Biomechanics of the Backhand Spring BIOLOGY 438 April 10th 2012 Jabez Yeo
Background Information An acrobatic move in which someone completes a full rotation of the body by: Lunging headfirst into a handstand Springing from the floor with their hands Leaping back to an upright position Performed in various activities, including cheerleading, gymnastics and break-dancing Performer does not see where their hands will land until after the move has begun
Steps to a Backhand Spring Start in resting position Fully extend arms up straight into the air Anteriorly adduct shoulders Start leaning backward while flexing your hips and neck simultaneously Forcefully jump backward while hyperextending your spine, neck and shoulders until your hands reach the floor. While your wrists are also now hyperextended, push up off the floor and simultaneously flex your neck, spine and hips forward until you land on your feet. You should now be back into starting position. Taken from gymnastics website: http://backhandspringhow2.blogspot.com/ Not exactly what Willis did but it gives a good idea of how back handspring actually work Adduct – act of moving a bone toward the midline of the body
Steps to a Backhand Spring Start in resting position Fully extend arms up straight into the air Anteriorly adduct shoulders Start leaning backward while flexing your hips and neck simultaneously Forcefully jump backward while hyperextending your spine, neck and shoulders until your hands reach the floor. While your wrists are also now hyperextended, push up off the floor and simultaneously flex your neck, spine and hips forward until you land on your feet. You should now be back into starting position. Taken from gymnastics website: http://backhandspringhow2.blogspot.com/ Not exactly what Willis did but it gives a good idea of how back handspring actually work Adduct – act of moving a bone toward the midline of the body
Steps to a Backhand Spring Start in resting position Fully extend arms up straight into the air Anteriorly adduct shoulders Start leaning backward while flexing your hips and neck simultaneously Forcefully jump backward while hyperextending your spine, neck and shoulders until your hands reach the floor. While your wrists are also now hyperextended, push up off the floor and simultaneously flex your neck, spine and hips forward until you land on your feet. You should now be back into starting position. Taken from gymnastics website: http://backhandspringhow2.blogspot.com/ Not exactly what Willis did but it gives a good idea of how back handspring actually work Adduct – act of moving a bone toward the midline of the body
Steps to a Backhand Spring Start in resting position Fully extend arms up straight into the air Anteriorly adduct shoulders Start leaning backward while flexing your hips and neck simultaneously Forcefully jump backward while hyperextending your spine, neck and shoulders until your hands reach the floor. While your wrists are also now hyperextended, push up off the floor and simultaneously flex your neck, spine and hips forward until you land on your feet. You should now be back into starting position. Taken from gymnastics website: http://backhandspringhow2.blogspot.com/ Not exactly what Willis did but it gives a good idea of how back handspring actually work Adduct – act of moving a bone toward the midline of the body
Steps to a Backhand Spring Start in resting position Fully extend arms up straight into the air Anteriorly adduct shoulders Start leaning backward while flexing your hips and neck simultaneously Forcefully jump backward while hyper-extending your spine, neck and shoulders until your hands reach the floor. While your wrists are also now hyperextended, push up off the floor and simultaneously flex your neck, spine and hips forward until you land on your feet. You should now be back into starting position. Taken from gymnastics website: http://backhandspringhow2.blogspot.com/ Not exactly what Willis did but it gives a good idea of how back handspring actually work Adduct – act of moving a bone toward the midline of the body
Steps to a Backhand Spring Start in resting position Fully extend arms up straight into the air Anteriorly adduct shoulders Start leaning backward while flexing your hips and neck simultaneously Forcefully jump backward while hyperextending your spine, neck and shoulders until your hands reach the floor. While your wrists are now hyper-extended, push off the floor and flex your neck, spine and hips forward simultanesouly until you land on your feet. You should now be back into starting position. Taken from gymnastics website: http://backhandspringhow2.blogspot.com/ Not exactly what Willis did but it gives a good idea of how back handspring actually work Adduct – act of moving a bone toward the midline of the body
Steps to a Backhand Spring Start in resting position Fully extend arms up straight into the air Anteriorly adduct shoulders Start leaning backward while flexing your hips and neck simultaneously Forcefully jump backward while hyperextending your spine, neck and shoulders until your hands reach the floor. While your wrists are also now hyperextended, push up off the floor and simultaneously flex your neck, spine and hips forward until you land on your feet. You should now be back into starting position. Taken from gymnastics website: http://backhandspringhow2.blogspot.com/ Not exactly what Willis did but it gives a good idea of how back handspring actually work Adduct – act of moving a bone toward the midline of the body
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Research Questions
Sources "Back Handspring." Back Handspring. Web. 07 Apr. 2012.<http://backhandspringhow2. blogspot.com/>. Penitente, Gabriella, Franco Merni, and William A. Sands. "Kinematic Analysis of the Centre of Mass in the Back Handspring: A Case Study." Scribd. Gym Coach, Jan. 2011. Web. 08 Apr. 2012. <http://www.scribd.com/doc/47642886/Kinematic-Analysis-of-the-Centre-of- Mass-in-the-Back-Handspring-A-case-study>.
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