EXSC 505 Foundations of Human Performance Exam
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On average, how many times per minute does the SA node discharge at rest? -
ANSWER 60-80
An athlete generated 840 watts of power in 0.6 seconds. How much work did this
subject do during the exercise? - ANSWER 504 J
Which of the following muscles or muscle groups have a fusiform pennation?
- deltoid
- biceps brachii
- rectus femoris
- tibialis posterior - ANSWER biceps brachii
Neural control affects the maximal force output of a muscle by determining which and
how many motor units are involved in a muscle contraction and the rate at which the
motor units are fired. These two factors are known as what, respectively? - ANSWER
recruitment; rate coding
An athlete is used to high-intensity (90% VO2max) aerobic exercise; however, she is now
going to switch to longer-duration, submaximal exercise on a routine basis. This type of
shift in training methodology will generally lead to what adaptations regarding energy
supply? - ANSWER shift from primarily carbohydrate to primarily fat
Which of the following characterizes Type I muscle fibers?
,- inefficient & easily fatigable
- rapid force development capabilities
high myosin ATPase activity
fatigue resistant with high aerobic energy supply - ANSWER fatigue resistant with high
aerobic energy supply
All of the following are considered to be advantages when using weight-stack machines
EXCEPT.
design flexibility
simulates real-life activities
reduced likelihood of injury
easy to use - ANSWER simulates real-life activities
Which of the following is the order of the phases of a muscle contraction?
contraction, relaxation, excitation-contraction coupling, recharge, resting
excitation-contraction coupling, relaxation, contraction, resting, recharge
resting, excitation-contraction coupling, contraction, recharge, relaxation
relaxation, recharge, excitation-contraction coupling, resting, contraction - ANSWER
resting, excitation-contraction coupling, contraction, recharge, relaxation
What is the order for blood flow?
right atrium, right ventricle, lungs, left atrium, left ventricle, body
left ventricle, left atrium, body, right ventricle, right atrium, lungs
body, right ventricle, left ventricle, lungs, right atrium, left atrium
right ventricle, right atrium, body, left ventricle, left atrium, lungs - ANSWER right
atrium, right ventricle, lungs, left atrium, left ventricle, body
,Two athletes are in competition, weightlifting meet and a marathon. What energy
systems will each be utilizing, respectively? - ANSWER phosphagen and oxidative
As body size of an athlete increases, which of the following describes what happens to
body mass and muscular strength? - ANSWER Body mass increases faster than
muscular strength.
The Krebs cycle occurs in what part of the cell? - ANSWER mitochondria
The pelvis is _____________ to the patella. - ANSWER superior
An aerobic endurance athlete is seeking to have an advantage over his competitors.
Which type of training would shift his lactate threshold, and in which direction, to
improve his performance? - ANSWER high intensity; shifts to the right
Which anatomical plane separates the body into left and right portions? - ANSWER
sagittal
The law of mass action states that
- A stronger action potential cannot produce a stronger contraction.
- The concentrations of reactants or products will drive the direction of the reactions.
- Weight or mass of an object creates a stronger action potential
- the rate of product formation greatly depends upon the concentration of the reactants.
- ANSWER The concentrations of reactants or products will drive the direction of the
reactions.
At what two levels do eighty-five to ninety percent of all intervertebral disk herniations
occur? - ANSWER L4-L5 & L5-S1
, An athlete in the weight room is doing the barbell bench press. If he accelerates a mass
of 75 kg at a rate of 2 m/s², how much force is he exerting? - ANSWER 150 N
Which of the following defines the portion of the total energy cost of exercise that must
be supplied through anaerobic mechanisms because the aerobic system cannot
respond immediately to the initial increase in the demand for energy?
- oxygen debt
- recovery O2
- oxygen deficit
- EPOC - ANSWER oxygen deficit
Which of the following is a branched-chain amino acid?
- alanine
- aspartate
- glutamate
- isoleucine - ANSWER isoleucine
Two individuals of the same body mass are lifting weights. Assuming all other factors to
be equal, the person with tendons inserted on the bone _______________ the joint center
should be able to lift _______________ weight. - ANSWER farther from; a heavier
Which of the following are the two main divisions of the skeletal system?
- upper & lower body
- appendicular & axial
- medial & lateral
- endergonic & exergonic - ANSWER appendicular & axial
100% Verified!!
On average, how many times per minute does the SA node discharge at rest? -
ANSWER 60-80
An athlete generated 840 watts of power in 0.6 seconds. How much work did this
subject do during the exercise? - ANSWER 504 J
Which of the following muscles or muscle groups have a fusiform pennation?
- deltoid
- biceps brachii
- rectus femoris
- tibialis posterior - ANSWER biceps brachii
Neural control affects the maximal force output of a muscle by determining which and
how many motor units are involved in a muscle contraction and the rate at which the
motor units are fired. These two factors are known as what, respectively? - ANSWER
recruitment; rate coding
An athlete is used to high-intensity (90% VO2max) aerobic exercise; however, she is now
going to switch to longer-duration, submaximal exercise on a routine basis. This type of
shift in training methodology will generally lead to what adaptations regarding energy
supply? - ANSWER shift from primarily carbohydrate to primarily fat
Which of the following characterizes Type I muscle fibers?
,- inefficient & easily fatigable
- rapid force development capabilities
high myosin ATPase activity
fatigue resistant with high aerobic energy supply - ANSWER fatigue resistant with high
aerobic energy supply
All of the following are considered to be advantages when using weight-stack machines
EXCEPT.
design flexibility
simulates real-life activities
reduced likelihood of injury
easy to use - ANSWER simulates real-life activities
Which of the following is the order of the phases of a muscle contraction?
contraction, relaxation, excitation-contraction coupling, recharge, resting
excitation-contraction coupling, relaxation, contraction, resting, recharge
resting, excitation-contraction coupling, contraction, recharge, relaxation
relaxation, recharge, excitation-contraction coupling, resting, contraction - ANSWER
resting, excitation-contraction coupling, contraction, recharge, relaxation
What is the order for blood flow?
right atrium, right ventricle, lungs, left atrium, left ventricle, body
left ventricle, left atrium, body, right ventricle, right atrium, lungs
body, right ventricle, left ventricle, lungs, right atrium, left atrium
right ventricle, right atrium, body, left ventricle, left atrium, lungs - ANSWER right
atrium, right ventricle, lungs, left atrium, left ventricle, body
,Two athletes are in competition, weightlifting meet and a marathon. What energy
systems will each be utilizing, respectively? - ANSWER phosphagen and oxidative
As body size of an athlete increases, which of the following describes what happens to
body mass and muscular strength? - ANSWER Body mass increases faster than
muscular strength.
The Krebs cycle occurs in what part of the cell? - ANSWER mitochondria
The pelvis is _____________ to the patella. - ANSWER superior
An aerobic endurance athlete is seeking to have an advantage over his competitors.
Which type of training would shift his lactate threshold, and in which direction, to
improve his performance? - ANSWER high intensity; shifts to the right
Which anatomical plane separates the body into left and right portions? - ANSWER
sagittal
The law of mass action states that
- A stronger action potential cannot produce a stronger contraction.
- The concentrations of reactants or products will drive the direction of the reactions.
- Weight or mass of an object creates a stronger action potential
- the rate of product formation greatly depends upon the concentration of the reactants.
- ANSWER The concentrations of reactants or products will drive the direction of the
reactions.
At what two levels do eighty-five to ninety percent of all intervertebral disk herniations
occur? - ANSWER L4-L5 & L5-S1
, An athlete in the weight room is doing the barbell bench press. If he accelerates a mass
of 75 kg at a rate of 2 m/s², how much force is he exerting? - ANSWER 150 N
Which of the following defines the portion of the total energy cost of exercise that must
be supplied through anaerobic mechanisms because the aerobic system cannot
respond immediately to the initial increase in the demand for energy?
- oxygen debt
- recovery O2
- oxygen deficit
- EPOC - ANSWER oxygen deficit
Which of the following is a branched-chain amino acid?
- alanine
- aspartate
- glutamate
- isoleucine - ANSWER isoleucine
Two individuals of the same body mass are lifting weights. Assuming all other factors to
be equal, the person with tendons inserted on the bone _______________ the joint center
should be able to lift _______________ weight. - ANSWER farther from; a heavier
Which of the following are the two main divisions of the skeletal system?
- upper & lower body
- appendicular & axial
- medial & lateral
- endergonic & exergonic - ANSWER appendicular & axial
