Table 1.

Search results from electronic databases.

PubMed Central	Search ((((irisin) OR FNDC5)) AND ((exercise) OR physical)) NOT (((((mice) OR rats) OR mouse) OR rodents) OR animal)	236
SCOPUS	((TITLE-ABS-KEY (irisin) OR TITLE-ABS-KEY (FNDC5))) AND ((TITLE-ABS-KEY (exercise) OR TITLE-ABS-KEY (physical))) AND NOT ((TITLE-ABS-KEY (mice) OR TITLE-ABS-KEY (rats) OR TITLE-ABS-KEY (mouse) OR TITLE-ABS-KEY (rodents) OR TITLE-ABS-KEY (animal)))	386
WoS	TOPIC: (irisin) OR TOPIC: (FNDC5) AND TOPIC: (exercise) OR TOPIC: (physical) NOT TOPIC: (mice) OR TOPIC: (rats) OR TOPIC: (mouse) OR TOPIC: (rodents) OR TOPIC: (animal)	527