Nutrition, Fitness, and Physical Activity – Flashcards
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VO2 max can be used to assess...
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cardiovascular conditioning
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To help lose weight, the DRI Committee recommends a level of moderately intense exercise at a frequency of at least
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over 300 minutes per week or 90 minutes most days, plus dietary restriction
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The effect of regular exercise on heart and lung function is known as:
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cardiorespiratory conditioning.
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Which of the following is a property of conditioned muscles?
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They can store more glycogen.
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Which of the following cellular changes occur in the muscles with increased cardiovascular conditioning?
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Increase in the number of mitochondria
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An individual can be considered metabolically fit, even with a BMI in the overweight or obese category.
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TRUE
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A tissue deprived of an oxygen supply during exercise would develop an accumulation of
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Lactic Acid
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Which of the following is a feature of protein nutrition in physical activity?
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Protein is NOT a major source of fuel during physical activity
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The optimal carbohydrate concentration of sports drinks for the endurance athlete is
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Lower than non-sports drinks, such as soda pop and fruit juices.
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The recommended amount of dietary carbohydrate (g/kg body weight) for an athlete training for a marathon is approximately...
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6-9
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How much time spent in vigorous activity is usually needed to deplete glycogen reserves?
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1.5 hours
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What dietary nutrient(s) is (are) most effective at raising muscle glycogen concentrations?
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Carbohydrates
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Match the source of energy with the amount of time it is able to supply the exercising body with energy.
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Question
ATP: 1-5 Seconds
Glucose-Anaerobic: 5-200 Seconds
Glucose- Aerobic: 2 min.-3 hours
Fats- Aerobic: Long Term-multiple hours
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Vitamin and mineral supplements have been shown to consistently enhance athletic performance and supply a boost in energy availability.
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FALSE
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Which of the following is a feature of caffeine use in physical activity?
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College and national competitions prohibit the use of caffeine in amounts greater than that present in ~4 large "cups" of coffee when consumed in a 2-hour period prior to competition
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A person who suddenly begins sprinting will exhaust the muscle's supply of creatine phosphate in about
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10 Seconds
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Which of the following is true regarding the body's sensitivity to insulin as the body becomes more fit?
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The body becomes MORE sensitive to insulin as it becomes more physically fit, so LESS is needed to maintain normal blood glucose.
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As muscle becomes more conditioned for power which of the following will occur to muscle cells?
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. hypertrophy
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Which of the following is a common product of anaerobic metabolism?
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lactic acid
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Which of the following individuals would most benefit from drinking a sports drink instead of plain water while exercising?
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Brent, who is training for a marathon with long weekend runs
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Which of the following would lead the body to use more fat than carbohydrate for its source of energy?
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Increased cardiovascular training
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Which of the following describes an effect of caffeine use in the athlete?
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It stimulates fatty acid release
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During physical performance, what is the role of creatine phosphate?
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Transfer of energy to make ATP
