for their constant support and friendship during the uncertainty of the COVID-19 pandemic.I would like to thank Charles Owen for supplying the helmets for my study.I extend thanks to my family for supporting me throughout my academic career. My family's tremendous support and encouragement through shoulder surgery and rehabilitation made it possible for me to complete my graduate studies. Lastly, I would like to thank my friends for being there to support me along the way and make these years so memorable.