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. 2017 Sep 7;12(9):e0184340. doi: 10.1371/journal.pone.0184340

Fig 7. Effect of maternal body mass on maternal plasma cortisol as a function of variable foraging demand exposure.

Fig 7

There was a general effect of increased cortisol level in the VFD-exposed group in comparison to the non-VFD group [F (1; 19) = 27.72; p < 0.001], an effect absent when not controlling for body weight. A marked maternal weight by VFD exposure interaction was noted [F (1; 19) = 29.53; p < 0.001]. A positive correlation (red line represents linear regression curve) was observed between maternal weight and maternal cortisol level for the VFD exposed group (r = 0.85, N = 12, p < 0.001) versus a negative correlation (blue line represents linear regression curve) in the non-VFD exposed group (r = -0.79, N = 10, p = 0.006).