Lecture 24 - Analyzing Throwing Flashcards
1
Q
what is a throwing movement?
A
- segments moving in sequence from closest to furthest from the base to produce curvilinear motion
2
Q
what is the goal of throwing?
A
- maximize the speed of the end of the kinetic link chain
3
Q
what do you need to observe in a throw?
A
- the segment, joint and muscles used
- the timing of each segment
4
Q
how is inertia related to distance from the base?
A
- inertia is smaller further from the base
- because motion starts in the torso, you have to overcome large rotational inertia to throw
5
Q
what is a throw-like kick?
A
- a kick that maximizes the speed of the foot at contact with the ball
- less force
- lower segments have lag
- as you fire proximal segments, you need to stabilize the distal ones
6
Q
what are the 4 rules for comparing similar skills?
A
- smaller and lighter = more segments used
- smaller and lighter = greater radius of rotation
- heavier and larger = greater involvement of muscles at the base
- with racket/bat, eccentric orientation increases radius of rotation
7
Q
what are the 3 types of performance errors?
A
- segmental movement errors (wrong axis, wrong ROM)
- sequencing and timing errors
- lack of strength or power
8
Q
how to develop/teach a throwing skill
A
- start at the distal end
- more precise motion with less power/force