Question

Which of the following factors would NOT influence or impact the rate at which muscles use fatty acids as a fuel source during aerobic exercise?
Duration of exercise when performed at high-intensity
Training status of the athlete (aerobic conditiioning increases the size & number of muscle mitochondria)
Concentration of free fatty acids in the bloodstream (which is enhanced by moderate caffeine intake)
Duration of exercise when performed at low-moderate intensity
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Question 2
The rule of thumb for fluid replacement is for each pound lost during exercise, one cup of water or another appropriate fluid should be consumed during and/or immediately after exercise.
True
False
explain please to me short, I'm lost
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Question 7
Muscles replenish glycogen stores most efficiently by an athlete's intake of carbohydrate-rich foods along with some lean protein (~ 3-4 carbs : 1 protein ratio) as soon as possible after endurance exercise, and then continue to consume a high carbohydrate the remainder of the day, to maximize glycogen synthesis.
True
False
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Question 24
"Sports drinks" generally do NOT consist of which of the following ingredients? (Choose the 2 correct answers.)
O herbal ingredients (such as guarana, gingko biloba, ginseng, ephedra, etc.) to increase metabolism and promote calorie-burning
O caffeine to promote fat metabolism and increase metabolic rate
O electrolytes (sodium, potassium & chloride) to enhance both water and glucose absorption from the small intestine, to help maintain blood volume, and to replace electrolytes lost in sweat
O water for hydration to maintain a healthy blood volume and promote efficient cooling
O carbohydrate to provide energy and replace carbohydrate (glucose) used during exercise
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CALCULATE the target heart rate range (BOTH LOW and HIGH values) for a 25-year old male who is performing aerobic exercise based on ACSM guidelines for aerobic intensity.

Answer 1

Question 1:answer is duration of exercise if performed at high intensity.

Because at high intensity exercise the enzyme which transfers FFA to the mitochondria i.e. carnitine palmitoyltransferase gets down regulated during high intensity workout. Therefore. Free fatty acids can not be utilized as a fuel . Instead of this glycogen starts getting used as a fuel.

Question 2:TRUE..during exercise person loss 1 to 2 Litres of fluid from the body as sweat and electrolytes and even more amount if the intensity of workout is high. Due to loss of fluid core body temperature increases which can decrease the work capacity. So, to replenish the lost fluid appropriate fluid should be consumed for maintaining the physical activity.

Question 7:TRUE...muscle glycogen is important fuel for exercise. Restoration of glycogen is a slow process so require special consideration. So, glycogen should be taken immediately after the workout and then frequently with addition of protein the recovery of muscles and glycogen synthesis can be increased.

Question 24:sports drink is different from energy drink.sports drink is used to replenish the lost fluid during exrcise whereas energy drink contains caffeine to provide energy to the body.

Therefore sports drink DO NOT contain herbal ingredients and caffien to promote fat metabolism and calorie burning.

CALCULATION: according to ACSM guidline the heart rate range during aerobic exercise should be between 55 % to 90%.

and to calculate the age related maximum heart rate we should substract Age of person from 220.

Therefore, 220-25=195

Now we will calculate the range accordingly by the given percentage in ACSM guidelines.it should be between-

(1)minimum i.e. 55% :195× 0.55=107.25

(2)maximum i.e. 90% :195× 0.90=175.5

It should be between 107.25 to 175.5

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