Chapter 5 Human Movement Science Flashcards
the length-tension relationship (LTR) can best be described as:
the ability of a muscle to produce force at its current rate
flexion and extension are two movements that occur in which plane of motion?
sagittal
golfing and swinging a bat are both examples of movement that occur in which plane of motion?
transverse
science concerned with the internal and external forces acting on the human body and the effects produced by these forces is known as?
biomechanics
when a muscle is exerting less force than being placed on it, resulting in the lengthening of the muscle, this is known as what type of contraction?
eccentric
when a muscle shortens at a constant speed over the full range of motion, it is known as what type of contraction?
isokinetic
where is the right foot in relation to the left hand?
contralateral
with which of the following terms is eccentric motion synonymous?
deceleration
which of the following is true of an eccentric (deceleration) motion?
it is known as “a negative” in the health and fitness industry
which muscle action occurs when a muscle is exerting force greater than the resistive force, resulting in shortening of the muscle?
concentric
around which axis does frontal plane motion occur?
anterior- posterior
the force- velocity curve describes the relationship between which of the following?
muscle force and the velocity of contraction. As the velocity of a concentric muscle action increases, its ability to produce force decreases
bending movement in which the relative angle between two adjacent segments decreases?
flexion
what kind of muscle action is raising a dumbbell up against the direction of resistance?
concentric action
adduction is a movement back toward the midline of the body in which of the following planes?
frontal plane
a client practices repeated squat exercises in order to create permanent changes in her technique, what is she exhibiting?
motor learning
as the velocity of a muscular contraction increases, the ability to produce force decreased for which part of the muscle action spectrum?
concentric
scapular elevation refers to which of the following motions of the scapula?
superior
in which plane of motion does a hammer curl occur?
sagittal
horizontal abduction involves the movement of the arm or thigh in the transverse plane from which of the following positions to a lateral position?
anterior
what is the hip joint inferior to?
gastrocnemius
landing a jump is an example of what kind of motion?
eccentric
what term refers to the movement of the arm or thigh in the transverse plane from a lateral position to an anterior position when the joint is in an anteriorly flexed position?
horizontal adduction
As the velocity of a muscular contraction increases, the ability to produce force increases for which part of the muscle action spectrum?
eccentric
