Exercise Science Commons^™

Reliability Of Gastrocnemius Pennation Angle Using Ultrasound With 15 Degree Adduction And Abduction In Standing Position, Diana J. Tyler

Honors College Theses

A pennate muscle has fascicles that attach obliquely to its tendon. In parallel, more fascicles can be aligned allowing for greater production of force. In previous research, pennation angle has been measured using ultrasound while in a laying supine position. The purpose of this study was to measure pennation angle of the gastrocnemius muscle with ultrasound while standing neutral, in a mechanically loaded position. 16 participants, one two separate days, had their ultrasound imaging taken in three different foot orientations: neutral, fifteen degree adduction / abduction positions. This information was then be analyzed using ImageJ software. This research shows the …

Assessment Of Anti-Saccades Within 24 To 48 Hours Post-Concussion, Nathan D'Amico

GS4 Georgia Southern Student Scholars Symposium

INTRODUCTION: Approximately 90% of concussions involve oculomotor impairment, with saccadic eye movement deficits being the most prominent oculomotor impairment. Saccades are rapid eye movements that bring a fixed point or area of interest into the center of sight and are important for safely navigating through the environment. Anti-saccades are saccadic eye movement deficits that involve a reflexive, involuntary saccade away from a fixed point or area of interest. Assessments of anti-saccades may provide a fast, accurate, and reliable way to screen for concussion. However, little research quantitatively explores anti-saccades post-concussion.

PURPOSE: To investigate anti-saccades between NCAA Division I athletes 24-48 …