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 relaxation Examples: • 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 to Example: • Bicep curl

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

Torque Definition: • A twisting force that often causes rotation Example: • 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/AAAAAAAA BDA/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/Torq ueSystem-FullFront.png

http://www.sportsclipart.com/sports_clipart/young_man_throwing_a_f ootball_probably_a_quarterback_0515-0911-0223-2250_SMU.jpg