Correlation between Ground Reaction Force and Components of a Punch Force when the Jab is Thrown

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ACKNOWLEDGEMENT

For this research study I would like to take this opportunity to thank everyone my research supervisor, friends and most importantly my family for their limitless support and guidance during the research study.

DECLARATION

I, [Full first name along with the surname], declare that the content used in this dissertation represent my own unaided work through authentic studying and collection of the required data. Beside that the dissertation that I am submitting has not been submitted previously for any sort of academic examination towards any qualification.

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CHAPTER 1: INTRODUCTION

Some clinicians have employed the form skip in rehabilitation and reconditioning programs for athletes recovering from lower extremity injury. Traditionally it has been implemented in the later stages of rehabilitation near return to play, after the athlete has regained the ability to run, but we have successfully used the activity for over 7 years, not as a drill after running but as a progression to running. Athletes demonstrating compensatory action and lack of symmetrical gait during running at particular stages of rehabilitation have been able to perform form skipping with excellent tolerance. Running is an important skill for athletes recovering from lower extremity injuries to attain. Athletic trainers should provide progression activities that not only are safe but also simulate movements an athlete will perform while competing.

Examples of Newton's third law are easy to find. As a professor paces in front of a whiteboard, she exerts a force backward on the floor. The floor exerts a reaction force forward on the professor that causes her to accelerate forward. Similarly, a car accelerates because the ground pushes forward on the drive wheels in reaction to the drive wheels pushing backward on the ground. You can see evidence of the wheels pushing backward when tires spin on a gravel road and throw rocks backward. In another example, rockets move forward by expelling gas backward at high velocity. This means the rocket exerts a large backward force on the gas in the rocket combustion chamber, and the gas therefore exerts a large reaction force forward on the rocket.

This reaction force is called thrust. It is a common misconception that rockets propel themselves by pushing on the ground or on the air behind them. They actually work better in a vacuum, where they can more readily expel the exhaust gases. Helicopters similarly create lift by pushing air down, thereby experiencing an upward reaction force. Birds and airplanes also fly by exerting force on air in a direction opposite to that of whatever force they need. For example, the wings of a bird force air downward and backward in order to get lift and move forward. An octopus propels itself in the water by ejecting water through a funnel from its body, similar to a jet ski. In a situation similar to Sancho's, professional cage fighters experience reaction forces when they punch, sometimes breaking their hand by hitting an opponent's body (Atha, ...