Planes and Axes
This plane is one that divides you into equal right and left sides
sagittal plane
Your main elbow flexors when performing a bicep curl include which three muscles?
biceps brachii
brachialis
brachioradialis
The class of levers that is most common in the structure of the human body is:
3rd class
When you heel strike, your ankle should be in what joint position?
dorsiflexion
The antagonist to latissimus dorsi, in a vertical pull is:
deltoid
This axis allows your shoulder to abduct and adduct through the frontal plane.
sagittal
The most superficial muscle of the posterior lower leg is:
gastrocnemius
Doing a back extension exercise and raising the arms above the head would be and example of progressing the exercise by...
lengthening the lever
Stride length is equal to how many step lengths?
2
during the eccentric phase of the squat, which three muscle groups are the agonists?
glutes, quads and plantar flexors
Your upper extremities move through this plane when performing cable chest flies (horizontal shoulder adduction).
transverse
Two muscles used to retract the scapula in rowing exercises are:
rhomboids, trapezius (middle and lower fibres)
A line perpendicular to the floor from the centre of mass is called the:
line of gravity
What always distinguishes running gait from walking gait?
the presence or absence of a float phase (no feet touching the ground).
During the descent of a squat, if the trunk moves too far forward, this could be a sign of weakness in the:
glutes (quad dominence)
When performing a side lunge, your torso moves through the ______________ plane.
frontal
Two muscles of hip extension are:
glutes and hamstrings
During the gait cycle which is the most proximal axis of rotation in the lower body?
The hip joint
Which muscle of the hip are used to slow down the leg swing in preparation for heel strike?
Glutes
The agonist muscles in a push-up are:
pectoralis major and triceps
When performing a knee extension exercise, the knee rotates about the _______ axis.
frontal
The regions of the spine from superior to inferior are:
cervical, thoracic, lumbar, sacral, coccyx
Applying your knowledge of levers to the gait cycle, which class of lever are each of the lower leg segments?
3rd
If a spinal curve is increased, the muscles on the concave side will tend to become ______________, while the muscles on the convex side will tend to become ________________.
short and tight; lengthened and weak
While in the supine position doing exercises involving flexion at the hip joints, activation of the _______________ is required to prevent anterior pelvic tilt and lordosis.
Rectus abdominus