Table 1.

PI(E) CO (P—patient, problem or population; I—intervention; E—exposure; C—comparison, control, or comparator; O—outcomes) search strategy.

Population	Intervention or Exposure	Comparison (design)	Outcome
Swimmer*	Talent	Cross-sectional	Performance
Athlete*	Identification	Longitudinal	Velocity/speed
Youth	Development	Experimental	Length
Child*	Long-term development	Exploratory	Area
Boy*	Anthropometrics	Descriptive	Volume
Girl*	Biomechanics	Randomized control trial	Mass
Young	Energetics		Girth
Age-group*	Efficiency		Skinfold
	Motor control		Stroke length
	Strength and conditioning		Stroke frequency
			Stroke rate
			Intra-cyclic variation of velocity/speed
			Passive drag
			Active drag
			Coefficient of drag
			Oxygen uptake
			Oxygen consumption
			Lactate
			Heart rate
			Aerobics
			Anaerobic lactic
			Anaerobic alactic
			Energy cost
			Energy expenditure
			Propelling efficiency
			Froude efficiency
			Stroke Index
			Critical velocity/speed
			Index of coordination
			Strength
			Maximal strength
			Power
			Mechanical power

*Truncation to retrieve words with different endings.