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The Biomechanics of Throwing a Football

The Biomechanics of Throwing a Football. Tasi Kelemete . Grip . Determine movement and release Finger in flexion over the laces Space between ball and pocket of the hand Wrist in extension Shoulder at 90 degrees, elbow at 45 degrees flexion. Stance . Shoulder perpendicular to target

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The Biomechanics of Throwing a Football

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  1. The Biomechanics of Throwing a Football Tasi Kelemete

  2. Grip • Determine movement and release • Finger in flexion over the laces • Space between ball and pocket of the hand • Wrist in extension • Shoulder at 90 degrees, elbow at 45 degrees flexion

  3. Stance • Shoulder perpendicular to target • Feet shoulder width apart • Non-dominant leg in plantar flexion • Hip externally rotated • Transfer of weight for power • Front toe point to target

  4. Throw • Ball placed beside the ear, thrown in a forward sagittal plane • Non-dominant hand as guide, release midway through throw and come in hyperextension past the body • Force X mass = acceleration • Arm full extension, should going from external to internal rotation • Wrist and fingers in flexion and end at opposite hip

  5. Subject 1

  6. Subject 1

  7. Subject 1

  8. Subject 2

  9. Subject 2

  10. Subject 2

  11. Subject 3

  12. Subject 3

  13. Subject 3

  14. Comparison

  15. Comparison Cont.

  16. Qualitative Comparisons • Subject 1 • Full extension, no bend in knees • Dragged leg • No follow through • Didn’t come across his body • Subject 2 and Subject 3 • Very similar in throw and style • Could explain in detail

  17. References • Escamill, R.F. (2009). shoulder muscle recruitment patterns and related biomechanics during upper extremity sport. Sport Medicine, 39(7), Retrieved from http://web.ebscohost.com/ehost/pdfviewer/pdfviewer?sid=ea4111e4-4ccb-4581-b159-ad15f8346bac%40sessionmgr14&vid=4&hid=21 • Football Biomechanics. (2009). Sport Science Info. Retrieved from https://sites.google.com/site/sportsscienceinfo/home/football • Hall, S. J. (2012). Bio Mechanics. (6 ed.). Columbus, OH: McGraw-Hill. • Haywood, K. (2008). Life span motor development. (5th ed., pp. 144-155). Champaign, Illinois : Thomson-Shore, Inc. • Krishnan, S. G., Hawkins, R. J., & Warren, R. F. (2004). The shoulder and the overhead athlete (pp. 318-339). • Layden, T. (2010). The Art of the Pass. Sports Illustrated. Retrieved from http://si.com/vault/article/magazine/MAG1176714/index.htm

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