Association between cardiorespiratory fitness and total brain myelin volume among older adults

Table 3 Results of correlation analysis between Myelin compound and aerobic capacity parameters

R²	VO2peak	MAP	HRmax	RERmax
Myelin-correlated compound [ml]	0.18	0.24^*	0.04	0.25^*
Myelin fraction (MYC/BPV)	0.10	-0.15	-0.26*	0.33*
Myelin fraction (MYC/ICV)	0.05	-0.22	-0.29*	0.32*
Brain parenchymal volume [ml]	0.12	0.24^*	-0.02	0.07
Intracranial volume [ml]	0.13	0.283^*	-0.02	-0.04
Brain parenchymal volume [%]	0.10	0.09	0.05	0.32^**
Intracranial volume [%]	0.05	0.02	0.05	0.32^**
Brain parenchymal fraction (BPV/ICV) [%]	-0.07	-0.16	0.00	0.16

R²-correlation coefficient, VO2peak – peak oxygen uptake, MAP – maximal aerobic power, HRmax – maximal heart rate, RERmax – maximal respiratory exchange ratio, * p ≤ 0.05, ** p ≤ 0.01

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