Boys, n=513 | Girls, n=418 | Boys’ ICC | Girls’ ICC | |
---|---|---|---|---|

Mean (SD) | Mean (SD) | |||

Age | 12.4 (1.46) | 12.3 (1.50) | ||

(mL/kg/min)* | 44.2 (5.4) | 40.1 (5.6) | R=0.11 | R=0.12 |

Physical activity (PAQ) | 2.92 (0.72) | 2.58 (0.61) | R=0.10 | R=0.09 |

BMI (kg/m^{2}) | 19.1 (4.1) | 19.8 (4.4) | ||

BMI (z-score) | 0.32 (1.42) | 0.39 (1.24) | R=0.09 | R=0.08 |

Deprivation (EID) | 11.6 (5.0) | 11.7 (6.5) | R=0.27 | R=0.31 |

Ethnicity (White-British) | 93% (n=477) | 92.5% (n=387) | ||

Urban‡ | 73% (n=138) | 75% (n=104) | ||

Rural‡ | 27% (n=375) | 25% (n=314) | ||

Followed 2012 Olympics | ||||

A lot | 57.2% (n=293) | 60.1% (n=251) | ||

A little | 42.8% (n=220) | 39.9% (n=167) | ||

Inspired to try new activity | 54.3% (n=279) | 49.3% (n=206) | ||

Continued at 12 months | 45.2% (n=232) | 40.0% (n=167) |

*Estimated from 20 m shuttle-run using the equation of Leger

*et al*(1988).12†Defined using the International Obesity Task Force criteria.

‡Urban included urban, town and fringe, rural includes villages and isolated dwellings (National Statistics Postcode Directory, 2010).

BMI, body mass index, z-score calculated using the UK1990 Growth Reference (Cole

*et al*, 1995); EID, English Indices of Deprivation (Office for National Statistics, 2010); ICC, intracluster correlation coefficients; PAQ, Physical Activity Questionnaire for Adolescents.