Table 1. Search terms used to find eligible articles.

	Search term
	Physical characteristics	(physical OR “physiological testing” OR “performance tests” OR aerobic* OR “endurance” OR strength OR “soccer physiology” OR “exercise test*” OR anthropometric* OR “body composition”)
AND	Age	(youth OR adolescent OR adolescence OR child* OR academy OR “young adult” OR “adolescent development”)
AND	Team sport	(“team sport” OR handball OR soccer OR football OR team handball OR “field sport*” OR “court-based sport*” OR rugby OR hockey OR cricket OR basketball OR “field conditions” OR “netball” OR technical tactical skill)
AND	Study design	(longitudinal OR “long term” OR “cross-sectional” OR “quasi-experimental” OR “prospective observational” OR “mixed longitudinal”)

AND is used between each search term to include all the variables