Health or developmental outcome | Intervention studiesa | Longitudinal studiesa | Total effect and evidence |
---|---|---|---|
Body composition (15 studies, 3448 participants)a | |||
 BMI | 0 0 0 | + 0 0 0 0 0 - - - | Based on inconsistent findings among the studies with high methodological quality, there is insufficient evidence for the effects of physical activity on body composition in young children (< 5 yrs). |
 Fat percentage | + 0 0 | + 0 | |
 Fat mass | + | + + 0 0 0 0 | |
 Fat free mass | 0 | + + 0 | |
 Waist/hip ratio |  | + | |
 Weight |  | 0 - | |
Motor development (11 studies, 1281 participants) | |||
 Total motor score | + + + + 0 | 0 | Based on consistent findings among studies with weak-to-moderate methodological quality, there is moderate evidence for the positive effects of physical activity on motor development in young children (< 5 yrs). |
 Total gross motor score | 0 |  | |
 Total fine motor score |  | 0 | |
 Locomotor score | + + |  | |
 Object control score | + + 0 |  | |
 Balance score | + + |  | |
 Manual dexterity score | 0 |  | |
 Gross motor milestones | + | + | |
Cognitive development (10 studies, 4939 participants) | |||
 School outcomes (e.g. math, language) | + + + + + + | – | Based on consistent findings among studies with weak-to-moderate methodological quality, there is moderate evidence for the positive effects of physical activity on cognitive development in young children (< 5 yrs). |
 Acute effects (e.g. concentration) | + + 0 |  | |
Cardiovascular health (7 studies, 1381 participants) | |||
 Blood pressure | + | + 0 | Based on inconsistent findings among the studies with high methodological quality, there is insufficient evidence for the effects of physical activity on cardiovascular health in young children (< 5 yrs). |
 Insulin |  | 0 0 | |
 Triglycerides |  | + 0 | |
 Cholesterol |  | 0 0 | |
 Adiponectin |  | + | |
 Glucose, leptin, hsCRP |  | 0 | |
 Lipoprotein |  | 0 | |
 Total metabolic score |  | + | |
 Serum lipids and lipoproteins |  | 0 | |
 Cardiovascular fitness |  | + + | |
 Arterial stiffness |  | + | |
Social-emotional development (2 studies, 7038 participants) | |||
 Behavior |  | – | Based on inconsistent findings and a limited amount of available studies, there is insufficient evidence for the effects of physical activity on social-emotional development in young children (< 5 yrs). |
 Quality of Life |  | 0 | |
Bone health (2 studies, 2907 participants) | |||
 Bone density |  | 0 | Based on inconsistent findings and a limited amount of available studies, there is insufficient evidence for the effects of physical activity on bone health in young children (< 5 yrs). |
 Fractures |  | – |