Table 2. Age prediction accuracy measured by MAE using the 5-CpG sites model published in [22], modified by using ANN statistical analysis.

Model	Compared groups	N	MAE	Std. Deviation	P value
5 CpG model [22]	Athletes	175	3.273	2.620	3.815x10-4
	Controls	128	2.361	1.797
	Endurance	82	2.776	2.391	0.180
	Controls	128	2.361	1.797
	Power	93	3.712	2.745	5.727x10-5
	Controls	128	2.361	1.797

One sample was removed from prediction analysis because of missing data in MIR29B2C C1.