Performance outcomes and unwanted side effects associated with energy drinks

Area of Science:

• Sports Science
• Exercise Physiology
• Nutritional Biochemistry

Background:

• Energy drinks are widely consumed, particularly by athletes, often marketed for enhanced physical performance.
• Despite their popularity, scientific evidence supporting the ergogenic effects of energy drinks is limited.
• Common ingredients include caffeine, carbohydrates, amino acids, herbs, and vitamins, with varying effects on exercise.

Purpose of the Study:

• To analyze the effects of energy drink ingredients on prolonged submaximal exercise (endurance).
• To evaluate the impact of energy drink components on short-term strength and power (neuromuscular performance).
• To assess the influence of energy drinks on fluid and electrolyte balance during prolonged exercise.

Main Methods:

• Review and analysis of existing scientific literature on energy drinks and exercise performance.
• Examination of studies focusing on endurance capacity and neuromuscular function.
• Investigation into the role of specific ingredients like caffeine, carbohydrates, and others.

Main Results:

• Some studies indicate improved endurance performance, potentially linked to caffeine and carbohydrate content.
• Evidence for ergogenic effects on muscle strength and power is less consistent.
• The caffeine dosage in typical energy drinks may be insufficient to significantly enhance neuromuscular performance.

Conclusions:

• Energy drinks can offer benefits for endurance, largely attributed to caffeine and carbohydrates.
• Their efficacy in improving muscle strength and power is not well-supported by current data.
• The optimal delivery method for caffeine to achieve maximal neuromuscular benefits remains uncertain.