51.Which of the following best distinguishes conditioned muscles from unconditioned : 1401714

51.Which of the following best distinguishes conditioned muscles from unconditioned : 1401714.


51.Which of the following best distinguishes conditioned muscles from unconditioned muscles?

a.conditioned muscles can store more glycogen.

b.conditioned muscles  are more efficient at converting fat to glucose.

c.conditioned muscles rely more on protein breakdown to provide glucose.

d.conditioned muscles rely less on fat breakdown and more on glucose oxidation for energy.

52.Which of the following describes a characteristic of fat use during physical activity?

a.Upon commencing an activity, blood fatty acids rise to provide an immediate source of fuel.

b.Fat that is present within the muscle fibre represents the primary source of energy for that muscle.

c.Athletes who consume a high-fat, low-carbohydrate diet for even 1 day are at risk for depleting their glycogen reserves quickly.

d.After consumption of a high-fat diet for at least 2 weeks, physical activities are performed as efficiently as from intake of a high-carbohydrate diet.

53.What cellular organelles are responsible for producing ATP aerobically?


b.Golgi bodies


d.cell membranes

54.For optimal performance of endurance athletes, sports nutritionists recommend approximately how much dietary fat as a percent of total energy?

a.5-10 percent

b.10-15 percent

c.20-35 percent

d.35-45 percent

55.During a physical activity, what hormone signals the fat cells to begin releasing their fatty acids?





56.Which of the following describes fat utilization during physical activity?

a.Fat that is stored closest to the exercising muscle is oxidized first.

b.Fat represents the major fuel source during sustained, moderate activity.

c.Fat oxidization makes more of a contribution as the intensity of the exercise increases.

d.Fat is burned in higher quantities during short, high-intensity exercises than prolonged, low-intensity exercises.

57.Which of the following is an effect of physical fitness on fat metabolism?

a.Fatty acid release from adipose cells directly into muscle cells becomes more efficient.

b.Fatty acid concentrations in the blood rise significantly after the first 20 minutes of physical activity.

c.Fatty acid energy release requires less oxygen on a per-kcalorie basis than does the use of glucose.

d.Fat utilization slows down and liver glucose release rises in response to adaptation of the body’s hormonal profile.

58.Which of the following is associated with muscles using their maximum amount of energy from fat?

a.breathing is easy

b.training regimen is optimal

c.balanced diets were ingested

d.high-glycemic index foods were ingested

59.In the immediate post-exercise period, what type of diet enhances muscle protein synthesis?

a.protein alone

b.carbohydrate alone

c.carbohydrate plus fat

d.carbohydrate plus protein

60.Which of the following is an effect of exercise on protein metabolism?

a.Protein synthesis is inhibited during exercise.

b.Protein use as a fuel is lowest in endurance athletes.

c.Body protein synthesis rates decline about 30 percent for several hours after physical activity.

d.Protein synthesis is increased slightly during exercise but thereafter diminishes by a like amount to remain in balance.



51.Which of the following best distinguishes conditioned muscles from unconditioned : 1401714

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