PE 2800 Lecture Notes - Lecture 15: Knuckleball

25 views2 pages
Published on 15 May 2017
School
Course
Core Concepts of Kinesiology
Article by Jackie L. Hudson
Range of Motion
o distance that a body, body part, or an object moves during a time interval of interest
o ROM  force
o Ex: wt. lifter ROM when force (fatigue)
Speed of Motion
o speed  force
o Ex: walk jog run ( speed and force needed)
o ROM + time
Number of Segments
o Amount of ROM
o Minimal ROM = inactive
o Mod-max ROM = active
o Ex: archerymost are stationary
o Ex: javelinmost are mobile
o Novicethrowing—freeze out certai segets, skill improves more segments used
o Mastermay use too many segments (strong mover on a sub-max movement)
Nature of Segments
o Forward, backward, R/L, twisting
o Twisting generates the greatest speed, requires the most skill
o To change amount of long-axis motion, change nature by change speed of segment
Balance
o Degree of stability or mobility
o Greatest stability is achieved by maintaining the line of gravity near the middle of the
BOS
o Ex: golfneed a degree of mobility during swing, but also more stability
o mobility  BOS
o accuracy  stability
o Ex: speed of bicycle  stability
o Ex: thrower ROM  BOS
Coordination
o Body action are times and sequenced
o Jerky or sporadic uncoordinated
o Smooth or graceful coordinated
o Skilled movers, move body segments in
o unison when activity is heavy
find more resources at oneclass.com
find more resources at oneclass.com
Unlock document

This preview shows half of the first page of the document.
Unlock all 2 pages and 3 million more documents.

Already have an account? Log in

Get OneClass Notes+

Unlimited access to class notes and textbook notes.

YearlyBest Value
75% OFF
$8 USD/m
Monthly
$30 USD/m
You will be charged $96 USD upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.