Abstract
Objectives
Preclinical and non-medicinal interventions are essential for preventing and treating cognitive decline in patients with mild cognitive impairment (MCI). Whole-body vibration (WBV) exercise is conducted on a platform that generates vertical sinusoidal vibrations, and WBV training may improve regional cerebral blood flow (rCBF) and cognitive function, however, the underlying mechanism remains unclear. The aim of the present study was to investigate whether WBV exercise and a 24-week WBV training protocol increased rCBF and enhanced cognitive function in patients with amnestic MCI (aMCI).
Methods
[99mTc]-ECD and SPECT studies were performed on 16 aMCI patients at baseline, during WBV exercise, and on 6 of the 16 patients after 24-week WBV training. To diagnose SPECT images and select the patients, a Z-score mapping approach was used, which revealed pathological hypoperfusion in the parietal association cortex, precuneus and/or posterior cingulate gyrus for MCI at baseline. rCBF was semi-quantitatively measured and underestimation in the high flow range was corrected. Since it is difficult to quantitatively measure rCBF during WBV exercise, the rCBFratio was obtained by standardizing with the average of individual mean SPECT counts with correcting underestimation in the high flow range. The rCBFratios at baseline and after WBV training were also obtained in a similar manner. Since the changes in rCBF were regarded as corresponding to the changes in rCBFratio, the ratios were compared. Cognitive function was also evaluated and compared.
Results
We found that the rCBFratio changed with an average range of 11.5% during WBV exercise, and similar changes were observed after 24-week WBV training with a 13.0% change, resulting in improved cognitive function (MoCA-J, P = 0.028). The rCBFratio increased in the parietal association cortex and occipital lobes, including the precuneus and posterior cingulate gyrus, at which hypoperfusion was detected at baseline, but decreased in the frontal lobe and anterior cingulate gyrus. The rCBFratio increased on the right side of several motion-suppressive nuclei by WBV exercise; the bilateral red nuclei and right medial globus pallidus by WBV training.
Conclusion
WBV exercise and training increase rCBF in aMCI patients, and WBV training enhances cognitive function and may increase the cognitive reserve. Further investigation is necessary.
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Abbreviations
- AD:
-
Alzheimer’s disease
- aMCI:
-
Amnestic mild cognitive impairment
- BA:
-
Brodmann area
- BA1:
-
Posterior central gyrus
- BA7:
-
Superior parietal lobule and precuneus
- BA10:
-
Frontal pole
- BA11:
-
Orbitofrontal area
- BA17:
-
Primary visual cortex
- BA18:
-
Visual association cortex
- BA19:
-
Occipital association cortex
- BA20:
-
Inferior temporal cortex
- BA21:
-
Middle temporal cortex
- BA25:
-
Subgenual cortex
- BA27:
-
Piriform cortex
- BA28:
-
Posterior entorhinal cortex
- BA29, 30:
-
Retrosplenial cortex
- BA33:
-
Medial anterior cingulate cortex
- BA35:
-
Perirhinal cortex
- BA36:
-
Parahippocampal gyrus
- BA38:
-
Temporal pole
- BA39:
-
Angular gyrus
- BA40:
-
Supramarginal gyrus
- BA41:
-
Transverse temporal gyrus
- BA44:
-
Inferior frontal cortex opercular part
- BA45:
-
Inferior frontal cortex triangular part
- BA46:
-
Dorsolateral prefrontal cortex
- BA47:
-
Inferior frontal gyrus orbital part
- ECD:
-
[99MTc] ethylene cysteinate dimer
- GABA:
-
Gamma-aminobutylic acid
- MCI:
-
Mild cognitive impairment
- MMSE:
-
Mini-Mental State Examination
- MoCA-J:
-
Montreal Cognitive Assessment Japanese version, MRI: Magnetic resonance imaging
- rCBF:
-
Regional cerebral blood flow
- rCBFratio :
-
Regional cerebral blood flow ratio
- ROI:
-
Region of interest
- SD:
-
Standard deviation
- SPECT:
-
Single photon emission computed tomography
- WBV:
-
Whole-body vibration
- WBVex :
-
Whole-body vibration exercise
- WBVtraining :
-
Whole-body vibration training
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Odano, I., Maeyatsu, F., Asari, M. et al. Whole-body vibration exercise and training increase regional CBF in mild cognitive impairment with enhanced cognitive function. Ann Nucl Med 36, 82–94 (2022). https://doi.org/10.1007/s12149-021-01687-4
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DOI: https://doi.org/10.1007/s12149-021-01687-4