9. The most significant factor leading to exhaustion during intense endurance ex
ID: 174082 • Letter: 9
Question
9. The most significant factor leading to exhaustion during intense endurance exercise lasting two to three hours is: a. dehydration. b. depletion of muscle glycogen. c. the loss of electrolytes. d. an increase in lactate production. 10. Which of the following is TRUE regarding the consumption of carbohydrates during exercise? a. Performance is improved for activities lasting more than 30 minutes. b. The rate of carbohydrate consumption should be at least 45 grams per hour. c. Regular carbohydrate consumption during training can eliminate the discomfort that some experience. d. The maximum rate that ingested glucose can be used is 60 grams per hour. 11. What amount of carbohydrate should a 154-pound individual consume two hours before a competition that is expected to last two and one-half hours? a. 70 grams b. 140 grams c. 175 grams d. 308 grams 12. What are the three components of the female athlete triad? a. inadequate energy intake, amenorrhea, and bone loss b. inadequate energy intake, anemia, and bone loss c. anemia, amenorrhea, hyponatremia d. dehydration, hyponatremia, and anemia 13. The goal of fluid consumption during exercise is to keep net losses of body water to: a. zero. b. less than 1% of body weight. c. less than 2% of body weight. d. less than 3% of body weight. 14. Which of the following is NOT true of fluid and electrolyte losses during exercise? a. To replace fluid losses, consume at least 16 ounces of fluid for every pound of body weight lost. b. Endurance training increases the rate of water loss during exercise. c. When exercising intensely it is generally impossible to stay fully hydrated. d. The risk of hyponatremia is highest with intense exercise in hot and humid conditions. 15. Which of the following is NOT true about the use of supplements by athletes? a. Protein supplements generally provide no benefits to competitive weightlifters. b. Female athletes may benefit by taking iron supplements. c. Caffeine supplements improve performance in essentially all high-intensity activities lasting over one minute. d. Creatine monohydrate supplements improve performance for high-intensity endurance activities.Explanation / Answer
9). d). The increase in lactate production
With increased duration of the intense exercise, the anaerobic metabolic demands increase. This result in the production of more lactic acid, accumulation of lactic acid causes fatigue and due to decreased ATP production.
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