Table 2.

Overview of included GEO datasets

Study	Number of participants (m/f)		Age range (years: min–max)
	Young	Old	Young	Old	Biopted muscle
This study (GSE144304)	26 (13/13)	54 (28/26)	20–27	75–90	Vastus lateralis
GSE157585 [29]	21 (10/11)	30 (16/16)	20–30	65–91	Vastus lateralis
GSE8479 [30]	26 (12/14)	25 (13/12)	18–28	65–84	Vastus lateralis
GSE362 and GSE674 [31, 32]	14 (7/7)	16 (8/8)	20–29	65–75	Vastus lateralis
Total	87	125	18-30	≥65

Total number of participants across the included studies and age ranges are provided in bold