According to scientific evidence, which of the following substances may improve the performance of sprinters and weight lifters?
A. Bee pollen
B. Chromium
C. Creatine
D. Vitamin E
Answer: C
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What is the cause of sports anemia?
A) dehydration B) increased plasma volume due to training C) low blood hemoglobin levels D) poor dietary intake of iron-rich foods
Which of the following represents current knowledge of the role of vitamin and mineral supplements in physical performance?
a. When taken right before an event, they have been shown to benefit performance. b. Moderate amounts have been shown to improve the performance of most elite athletes. c. They may be beneficial for athletes who struggle to meet their energy requirements. d. Except perhaps for iron, they are needed in high amounts to meet the needs of athletes exposed to hot and humid weather conditions. e. While helpful for elite athletes, there is little evidence to support their use in the average, recreational athlete.
The deficiency of vitamin D inhibits the absorption of _____ and _____ in the small intestine
A) potassium and calcium B) calcium and biotin C) phosphorus and potassium D) phosphorus and calcium
Why would vitamin A deficiency cause eye infections and blindness?
a. Vitamin A maintains epithelial cells b. the mucus secreting cells damage the surface of the eye. c. Keratin-producing cells decrease immune function. d. the hard, dry surface protects normal epithelium