PPT-An Introduction to Biomechanics

PSK 4U Lecture Series A field within Kinesiology The science of human movement Applying mechanical principles to the human body eg Force velocity acceleration centre of gravity Internal forces produced by muscles and tendons working against external forces. MANNING 12 LEE MARGETTS 13 MARK R JOHNSON PHILIP J WITHERS WILLIAM I SELLERS PETER L FALKINGHAM PAUL M MUMMERY PAUL M BARRETT AND DAVID R RAYMONT School of Earth Atmospheric and Environmental Sciences and The Manchester Museum University of Manchest Introduction amage to articular cartilage is a common condition affectingthe joints of millions ofpeople in theA alone This damage is complicated by the poor regenerative capacity of adult articular cartilage and the disability and pain that accompan Biomechanics of the forehand strokeITF Coaches Education ProgrammeOriginal article, R. (2001). ITF CSSR, 24, 6- CoachSeries Copyright Hideyuki Ishii (Corresponding Author) is with Rikkyo University, Niiza-shi, Saitama, Japan; the Tokyo Institute of Technology, Meguro-ku, Tokyo, Japan; and with the Institute of Health and Sports Scie positively and significantly with release speed. Also, the vertical impulse during contact and average propulsion at the end contact correlated These findings suggest for high levels the leg trunk mus . . –. . Chiari. and . syringomyelia. . Kent-Andre Mardal. Dept. . of. . Mathematics. , . University. . of. . Oslo / . Center of Biomedical Computing, . Simula Research Laboratory . Lauren Dawson & Gabrielle . Kosziwka. . Lecture Overview. Use of anthropometric measurements. Direct Measurements. Height (Standing and Sitting). Weight (mass). Head Circumference. Mid-Upper Arm Circumference. By: Matt . DeGolyer. . & Kendra Getz . Introduction . History of QB Throw. Role of a QB Throw. Phases for QB Throw. Visual of Throwing Phases. Quarterback Video/Dart-fish. Common Injuries. History of QB Throw. Spike . Carli Smith. Cody . Eitzmann. Ryan . Dubberke. Objectives of a Volleyball Swing. Achieve maximum vertical height through the approach to the net. Swing at highest contact point . Generate as much arm swing as possible driving through the ball after hitting contact point. Sternoclavicular and Acromioclavicular Joints. SC Joint. Saddle-type, but functions as ball & socket. 4 ligaments. Strong, but MOBILE. ROM=60° elevation and 25-30° anterior and posterior movement. Bending load:. Compression strength greater than tensile strength. Fails in tension. Figure from: . Tencer. . Biomechanics in . Orthopaedic. . Trauma, Lippincott, 1994.. Fracture Mechanics. Torsion. humerus. and carpals. Skeleton of the Hand. The carpus (wrist) consists of 8 small bones (carpals). Two rows of carpal bones. Proximal row - scaphoid, lunate, triquetrum, pisiform. Distal row - trapezium, trapezoid, capitate, hamate. Talocrural. Joint. Uniaxial. hinge joint. The talus is wider . anteriorly. than . posteriorly. Talus is convex AP. Medial . malleolus. is shorter than the lateral. Arthrokimenatics. . talocrural. NIOSH Report & Others. 500,000 workers suffer overexertion injuries each year. 60 % involve lifting and lower back. Compensation & indirect costs total $27 – $56 Billion (1991).. 10 % involve upper extremities (fingers, hand, wrists, arms, & shoulders) due to cumulative trauma disorders (1987).