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CSCS-Exercise Science Question and answers verified to pass
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CSCS-Exercise Science Question and answers verified to pass How does an increase in rate of force development (RFD) affect the force-velocity curve? - correct answer Shifts the curve to the right The force-velocity curve is a graphic representation of the relationship between force and ...

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  • November 28, 2024
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  • 2024/2025
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CSCS-Exercise Science Question and
answers verified to pass
How does an increase in rate of force development (RFD) affect the force-
velocity curve? - correct answer ✔Shifts the curve to the right




The force-velocity curve is a graphic representation of the relationship
between force and velocity and is a spectrum of the different types of strength.
Movements that produce the highest force have the lowest velocity, and
movements with the highest velocities generally have the lowest force output.
When an athlete increases their rate of force development (RFD), the curve
shifts to the right, indicating that they are capable of producing higher forces
more quickly. In most sports, RFD is more important for performance than
max strength.


During which of the following exercises does the largest muscle of the back
play the role of agonist? - correct answer ✔One-arm dumbbell row




The largest muscle of the back is the latissimus dorsi. It is an agonist during
the one-arm dumbbell row because it creates shoulder extension during the
movement. An agonist, or primary mover, is most directly involved in bringing
about a muscle action. The latissimus dorsi plays a significant role in pulling
the dumbbell from a hanging position up towards the torso.
Synergists in this movement include the teres major, trapezius, rhomboids,
and posterior deltoids.

,When training aerobically, which chamber of the heart mostincreases in
volume and wall thickness? - correct answer ✔Left ventricle




The left ventricle hypertrophies the most because of the repeated forceful
contractions to increase blood flow during exercise. During aerobic exercise,
the amount of blood that returns to the heart increases, which then results in a
more forceful contraction of the left ventricle in order to deliver oxygen to the
working tissues.
The strength of contraction of the left ventricle is greater than that of the right
ventricle or the atria because the left ventricle is responsible for pumping
blood throughout the tissues of the entire body. The other structures of the
heart do not exhibit the same hypertrophic response as the left ventricle with
consistent aerobic training.


Moment arm is the perpendicular distance from the line of action of the force
to the fulcrum. How does the resistive moment arm change during the portion
of a dumbbell biceps curl from 90 degrees of elbow flexion to full contraction?
- correct answer ✔it gets shorter




The resistive moment arm during a biceps curl describes the horizontal
distance between the fulcrum (the elbow joint) and the resistive force (the
dumbbell). This distance is longest when the arm is bent to 90 degrees and
gets shorter above and below this point. The resistive moment arm is the
shortest when the arm is either fully flexed or fully extended.
In simpler terms, if the elbow remains at your side throughout the entire
movement, when the weight is farther out in front of the body (at the midway
point), the moment arm is longest, and when the weight is closest to the body
(at the top and bottom of the movement), the moment arm is shortest.

,For this reason, the movement will be most difficult when the resistive moment
arm is longest.


A movement that involves active muscular effort and uses a bouncing-type
motion in which the end position is not held is known as what? - correct
answer ✔Ballistic stretch




Ballistic stretching involves using a bouncing motion, and although it is often
used during the warm-up, it can create problems and potentially cause injury if
not done correctly. A preferred type of warm-up stretch would be dynamic
stretching, which involves sport-specific and non-specific drills to actively
move through a ROM to prepare the body before an activity.


What occurs when a muscle enters the relaxation phase of muscular
contraction? - correct answer ✔Calcium moves into the sarcoplasmic
reticulum




At rest, calcium is stored in the sarcoplasmic reticulum. When an action
potential triggers a muscle contraction, calcium is released from the
sarcoplasmic reticulum and pumped into the muscle (including the myofibrils).
When the motor nerve is no longer stimulated, calcium moves back into the
sarcoplasmic reticulum and out of the muscle and myofibrils.


Which of the following is an example of a body type category? - correct
answer ✔Mesomorph

, Somatotyping is a method of categorizing the human physique. There are
three fundamental somatotypes:
Ectomorphs are slender and bony
Mesomorphs are muscular and have broader shoulders
Endomorphs are rounder and have broader hips


Which of the following muscles is not involved with maintaining the stability of
the shoulder joint? - correct answer ✔Teres major




When considering stabilization of the shoulder, we are referring to stabilizing
the glenohumeral joint. This largely depends on the glenoid labrum, the joint
synovium, and capsules, ligaments, muscles, tendons, and bursae in addition
to the rotator cuff and the pectorals.
The rotator cuff muscles include the supraspinatus, infraspinatus,
subscapularis and the teres minor.
The teres major is grouped within muscles of the upper back. It assists the
latissimus dorsi in the adduction of the humerus and also contributes to
medial rotation.


A core exercise that emphasizes loading the spine directly or indirectly can be
further described as what? - correct answer ✔Structural exercise




Core exercises are multi-joint exercises that involve large muscles in the body
and have a significant application to sport and other activities. Core exercises
that involve loading the spine directly or indirectly are called structural
exercises. Structural exercises involve and challenge postural stabilization
throughout the movement. If you perform a structural exercise at explosive
speed, it is then referred to as a power exercise.
A back squat is an example of a structural exercise.

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