An effective and comprehensive aerobic workout program ________.
A. should be performed for at least 90 minutes daily to be effective
B. gradually increases in duration and intensity of activities
C. should be performed once a week to avoid boredom
D. relies on resistance training
Answer: B
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Which of the following contributes most to the weight of the human body??
a. Iron b. Water c. Protein d. Calcium e. Fat
Why are the B vitamins especially important to an athlete?
A) During exercise large amounts of the B vitamins are lost in the urine. B) Carbohydrates are a poor source of the B vitamins. C) The B vitamins are directly involved in energy metabolism. D) Active athletes cannot eat a sufficient amount of Calories to meet the RDAs for the B vitamins.
The primary end product of glycolysis is
A) creatine phosphate (CP). B) pyruvate. C) lactic acid. D) adenosine triphosphate (ATP).
A heart attack is triggered _____
a. when an artery leading to the heart becomes clogged by a piece of plaque released by a ruptured portion of the artery wall or by a blood clot b. when an artery leading to the brain becomes clogged by a piece of plaque released by a ruptured portion of the artery wall or by a blood clot c. by a rapid and sudden increase in heart rate d. by a drop in blood pressure e. by an increase in blood pressure