title: The association of the distance walked in 6 min with pre-operative peak oxygen consumption and complications 1 month after colorectal resection.
abstract: We measured the distance 112 patients walked in 6 min, as well as their peak oxygen consumption pedalling a bicycle, week before scheduled resection of benign or malignant colorectal disease. The distance walked correlated with peak oxygen consumption, the former 'accounting' for about half the variation in the latter, r² 0.52 (95% CI 0.38-0.64), p < 0.0001. In the first postoperative month, 42/112 patients experienced a complication. In multivariate analysis, complications were less likely with longer walking distances and increasing age: the odds ratio (95% CI) reduced to 0.995 (0.990-0.999) for each metre distance, and to 0.96 (0.93-0.99) with each year of age, p = 0.025 and p = 0.018, respectively. The distance walked in 6 min before surgery can provide prognostic information when cardiopulmonary exercise testing is unavailable.
authors.affiliation: Steinberg-Bernstein Centre for Minimally-Invasive Surgery and Innovation, Department of Surgery, McGill University Health Centre, Montreal, Quebec, Canada.
authors.forename: L
authors.initials: L
authors.lastname: Lee
authors.forename: K
authors.initials: K
authors.lastname: Schwartzman
authors.forename: F
authors.initials: F
authors.lastname: Carli
authors.forename: G S
authors.initials: GS
authors.lastname: Zavorsky
authors.forename: C
authors.initials: C
authors.lastname: Li
authors.forename: P
authors.initials: P
authors.lastname: Charlebois
authors.forename: B
authors.initials: B
authors.lastname: Stein
authors.forename: A S
authors.initials: AS
authors.lastname: Liberman
authors.forename: G M
authors.initials: GM
authors.lastname: Fried
authors.forename: L S
authors.initials: LS
authors.lastname: Feldman
mesh_terms: D000375:Aging / Q000502:physiology; D015308:Anaerobic Threshold / Q000502:physiology*; D001642:Bicycling; D001827:Body Height / Q000502:physiology; D003106:Colon / Q000601:surgery*; D015897:Comorbidity; D005080:Exercise Test / Q000379:methods*; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D016017:Odds Ratio; D010101:Oxygen Consumption / Q000502:physiology*; D010806:Physical Education and Training; D011183:Postoperative Complications / Q000453:epidemiology* / Q000503:physiopathology; D012372:ROC Curve; D012007:Rectum / Q000601:surgery*; D016138:Walking / Q000502:physiology*