Kinesiology Commons^™

Antagonist Conditioning Contractions Impair Agonist Functioning, Luke Garceau, Aaron Gray, Mckenzie Fauth, Phillip Hanson, Brittni Hsu, Tejin Yoon, Chris Szalkowski, Brittney Lutsch, William Ebben

Exercise Science Faculty Research and Publications

This study assessed the effect of antagonist conditioning contractions (ACC) on the subsequent force and electromyography of an agonist. Twelve subjects performed isokinetic elbow flexion on a dynamometer in 4 test conditions including a baseline condition without, and 1, 3 and 6 seconds after, isometric triceps extension. Average peak torque (T), peak torque/body weight (T:BW), average power (P), and rate of torque development (RTD) were assessed. Electromyographic data were obtained from elbow extensors and flexors. A repeated measures ANOVA with post hoc analysis demonstrated that T, T:BW, P, and RTD were higher in the baseline, compared to the post ACC …

The Effect Of Concurrent Activation Potentiation On The Knee Extensor And Flexor Performance Of Men And Women, Luke Garceau, Erich Petushek, Mckenzie Fauth, William Ebben

Exercise Science Faculty Research and Publications

This study evaluated the effect of remote voluntary contractions (RVC) during isometric and isokinetic knee flexion and extension tests and evaluated gender differences therein. Subject peak torque, rate of torque development, and power were assessed with a dynamometer in RVC and no RVC’s conditions. A two way mixed ANOVA with repeated measures for condition was used to evaluate the interaction between conditions and gender, and to assess the main effects. Main effects were evaluated with a paired samples t-test. Results revealed a significant interaction between all but one test condition and gender as well as significant main effects for all …

Dynamic Stabilization During The Landing Phase Of Plyometric Exercises, Erich Petushek, Luke Garceau, Tyler Vanderzanden, Brad Wurm, Christina Feldmann, William Ebben

Exercise Science Faculty Research and Publications

This study examined the differences in and the reliability of time to stabilization (TTS) of several plyometric exercises. Twenty six men performed a variety of plyometric exercises representing a continuum of intensities of landing instability, including line hops, cone hops, squat jumps, tuck jumps, countermovement jumps, dumbbell countermovement jumps, and single leg countermovement jumps on a force platform. A repeated measures ANOVA with Bonferroni post hoc corrections was used to evaluate the differences in TTS between plyometric exercises. Practitioners who use plyometrics to train dynamic stability and balance should create programs that progress the intensity of the exercises based on …

The Effect Of Concurrent Activation Potentiation During Fast Stretch Shortening Cycle Activity, Erich Petushek, Luke Garceau, William Ebben

Exercise Science Faculty Research and Publications

This study evaluated the effect of remote voluntary contractions (RVC) on depth jump performance. Subjects performed the depth jump in a RVC condition and a condition without RVC (NO-RVC). Ground reaction force (GRF), impulse (I), and reactive strength index (RSI) were assessed with a force platform. Data were analyzed using a two way ANOVA. Analysis of GRF showed no significant main effects for RVC condition (p = 0.46) and no interaction for RVC condition and gender (p = 0.11). Analysis of I showed no significant main effects for RVC condition (p = 0.99) and no interaction for RVC condition and …

What Motivates Young Latina Females Along The U.S. Mexico Border Region To Participate In Team Sports?, Dora A. Pichardo

Open Access Theses & Dissertations

Physical activity gives women and girls an overall better quantity of life and positive health benefits. Statistics indicate lack of participation in physical activity and exercise by the U.S. general population and among the Latino population in particular. The primary purpose of this study is to explore the variables that motivate young Latinas to play and eventually continue to stay involved in team sports. This is a survey correlational study including young Latina females a U.S.-Mexico border community. Statistical analysis included frequencies, means, and Pearson Product Momentum Correlations. Sixty-nine participants (12 to 15 years old) completed the survey. The response …

The Role Of The Subtalar Joint And The Influence Of Footwear Characteristics During Slip Perturbations, Jessica M.R. Berrigan

Theses and Dissertations (Comprehensive)

Slips are considered one of the most common causes of major accidental injuries. The objective of this thesis is two-fold. The first objective is to determine the role of the subtalar joint during a slipping perturbation. The second is to determine if certain footwear characteristics, that may restrict the normal function of the subtalar joint (i.e., insole stiffness and heel counter stiffness), will change the response to unexpected heel contact slipping perturbations.

Forty-two participants (30 females, 12 males) were recruited from a university aged population (21.19 years ± 2.7 years). Trials were performed over a 10 m walkway with rectangular …

Dynamic Acromiohumeral Interval Changes During Scapular Plane Arm Motions, Melissa Deen Thompson

LSU Doctoral Dissertations

This purpose of this dissertation is to explore changes in the acromiohumeral interval during dynamic motion in the scapular plane. All of the experiments were completed in the Football Operations Athletic Training Room at Louisiana State University. The first experiment which investigated dynamic acromiohumeral interval changes in baseball players during a loaded and unloaded scaption exercise from 0°-75°, has been accepted for publication by the Journal of Shoulder and Elbow Surgery (in press, 2010). The mean acromiohumeral interval (AHI) for unloaded and loaded scaption decreased significantly (p<.001) from the arm at the side until 45° and loaded scaption narrowed AHI at 60° (p=.005) and 75° (p=.003). The second experiment investigates AHI and scapular upward rotation (SUR) changes in baseball and softball players during scaption exercises from 0°-75°. Significant load related narrowing of the AHI at 45°(p=.005), 60°(p=.001), and 75°(p<.001) and a significant load-position interaction (p=.001) at 0° and 75°was observed for all subjects. No gender differences in SUR or AHI were found. AHI and SUR displayed moderate positive correlations at 30° for both the unloaded scaption (r=.648, p=.001) and the loaded scaption (r=.445, p=.038) however, no significant relationships were present at 0°, 45°, 60° or 75°. The third experiment compared dynamic acromiohumeral interval and scapulohumeral rhythm changes in trained and untrained females during scaption exercises from 0°-90°. In general, AHI was maximal with the arm at the side and declined significantly (p<.001) during arm elevation until 60°, but increased significantly (p<.001) between 60° and 90°. Significant load related narrowing of the AHI at all positions (p<.05), a more negative SUR at 0° (p<.001) and a more positive SUR at 90° (p=.009) was observed for all subjects. Female athletes had significantly stronger external rotators (p<.001), larger overall AHI (p=.003) and more SUR (p=.008) than untrained females. Significant positive correlations (p<.05) between AHI and SUR were observed at 0°, 30°, and 60° during both loaded and unloaded scaption.

Target Eccentricity Effects For Defensive Responses, Taegyong Kwon

LSU Doctoral Dissertations

Defensive actions involving goal-directed responses to visual stimuli presented in different parts of the viewing field commonly include movements either toward (TOWARD) or away from (AWAY) the actual stimulus. One can categorize the type of defensive movements by outcome or the level of stimulus-response (S-R) compatibility, where a congruent response corresponds to a response in the TOWARD condition and an incongruent response corresponds to a response in the AWAY condition. In an effort to better understand defensive responses, which have received less attention in the literature than offensive movements regardless of their importance in combative situations, we studied the responses …

Exercise-Induced Alterations In Melanocortin Receptor Expression And Inflammation, Tara Michelle Henagan

LSU Doctoral Dissertations

Inflammatory cytokines play a significant role in the pathogenesis of obesity-related diseases and have been implicated as integral factors in both early and late phases of atherosclerosis. Lifestyle modifications such as increasing physical activity and making dietary changes to induce weight loss are part of the primary prescription for the treatment of metabolic syndrome. Additionally, physical activity has been implicated as a potentially effective regimen for the control of inflammation, yet little is known about the anti-inflammatory mechanistic alterations induced by physical activity.

Exercise training causes acute changes in inflammation immediately post exercise, evidenced by upregulation of inflammatory cytokines and …

An Injury Survey And Biomechanical Analysis Of Strength And Conditioning Exercises And Maximal Hiking Test (Hm180) In Junior Sailors, Wee Wing Kuen

Theses : Honours

In Olympic sailing, the "hiking" position is adopted by sailors to counteract forces of the wind acting on the sail and. improve boat speed. Hiking is widely regarded as the main physical challenge faced by single-handed dinghy sailors and senior dinghy sailors are known to have high rates of low back and knee injury. However, the extent of these injuries in junior sailors is yet to be reported. Although strength and conditioning exercises have been prescribed to enhance performance and prevent injury in sailors, little is known about these exercises in comparison to the demands placed on the sailor's musculature …

The Effect Of Lower Body Warm Water Immersion And Submaximal Exercise On Hamstring Extensibility, Annica Ava-Gaye Morrison

Dissertations and Theses @ UNI

Context: A comparison of single and dual heating on acute gains in hamstring extensibility. Objective: To determine if active warm-up in conjunction with warm water immersion will have a greater effect on hamstring extensibility than active warm-up on land. Design: Crossover Setting: Research laboratory. Participants: Eighteen physically active males (20.4± 1.8 yrs, ht= 196. 2± 7.1cm, mass= 90.5 ± 22.5kg) experiencing limited hamstring extensibility and no low back or leg injury within 6 months prior to collection, or heat related illnesses that required medical attention. IRB approval was given. Intervention: During three sessions participants were measured before and after one …

Equal Bmd After Daily Or Triweekly Exercise In Growing Rats, B. D. Kayser, J. K. Godfrey, R. M. Cunningham, R. A. Pierce, S. V. Jaque, Ken D. Sumida

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The purpose of this study was to examine the efficacy of continuous resistance training (3 days/wk) compared to interrupted resistance training where 20-24 h separated an exercise bout (i.e. 6 days/wk) for enhancing bone mineral density (BMD) in growing male rats. The total volume of work performed per week between the two resistance training programs was equivalent by design. Young male rats were randomly divided into Control (Con, n = 9), 3 days/wk resistance trained group (RT3, n = 9), and 6 days/wk resistance trained group (RT6, n = 9). The RT3 and RT6 groups were conditioned to climb a …

Different Training Volumes Yield Equivalent Increases In Bmd, R. A. Pierce, L. C. Lee, C. P. Ahles, S. M. Shdo, S. V. Jaque, Ken D. Sumida

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The purpose of this study was to determine if an exercise threshold existed in stimulating an elevation in bone mineral density (BMD), via resistance training, during the growth period in male rats. 27 male rats were randomly divided into Control (Con, n = 9), 3 ladder climb resistance trained group (3LC, n = 9), and 6 ladder climb resistance trained group (6LC, n = 9). The 3LC and 6LC groups were conditioned to climb a vertical ladder with weights appended to their tail 3 days/wk for a total of 6 wks, but the 6LC group performed significantly more work than …

How Does Background And Training Affect Dance Pedagogy In Higher Education?, Meredith Erin Sims

University of Kentucky Master's Theses

Dance faculty in higher education have various backgrounds and training ranging from professional dance careers to doctoral degrees in dance. This study sought to examine the ways background and training impact faculty members‟ pedagogical approach to a dance technique class in a higher education dance department. This study examined the pedagogical knowledge, content knowledge, and pedagogical content knowledge of participants through qualitative methods including interviews, observations, and document analysis. Six major themes emerged from the data: desire to teach, teaching focus, challenging students, planning and preparation, instructional methods, and assessment strategies.

Effects Of Training On Physical Performance Wearing Personal Protective Equipment, David P. Swain, James A. Onate, Stacie I. Ringleb, Dayanand N. Naik, Marlene Demaio

Human Movement Studies & Special Education Faculty Publications

We evaluated the effects of wearing a weighted vest during 6 weeks of military-style training. Forty-three subjects were randomly assigned to a control group or a vest group (carrying 4-5 kg for 2 weeks, and 8-10 kg for 4 weeks), with 37 completing the study (17 vest, 20 control). Both groups performed stair climbing in addition to standard Marine Corps training for 1 hour, four times per week. Pre- and post-tests were performed while wearing military personal protective equipment, with the exception of the Marine Physical Readiness Test (PRT). Both groups significantly improved PRT scores (8.4% 3-mile run, 28-38% calisthenics) …