Table 1.
Descriptive statistics of the subjects with PA data and %Fat data. Mean ± Standard Deviation.
| Physical Activity (n = 296 twins) |
Percent Body Fat (n = 518 twins) |
|||
|---|---|---|---|---|
| Boys (n=94 twins) |
Girls (n=202 twins) |
Boys (n=196–206 twins) |
Girls (n=307–312 twins) |
|
| Age (yrs) | 12.3 ± 1.4 | 12.5 ± 1.4 | 12.8 ± 1.6 | 12.6 ± 1.5 |
| Height (cm) | 153.2 ± 11.8 | 154.3 ± 10.4 | 156.0 ± 12.8 | 154.5 ± 10.0 |
| Weight (kg) | 46.7 ± 15.0 | 49.9 ± 13.8 | 49.7 ± 15.8 | 49.2 ± 13.1 |
| BMI (kg·m−2) | 19.6 ± 3.9 | 20.8 ± 4.5 | 20.0 ± 4.1 | 20.5 ± 4.3 |
| BMI Percentile (%) | 50–75 | 75–85 | 50–75 | 50–75 |
| Fatness (%) | 21.0 ± 7.9 | 26.5 ± 7.5 | 20.8 ± 7.7 | 25.9 ± 7.5 |
| Physical Activity | 201.3 ± 53.1 | 184.2 ± 30.3 | -- | -- |
Note. There were no zygosity differences within gender. Sample size varies for percent body fat due to missing data. BMI percentile was determined according to the Centers for Disease Control and Prevention website.25