Medicine and Health Sciences Commons^™

The Relationship Between Core Stability Related Measures And Performance In Adolescent All-Star Cheerleaders, Rachel S. Leitz

Electronic Theses and Dissertations

Purpose: To determine if a relationship exists between core stability related measures (CSRM) and total cheer performance (TCP); including tumbling, jumping, and stunting. Secondly, to determine if TCP can be predicted by these CSRM.

Methods: Fifty female competitive cheerleading bases aged 10-18 from various all-star cheer programs in the southeastern region of the United States were included. Participants filled out a current health status questionnaire prior to participation. The CSRM included the timed sit-up test, trunk extensor endurance test, trunk flexion to extension range of motion, dominant limb single leg stance test, and normalized to height dominant limb single leg …

The Effects Of Subconcussive Impacts On Postural Stability, Eric Shiflett

Electronic Theses and Dissertations

Context: The effects of concussions on postural stability, both acutely and chronically, have been well studied and noted. However, whether subconcussive impacts lead to these same impairments is not heavily investigated. Objectives: The primary purpose of this study was to examine the effects of subconcussive impacts on postural stability in NCAA Division I football athletes. We hypothesized that all participants would show declines in postural stability following a single fall season. We also hypothesized that there would be no significant differences between groups from pre- to post-season measures. The secondary purpose was to predict deficits in postural stability based on …

Utilization Of B-Mode Ultrasound As A Body Fat Estimate In Collegiate Football Players, Parker Hyde

Electronic Theses and Dissertations

The purpose of the present study was to validate a 7-site ultrasound imaging protocol to predict percent body fat (%BF) in a Division I football team. Body composition was estimated by ultrasound, seven site skinfolds (SKINFOLD), and the three compartment-water (3C-W) model of Siri (1961), using Bioimpedance spectroscopy (BIS) to estimate total body water (TBW) and air-displacement plethysmography (BODPOD^®) to determine body density (Db). Pearson’s product-moment correlation analyses were run to determine between Σ_Ultrasound and the criterion 3C-W, and between the Σ_Skinfold and Σ_Ultrasound. Strong positive correlations were observed between Σ_Skinfold and Σ …

Evaluation Of Linear And Nonlinear Postural Stability Measurements Following Concussion, Kelsey Evans

Electronic Theses and Dissertations

Sport related concussions affect nearly 1.6 to 3.8 million athletes annually in the United States. A large number of these athletes suffer from postural instability following concussion. Postural control assessment has become a recommended tool to determine readiness to return to play. Measurement of postural control through the use of center of pressure (CoP) variables may provide a sensitive evaluation following concussion and throughout recovery. Purpose: To evaluate a unipedal and bipedal quiet stance protocol consisting of linear and nonlinear CoP measurements with varying durations in a concussed population throughout recovery. Methods: Thirteen NCAA Division I Collegiate Football players (age: …