Table 2.

Clusters showing Masters athletes with higher GM and WM concentrations than the sedentary elderly. Coordinates represent the center of each significant cluster in standardized MNI space with a right-handed coordinate system and the center of the anterior commissure as the origin (N=20).

Mean Differences in GM Tissue Concentrations – Masters athletes > sedentary elderly
MNI coordinates			lobe – brain regions/Brodmann’s Area	T
x	y	z
22	−52	56	parietal – BA 7	4.03
16	−92	28	occipital – cuneus/BA 19	4.89
18	−54	−22	cerebellum anterior lobe – culmen	3.66
Mean Differences in WM Tissue Concentration – Masters athletes > sedentary elderly
MNI coordinates			lobe – brain regions	T
x	y	z
44	−80	36	parietal – precuneus	4.65
46	−64	−14	occipital – sub-gyral	3.23
64	−48	−18	temporal – inferior temporal sub-gyral	3.42

P_{FDR-corrected}<0.005, cluster threshold>200 voxels, T threshold=2.78.

MA=Masters Athlete

SE=Sedentary Elderly

MNI=Montreal Neurologic Institute

T=T–statistic