Maltodextrin from Sweet Cassava: A Promising Endurance Enhancer

Area of Science:

• Exercise Physiology
• Nutritional Biochemistry
• Pharmacology

Background:

• Exercise performance is influenced by energy availability and metabolic pathways.
• Nutritional interventions, including carbohydrates and plant extracts, are explored for ergogenic potential.
• Sweet cassava (Manihot esculenta) contains compounds that may affect energy metabolism.

Purpose of the Study:

• To investigate the effects of maltodextrin and crude sweet cassava extract on exercise endurance in rats.
• To determine the impact of these substances on glycogen storage and key biochemical markers.
• To explore potential mechanisms, such as antioxidant pathways and AMPK activation, underlying ergogenic effects.

Main Methods:

• Male Wistar rats were assigned to exercise training or non-exercise groups, with subgroups receiving control, maltodextrin, or crude extract.
• Supplementation occurred daily for 16 days, followed by a weight-loaded forced swimming test to measure exhaustion time.
• Body weight, organ weights, biochemical parameters, and liver and muscle glycogen content were analyzed.

Main Results:

• Maltodextrin (500 mg/kg) significantly increased time to exhaustion compared to all groups.
• Both maltodextrin and crude extract increased liver and gastrocnemius muscle glycogen content.
• Exercise training enhanced antioxidant enzymes and glycogen levels, effects amplified by the supplements via AMPK and PGC-1α activation.

Conclusions:

• Maltodextrin and crude sweet cassava extract show potential for enhancing exercise endurance.
• These supplements may improve glycogen storage and exert antioxidant effects, contributing to fatigue resistance.
• Further research is warranted to fully elucidate the mechanisms of action and optimize their use.