Table 3.
Multilevel regression models for11-16 year-old boys for cycle ergometer-determined peak oxygen uptake
| Parameter | Loge cycle ergometer-determined peak oxygen uptake | |||
|---|---|---|---|---|
| Model 3.1 | Model 3.2 | Model 3.3 | Model 3.4 | |
| Fixed Part | Estimate (SE) | Estimate (SE) | Estimate (SE) | Estimate (SE) |
| Constant | − 1.902 (0.228) | − 1.795 (0.209) | − 2.176 (0.128) | − 2.299 (0.117) |
| Loge Body mass | 0.700 (0.059) | 0.660 (0.056) | 0.936 (0.033) | – |
| Agea | 0.034 (0.009) | ns | ns | ns |
| Age2 | ns | ns | ns | ns |
| Maturity stage 2 | – | ns | ns | ns |
| Maturity stage 3 | – | 0.081 (0.019) | ns | ns |
| Maturity stage 4 | – | 0.075 (0.019) | ns | ns |
| Maturity stage 5 | – | 0.111 (0.024) | ns | ns |
| Loge Skinfolds | – | – | − 0.218 (0.021) | – |
| Loge FFMb | – | – | – | 0.847 (0.032) |
| Random Part | ||||
| Level 2 | ||||
| Var(cons) | 0.011 (0.002) | 0.010 (0.002) | 0.005 (0.001) | 0.006 (0.001) |
| Level 1 | ||||
| Var(cons) | 0.004 (0.001) | 0.004 (0.001) | 0.003 (0.000) | 0.004 (0.001) |
| Units: Level 2 | 72 | 72 | 72 | 72 |
| Units: Level 1 | 170 | 161 | 170 | 170 |
| − 2 × log-likelihood | − 311.897 | − 302.871 | − 374.066 | − 359.525 |
Values are model estimates (standard error)
Models 3.1, 3.3, and 3.4 founded on 170 determinations of peak oxygen uptake. Model 3.2 founded on 161 determinations of peak oxygen uptake
ns not significant (p > 0.05), – not entered
aAge centred on mean age 13.5 years
bEstimated fat free mass (Slaughter et al. 1988)