WELCOME TOKIN 241A: Biomechanics

Course Instructor: Professor Bob Vigars web site http://instruct.uwo.ca/kinesiology/241a

Student obligations in class out of courtesy & respect for all:Student obligations in class out of courtesy & respect for all:

1. During class, only talk when requested by instructor1. During class, only talk when requested by instructor2. Put away any newspapers and be attentive to class2. Put away any newspapers and be attentive to class3. Turn off cell phone and internet connection3. Turn off cell phone and internet connection4. No food or drink in classroom4. No food or drink in classroom5. Place any refuse in appropriate bins in classroom5. Place any refuse in appropriate bins in classroom

BIOMECHANICS APPLICATIONS

Basic Movements

TargetMovements

AdaptiveMovements

Walk PullRun PushJump ThrowSwim StrikeLift

Daily WorkSport

Air EnvironmentWater Environment

Ergonomics

GerontologicalOrthopedic

Sport InjuriesProsthetic

OPO: Project for Max DistanceHORZ

OPO: Project for Max DistanceVERT

OPO:Project forAccuracy

OPO:Accuracy

with Speed

OPO: Manipulate a Resistance

OPO: Move Over a Timed Distance

Move Body in an Ideal or Model Pattern

                                                                                                                     

OPO: Interact with the Environment

DEFINITIONSBiomechanics

- mechanics of structure & function Mechanics - statics & dynamicsStatics - nonmoving systemsDynamics - kinetics & kinematicsKinetics - forces that cause movementKinematics - describing motion

Kinetics - forces

buoyancycentripetalelasticityfluid dragfluid lift

frictiongravitymusclepressurereaction

Kinematics- describe movementvelocity - m/sec., degrees or rads/sec. (57.3°) acceleration - change v OR change directiondisplacement - in meters or degrees / radiansmomentum - M = mv (linear)

ORL = I (rotary)

Efficient Movement

minimal energy expenditurenecessary for endurance sports and

repetitive tasks in laborallows performer to endure longerallows performer to performer faster with

less energy expended

Effective Movementnot concerned with efficiency

most appropriate movements to achieve Mechanical Purpose [MP] aka Overall Performance Objective [OPO]

most appropriate sequence of movements [e.g. large parts then small parts]

Assignment for Next Class

Read Chapter 1 pages 1-6Answer Questions # 1,3,5,6 on page 6Read Module A pages 7-22Answer Questions # 1,3,4,5,6 on page 22

http://instruct.uwo.ca/kinesiology/241a