Table 2

Overview of the studies included in the updated review, classified by effectiveness on PA, fitness and motor skills

		Results
Study (first author and year of publication)	Outcome measure: outcome instrument	Total PA	PA in school or LTPA	Fitness	Motor skills
Angelopoulos 2009	PA: quest		+ (LTPA)
Boyle-Holmes 2010	PA: quest, FIT: field, MS: qual	+ (4th grade)		0	+
Gentile 2009	PA: ped, quest	0 (all), + (girls)
de Barros 2009	PA: quest	+
Gorely 2009	PA: ped, accss, FIT: field	+, (+ Accss)		0
Graf 2008	FIT: field, MS: quant			0	+ (1 of 4 tests)
Haerens 2007	PA: quest, accss	0, (+ Accss)	+ (PA in school), 0 (LTPA)
Kriemler 2010	PA: acc, FIT: field	+	+ (PAin school)	+
de Meij 2010	PA: quest, accss, FIT: field	(0 Accss)	+ (Sport participation)	0
McNeil 2009	PA: quest		+ (LTPA)
Naylor 2008	PA: ped, questss, FIT: fieldss	+ (Boys)		+ss
Resaland 2009	FIT: Vo₂max			+
Ridgers 2007	PA: acc, hr		+ (Recess, lunch)
Salmon 2008	PA: acc, MS: qual	+			0 (all), + (girls)
Schneider 2008	PA: quest, FIT: Vo₂max	+	+ (LTPA)	+
Simon 2008	PA: quest		+ (LTPA)
Sollerhed 2008	FIT: field, MS: quant			+	+
Taymoori 2008	PA: quest	+
Verstraete 2007	PA: quest, obsss, accss, FIT: field, MS: quant	(+ Accss)	+ (LTPA), + (obsss), 0 (Accss)	0	0
Walther 2009	FIT: Vo₂max, MS: quant			+	0
Summary	PA only (n=8)	+ (n=6)	+ (n=8)	+ (n=5)	+ (n=3)
	PA only (n=8)	+ss (n=3)		+ss (n=1)
	FIT only (n=4)	+sg(n=3)			+sg (n=1)
	Combined (n=8)	0 (n=2)	0 (n=1)	0 (n=5)	0 (n=2)
		0ss (n=1)
		NA (n=8)	NA (n=11)	NA (n=9)	NA (n=14)

↵ss Subsample, random subset of individuals from within the whole population.
↵sg Subgroup, group within the study population with a defined characteristic (ie, gender, grade).
+, significant positive effect of the intervention; +ss, significant effect in a subsample; sg, significant effect in a subgroup; 0, no effect of the intervention; 0ss, no effect in a subsample.
Acc, PA measured by accelerometers; field, fitness assessed by field test; FIT, fitness; hr, PA assessed by heart rate; LTPA, leisure time physical activity; MS, motor skills; NA, not applicable/not assessed; obs, PA assessed by observation; PA, physical activity; ped, PA measured by pedometers; qual, qualitative assessment of motor skills; quant, quantitative assessment of motor skills; quest, questionnaire based PA assessment; TPA, total physical activity; Vo₂max, fitness assessed by measurement of maximal oxygen uptake.