Class Notes (1,100,000)
CA (650,000)
Western (60,000)
Kinesiology (4,000)
2241A/B (500)
Lecture 3

Kinesiology 2241A/B Lecture Notes - Lecture 3: Humerus, Anatomical Terms Of Motion, Ankle

Course Code
Kinesiology 2241A/B
Thomas Richard Jenkyn

This preview shows half of the first page. to view the full 2 pages of the document.
Kin 2241b Introductory Biomechanics Keenan Vanderkooi
Lab 3 250866706
1. A) Rugby: performing the lateral pass in rugby is an example of an open skill. This is because the
playing field is constantly unpredictable; meaning the sequences of the movement could vary in
terms of technique or style depending on the situation at hand.
Volleyball: performing the spike in volleyball is an example of an open skill. This is because the
set given to the hitter will change depending on the first touch or dig that was given to the setter.
Therefore, the hitter will have to adapt to the way that the ball was set into the air in order to get it
over the net. Apart from this, a hitter may change their mind on whether or not they desire to spike
or tip the ball halfway through the skill.
B) Rugby: the OPO is to accurately project the ball towards a teammate with maximum horizontal
velocity and spin. If the ball is rotating around an axis with angular momentum, otherwise known as
a spiral, it possesses gyroscopic stability and will therefore point in one direction. This direction
points toward the receiver of the pass. Due to the fact that the vector is point down through the ball,
the teammate can predict the overall performance objective of the passer.
Volleyball: the OPO is to jump with a vertical component high enough for the hand to be above the
net, or above the opponent’s block. This is done to project the ball over the net, but the ball must also
have both a downwards vertical component, with a horizontal component that together produce a
resultant that points toward an open spot on the court.
2. A) Rugby: the wheel-axle body segment motions are produced by the shoulder joint during internal
and external rotation, the hip joint during internal and external rotation, the radio-ulnar joint during
pronation and supination, and the torso during internal and external rotation. The body segment
motions involving lever actions are at the elbow joint during flexion and extension, flexion and
extension at the wrist joint to spin the ball, the knee joint during flexion and extension while running,
ankle joint during plantar flexion and dorsiflexion for springing off and landing on the ground, and
the hip joint during flexion to slightly lean forward.
Volleyball: the body segment motions that produce wheel-axle motions are the torso during
internal rotation, the shoulder joint during internal rotation, and the hip joint during internal
rotation. The body segment motions that produce lever actions are the elbows during flexion and
extension, the wrist joint during flexion to snap the ball downwards, and the shoulder during flexion
while the arm swings along the sagittal plane.
B) Rugby: the sequence of body segment motions from first to last are plantar flexion of the ankle
joint, simultaneous rotation of the hip joint, shoulder joint, and torso from internal to external,
pronation and supination of the radio-ulnar joint to transfer the ball from one side of the body to the
other, flexion and extension of the wrists to spin the ball, and extension of the elbow to extend the
ball towards the teammate.
find more resources at
find more resources at
You're Reading a Preview

Unlock to view full version