UMass Amherst KIN 430 - linear-kinematics-2 (14 pages)

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linear-kinematics-2



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linear-kinematics-2

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Pages:
14
School:
University of Massachusetts Amherst
Course:
Kin 430 - Biomechanics

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Linear Kinematics of Human Movement Ch 8 Linear Kinematics of Locomotion Part II Basic Kinematic Quantities Position Displacement Distance Velocity Speed Acceleration Differentiation Integration Linear Kinematics of Locomotion Uniform Acceleration Projectile Motion In most forms of human locomotion a basic pattern of movement is repeated over and over In these situations the magnitude of the velocity is equal to cycle length times cycle rate For example walking velocity stride length stride rate running velocity stride length stride rate swimming velocity stroke length stroke rate wheelchair velocity stroke length stroke rate Copyright 2014 Brian R Umberger Ph D University of Massachusetts Amherst Linear Kinematics of Running How do stride length and stride rate contribute to forward progression over a wide range of running velocities How can these results be explained Linear Kinematics of Swimming How are the comparable patterns for swimming stroke length and rate similar to running stride length rate and how do they differ Why are the results somewhat different for swimming 1 Linear Kinematics of Sprinting Over the last 100 years the world record time for the 100 m has improved considerably Linear Kinematics of Sprinting This means that sprinters average velocities have increased over time Men s 100 m 1912 Don Lippincott v 100 m 10 6 s 9 43 m s 2009 Usain Bolt v 100 m 9 58 s 10 44 m s 11 improvement Women s 100 m 1922 Mary Lines v 100 m 12 8 s 7 81 m s 1988 Flo Jo v 100 m 10 49s 9 53 m s 22 improvement world record times for men s 100 m Linear Kinematics of Sprinting Linear Kinematics of Sprinting 1988 Olympics 100 m Men s Sprint Two questions for your consideration Ben Johnson What are the main characteristics of the velocity profile for a world class sprinter time 9 79 s avg vel 10 21 m s peak vel 12 05 m s Carl Lewis time 9 92 s avg vel 10 08 m s peak vel 12 05 m s Stripped of gold medal and world record for use of the steroid stanozolol How do they differ from



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