Objective: Postoperatively patients have a reduction in nutritional intake and body weight. We studied the effect of postoperative physical training on nutritional intake and body composition. Methods: Patients greater than or equal to60 y admitted for elective colorectal surgery were randomised to train muscular strength (group A) or to nonstrengthening exercises (group B) for 3 months. Fat mass (FM) and lean body mass (LBM) were assessed with bioimpedance preoperatively, 7, 30, and 90 days postoperatively. Nutritional intake was registered in a subpopulation. Results: Of 119 included patients, 60 were randomised to group A and 59 to B. The changes in LBM at postoperative day 7 were a mean (s.d.) of 0.4 (2.1) kg in group A compared to -0.7 (2.0) kg in B. The difference between groups of 1.2 (0.5) kg at day 7 was statistically significant (P=0.03). At no other time was observed difference between groups in weight, LBM, or FM. The energy and protein intake rose during postoperative day 1–7 and rose further after discharge. At no time were differences between groups. Conclusion: Physical training had little effect on body composition following abdominal surgery. The nutritional intake in well-nourished patients did not increase by training.
European Journal of Clinical Nutrition, 2005, Vol 59, Issue 8, p. 969-977
postoperative care; nutrition assessment; body composition; randomised controlled trial; exercise