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/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