CSCS EXSC 505 EXAM WITH ALL QUESTIONS AND
CORRECT ANSWERS NEW!!
Which of the following is the BEST reason for aerobic endurance athletes to avoid
erythropoietin use?
a. Hematocrit and hemoglobin levels may decline
b. it can produce an uncontrolled stimulation of red blood cell production
c. resistance to infectious disease may be diminished
d. it may diminish the capacity of the blood to transport oxygen ANSWER b. it can
produce an uncontrolled stimulation of red blood cell production
Creatine supplementation improves all of the follow variables EXCEPT
a. lean body mass
b. maximal strength
c. endurance performance
d. power - ANSWER c. endurance performance
Which of the following performance-enhancing substances is most likely to increase
lean body mass?
a. anabolic steroids
b. arginine
c. ephedrine
d. B-alanine - ANSWER a. anabolic steroids
The Pelvis is located ___ to the patella. - ANSWER superior
What is the smallest contractile unit of skeletal muscle? - ANSWER sarcomere
,What describes Type I muscle fibers? - ANSWER fatigue resistant with high aerobic
energy supply
What describes the flow of blood? - ANSWER right atrium, right ventricle, lungs, left
atrium, left ventricle, body
On average, how many times per minute does the SA node discharge at rest? -
ANSWER 60-80
What are the two major divisions of the skeletal system? - ANSWER appendicular &
axial
Some of the greatest bone mineral densities have been recorded in what type of the
following athletes? - ANSWER gymnasts
What joint type does the ankle & wrist joints consist of? - ANSWER biaxial
What is the sequence of the phases of a muscle contraction? - ANSWER resting,
excitation-contraction coupling, contraction, recharge, relaxation
The chronotropic effect is due to stimulation of the _____ nervous system and has the
effect of causing the heart rate to _____. - ANSWER sympathetic, increase
Which chemical governs muscle actions? - ANSWER calcium
What chemical is released at the neuromuscular junction that serves to excite the
muscle fibers of a motor unit? - ANSWER acetycholine
When one throws a baseball, for example, the arm is rapidly stretched just prior to
throwing the ball. Which of the following structures would detect & respond to that
,stretch by reflexively increasing muscle activity? - ANSWER muscle spindle
What does the electrical impulse of the heart normally originate from? - ANSWER SA
node
What is occurring at the QRS complex of a normal ECG? - ANSWER atrial
repolarization & ventricular depolarization
An athlete performed 840 watts for 0.6 seconds. How many joules of work did this
subject perform the exercise? - ANSWER 504 J
Which of the following muscles or muscle groups is fusiform pennation? - ANSWER
biceps brachii
What is the resistive force when one tries to move an object while it is pressed against
another object? - ANSWER friction
An aerobic endurance athlete wants to gain a competitive advantage. What type of
training will he need to do, & in what direction will this shift his threshold to improve
lactate threshold? - ANSWER high intensity, shifts to the right
What is not a benefit of using weight-stack machines? ANSWER replicates activities
performed in everyday life
An athlete is performing bench press. If he accelerates a mass of 75kg w/ an
acceleration of 2 m/s2, what force is he exerting? ANSWER 150 N
What describes the portion of the total energy cost of exercise that must be supplied
through anaerobic mechanisms due to the slow response of the aerobic system to the
initial increase in the demand for energy? - ANSWER oxygen deficit
, Neural control affects maximal force output of a muscle by determining which & how
many motor units are activated during a muscle contraction & the frequency at which
the motor units are fired. These 2 factors are known as what? - ANSWER recruitment &
rate coding
The Krebs cycle takes place in what part of the cell? - ANSWER mitochondria
If a max sprint interval is performed for 10 s within a Sprint-Interval workout, how many
min is optimal recovery between sprints before repeating the subsequent sprint? -
ANSWER 2 minutes
What type of amino acid is Isoleucine? - ANSWER branched-chain amino acid
2 individuals w/ the same body mass are lifting. Assuming all other factors to be equal,
the individual w/ tendons inserted on the bone _________ the joint center should be able
to lift _________ weight. - ANSWER farther from, heavier
2 athletes are in training for upcoming competitions, a weightlifting meet & a marathon.
Which energy systems will each be primarily using, respectively? - ANSWER
phosphagen & oxidative
At what 2 sites do 85-90% of all intervertebral disk herniations occur? - ANSWER L4-L5
& L5-S1
Athletes often show peripheral fatigue following higher-intensity exercises. What is
proposed as the cause of this form of fatigue? - ANSWER metabolic acidosis
The excess postexercise oxygen consumption by athletes does not result from which of
the following? - ANSWER decreases in body temperature
With increased size in the body of an athlete, what can describe body mass & muscular
strength variation? - ANSWER Body mass increases more quickly than muscular
strength
CORRECT ANSWERS NEW!!
Which of the following is the BEST reason for aerobic endurance athletes to avoid
erythropoietin use?
a. Hematocrit and hemoglobin levels may decline
b. it can produce an uncontrolled stimulation of red blood cell production
c. resistance to infectious disease may be diminished
d. it may diminish the capacity of the blood to transport oxygen ANSWER b. it can
produce an uncontrolled stimulation of red blood cell production
Creatine supplementation improves all of the follow variables EXCEPT
a. lean body mass
b. maximal strength
c. endurance performance
d. power - ANSWER c. endurance performance
Which of the following performance-enhancing substances is most likely to increase
lean body mass?
a. anabolic steroids
b. arginine
c. ephedrine
d. B-alanine - ANSWER a. anabolic steroids
The Pelvis is located ___ to the patella. - ANSWER superior
What is the smallest contractile unit of skeletal muscle? - ANSWER sarcomere
,What describes Type I muscle fibers? - ANSWER fatigue resistant with high aerobic
energy supply
What describes the flow of blood? - ANSWER right atrium, right ventricle, lungs, left
atrium, left ventricle, body
On average, how many times per minute does the SA node discharge at rest? -
ANSWER 60-80
What are the two major divisions of the skeletal system? - ANSWER appendicular &
axial
Some of the greatest bone mineral densities have been recorded in what type of the
following athletes? - ANSWER gymnasts
What joint type does the ankle & wrist joints consist of? - ANSWER biaxial
What is the sequence of the phases of a muscle contraction? - ANSWER resting,
excitation-contraction coupling, contraction, recharge, relaxation
The chronotropic effect is due to stimulation of the _____ nervous system and has the
effect of causing the heart rate to _____. - ANSWER sympathetic, increase
Which chemical governs muscle actions? - ANSWER calcium
What chemical is released at the neuromuscular junction that serves to excite the
muscle fibers of a motor unit? - ANSWER acetycholine
When one throws a baseball, for example, the arm is rapidly stretched just prior to
throwing the ball. Which of the following structures would detect & respond to that
,stretch by reflexively increasing muscle activity? - ANSWER muscle spindle
What does the electrical impulse of the heart normally originate from? - ANSWER SA
node
What is occurring at the QRS complex of a normal ECG? - ANSWER atrial
repolarization & ventricular depolarization
An athlete performed 840 watts for 0.6 seconds. How many joules of work did this
subject perform the exercise? - ANSWER 504 J
Which of the following muscles or muscle groups is fusiform pennation? - ANSWER
biceps brachii
What is the resistive force when one tries to move an object while it is pressed against
another object? - ANSWER friction
An aerobic endurance athlete wants to gain a competitive advantage. What type of
training will he need to do, & in what direction will this shift his threshold to improve
lactate threshold? - ANSWER high intensity, shifts to the right
What is not a benefit of using weight-stack machines? ANSWER replicates activities
performed in everyday life
An athlete is performing bench press. If he accelerates a mass of 75kg w/ an
acceleration of 2 m/s2, what force is he exerting? ANSWER 150 N
What describes the portion of the total energy cost of exercise that must be supplied
through anaerobic mechanisms due to the slow response of the aerobic system to the
initial increase in the demand for energy? - ANSWER oxygen deficit
, Neural control affects maximal force output of a muscle by determining which & how
many motor units are activated during a muscle contraction & the frequency at which
the motor units are fired. These 2 factors are known as what? - ANSWER recruitment &
rate coding
The Krebs cycle takes place in what part of the cell? - ANSWER mitochondria
If a max sprint interval is performed for 10 s within a Sprint-Interval workout, how many
min is optimal recovery between sprints before repeating the subsequent sprint? -
ANSWER 2 minutes
What type of amino acid is Isoleucine? - ANSWER branched-chain amino acid
2 individuals w/ the same body mass are lifting. Assuming all other factors to be equal,
the individual w/ tendons inserted on the bone _________ the joint center should be able
to lift _________ weight. - ANSWER farther from, heavier
2 athletes are in training for upcoming competitions, a weightlifting meet & a marathon.
Which energy systems will each be primarily using, respectively? - ANSWER
phosphagen & oxidative
At what 2 sites do 85-90% of all intervertebral disk herniations occur? - ANSWER L4-L5
& L5-S1
Athletes often show peripheral fatigue following higher-intensity exercises. What is
proposed as the cause of this form of fatigue? - ANSWER metabolic acidosis
The excess postexercise oxygen consumption by athletes does not result from which of
the following? - ANSWER decreases in body temperature
With increased size in the body of an athlete, what can describe body mass & muscular
strength variation? - ANSWER Body mass increases more quickly than muscular
strength
