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Table 2.

Repeatability indices obtained with Pearson's correlation (r)and intraclass coefficient (τ) from one-way ANOVA

Residuals from regular regression
Residuals from nested model
Rτone-tailed PRτone-tailed P
O2max,W(N=47) 0.844 0.982 <0.0001 0.750 0.969 <0.0001 
O2max,T(N=48) 0.420 0.816 0.0015 0.342 0.719 0.009 
O2max,H(N=47) 0.134 -0.098 0.185 0.095 -0.418 0.263 
Tb,H(N=34)a 0.360 0.653 0.018 0.124 -0.336 0.243 
RMR5,W 0.490 0.868 <0.001 0.530 0.887 <0.001 
SpeedMax,W 0.879 0.984 <0.0001 0.843 0.981 <0.0001 
SpeedMax,T 0.677 0.950 <0.0001 0.700 0.956 <0.0001 
Residuals from regular regression
Residuals from nested model
Rτone-tailed PRτone-tailed P
O2max,W(N=47) 0.844 0.982 <0.0001 0.750 0.969 <0.0001 
O2max,T(N=48) 0.420 0.816 0.0015 0.342 0.719 0.009 
O2max,H(N=47) 0.134 -0.098 0.185 0.095 -0.418 0.263 
Tb,H(N=34)a 0.360 0.653 0.018 0.124 -0.336 0.243 
RMR5,W 0.490 0.868 <0.001 0.530 0.887 <0.001 
SpeedMax,W 0.879 0.984 <0.0001 0.843 0.981 <0.0001 
SpeedMax,T 0.677 0.950 <0.0001 0.700 0.956 <0.0001 

P values are mathematically identical because measurements were performed only twice.

Repeatability was calculated from residuals of regular multiple regressions of metabolism on body mass and age, or residuals obtained from the entire nested model (SAS PROC MIXED) with line type and line within line types as fixed and random factors, respectively, and body mass and age as covariates.

N=48 females approximately 8 weeks old. Values in bold indicate statistical significance (P<0.05). All values were the highest 1 min averages.

W, wheel (voluntary exercise); T, treadmill (forced exercise); H, heliox,except RMR (lowest 5 min period of O2 during wheel trial).

a

Two influential points (1 S and 1 C) were removed

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