Sports Sciences Commons^™

Medial Tibial Stress Syndrome, Jacqueline Knowles

Thinking Matters Symposium Archive

The purpose of this project is to examine an exercise-­‐based approach to rehabilitating an athlete with medial tibial stress syndrome. It presents specific exercises that can be used, and focuses on resolving the core of the problem instead of just addressing the symptom. This review attempts to provide a long-­‐term solution rather than providing a quick fix.

The Stroke-Related Effects Of Hip Flexion Fatigue On Over Ground Walking, Megan M. Rybar, Eric R. Walker, Henry Kuhnen, Daniel R. Ouellette, Reivian Berrios, Sandra K. Hunter, Allison S. Hyngstrom

Exercise Science Faculty Research and Publications

Individuals post stroke often rely more on hip flexors for limb advancement during walking due to distal weakness but the effects of muscle fatigue in this group is not known. The purpose of this study was to quantify how stroke affects the influence of hip flexor fatigue on over ground walking kinematics and performance and muscle activation. Ten individuals with chronic stroke and 10 without stroke (controls) participated in the study. Maximal walking speed, walking distance, muscle electromyograms (EMG), and lower extremity joint kinematics were compared before and after dynamic, submaximal fatiguing contractions of the hip flexors (30% maximal load) …

Effectiveness Of Spinal Unloading Positions In Recovering From Spinal Shrinkage Incurred While Running, Jennifer Kumanchik

EWU Masters Thesis Collection

No abstract provided.

The Effect Of Stretching And Strengthening On Patellofemoral Pain Syndrome, Heather Hollinger

Departmental Honors Projects

Although there is considerable research on stretches and strengthening exercises that could help improve function, pain, strength, and flexibility associated with the symptoms of patellofemoral pain, more research on how beneficial stretching and strengthening is compared to just stretching is needed. The purpose of this study was to determine the effectiveness of stretching and strengthening as compared to just stretching alone on flexibility, strength, function, and pain in participants with at least 50% of the symptoms and predispositions associated with patellofemoral pain. The design consisted of a control group that completed basic stretching, while the treatment group received stretching and …

Comparison Of Shod Vs Nonshod On Balance And Postural Sway In Older Adults, Annika Vyakhk

EWU Masters Thesis Collection

Among older adults, falls are the leading cause of death due to injury and hospitalization. With age, cutaneous sensation in the foot sole diminishes, contributing to balance impairment. Discovering an effective method for retraining the mechanoreceptors of the feet will possibly increase balance control. Training the different physiological systems involved in balance maintenance is important for decreasing fall risks. The purpose of this study was to investigate whether a balance training intervention involving barefoot training (BT) yields better static and dynamic balance, and postural sway values than a group wearing shoes (WS). Twelve older adults (65-92 years) were randomly assigned …

Trunk Coordination In Dancers And Non-Dancers, Danielle N. Jarvis, Jo Armour Smith, Kornelia Kulig

Physical Therapy Faculty Articles and Research

Variability, or how a task changes across trials, may reveal differences between athletes of differing skill levels. The purpose of this study was to examine trunk and lower extremity (LE) single joint kinematic variability and inter-segmental coordination variability in dancers and non-dancers during bipedal vertical dance jumps (sautés). Twenty healthy females, ten with no formal dance training and ten professional dancers, performed 20 consecutive sautés. Single joint kinematic variability was assessed using mean standard deviation of angular displacement, and inter-segmental coordination variability was assessed using angular deviation of the coupling angle between segments. Within the context of the standard error …

Tibial Tubercle Transfer To Correct Bilateral Patellar Tendinopathy In A Collegiate Football Player, Andrew D. Hamstra

Boise State University Theses and Dissertations

Objective: To present a case of a competitive football player with chronic patellar tendinopathy and the associated bilateral tibial tubercle transfer surgeries performed leading to the reduction of pain and return to participation.

Background: A 19 year-old male football athlete (height= 187.96 cm, mass= 112.037 kg) presented with chronic patellar tendinopathy that began in his high school career and continued to worsen with the increased physical demands associated with participation in collegiate sport.

Differential Diagnosis: Chondromalacia patella and Osgood Schlatters disease.

Treatment: After nonsurgical intervention resulted in no decrease of pain, bilateral tibial tubercle transfer surgery was conducted to correct …

Fatigue And Recovery From Dynamic Contractions In Men And Women Differ For Arm And Leg Muscles, Jonathon Senefeld, Tejin Yoon, Marie K. Hoeger Bement, Sandra K. Hunter

Exercise Science Faculty Research and Publications

Introduction: Whether there is a gender difference in fatigue and recovery from maximal velocity fatiguing contractions and across muscles is not understood. Methods: Sixteen men and 19 women performed 90 isotonic contractions at maximal voluntary shortening velocity (maximal velocity concentric contractions, MVCC) with the elbow flexor and knee extensor muscles (separate days) at a load equivalent to 20% maximal voluntary isometric contraction (MVIC). Results: Power (from MVCCs) decreased similarly for men and women for both muscles (P > 0.05). Men and women had similar declines in MVIC of elbow flexors, but men had greater reductions in knee extensor MVIC force and …

The Acute Effects Of Upper Extremity Stretching On Throwing Velocity In Untrained Baseball Throwers, Ashley Delobel, Lanisa Harveson, Jason Melton, Michael Williams

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: The purpose of this study was to examine the effects of static and proprioceptive neuromuscular facilitation (PNF) stretching of shoulder internal rotators on throwing velocity as compared to a typical dynamic warm-up.

Subjects: 27 male untrained throwers (mean age = 25.1 years old, SD =2.4) with basic knowledge of throwing mechanics.

Methods:The study was conducted over a series of three sessions with at least one week between each session. During each session, subjects warmed-up, threw 10 pitches, were randomly assigned to one of three separate stretching protocols, and then threw 10 more pitches.The three protocols were static stretching, …

Test-Retest Reliability And Responsiveness Of Gaze Stability And Dynamic Visual Acuity In High School And College Football Players, Denise Kaufman, Mallory Puckett, Mitchell Smith

UNLV Theses, Dissertations, Professional Papers, and Capstones

Objectives: The purpose of this study was to establish reliability and responsiveness of the active dynamic visual acuity test (DVAT) at speeds of 150 to 200 degrees per second (deg/sec) and the gaze stabilization test (GST) in high school and college football players.

Design: Reliability design

Setting, Participants, Main Outcome Measures: A total of 50 high school and college football athletes completed vestibulo-ocular reflex testing using the DVAT and GST in the yaw (horizontal) and pitch (vertical) planes on two separate occasions within 14 days.

Results: Test-retest reliability for the DVAT was good in yaw, Intraclass Correlation Coefficient (ICC) (3,3) …

Examining Lower Extremity Range Of Motion And Movement Variability Chages Due To Focus Of Attention During Landing, Andrew Nordin, Janet Dufek

Interdisciplinary Research Scholarship Day

Attentional focus (AF) has been explored among a variety of motor skills providing evidence that external AF promotes automaticity and enhanced performance [6]. External focus of attention is distinguished from internal focus such that external focus is directed toward movement effect rather than body movements [6]. Movement variability provides a means of assessing functional characteristics of the neuromotor system, where normal functioning is suggested to occur within optimal limits, while excessively high or low movement variability is indicative of system dysfunction [2,4,5]. Additionally, the ability of the motor system to vary, or broadly distribute, internal loads is thought to reduce …

Alterations In Visual Processing And Its Impact On Upright Postural Stability In Athletes Following Sport-Related Concussion, Andrea E. Cripps

Theses and Dissertations--Rehabilitation Sciences

Athletes are at risk of sustaining a concussion in all sports and at all competitive levels which may lead to balance impairments. Balance results from the integration of visual, vestibular, and somatosensory information. The underlying pathophysiology for balance impairments is not well understood and visuo-motor processing impairments and how these impairments contribute to balance in concussed athletes has not been reported. Objectives: (1) to investigate the influence of visual perturbation on upright postural stability and balance in athletes who have recently suffered a sports-related concussion, (2) to establish the test-retest reliability of a simple visuo-motor processing task. Design: A longitudinal, …

Neither Heavy Nor Light Load Resistance Exercise Acutely Exacerbates Lymphedema In Breast Cancer Survivor, Prue Cormie, Daniel A. Galvao, Nigel A. Spry, Robert Newton

Research outputs 2013

Resistance exercise has great potential to aid in the management of breast cancer-related lymphedema (BCRL), but little is known regarding the acute response of performing resistance exercises with the affected limb. Purpose. To examine the acute impact of upper body resistance exercise on the amount of swelling and severity of symptoms in women with BCRL and to compare these effects between resistance exercise involving high and low loads (heavier vs lighter weights). Methods. Seventeen women aged 61 ± 9 years with mild to severe BCRL participated in this study. Participants completed a high load (6-8 repetition maximum) and low load …

Functional Implications Of Impaired Control Of Submaximal Hip Flexion Following Stroke, Allison S. Hyngstrom, Sandra K. Hunter

Exercise Science Faculty Research and Publications

Introduction: We quantified sub-maximal torque regulation during low to moderate intensity isometric hip flexion contractions in individuals with stroke and the associations with leg function. Methods: 10 participants with chronic stroke and 10 controls performed isometric hip flexion contractions at 5%, 10%, 15%, 20%, and 40% of maximal voluntary contraction (MVC) in paretic, non-paretic, and control legs. Results: Participants with stroke had larger torque fluctuations (coefficient of variation, CV), for both the paretic and non-paretic legs, than controls (Pr² =0.45) and Berg Balance Score (r²=0.38). At 5% MVC, there were larger torque fluctuations in the …

Physical Therapy News, Volume 2, Issue 1, College Of Health Professions

Physical Therapy News

No abstract provided.

Near Infrared Spectroscopic Monitoring During Cardiopulmonary Exercise Testing Detects Anaerobic Threshold, Rohit P. Rao, Michael J. Danduran, J. E. Dixon, Rohit S. Loomba, George M. Hoffman

Exercise Science Faculty Research and Publications

Cardiopulmonary exercise testing (CPET) provides assessment of the integrative responses involving the pulmonary, cardiovascular, and skeletal muscle systems. Application of exercise testing remains limited to children who are able to understand and cooperate with the exercise protocol. Near-infrared spectroscopy (NIRS) provides a noninvasive, continuous method to monitor regional tissue oxygenation (rSO2). Our specific aim was to predict anaerobic threshold (AT) during CPET noninvasively using two-site NIRS monitoring. Achievement of a practical noninvasive technology for estimating AT will increase the compatibility of CPET. Patients without structural or acquired heart disease were eligible for inclusion if they were ordered to undergo CPET …

Kinesio Taping On Short-Term Changes In Shoulder Strength In Healthy Adults: A Randomized Clinical Trial, Dario A. Callegari, Cristobal E. Cordova, Julia R. Dunievitz

UNLV Theses, Dissertations, Professional Papers, and Capstones

Study Type: A Randomized Clinical Trial

Introduction:

Kinesio tape is an elastic tape used in various settings and it is purported to assist in strengthening weakened muscles. The mechanism behind this claim is neuromuscular facilitation. The purpose of this study was to determine if the claims of Kinesio tape would be supported in its role in strength enhancing properties.

Methods:

Twenty-nine healthy, untrained male and female college-aged individuals participated in this study. Two baseline measurements assessing shoulder external rotation (ER) strength were collected using isokinetic dynamometry. Subjects were then randomized into two groups, Kinesio tape with ER strengthening (KT-Ex) and …

Foot Volume Change During Long Distance Running In Healthy Adults, Meghan Boni, Istvan Takacs, Rebecca Wilson

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background and purpose: Healthy adults frequently engage in running as a means of cardiovascular exercise. Larger running shoes are often chosen based on common beliefs that feet swell during running, yet many continue to encounter foot injuries, such as blisters, as a result of this activity. Previous research has analyzed the changes in foot volume during short bouts of activity. However, there has been limited research on the effect of long distance running on foot volume, which is where many of these injuries are seen. The purpose of this study was to examine the effects of long distance running, defined …

Duration Of The Effects Of Three Static Stretching Conditions With Or Without A Dynamic Warm-Up In College Age Adults, Spencer Blackwell, Andrew Blomberg, Jonathan Griffith

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose. The purpose of this study was to determine the stretching duration (15, 30, 60 seconds) with or without a dynamic warm-up that resulted in the longest lasting acute effects in hamstring flexibility.

Subjects. Forty subjects (17 male, 23 female) (age: 20-35 years) were selected to participate in this study using a sample of convenience from university graduate students.

Methods. This study contained 7 treatment conditions in which each subject completed in random order. Three groups consisted of a 5-minute treadmill warm-up at a self-selected velocity (SSV) followed by one of three stretching durations (15, 30, or 60 sec). …

Supraspinal Fatigue Impedes Recovery From A Low-Intensity Sustained Contraction In Old Adults, Tejin Yoon, Bonnie Schlinder-Delap, Manda L. Keller, Sandra K. Hunter

Exercise Science Faculty Research and Publications

This study determined the contribution of supraspinal fatigue and contractile properties to the age difference in neuromuscular fatigue during and recovery from a low-intensity sustained contraction. Cortical stimulation was used to evoke measures of voluntary activation and muscle relaxation during and after a contraction sustained at 20% of maximal voluntary contraction (MVC) until task failure with elbow flexor muscles in 14 young adults (20.9 ± 3.6 yr, 7 men) and 14 old adults (71.6 ± 5.4 yr, 7 men). Old adults exhibited a longer time to task failure than the young adults (23.8 ± 9.0 vs. 11.5 ± 3.9 min, …

Service Learning In Higher Education Exercise Science Programs, Wendy Bjerke

All PTHMS Faculty Publications

Introduction: Service learning (SL) describes teaching methods that incorporate student service activities with specific learning objectives. SL has been applied to allied health higher education programs.

Purpose: To determine the applicability of SL to exercise science courses. SL data associated with an undergraduate course in exercise physiology serving a local fire department is examined.

Tibial Acceleration In Male And Female Distance Runners In Reduced Body Weight Conditions, Brendan J. Rickert

PTHMS Graduate Research

Seventy-two percent of all stress fractures in athletes come from running, which can cause an immediate cessation of training. Additionally, fifty percent of all stress fractures occur in the distal end of the tibia. One way to keep the athlete moving without slowing down the healing process is using an unloader treadmill (TM) in a rehabilitation setting. The purpose of this study was to investigate relationship between the level of body weight (BW) unloading in an Anti-Gravity Treadmill and tibial acceleration. Fifteen collegiate cross-country team runners (Gender: 9 males, 6 females; Age: 20.4 ± 2.4 years; Weight 60.1 ± 12.6 …

Pain Relief In Older Adults Following Static Contractions Is Not Task-Dependent, Kathy J. Lemley, Breanna Drewek, Lauren Miller, Sandra K. Hunter, Marie K. Hoeger Bement

Physical Therapy Faculty Research and Publications

Pain complaints increase with age. Exercise is frequently utilized for pain relief but the optimal exercise prescription to relieve pain is not clear. Following static contractions, young adults experience the greatest pain relief with low intensity, long duration contractions. The pain response to static contractions in older adults however is unknown.

PURPOSE : To compare pain reports in healthy older adults before and after static contractions of varying intensity and duration.

METHODS: Pain perception was assessed in 23 healthy older adults (11 men, 12 women; 72.0 ± 6.3 yrs) using a pressure pain device consisting of a 10 N force …

Near Infrared Spectroscopy Describes Physiologic Payback Associated With Excess Postexercise Oxygen Consumption In Healthy Controls And Children With Complex Congenital Heart Disease, Michael J. Danduran, J. E. Dixon, Rohit P. Rao

Exercise Science Faculty Research and Publications

Exercise creates a physiologic burden with recovery from such effort crucial to adaptation. Excess postexercise oxygen consumption (EPOC) refers to the body’s increased metabolic need after work. This investigation was designed to determine the role of near infrared spectroscopy (NIRS) in the description of exercise recovery in healthy controls (NL) and children with congenital heart disease (CHD). Subjects were recruited with exercise testing performed to exhaustion. Exercise time (EXT), heart rate (HR), and oxygen consumption (VO₂) were measured. Four-site NIRS (brain, kidney, deltoid, and vastus lateralis) were measured during exercise and into recovery to establish trends. Fifty individuals …

The Acute Effects Of Various Types Of Stretching (Static, Dynamic, Ballistic, And No Stretch) Of The Iliopsoas On 40-Yard Sprint Times In Non-Athletes, Scott David Christensen, Craig Perry, Ryan Richard Resnik

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to determine the effect of static, ballistic, dynamic, and no stretching immediately prior to a 40-yard sprint in college students. There were 35 healthy subjects (22 male and 13 female) between the ages of 24 and 37 (Mean = 26.46 yrs, SD = 2.99 yrs) who participated. The experiment consisted of running 4, 40-yard sprint trials immediately following 1 of 4 different stretching protocols. Prior to each 40- yard sprint trial, a 5-minute warm up was performed at 3.5 mph on a treadmill. Each subject received each of the four techniques in a randomized …

Incidence And Prevention Of Injury Of The Anterior Cruciate Ligament In Females, Arielle E. Gillie

Senior Honors Theses

According to the American College of Sports Medicine, women are two to eight times more likely to sustain an anterior cruciate ligament injury than men at the same level of performance. This high incidence of women with an ACL injury is thought to be due to a number of gender differences. This study examines the research that has been conducted to determine the reason for the disproportionate incidence of anterior cruciate ligament in female population. The study encompasses anatomical structure of the knee joint, structural differences in the male and female knee, hormonal influences, biomechanical influences, neuromuscular influences, and strategies …

Association Between The Female Athlete Triad And Endothelial Dysfunction In Dancers, Anne Z. Hoch, Paula E. Papanek, Aniko Szabo, Michael E. Widlansky, Jane E. Schimke, David D. Gutterman

Exercise Science Faculty Research and Publications

Objective: To determine the prevalence of the 3 components of the female athlete triad [disordered eating, menstrual dysfunction, low bone mineral density (BMD)] and their relationships with brachial artery flow-mediated dilation in professional dancers.

Design: Prospective study.

Setting: Academic institution in the Midwest.

Participants: Twenty-two professional ballet dancers volunteered for this study.

Interventions: The prevalence of the female athlete triad and its relationship to endothelial dysfunction.

Main Outcome Measures: Subjects completed questionnaires to assess disordered eating and menstrual status/history. They also completed a 3-day food record and wore an accelerometer for 3 days to …

Overcoming Barriers To Implementation Of Evidence-Based Practice Concepts In Athletic Training Education: Perceptions Of Select Educators, Sarah Manspeaker, Bonnie Van Lunen

Rehabilitation Sciences Faculty Publications

Context: The need to include evidence-based practice (EBP) concepts in entry-level athletic training education is evident as the profession transitions toward using evidence to inform clinical decision making.

Objective: To evaluate athletic training educators' experience with implementation of EBP concepts in Commission on Accreditation of Athletic Training Education (CAATE)-accredited entry-level athletic training education programs in reference to educational barriers and strategies for overcoming these barriers.

Design: Qualitative interviews of emergent design with grounded theory.

Setting: Undergraduate CAATE-accredited athletic training education programs.

Patients or Other Participants: Eleven educators (3 men, 8 women). The average number of years teaching was 14.73 ± …

Resilient Observer Design For Discrete-Time Nonlinear Systems With General Criteria, Chung Seop Jeong, Edwin E. Yaz, Yvonne I. Yaz

Exercise Science Faculty Research and Publications

A class of discrete-time nonlinear system and measurement equations having incrementally conic nonlinearities and finite energy disturbances is considered. A linear matrix inequality based resilient observer design approach is presented to guarantee the satisfaction of a variety of performance criteria ranging from simple estimation error boundedness to dissipativity in the presence of bounded perturbations on the gain. Some simulation examples are included to illustrate the proposed design methodology.

The Underrecognized Role Of Impaired Muscle Function In Cancer-Related Fatigue, Alexander V. Ng

Exercise Science Faculty Research and Publications

No abstract provided.