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WITS PERSONAL TRAINING EXAM
|COMPREHENSIVE QUESTIONS WITH
CORRECT ANSWERS 2026
Rotational Inertia - correct-answer - A resistance to change in the rotation of a
body segment around the joint axis. (Depends on the mass and distribution of the
joint)
Angular Momentum - correct-answer - Quantity of angular motion. (Ex. the faster
a body segment moves and the greater is rotational inertia)
Concentric - correct-answer - The action that requires the muscles to overcome
the force of gravity. (Muscle shortens)
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Eccentric - correct-answer - The action that follows the direction of gravity.
(Muscle lengthens)
Ballistic Movement - correct-answer - Fast movement that occurs when
resistance is minimal.
Isometric Action - correct-answer - Muscle force is equal to the opposing force;
muscle length does not change.
Newton's first law of motion - correct-answer - A body in motion stays in motion
until acted on by an outside force.
Sacromere - correct-answer - Fundamental units of muscle contraction.
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Actin - correct-answer - A thin filament that slides over the thick myosin filament,
pulling the Z lines to the center of the sacromere (Sliding Filament Theory)
Sacroplasmic Reticulum - correct-answer - The
_________________________releases calcium that binds with troponin.
Myofibril - correct-answer - Runs the length of the muscle.
Muscle Fiber - correct-answer - a cylindrical cell that has repeated light and dark
bands, giving it the name striated muscle.
A band - correct-answer - The portion of the sacromere composed of Myosin an
Actin. (The length remains constant during muscle shortening)
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I Band - correct-answer - An area of the sacromere composed of actin and is
bisected by the Z line. (The length decrease during muscle shortening)
H zone - correct-answer - The middle area of the sacromere that contains only
myosin.
Type 1 Fibers - correct-answer - Fibers that contract slowly to produce low force;
they resist fatigue (52%)
Type 11a Fibers - correct-answer - Fibers that contract fast, produce great force
and resist fatigue (33%)
Type 11x Fibers - correct-answer - Fibers that contract fast, produce great force
and fatigue quickly (13%)
WITS PERSONAL TRAINING EXAM
|COMPREHENSIVE QUESTIONS WITH
CORRECT ANSWERS 2026
Rotational Inertia - correct-answer - A resistance to change in the rotation of a
body segment around the joint axis. (Depends on the mass and distribution of the
joint)
Angular Momentum - correct-answer - Quantity of angular motion. (Ex. the faster
a body segment moves and the greater is rotational inertia)
Concentric - correct-answer - The action that requires the muscles to overcome
the force of gravity. (Muscle shortens)
,2|Page
Eccentric - correct-answer - The action that follows the direction of gravity.
(Muscle lengthens)
Ballistic Movement - correct-answer - Fast movement that occurs when
resistance is minimal.
Isometric Action - correct-answer - Muscle force is equal to the opposing force;
muscle length does not change.
Newton's first law of motion - correct-answer - A body in motion stays in motion
until acted on by an outside force.
Sacromere - correct-answer - Fundamental units of muscle contraction.
,3|Page
Actin - correct-answer - A thin filament that slides over the thick myosin filament,
pulling the Z lines to the center of the sacromere (Sliding Filament Theory)
Sacroplasmic Reticulum - correct-answer - The
_________________________releases calcium that binds with troponin.
Myofibril - correct-answer - Runs the length of the muscle.
Muscle Fiber - correct-answer - a cylindrical cell that has repeated light and dark
bands, giving it the name striated muscle.
A band - correct-answer - The portion of the sacromere composed of Myosin an
Actin. (The length remains constant during muscle shortening)
, 4|Page
I Band - correct-answer - An area of the sacromere composed of actin and is
bisected by the Z line. (The length decrease during muscle shortening)
H zone - correct-answer - The middle area of the sacromere that contains only
myosin.
Type 1 Fibers - correct-answer - Fibers that contract slowly to produce low force;
they resist fatigue (52%)
Type 11a Fibers - correct-answer - Fibers that contract fast, produce great force
and resist fatigue (33%)
Type 11x Fibers - correct-answer - Fibers that contract fast, produce great force
and fatigue quickly (13%)
