Improved physical performance and increased lean tissue and fat mass in patients with ulcerative colitis four to six years after ileoanal anastomosis with a J-pouch.

Purpose: This study was designed to examine the long-term changes in physical performance, body composition, and bone mineral density in patients with ulcerative colitis undergoing ileoanal anastomosis with J-pouch. Patients were also screened for abnormalities in blood biochemistry.

Methods: Maximal isometric strength (sum of pinching, hand grip, arm flexion, and knee extension), work capacity (ergometer test at 1.