Validation of a physical activity questionnaire (CHAMPS) as an indicator of postoperative recovery after laparoscopic cholecystectomy

Surgery. 2009 Jul;146(1):31-9. doi: 10.1016/j.surg.2009.02.019.


Background: Although many surgical innovations are said to "shorten recovery," recovery has not been consistently defined or measured. The goal of this study was to assess the validity of a physical activity questionnaire (The Community Health Activities Model Program for Seniors [CHAMPS]) as an indicator of postoperative recovery.

Methods: CHAMPS includes 41 questions asking the subject to estimate the time spent on a range of activities in the previous week; responses are converted into kcal/kg/wk. Patients scheduled for laparoscopic cholecystectomy were assessed preoperatively, 1 week and 1 month postoperatively (sensitivity to change). To assess construct validity, results were compared with other measures used to estimate recovery, including pain (VAS), health-related quality of life (SF-36), and complications. CHAMPS was also compared with a measure of exercise capacity, the 6-minute walk test (6MWT). Data expressed as median (IQR).

Results: A total of 50 patients, 72% female, mean (SD) age 51 (17) years, participated. CHAMPS-estimated energy expenditure decreased from 42 [25-64] preop to 18 [9-30] kcal/kg/wk (P < .001) 1 week postoperatively. It remained below baseline at 30 [16-61] kcal/kg/wk 1 month postoperatively (P = .042). At all time points, SF-36 Physical Function, pain with movement, and 6MWT distance significantly correlated with CHAMPS. At 1 month, physical activity was lower in patients reporting complications (16 [10-32] vs 42 [18-77], P < .01).

Conclusion: Evidence is provided for construct validity for a physical activity questionnaire as a measure of surgical recovery.

Publication types

  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Cholecystectomy, Laparoscopic*
  • Cross-Sectional Studies
  • Energy Metabolism / physiology
  • Female
  • Health Surveys*
  • Humans
  • Interviews as Topic
  • Longitudinal Studies
  • Male
  • Middle Aged
  • Motor Activity / physiology*
  • Postoperative Period
  • Recovery of Function / physiology*
  • Walking / physiology