Franny Jongbloed

173 7 FEASIBILITY AND SAFETY OF A PREOPERATIVE DIET Figure 2. Visual Analogue Scores (VAS) for nausea, pain, and wellbeing before, during, and after each dietary intervention. (A) The nausea scores increased significantly for patients on the restricted diet and the DER-diet but normalized to baseline levels directly after the intervention period was over; (B) The pain scores did not change significantly during the dietary interventions; (C) The restricted diet resulted in significant decreased VAS wellbeing scores during the diet compared to before, but normalized again directly after the intervention period was over; * P< 0.05. Bars represent the standard error of the mean; DER = daily energy requirements. Body weight Individuals who adhered to the restricted diet lost on average 2.5% of their total body weight, corresponding to 2.4 ± 1.4 kg, based on the body weight measurements at the outpatient clinic before the start of the dietary restriction and on the day after its completion (Figure 3). This body weight loss was significantly greater ( P= 0.002) than in individuals without dietary restriction (n=6), who did not lose weight (0.2% of their total body weight). The body weight changes were not significantly different between the kidney donors and bariatric surgery patients. The DER-diet (n=3) resulted in an average loss of 1.5 ± 1.4 kg (1.7%), which was not significantly different from either the restricted diet group or the control group.