Biomechanics of Human Movement

Balance, Follow Through, Leverage (levers) Torque,

and Weight Transfer

Balance

Definition:• Ability to stay in a point of

nothingness with no outward tension

Examples:• Defensive stance• Medicine ball push ups.

Pictures of Balance

• Erectors, quads, and abs are used for balance

Follow Through

Definition:• The completion of a form of

movement that results in relaxationExamples:• Golf club ends up over the shoulder• Tennis racquet ends up past the

body

Images of Follow Through

• Muscles used (in golf) include quadriceps, hamstrings, abductors, adductors, obliques, gluteus maximus, latissimus dorsi, trapezius, pectorals, deltoids, triceps and biceps. That’s a LOT of muscles!

Leverage (Levers)

Definitions:• The exertion of force by means

of a lever• A device you apply force toExample:• Bicep curl

Pictures of Leverage

• In torque, muscles act as effort forces to move loads.

Torque

Definition:• A twisting force that often

causes rotationExample:• Twisting Oblique Crunch

Pictures of Torque

• Trapezius, deltoids, abdominals, pectorals, and Latissimus Dorsi are used in torque.

Weight Transfer

Definition:• Stepping power• The ability to shift weight from

one point to another. Example:• Throwing

Pictures of Weight Transfer

• Weight transfer works with the quadriceps, latissimus dorsi, and trapezius.

Bibliography• http://www.brucebucks.com/wp-content/uploads/2011/06/balance.jpg

• http://www.dietpsyche.com/wp-content/uploads/2010/01/balance_yoga.jpg

• http://2.bp.blogspot.com/_yf1uL7B9y5o/Rx3zopDkvRI/AAAAAAAABDA/wUqOnr6ksxs/s400/barehands.jpg

• http://www.podiatry.com/images/eZines/FootChain/14/img2.jpg

• http://1.bp.blogspot.com/-alvB-hhj8Q8/TauG1jb7bGI/AAAAAAAAAFE/8JW7RH3yaVc/s1600/TorqueSystem-FullFront.png

• http://www.sportsclipart.com/sports_clipart/young_man_throwing_a_football_probably_a_quarterback_0515-0911-0223-2250_SMU.jpg