HPER 435 Exam 2 - Questions with Verified Answers

HPER 435 Exam 2 - Questions with Verified Answers Which of the following statements relative to the intake of carbohydrates and physical performance is FALSE? if consumed during exercise, it takes approximately 60-90 minutes for the carbohydrate to find its way into the muscle and be used as an energy source Carbohydrate loading involves an increase in carbohydrate intake, which also leads to an increase in muscle storage of which of the following? Water The longer you exercise, the less your intensity has to be, and the more you rely on your oxygen system for energy production. True The greatest total amount of carbohydrate stored in the body is in the form of muscle glycogen. When participating in very mild aerobic activities, which of the following will lead to fatigue in very prolonged bouts? Low blood-sugar levels. Which of the following types of foods has the lowest glycemic index? Apple Linda is trying to lose weight by choosing healthier foods and smaller portions and increasing her aerobic exercise. What is aerobic exercise? Exercise that requires oxygen The ATP-PC system predominates during the longer sprints and middle distance runs. False Why is it important to consume high to moderate glycemic index (GI) carbohydrates immediately after exercise? Stimulates a more rapid insulin response The technique of carbohydrate loading is effective primarily for which type of athletic events? long endurance events like marathons and long triathlons Which of the following exercises would be the energy equivalent of jogging one mile? Bicycling 3 miles One reason why carbohydrate is the most important energy food for exercise is that it is a more efficient fuel than fat. The Caloric expenditure of running one mile is approximately _____ Calories per pound of bodyweight. 0.73 The main energy source for the oxygen system during exercise of 2 hours in length would be triglycerides. The sole function of carbohydrates in the body is energy production. False Which energy system would predominate in an all-out, high-intensity, 100-meter dash in track? ATP-PC (phosphagen) Because animals store glycogen in their muscles, eating meat, fish, and poultry is a good source of carbohydrate because you are eating the dead animal's stored glucose. False Which body fuel can be utilized for both aerobic and anaerobic energy production? muscle glycogen The ingestion of which sugar has been associated with gas, bloating, abdominal pain and diarrhea in about 10 percent Americans? Lactose The disaccharide found in milk is: Lactose Which of the following is true of fructose? It is absorbed more slowly than glucose How much carbohydrate per kilogram body weight should be consumed daily in order to restore muscle glycogen levels to normal after intense training? 7-10 The fact that alcohol and fat have about twice the amount of energy per gram as either carbohydrate or protein means that they are better energy sources for the active individual. False In very high-intensity exercise, lasting only one or two minutes, the probable cause of fatigue is disruption of cellular metabolism caused by the accumulation of hydrogen ions. The oxygen system possesses a lower rate of ATP production, but its capacity for total ATP production is much greater. True Hyperglycemia may lead, in turn, to a reactive hypoglycemia. True In very high-intensity exercise, lasting only one or two minutes, the probable cause of fatigue is disruption of cellular metabolism caused by the accumulation of hydrogen ions. The main energy source for the lactic acid system during exercise is Carbohydrates One gram of fat yields _______ Calories. 9 During anaerobic cell metabolism, athletes sometimes complain of short-term muscle fatigue. What can be causing this fatigue? Check all that apply: 1. Lactic acid accumulating in the muscle cells increases acidity of the muscle, which inhibits the activity of some enzymes, causing fatigue. 2. Acidity in muscle cells increases potassium loss from muscles, causing fatigue. Which of the following classifications of physical activity is rated as light, mild aerobic exercise because it is likely to burn less than 5 Calories per minute? walking at a speed of 2.0 miles per hour Which of the following hormones is involved in reducing the amount of glucose in the blood in reaction to hyperglycemia? Insulin Which of the following statements about energy expenditure is INCORRECT? Hand weights seem to increase energy expenditure only when used at slower speeds Regulatory nutrients, such as water, vitamins, and minerals, are essential for proper utilization of body energy sources. True Which energy substance does the body use DIRECTLY to perform its multitude of functions, such as muscle contraction? ATP Which energy system has the greatest POWER generating ability, i.e., speed? ATP-PC The activities that may benefit from carbohydrate feedings are associated with long duration at moderate to high intensity levels or those that require intermittent bouts of intensive activity over a prolonged period. True The oxygen system produces ATP in rather large quantities from other energy sources in the body. Type IIa muscle fibers are known as fast-twitch red fibers. Each gram of carbohydrate contains approximately _____ Calories. 4 What is the recommended amount of carbohydrate that should be consumed 4 hours prior to exercise for an individual participating in intense training? 4-5 g/kg body weight Which of the following energy systems has the greatest CAPACITY for energy production, i.e., endurance? aerobic glycolysis The sun is the ultimate source of energy. True Anthony is training for a half-marathon. On long-run days, which of the following snacks would be the most appropriate to consume after one hour of running and why? A banana and pretzels because they provide carbohydrate, which help prevent fatigue The primary carbohydrate source of energy for physical performance is muscle glycogen. True Carbohydrates are an important macronutrient for fueling muscles. During exercise, where can the body get carbohydrate? Check all that apply: 1. Carbohydrate can come from glycogen stored in the muscle cells. 2. Carbohydrate can come from glycogen stored in the liver cells. 3. Carbohydrate can come from glucose available in the bloodstream. Carbohydrate supplementation is beneficial to performance when substantial amounts of the carbohydrates are consumed a day or two prior to the event. Approximately how many Calories will a 150-pound individual use while jogging a mile?