Abstract
Postprandial exercise represents an important tool for improving the glycemic response to a meal. This study evaluates the effects of the combination and sequence of different exercise types on the postprandial glycemic response in patients with type 2 diabetes. In this repeated-measures crossover study, eight patients with type 2 diabetes performed five experimental conditions in a randomized order: (i) uninterrupted sitting (CON); (ii) 30 min of moderate intensity aerobic exercise (walking) (A); (iii) 30 min of combined aerobic and resistance exercise (AR); (iv) 30 min of combined resistance and aerobic exercise (RA); and (v) 15 min of resistance exercise (R). All the exercise sessions started 30 min after the beginning of a standardized breakfast. All the exercise conditions showed a significant attenuation of the post-meal glycemic excursion (P < 0.003) and the glucose incremental area under the curve at 0–120 min (P < 0.028) and 0–180 min (P < 0.048) compared with CON. A greater reduction in the glycemic peak was observed in A and AR compared to RA (P < 0.02). All the exercise types improved the post-meal glycemic response in patients with type 2 diabetes, with greater benefits when walking was performed alone or before resistance exercise.
Highlights
Postprandial hyperglycemia and high glucose excursions were identified as better predictors of cardiometabolic disorders than chronic fasting hyperglycemia in patients with type 2 diabetes [1,2]
A similar time course was found for all the exercise conditions, showing a lower glucose concentration in the postprandial period compared with CON
Postprandial areresistance major of cardiometabolic formed in different glycemic sequences excursions with that of aerobic andpredictors resistance exercises performed indisord sessions
Summary
Postprandial hyperglycemia and high glucose excursions were identified as better predictors of cardiometabolic disorders than chronic fasting hyperglycemia in patients with type 2 diabetes [1,2]. Exercise is widely recognized as a valid tool for improving glycemic control and post-meal glycemic response, in patients with diabetes and in healthy individuals [3,4,5,6]. Among different exercise parameters considered for prescription in individuals with diabetes [9], the type of exercise has the potential to influence the postprandial glycemic response. Both aerobic and resistance exercises are effective in improving long-term glycemic control [3,10] and postprandial glycemia in individuals with type 2 diabetes [5,7,8]
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