Fig. 1.

Serum measures of bone turnover before and after both interventions Serum levels of N-terminal peptide (NTx), osteocalcin (OCN) and procollagen type 1 N-terminal propeptide (P1NP) at baseline (BL) and follow-up (FU, 1 year) in morbidly obese patients treated with either gastric bypass or lifestyle intervention. P-value indicated treatment*time effect from repeated measures ANOVA. ***p < 0.001 vs. lifestyle same timepoint. bp < 0.01, cp < 0.001 vs. baseline. The green background represents the 25–75 percentile for the levels in a normal weight healthy Reference group. Data are given as mean ± SEM.