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Full-Text Articles in Life Sciences
The Correlation Between Ankle Proprioception And Lower Extremity Muscle Reactions In Response To Simulated Lateral Ankle Sprains, Erin M. Carroll
The Correlation Between Ankle Proprioception And Lower Extremity Muscle Reactions In Response To Simulated Lateral Ankle Sprains, Erin M. Carroll
Theses and Dissertations
Context: Lateral ankle sprains are one of the most commonly occurring sport-related injuries. The somatosensory system is primarily responsible for monitoring the position of the joints in space during movement. This system functions by way of neurological structures that provide proprioceptive and neuromuscular input to the brain. Motor control of the lower extremity relies on proprioceptive input to the central nervous system (CNS) and local neuromuscular control of each joint to produce coordinated, global muscular responses to external events. Previous research has investigated links between proprioception and neuromuscular control in relationship to ankle inversion separately, but none have searched for …
Biomechanical Assessment Of The Lower Extremity Following An Unexpected Ankle Perturbation, Emilia Gladys Schempp
Biomechanical Assessment Of The Lower Extremity Following An Unexpected Ankle Perturbation, Emilia Gladys Schempp
Theses and Dissertations
A deeper understanding of the response to an unexpected ankle perturbation could help provide insight into ankle sprain injury avoidance strategies. This study compared lower extremity electromyographic and kinematic measures between unexpected ankle perturbation and normal walking conditions, including muscle amplitudes and reaction times, dominant limb joint angles and velocities. Trial conditions included a walking control condition, unexpected 30° inversion, and unexpected 18° combined inversion and plantarflexion. With randomized trials, 20 healthy volunteers walked along the custom-built walkway that unexpectedly released into the described ankle perturbations. Significant differences were found for peak and average EMG of the peroneus longus and …
The Effect Of Load On The Kinetics And Kinematics Of The Lower Extremity During Landing, Michael Akira Sullivan
The Effect Of Load On The Kinetics And Kinematics Of The Lower Extremity During Landing, Michael Akira Sullivan
Theses and Dissertations
Purpose: To understand the differences in the lower extremity kinetics and kinematics as load increases during jump landings. Methods: Ten male participants (20.4 years ± 2.41 years, 108.8kg ± 14.02kg) took part in two testing sessions. The first testing session involved testing each participant’s 1-repetition max in the hexagonal barbell deadlift. The second testing session involved the data collection of the jumping trials for each participant. Participants performed their countermovement jumps under seven randomized conditions. Six of the conditions involved the hex bar using loads equivalent to 10, 20, 30, 40, 50, and 60% estimated 1-repetition max of the hexagonal …
Modeling Individual Muscle Forces In The Lower Extremity During Loaded And Unloaded Hexbar Vertical Jumps, Abigail Salvadore
Modeling Individual Muscle Forces In The Lower Extremity During Loaded And Unloaded Hexbar Vertical Jumps, Abigail Salvadore
Theses and Dissertations
Hexagonal barbell (HB) loaded jumps are often used in training to increase lower extremity power. Given the importance of coordinated muscular effort in achieving maximal power output, an understanding of how the lower extremity musculature individually performs during loaded jumps would be advantageous. The purpose of this study is to describe the effect of load on individual muscle forces, muscle torques, and the contribution to the net joint moment (NJM) during the concentric phase of loaded HB jumps.10 male collegiate athletes performed 5 maximal HB jumps at 0%, 20%, 40% and 60% of their HB deadlift 1-repetition maximum. Filtered Ground …