18 Questions
What is the recommended maximum daily caffeine intake for teenagers?
100 milligrams
How much caffeine in a single dose can be fatal?
10,000 milligrams
What is the suggested caffeine intake before exercise according to sports-medicine experts?
2-6 milligrams per kilogram of body weight
What is the main function of citrulline in the body?
Breaks down into nitric oxide to expand blood vessels
Why is increased blood flow beneficial during exercise?
It speeds up the removal of waste products causing muscle fatigue
What does research say about the effect of citrulline as a performance supplement?
It has a mixed effect and may improve, hinder, or have no effect on performance
What is the effect of arginine supplements on strengthening and muscle-building exercises?
They have little to no effect
What is the recommended maximum daily intake of arginine supplements for safety?
9 grams
How does beet juice potentially improve athletic performance?
By expanding blood vessels
What is one of the benefits of blood vessel expansion caused by nitric oxide from beet juice?
Speeding up the removal of waste products that cause muscle fatigue
What type of exercises have shown improvement with beet juice intake?
Aerobic activities like running and cycling
What can happen when users take more than 9 grams of arginine supplements per day?
GI discomfort and slightly lower blood pressure
What is the main reason why makers of performance supplements usually don’t carry out studies in people to find out if their products work and are safe?
Research often involves small numbers of participants and short durations
Why are antioxidants (like vitamin C and vitamin E) often included in supplements for exercise and athletic performance?
To reduce muscle inflammation, soreness, and fatigue caused by exercise
Why might taking antioxidant supplements hinder the benefits of exercise such as muscle growth and power output?
They interfere with the natural process of free radicals aiding muscle fibers
Why hasn't research on supplement ingredients been conducted on women, middle-aged adults, or teenagers?
Focus on studying young healthy men
How do free radicals formed during exercise affect muscle cells?
They improve muscle growth and energy production
Why do studies on performance supplement ingredients often involve small numbers of people for short durations?
To investigate immediate effects rather than long-term impacts
Test your knowledge about the effects of caffeine on physical performance in teenagers. Learn about the recommended daily limits, potential risks of excessive caffeine consumption, and its impact on exercise endurance.
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