Fig. 3

Participant’s dietary habits. Dietary components or participants were summarized using principal component analysis (a, PCA). Each plotted number represent the dietary pattern of the stool sampling date summarized into two dimensions. Dietary information refers to the precedent week of the sampling day. Participants’ data are connected by line. Two scenarios were modelled to test for (i) within group differences in averages before and during the exercise intervention period (solid line) and to test for (ii) within group differences in averages after the exercise intervention (dashed lines). These models were applied to PC1 to test for the effect of days (β coefficient) on the general dietary habit of participants (b and c). Solid and dashed lines refer to the two model scenarios. Intake of meat cold cuts was increased in participants of strength group during intervention period (d)