The effect of the SC of log body mass on the SC of log lifetime DEE per gram (a) and SC of log lifetime RMR per gram (b). an = 82, SC of lifetime DEE per gram = − 0.0109 − 0.185 SC of body mass, r2 = 0.139, F = 12.88, P = 0.001; bn = 232, SC of lifetime RMR per gram = 0.00270 − 0.107 SC of body mass, r2 = 0.034, F = 8.13, P = 0.005)