Dr Hyun Soo Kim and colleagues conducted a prospective study to assess the effect of walking exercise on bowel cleansing before colonoscopy.
The investigators defined a patient subgroup that would benefit from walking exercise.
A total of 383 outpatients were randomized into 2 groups.
The team randomized 196 patients in Group 1 to walking exercise, and 187 to non-exercise in Group 2.
Those randomized to Group 1 were instructed to drink 250 mL of polyethylene glycol solution and then walk at least for 5 min at intervals of 10 min.
Patients randomized to Group 2 were instructed to drink and then take rest in a waiting room until the entire 2.5 L volume was consumed.
The amount of walking exercise in both groups was estimated using a step counter.
|97% of walking patients considered exercising more comfortable than taking solution|
|American Journal of Gastroenterology|
The investigative team reported that a single endoscopist estimated the efficacy of cleansing in a single-blinded manner.
The team assessed patient's demographics, various parameters related to bowel preparation, and the degree of patients discomfort caused by the walking exercise.
The investigators found that the number of step counts taken was significantly different for the 2 groups.
The degree of bowel cleansing in Group 1 and Group 2 was significantly different.
However, the investigative team noted that groups were similar in terms of all other data collected.
Using univariate analysis, the team showed that walking exercise was beneficial to non-obese patients under 65 years, without history of abdominal surgery.
Also, multivariate logistic regression analysis demonstrated that non-exercise was an independent risk factor for poor bowel cleansing.
The investigators noted that 97% of walking patients considered walking exercise more comfortable than taking the polyethylene glycol solution.
Dr Kim's team concludes, “The walking exercise was found to improve colonoscopic bowel cleansing without significant patient discomfort.”