Impact of slow versus rapid digesting carbohydrates on substrate oxidation in pre-pubertal children: A randomized crossover trial
| Autor: | Brianna D. McKay, Marni E. Shoemaker, Zachary M. Gillen, Ricardo Rueda, Joel T. Cramer, Todd J. Leutzinger, Vikkie A. Mustad, José M. López-Pedrosa |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Blood Glucose
Male 0301 basic medicine medicine.medical_specialty medicine.medical_treatment 030209 endocrinology & metabolism Endogeny Carbohydrate metabolism Critical Care and Intensive Care Medicine 03 medical and health sciences Oxygen Consumption 0302 clinical medicine Double-Blind Method Internal medicine Dietary Carbohydrates medicine Humans Insulin Child Exercise Cross-Over Studies 030109 nutrition & dietetics Nutrition and Dietetics business.industry Metabolism Carbohydrate Postprandial Period Dietary Fats Crossover study Postprandial Endocrinology Carbohydrate Metabolism Female medicine.symptom Energy Metabolism business Oxidation-Reduction Weight gain |
| Zdroj: | Clinical Nutrition. 40:3718-3728 |
| ISSN: | 0261-5614 |
| Popis: | Summary Background & aims Consumption of rapid digesting sugars by children are under increased scrutiny because of their contribution to unhealthy weight gain. Previous studies in adults and children have suggested that altering the blend of carbohydrates (CHOs) consumed may cause shifts in substrate utilization. The purpose of this study was to examine the effects of consuming a slow digesting carbohydrate (SDC) and rapid digesting carbohydrate (RDC) on CHO and fat oxidation, glucose, and insulin responses at rest, during exercise, and post-exercise rest in pre-pubescent children. Methods A randomized, double-blind, crossover design was used. Nineteen pre-pubescent children (n = 10 boys, n = 9 girls, mean ± standard error, age = 9.84 ± 0.37-yrs) participated. Visits to the laboratory began with a 30-min measurement of resting metabolism followed by consumption of either an RDC or SDC drink. Postprandial resting metabolism was recorded for 60-min, immediately followed by 60-min of submaximal cycling exercise while metabolism was recorded, which was immediately followed by another 60-min recording of post-exercise metabolism. Total CHO and fat oxidation, endogenous and exogenous CHO oxidation, blood glucose, and insulin were assessed. Results Total CHO oxidation rate (g∙min−1) was greater after the RDC drink at 60 min (p = 0.032). Endogenous CHO oxidation rate (g∙min−1) was greater after the SDC drink at 15 min (p ≤ 0.010). Cumulative endogenous CHO oxidation (g) was greater after the SDC drink at 45 min (p = 0.009). Endogenous CHO oxidation accounted for a greater proportion of substrate oxidation after the first 60-min rest period (p = 0.028), while exogenous CHO oxidation accounted for a greater proportion of substrate oxidation for the RDC at all time points (p ≤ 0.019). Conclusions The present study provides novel data suggesting that an SDC promotes greater endogenous substrate utilization in pre-pubertal children, which may have beneficial health impacts on energy intake and carbohydrate regulation/metabolism during growth and development. Clinical trials registry number NCT03185884, clinicaltrials.gov |
| Databáze: | OpenAIRE |
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