Table 2.
CRF variables for fitness participants in the OSSLS2, stratified by sex and BMI classification
| 20 m shuttle run (stage) | VO2max (ml/kg per min) | High CRF according to the FITNESSGRAM® cut-offs* | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean | sd † | P ‡ | Mean | sd † | P ‡ | n | %§ | P || | |
| Total sample (n 279) | 7·3 | 1·5 | – | 45·8 | 3·8 | – | 246 | 88 | – |
| Sex | |||||||||
| Girls (n 146) | 6·3 | 1·2 | 43·3 | 3·3 | 133 | 90 | |||
| Boys (n 133) | 8·3 | 1·2 | <0·001 | 48·5 | 3·2 | <0·001 | 113 | 85 | 0·453 |
| BMI category | |||||||||
| Non-overweight (n 219) | 7·6 | 1·3 | 46·8 | 3·4 | 207 | 95 | |||
| Overweight (n 60) | 5·9 | 1·8 | 0·003 | 42·2 | 4·9 | 0·003 | 39 | 65 | 0·003 |
CRF, cardiorespiratory fitness; OSSLS2, Otago School Students Lifestyle Survey Two; PCA, principal components analysis.
Criterion VO2max of 42 ml/kg/min and 35 ml/kg/min for 14–18-year-old boys and girls, respectively( 7 ).
Standard deviations adjusted for clustering by school.
Linear regression with the PCA-derived dietary patterns as the dependent variables, sex or BMI category as the independent variable, additionally adjusted for age, sex or overweight status, and school decile, with clustering by school and robust standard errors.
Row percentage, unadjusted for confounders.
P for χ 2 test for differences between sexes and BMI categories, adjusted for clustering by school.