Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Head Accelerations"”.
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Linear and Angular Head Accelerations in Daily Life
… of this study was to determine the linear accelerations, angular rates, and angular accelerations of the center of gravity of the head during daily activities and to determine the effect of angular terms on the linear accelerations. A total of 700 experiments were conducted with 18 subjects …
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Analysis of Linear Head Accelerations From Collegiate Football Impacts
… system that measures and records linear head accelerations to analyze head impacts from collegiate football. The Head Impact Telemetry (HIT) System is an in-helmet system with six spring mounted accelerometers and an antenna that transmits data via radio frequency to a sideline receiver …
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An Analysis of Catcher's Mask Performance to Attenuate Head Accelerations
… the ability of catcher's masks to attenuate head accelerations upon impact with a baseball, and to compare these head accelerations to established injury thresholds for concussions. Testing involved using a pneumatic cannon to shoot baseballs at an instrumented (3-2-2-2 accelerometer array) …
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Measurement of accelerations experienced by rough stock riders
Introduction: Head injury is common in many sports, but it is of particular concern in professional rodeo events. Rough stock events (bareback, saddle bronc, and bull riding) provide multiple opportunities for injury. Head injuries sustained during a rough stock event may be the result of whiplash …
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Head acceleration across youth, high school, and collegiate soccer players
… Soccer is unique in that you can use your head to advance the ball and purposeful heading is an integral part of the game. However, some have suggested that repeated heading of the soccer ball is associated with neurological deficits, though others have claimed that deficits are related to …
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Biomechanical Analyses of Head Acceleration during Contact Sports and Ankle Joint Complex Injury
… the influence of different parameters on head acceleration. Peak head accelerations of 20g to 60g, and rise times were targeted based on measures reported in the literature. A computational model of the impactor system was developed in Adams to determine design parameters such as neck …
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Head Impacts in Hockey and Youth Football: Biomechanical Response and Helmet Padding Characteristics
… in two distinct subcategories of sport related head injury research. The body of work is aimed at increasing the understanding of head impact biomechanics across a broad spectrum of impact scenarios as well as the ability of helmets to affect head impact biomechanics over time. The first study …
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On-Field Measurement of Head Impacts in Youth Football: Characterizing High Magnitude Impacts and Assessing Balance Outcomes
The research presented in this thesis focuses on head impact exposure in youth football. The on-field portion of this research investigated high magnitude head impacts that youth football players experience in games and practices. With previously validated data collection methods, linear and …
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Biomechanics of Head Impacts in Soccer
… rate of concussions in this population. Wearable head impact sensors were evaluated on their ability to accurately count and measure head impacts during a collegiate women's soccer season. Head impact exposure was quantified using video analysis of this season as well. Sensors were unable to …
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The Etiology of Impact Related Concussion for Catchers and Umpires in Baseball
… utilized to shoot baseballs at the instrumented head of a Hybrid III dummy. Head accelerations were calculated from a 3-2-2-2 accelerometer array to allow for comparisons of linear and angular kinematics. 6 common masks (2-piece traditional-style and 1-piece hockey-style) were tested at 7 …
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Impact Biomechanics of the Head and Neck in Football
… in the thesis explores the biomechanics of the head and neck during impacts in football. The research related to the head is geared towards advancing the current understanding of the mechanisms of mild traumatic brain injury, specifically by investigating head accelerations experienced by …
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Head Acceleration Measurements in Helmet-Helmet Impacts and the Youth Population
… an analysis of acceleration measurements of the head during helmet-helmet impacts, where a player's helmet impacts another player's helmet, and with a youth population in football. This research is aimed at advancing current understanding of impact biomechanics for two specialized groups. The …
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Experimental Measurement of the Utricle's Dynamic Response and the Mechanoelectrical Characterization of a Micron-Sized DIB
… function of these organs is to transduce linear head accelerations and static head tilts into afferent signals that are sent to the central nervous system for the utilization of image fixation, muscle posture control, and the coordination of musculoskeletal movement in dynamic body motion. The …