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Muscular Analysis: Push Up

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by

Ariane Robinson

on 16 November 2012

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Transcript of Muscular Analysis: Push Up

Muscular Analysis: Push-Up Micah Davis, Ariane Robinson, Victoria Frink, and Brandon Crockett Video Purpose Description Exercises Questions? Muscles Involved Biomechanical Applications Prevent unnecessary injury due to incorrect form
Show which muscles should be strengthened while performing a push-up
To show how these muscles should be exercised
The push-up is the ultimate barometer of fitness.
It tests the whole body, engaging muscle groups in the arms, chest, abdomen, hips and legs.
The push up requires the body to be taut like a plank with toes and palms on the floor. Deltoid- raises and lowers the body
Pectoralis Major and Minor- aids in flexion and extension
Triceps- raises and lowers the body and aids in arm extension
Rectus Abdominus-stabilizes the rest of the body
Obliques-Prevent lateral shifting and twisting. Deltoid- Cable bar, behind neck press, shoulder press
Pectorals- Chest press, bench press
Rectus Abdominus- Crunches, planks,
Triceps- Kickbacks, dips, close grip bench press Our bodies create motion and perform work through the application of levers from our joints.

First Class: the fulcrum is between the motive and resistive force. Phases of a push up
1. Plank
2. Incline Push Up
3. Push Up from the knees
4. Knees elevated push up
5. Negative Push up
6. Single Push up Incorrect Push ups
1. “T Set up”
2. Sagging Push-up”
3.“Stopping Short”
-Involves performing half repetitions (not going all the way down)
*IN ORDER TO DO A PUSH UP EFFECTIVELY*
-Must be able to do the proper phases/progressions Video http://vimeo.com/22852215 http://vimeo.com/22872625 http://vimeo.com/22872917 http://vimeo.com/22873160 http://vimeo.com/22873328 http://vimeo.com/22873650 Phases of a Push up Biomechanical Applications Second Class: the resistive force is between the fulcrum and the motive force. Biomechanical Applications Third Class: the motive force is between the fulcrum and the resistive force. (Most joints apply this kind of lever) Biomechanical Applications The push-up motion utilizes the actions of a Second Class lever:

The fulcrum is formed by the tips of the toes, gravitational force acting through the center of gravity is the resistance, and the motive force is generated by the reaction force at the hands. Biomechanical Applications Quantitative Analysis:

Degrees of Motion
Elbow Flexion: 0 - ~90˚

If ~90˚ is the flexion angle for maximal force production of the elbow, what is the optimal extension angle? Why are "Girl" Push-Ups so much easier? Mechanical advantage is achieved by bringing the fulcrum of the lever closer to the point of resistance. Although the load during a push-up is limited by an individual's body weight and anthropometry (body type), many biomechanical variations of the exercise can be performed. These variations may involve altering hand and foot positions, which impacts muscle recruitment patterns and joint stresses. Girl push-up
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