movement analysis of the qb throw

13
Biomechanics of a Quarterback Throw By: Matt DeGolyer & Kendra Getz

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Page 1: Movement Analysis of the QB throw

Biomechanics of a Quarterback Throw

By: Matt DeGolyer & Kendra Getz

Page 2: Movement Analysis of the QB throw

Introduction History of QB ThrowRole of a QB ThrowPhases for QB ThrowVisual of Throwing PhasesQuarterback Video/Dart-fishCommon Injuries

Page 3: Movement Analysis of the QB throw

History of QB ThrowMost historians believe that the QB

throw was originated in 1913 but some believe that it came 7 years before that. ◦“It is the centerpiece of the most popular

sport in the country, the play that determines the direction and outcome of most games and makes the NFL quarterback the most important of all team athletes.” (Layden 2010)

Benny Friedman '27

Page 4: Movement Analysis of the QB throw

Role of a QB ThrowA QB throw is used in the offense

of a football game to advance down the field through the air.

Although there are many variations to this motion of movement, we are examining the ideal or proper motion.

Page 5: Movement Analysis of the QB throw

Phases for QB ThrowWind-Up PhaseLater Cocking PhaseAcceleration PhaseFollow-through Phase

Page 6: Movement Analysis of the QB throw

Wind-Up PhaseQB is gaining the

momentum to release the ball to a receiver. His left foot is in plantar flexion, with his right hip externally rotated with his knee in slight extension.

His throwing shoulder is externally rotated, with his elbow in flexion, and wrist in extension. His fingers are in flexion around the football.

Page 7: Movement Analysis of the QB throw

Later Cocking Phase The QB is starting to go in a

forward motion in preparation to throw the football.

The QB starts with their left foot placed slightly in front of their right foot for balance with both feet are in plantar-flexion. With his right knee in slight flexion. He will have his right elbow in 90˚ of flexion with his right shoulder in hyperextension. His left elbow is in flexion with his shoulder slightly internally rotated.

Page 8: Movement Analysis of the QB throw

Acceleration Phase During this phase the QB is

releasing the football while opening and hips to where he is throwing the football. His throwing arm is in full extension with his wrist in extension and metacarpals in slight flexion from gripping the ball. His shoulder goes from external to internal rotation. His non-throwing arm is still in flexion throughout this motion.

QB’s hip is internally rotated with the left knee in slight extension and the ankle in slight plantar flexion.

Page 9: Movement Analysis of the QB throw

Follow-Through Phase The QB has released the

football at this point and the follow-through is one of the most important phases to a throw.

The left ankle is in plantar flexion with the knee in slight extension and the hips are internally rotated. The right ankle is still in plantar flexion with the right knee in full extension.

Flexion of the wrist and metacarpals and the shoulder is still going through internal rotation.

Page 10: Movement Analysis of the QB throw

Visual of Throwing Phases

Page 11: Movement Analysis of the QB throw

Quarterback Throw

http://www.youtube.com/watch?v=xsWrp-yI7eA

• Justin Minnich • Junior and QB of the Manchester College Football

Team

Page 12: Movement Analysis of the QB throw

Common Mistakes in QB Throw

Proper Form◦Dropping the elbow◦Not proper arm toward the target◦Hip Rotation◦Follow-Through◦Shifting weight properly◦Wrist Movement

Ball Grip◦Spin motion of the ball

Breathing Techniques

Page 13: Movement Analysis of the QB throw

Work-Cited Page 1. 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

2. Layden, T. (2010). THE ART OF THE PASS. Sports Illustrated, 113(17), 52-60. Retrieved from http://web.ebscohost.com/ehost/detail?sid=50de7128-46d6-4f1b-b8e6-8c60253dcfce%40sessionmgr15&vid=4&hid=18&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=aph&AN=54969629

3. Krishnan, S. G., Hawkins, R. J., & Warren, R. F. (2004). The shoulder and the overhead athlete [pp. 318-339]. Retrieved from http://books.google.com/books?id=BegAqnMt3rwC&pg=PA318&dq=overhead+football+throw&hl=en&ei=SyW-TcD1E8XW0QGX79G4BQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CEgQ6AEwAA#v=onepage&q=overhead%20football%20throw&f=false

4. Wilk, K. E., Reinold, M. M., & Andrews, J. R. (2009). The athlete's shoulder [Second Edition]. Retrieved from http://books.google.com/books?id=fI5Nu030NqIC&printsec=frontcover&dq=the+athlete's+shoulder&hl=en&src=bmrr&ei=_ia-TZKRAaSU0QHb9vHsBQ&sa=X&oi=book_result&ct=result&resnum=1&sqi=2&ved=0CCoQ6AEwAA#v=onepage&q&f=false

5. Iannotti, J. P., & Williams Jr., G. R. (2007). Disorder of the shoulder diagnosis and management [Volume 1]. Retrieved from http://books.google.com/books?id=ssX25YIdAFIC&printsec=frontcover&dq=Disorders+of+the+shoulder:+diagnosis+and+management&hl=en&ei=-ie-TZbtKuX50gHRn7C4BQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CFcQ6AEwAA#v=onepage&q&f=false