(a) Weekly body weights and (b) percentage of body fat as determined by dual-energy X-ray absorptiometry for lean and obese rats on control (0 %), fibre (10 %) and high-fibre (20 %) prebiotic diets. Values are means, with their standard errors represented by vertical bars (n 8). Mean values were not significantly different within genetic groups (P > 0·05; two-way ANOVA and repeated-measures ANOVA). LC ((a) —○—; (b) □), lean control; LF ((a) —□—; (b)
), lean fibre; LHF ((a) —△—; (b) ■), lean high fibre; OC ((a) —●—; (b)
), obese control; OF ((a) —■—; (b)
), obese fibre; OHF ((a) —▲—; (b)
), obese high fibre.