Prevalence of youth accumulating 60 min or more of moderate- and vigorous-intensity activity per day measured by accelerometry in studies with more than 1000 participants
| Reference | Design | Setting | Age | MVPA threshold | MVPA definition | Prevalence sufficiently active |
|---|---|---|---|---|---|---|
| Riddoch et al38 | Cross-sectional (N=2185) | Denmark, Estonia, Norway, Portugal | 9–15 years | 9 years: 1000 cpm | ≥3 METs | 9 years: boys, 97.4%; girls, 97.6% |
| 15 years: 1500 cpm | 15 years: boys, 81.9%; girls, 62% | |||||
| Nader et al58 | Longitudinal (N=1032) | USA | 9–15 years | Age dependent* | ≥3 METs | 9 and 11 years: >96% (weekdays) |
| 12 years: 83.4% (weekdays) | ||||||
| 15 years: 30.6% (weekdays) | ||||||
| Troiano et al37 | Cross-sectional (N=1778) | USA | 6–19 years | Age dependent* | ≥4 METs | 6–11 years: boys, 48.9%; girls, 34.7% |
| 12–15 years: boys, 11.9%; girls, 3.4% | ||||||
| 16–19 years: boys, 10.0%; girls, 5.4% | ||||||
| Riddoch et al35 | Cross-sectional (N=5595) | UK | 12 years | 3600 cpm | ≥4 METs | Boys, 5.1% |
| Girls, 0.4% | ||||||
| Steele et al36 | Cross-sectional (N=1862) | UK | 10 years | 2000 cpm | NA | Boys, 81.5% |
| Girls, 59.4% | ||||||
| Owen et al39 | Cross-sectional (N=2071) | UK | 10 years | 2000 cpm | NA | Boys, 76% |
| Girls, 53% |
↵* Age-dependent equation METs=2.757+(0.0015×cpm)−(0.08957×age (years))−(0.000038×cpm×age (years)).54
Cpm, counts per minute; METs, metabolic equivalents; MVPA, moderate- and vigorous-intensity physical activity.