Cardiorespiratory fitness and its association with thalamic, hippocampal, and basal ganglia volumes in multiple sclerosis.

Abstract:

BACKGROUND:There is little known about cardiorespiratory fitness and its association with volumes of the thalamus, hippocampus, and basal ganglia in multiple sclerosis (MS). Such inquiry is important for identifying a possible behavioral approach (e.g., aerobic exercise training) that might change volumes of deep gray matter (DGM) structures associated with cognitive and motor functions in MS. PURPOSE:This study examined the association between cardiorespiratory fitness and volumes of the thalamus, hippocampus, and basal ganglia in MS. METHOD:We enrolled 35 persons with MS who underwent a maximal exercise test for measuring cardiorespiratory fitness as peak oxygen consumption (VO2peak) and brain MRI. Volumes of the thalamus, hippocampus, caudate, putamen, and pallidum were calculated from 3D T1-weighted structural brain images. We examined associations using partial (pr) correlations controlling for demographic and clinical variables. RESULTS:VO2peak was significantly associated with composite scaled volumes of the caudate(pr = .47, p < .01), putamen (pr = .44, p < .05), pallidum (pr = .40, p < .05), and hippocampus (pr = .42, p < .05), but not thalamus (pr = .31, p = .09), when controlling for sex, age, disability, and duration of MS. CONCLUSION:Our results provide novel evidence that cardiorespiratory fitness is associated with volumes of DGM structures that are involved in motor and cognitive functions in MS.

journal_name

Neuroimage Clin

journal_title

NeuroImage. Clinical

authors

Motl RW,Pilutti LA,Hubbard EA,Wetter NC,Sosnoff JJ,Sutton BP

doi

10.1016/j.nicl.2015.02.017

subject

Has Abstract

pub_date

2015-02-26 00:00:00

pages

661-6

issn

2213-1582

pii

S2213-1582(15)00035-2

journal_volume

7

pub_type

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