The measurement technique DLW uses ____ to determine energy expenditure.
A) a cycle ergometer
B) direct calorimetry
C) radioactively labeled hydrogen and oxygen
D) a treadmill
Q. 2In a well-designed study, a statistically significant increase in maximal strength with creatine supplementation was detected at 12 weeks but not at 1 week. What is the likely explanation?
a. Creatine supplementation allowed athletes to complete more weight lifting repetitions and sets, but the effects of the training are not seen immediately.
b. It takes time (about three months) for the body to increase the total amount of ATP stored in muscle.
c. Time was needed to maximize carbohydrate stores because creatine storage and function are directly related to the size of muscle glycogen stores.
d. Hormonal balance is altered, but the changes are slow and subtle and not detectable for approximately 12 weeks.
Q. 3What is the amount of energy per unit time required by the body to maintain a nonactive but alert state?
A) BMR
B) resting oxygen consumption
C) TEE
D) RMR
Q. 4Which of the following is a true statement regarding creatine supplementation?
a. Has been shown to be beneficial for both strength and endurance athletes
b. Has a direct effect on improving strength, speed, and power for strength athletes
c. Causes dehydration and muscle cramping in strength athletes
d. Allows strength and power athletes to sustain high-intensity training
Q. 5The size and complexity of which device makes them unsuitable for measuring energy expenditure for short time intervals, particularly less than 30 minutes?
A) room-size calorimeters
B) metabolic cart
C) simplified portable system
D) doubly labeled water (DLW)
Q. 6Those who respond to creatine supplementation could expect that muscle creatine phosphate concentrations would increase by approximately ____.
a. 5
b. 20
c. 37
d. 50
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