Walking After Meals Is Particularly Effective for Lowering Postprandial Glucose
October 17, 2016. This randomized crossover study evaluated whether the timing of walks in relation to meals improves postprandial glucose. Over a 2-week period, 41 adults with type 2 diabetes (mean age 60 years) were advised to either walk 30 minutes each day or for 10 minutes after each main meal. Participants’ physical activity was measured by accelerometry, and glucose levels were measured using continuous glucose monitoring. Postprandial glucose was assessed over the 3 hours after a meal using the incremental area under the blood glucose curve (iAUC). Investigators found that iAUC was significantly lower in participants who walked after meals compared with a single walk (ratio of geometric means 0.88, 95% CI 0.78, 0.99). This benefit was most notable with walks following the evening meal (0.78, 95% CI 0.67, 0.91), leading the investigators to suggest that physical activity guidelines for patients with diabetes should be amended to recommend post-meal activity, particularly after high-carbohydrate meals.