilitating white matter reorganization in key transmission fiber pathways.

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HumansAgingResistance TrainingAgedFemaleWhite MatterPostural BalanceMaleBrainNeuronal PlasticityMiddle AgedAged, 80 and overDiffusion Tensor ImagingGray MatterBrain structureMotor trainingNeural plasticityNeuroimagingWhite matter microstructureJournal ArticleRandomized Controlled Trial

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Xinyu Liu, Sven Egger, Selin Scherrer, Tommaso Pavan, José P Marques, Ileana Jelescu, Benedikt Lauber, Wolfgang Taube, Lijing Xin. 2026-08-31. Effects of strength and balance training on the structure of the aging brain.. https://doi.org/10.1016/j.neuroimage.2026.122188

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Journal Article; Randomized Controlled Trial resourceAged subjectAged, 80 and over subjectAging subjectBrain subjectFemale subjectHumans subjectJournal Article subjectMale subjectMiddle Aged subjectNeuroimaging subjectPostural Balance subjectRandomized controlled trials study

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