Abstract
Highly branched cyclic dextrin (HBCD) is a relatively new carbohydrate source that has gained much popularity in sports nutrition supplements, quickly becoming one of the most popular sports and fitness supplements globally. Due to its high molecular weight and low osmolality, HBCD is thought to provide an ergogenic advantage over other carbohydrate sources via faster gastric emptying and faster absorption. The purpose of this brief review is to explore performance claims and implications of HBCD use. We provide rationale for recommended use based on results of scientific studies conducted in both animals and humans.
Highlights
Branched cyclic dextrin (HBCD), often referred to by its trade name Cluster Dextrin, is an example of a carbohydrate with a high molecular weight and a low osmolality[1]
Since blood glucose concentrations depend on the release of glucose to the intestine, transport over the intestinal mucosa in to blood, and subsequent uptake into the muscle, carbohydrates with a low osmolality may be more effective for providing energy during exercise and expediting glycogen synthesis post-training[21]
Urine concentrations and gross excretion amounts of interleukin (IL)-8 IL-10, and IL-12 p40 increased significantly only after the race in the glucose trial, but not after HBCD29. These results suggest that Highly branched cyclic dextrin (HBCD) may help maintain blood glucose availability for a relatively long time during exhaustive endurance exercise
Summary
Branched cyclic dextrin (HBCD), often referred to by its trade name Cluster Dextrin, is an example of a carbohydrate with a high molecular weight and a low osmolality[1]. Research has left little doubt about pre-, peri-, and post-exercise carbohydrate supplementation and its impacts on fatigue attenuation, improved performance, muscle glycogen sparing and restoration, as well as supporting blood glucose maintenance in both males and females. Since blood glucose concentrations depend on the release of glucose to the intestine, transport over the intestinal mucosa in to blood, and subsequent uptake into the muscle, carbohydrates with a low osmolality may be more effective for providing energy during exercise and expediting glycogen synthesis post-training[21].
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