Sports Sciences Commons^™

Oral Contraceptives As Possible Acl Injury Prevention Method, Haley Schweizer

Capstone Showcase

ABSTRACT

Introduction: Anterior Cruciate Ligament (ACL) injuries are an upsetting setback for many athletes that require a long and costly recovery process. The injury rates are four times greater in women than men. Preventative measures that help to prevent ACL injuries are limited to stretching and strengthening. Therefore, this review aims to investigate if oral contraceptive [I] usage provides a possible new avenue for prevention of ACL injury [O] in young female athletes (ages 18-30) [P] compared to those that do not take oral contraceptives [C].

Methods: A literature review was performed though PubMed, Google Scholar, SCOPUS Database, and ClinicalKey …

Effects Of A Strength Training Intervention And Quality Of Life: Case Study On A Sedentary Adult Female, Lucas Frazier

Williams Honors College, Honors Research Projects

The purpose of the project is to evaluate physiological and quality of life changes in a

sedentary, senior-aged (55 or older) female using a six-week strength training

intervention. This case study will instruct how to perform a push-pull-legs split

routine by going to the gym three times per week. Prior to the six week intervention,

both quantitative and qualitative variables will be collected to assess baseline data,

including the subject’s resting heart rate, resting blood pressure, grip strength, one-

repetition maximum on seven whole body exercises (dumbbell bicep curl, tricep

pushdown, barbell bench press, wide-grip lat pull-down, seated dumbbell press, …

Athletic Training And Physical Therapy Junior Faculty Member Preparation: Perceptions Of Doctoral Programs And Clinical Practice, Jessica L. Barrett, Stephanie M. Singe, Aynsley Diamond

Internet Journal of Allied Health Sciences and Practice

Background: Institutions of higher education suffer from a shortage of appropriately prepared faculty members in athletic training and physical therapy programs. Both professional programs have recently undergone curricular reform and degree change. We sought gain an understanding of the preparation mechanisms experienced by athletic training and physical therapy practitioners for their junior faculty positions. Method: Twenty-six athletic trainers and physical therapists participated in this phenomenological study. Data from one-on-one phone interviews were analyzed following the inductive process of interpretive phenomenological analysis. Content experts, pilot interviews, multiple analysts and member checking ensured trustworthiness. Results: Findings indicate two primary mechanisms prepared the …

Plyometric Training For Young Male Field Hockey Players, Vijaya Krishnan, Twincy Rajawadha

Internet Journal of Allied Health Sciences and Practice

Background: Field hockey is a team sport requiring a combination of skill set to enhance a player’s performance. Power, Fitness and Agility are few such basic parameters. Newer training protocols are constantly explored to achieve the desired effect and plyometrics is one such method. It is also important to know how long lasting the effects of training are. Methodology: Fifty (50) male field hockey players at interschool and zonal level participated in the study. These sports specific parameters - lower limb power, fitness level and agility - were tested using the vertical jump test, 40-metre sprint test, and shuttle cross …

Training Postural Control With Eyes Closed Vs. Eyes Open And Effects On Postural Control Improvement, Mark D. Ulbricht

Cal Poly Humboldt theses and projects

Introduction: Ankle sprains are one of the more common injuries in an athletic population. Postural control training can be used in prevention and rehabilitation for ankle sprains. When used preventively postural control training can decrease the risk of sustaining an ankle sprain by 38% (McGuine & Keene, 2006). There are a variety of postural control training programs all emphasizing different aspects of postural control, such as eyes closed, or eyes open situations. Training protocols with either eyes closed or eyes open have been shown to improve both static and dynamic postural control (Zech et al., 2010). The purpose of this …

Feasibility And Acceptability Of A Self-Report Activity Diary In Families Of Children With And Without Special Needs, Bethany Forseth, Paula E. Papanek, Linda Bandini, Dale A. Schoeller, Andrea Moosreiner, Kathleen J. Sawing, Kimberley Zvara, Michael Fendrich, Michele Polfuss

Exercise Science Faculty Research and Publications

This study was conducted to examine the feasibility and acceptability of a self-report activity diary completed by parents and older children to assess the child's daily activity in children with and without special needs. The study included 36 child/parent dyads stratified by child age and diagnosis. Parents (n = 36) and children ≥13 years (n = 12) were asked to report on the child's daily activity using an activity diary. Feasibility was determined based on successfully returned diaries and acceptability via post-study interview. Activity diaries were submitted by 94% of the parents and 100% of the children, with 83% and …

Sex Differences In Fatigability And Recovery Relative To The Intensity–Duration Relationship, Paul Ansdell, Paul Ansdell, Callum G. Brownstein, Jakob Škarabot, Kristy M. Hicks, Glyn Howatson, Kevin Thomas, Sandra K. Hunter, Stuart Goodall

Exercise Science Faculty Research and Publications

Females are less fatigable than males during isometric exercise at intensities relative to maximal voluntary contraction (MVC); however, whether a sex difference in fatigability exists when exercise is prescribed relative to a critical intensity is unknown. This study established the intensity–duration relationship, and compared fatigability and recovery between sexes following intermittent isometric contractions normalised to critical intensity. Twenty participants (10 females) completed four intermittent isometric knee extension trials to task failure to determine critical intensity and the curvature constant (W′), followed by fatiguing tasks at +10% and −10% relative to critical intensity. Neuromuscular assessments were completed at baseline …

Calculating Set-Volume For The Limb Muscles With The Performance Of Multi-Joint Exercises: Implications For Resistance Training Prescription, Brad J. Schoenfeld, Jozo Grgic, Cody Haun, Takahiro Itagaki, Eric R. Helms

Publications and Research

Resistance training volume, determined by the number of sets performed (set-volume) is considered one of the key variables in promoting muscle hypertrophy. To better guide resistance exercise prescription for weekly per-muscle training volume, the purpose of this paper is to provide evidence-based considerations for set-volume ratios between multi-joint (MJ) and single-joint (SJ) exercises so that practitioners can better manage prescription of training volume in program design. We analyzed this topic from three primary areas of focus: (1) biomechanical and physiological factors; (2) acute research; and (3) longitudinal research. From a biomechanical and physiological standpoint, when considering force production of different …

Differential Effects Of Aging And Physical Activity On Corticospinal Excitability Of Upper And Lower Limb Muscles, Vianney Rozand, Jonathon William Senefeld, Christopher W. Sundberg, Ashleigh E. Smith, Sandra K. Hunter

Exercise Science Faculty Research and Publications

Corticospinal tract excitability can be altered by age, physical activity (PA), and possibly sex, but whether these effects differ between upper and lower limb muscles is unknown. We determined the influence of age, PA, and sex on corticospinal excitability of an upper limb and a lower limb muscle during submaximal contractions by comparing stimulus-response curves of motor evoked potentials (MEPs). Transcranial magnetic stimulation (TMS) was used to evoke stimulus-response curves in active muscles by incrementally increasing the stimulator intensity from below the active motor threshold (AMT) until a plateau in MEP amplitudes was achieved. Stimulus-response curves were analyzed from the …

The Effect Of Functional Movement Control On Patient-Reported Outcomes In Individuals With Non-Arthritic Hip Pain, Ryan Mcgovern

Electronic Theses and Dissertations

Purpose: Both the single leg squat test and step-down test assess for deficiencies relating to the hip and surrounding musculoskeletal structures and could be useful in the evaluation of functional movement control for individuals with non-arthritic hip pain. The purpose of this study is to determine if individuals with non-arthritic hip pain that improve functional movement control during the single leg squat test and step-down test have better patient-reported outcomes than those that do not improve, following the implementation of a rehabilitation intervention and a standardized home-exercise program.

Subjects: Forty-six individuals (31 females; 15 males) with a mean age of …

Innovative Care Of Individuals In The Athletic Training Room: A Case Series, Kathryn E. Young

Senior Honors Projects, 2010-2019

This work follows three unique cases of athletic injuries and/or injuries in patients. These cases were selected because of the innovative nature of the rehabilitation process conducted by the sports medicine team via the athletic training room or the unique nature of the injury/case.

The first is a concussion sustained from a motor vehicle accident in a collegiate female thrower. This is unique because it’s a non-sport related concussion handled as an athletic trainer would handle a sports related concussion. It also demonstrates a new unique protocol for concussion management.

The second case is a patient with two complete anterior …

Analysis Of Injuries And Costs Of Public Safety Occupations: A Systematic Review, Jade Witmer

Graduate Theses

Public safety occupations, such as firefighters and law enforcement, perform physically demanding tasks in unpredictable environments with additional external loads putting them at risk for sustaining a musculoskeletal injury while on duty. The goal of this systematic review was to address the incidence of musculoskeletal injuries and costs related to those in the public safety occupations of firefighting and law enforcement.

The Relationship Between Blood Flow And Motor Unit Firing Rates In Response To Fatiguing Exercise Post-Stroke, Spencer Murphy, Matthew J. Durand, Francesco Negro, Dario Farina, Sandra K. Hunter, Brian D. Schmit, David D. Gutterman, Allison S. Hyngstrom

Exercise Science Faculty Research and Publications

We quantified the relationship between the change in post-contraction blood flow with motor unit firing rates and metrics of fatigue during intermittent, sub-maximal fatiguing contractions of the knee extensor muscles after stroke. Ten chronic stroke survivors (>1-year post-stroke) and nine controls participated. Throughout fatiguing contractions, the discharge timings of individual motor units were identified by decomposition of high-density surface EMG signals. After five consecutive contractions, a blood flow measurement through the femoral artery was obtained using an ultrasound machine and probe designed for vascular measurements. There was a greater increase of motor unit firing rates from the beginning of …

A Visual Exploration Of Walking In Mild Traumatic Brain Injury (Mtbi), Bryana Popa

OHSU-PSU School of Public Health Annual Conference

Visual exploration of the environment is vital for safe and effective walking, and is influenced by cognitive load. Eye movement deficits can occur following mTBI and may impact visual exploration when walking, leading to issues with mobility. This study aims to examine visual exploration when walking under single and dual-task in mTBI and controls.

Sixteen people with mTBI (Age: 30.1±12.8 yrs, days since injury: 39.5±21.7) and 10 healthy controls (Age: 26.3±5.2 yrs) walked for 1 minute while wearing a mobile eye tracker under single and dual-task conditions. The primary outcome was visual exploration measured by saccade frequency (sacc/sec). Secondary outcomes …

Can Preseason Performance Tests Discriminate Injury Risk In Female Collegiate Volleyball Players, Justine Benner, Heidi Cooke, Colby Critchfield, Samantha Dunn, Sarah Eddy, Linda Froemming

Student-Faculty Research - College of Physical Therapy

Purpose: Prior research has demonstrated a 4-fold greater risk of a non-contact time-loss lower quadrant injury in collegiate female VB players (3). The purpose of this study was to validate effectiveness of functional performance tests to discriminate injury risk in female collegiate volleyball players.

Oscillations In Neural Drive And Age-Related Reductions In Force Steadiness With A Cognitive Challenge, Hugo M. Pereira, Bonnie A. Schlinder-Delap Mrs., Kevin G. Keenan, Francesco Negro, Dario Farina, Allison S. Hyngstrom, Kristy A. Nielson, Sandra K. Hunter

Exercise Science Faculty Research and Publications

A cognitive challenge when imposed during a low-force isometric contraction will exacerbate sex- and age-related decreases in force steadiness, but the mechanism is not known. We determined the role of oscillations in the common synaptic input to motor units on force steadiness during a muscle contraction with a concurrent cognitive challenge. Forty-nine young adults (19–30 yr; 25 women, 24 men) and 36 old adults (60–85 yr; 19 women, 17 men) performed a cognitive challenge (counting backward by 13) during an isometric elbow flexion task at 5% of maximal voluntary contraction. Single-motor units were decomposed from high-density surface EMG recordings. For …

Left Achilles Tendon Rupture In A Male Collegiate Soccer Player, Benjamin Welch

UNO Student Research and Creative Activity Fair

ABSTRACT

Objective: To present the case of an Achilles tendon rupture including surgical repair and rehabilitation in a National Collegiate Athletic Association Division I, male, soccer athlete.

Background: While attempting to perform a backflip following a match victory, the athlete jumped up and experienced a gunshot sound and feeling on his posterior, distal, left leg. On-field evaluation included a positive Thompson Test for Achilles tendon (AT) rupture. Post injury imaging revealed a coinciding diagnosis.

Differential Diagnosis: AT strain, calcaneal fracture, fibula fracture, Shepard’s fracture

Treatment: Open surgery technique to repair the tear followed by rehabilitation protocol beginning with rest and …

Patellar Tendonopathy In Collegiate Volleyball Athletes, Justine Benner, Heidi Cooke, Colby Critchfield, Samantha Dunn, Sarah Eddy, Linda Foremming

Student-Faculty Research - College of Physical Therapy

Purpose: The first purpose was to identify the prevalence of patellar tendon abnormality in female collegiate volleyball players. The second purpose was to identify a potential association between kinetic measures during the drop vertical jump between those with tendon abnormality and those without in female collegiate volleyball athletes

Volleyball Overhead Swing Volume And Injury Frequency Over The Course Of A Season, Heather Wolfe, Katherine Poole, Alejandro G. Villasante Tezanos, Robert A. English, Timothy L. Uhl

Statistics Faculty Publications

Background: Overuse injuries are common in volleyball; however, few studies exist that quantify the workload of a volleyball athlete in a season. The relationship between workload and shoulder injury has not been extensively studied in women's collegiate volleyball athletes.

Hypothesis/Purpose: This study aims to quantify shoulder workloads by counting overhead swings during practice and matches. The purpose of the current study is to provide a complete depiction of typical overhead swings, serves, and hits, which occur in both practices and matches. The primary hypothesis was that significantly more swings will occur in practices compared to matches. The secondary hypothesis was …

The Relationship Between Pitching Volume And Arm Soreness In Collegiate Baseball Pitchers, Angel L. Lazu, Shawn D. Love, Timothy A. Butterfield, Robert A. English, Timothy L. Uhl

Physical Therapy Faculty Publications

Background: Excessive baseball pitch volume has been associated with increased risk of injury in adolescents. However, many collegiate athletes report non-time loss injuries over the course of the season. It is unknown how pitch volume throughout a collegiate baseball season affects arm soreness.

Purpose: The primary purpose of this study was to determine the relationship between pitch volume and self-reported arm soreness. A secondary purpose was to determine the relationship between change in pitch volume and change in arm soreness over the course of the season for collegiate baseball pitchers.

Study Design: Prospective Cohort.

Methods: Seven collegiate baseball …

Ballroom Dance For Persons With Multiple Sclerosis: A Pilot Feasibility Study, Alexander V. Ng, Sheri Bunyan, Jimin Suh, Pamela Huenink, Tyler Gregory, Shannon Gambon, Deborah Miller

Exercise Science Faculty Research and Publications

Purpose: The purpose of this study was to evaluate the exercise intensity and feasibility of recreational ballroom dance for persons with multiple sclerosis (MS).

Methods: Seven persons with MS participated in 2 one-hour dance sessions per week for 6 weeks. Dance types included rumba, foxtrot, waltz, and push-pull. Six other persons with MS comprised a control group that did not dance. Heart rate and ratings of perceived exertion (RPE) were monitored during the sessions. Outcomes included: quality of life, fatigue, depression, self-efficacy, timed up and go, Berg Balance Scale, Dynamic Gait Index and the Multiple Sclerosis Functional Composite comprising 9-hole …

Connecting The Pieces: How Low Back Pain Alters Lower Extremity Biomechanics And Shock Attenuation In Active Individuals, Alexa Johnson

Theses and Dissertations--Rehabilitation Sciences

Low back pain in collegiate athletes has been reported at a rate of 37% from a wide array of sports including soccer, volleyball, football, swimming, and baseball. Whereas, in a military population the prevalence of low back pain is 70% higher than the general population. Compensatory movement strategies are often used as an attempt to reduce pain. Though compensatory movement strategies may effectively reduce pain, they are often associated with altered lower extremity loading patterns. Those who suffer from chronic low back pain tend to walk and run slower and with less trunk and pelvis coordination and variability. Individuals with …

Åstrand-Rhyming And Ymca: A Compare And Contrast Literature Review Of Two Submaximal Cycle Ergometer Tests, Sean Roberts

Williams Honors College, Honors Research Projects

In the world of exercise prescription there are two major protocols that are used to test an individual’s aerobic capacity at a submaximal intensity using a stationary bicycle. These protocols require participants to exercise at a constant work rate until a specified hear rate is reached. Data can then be analyzed to determine the participant’s aerobic capacity. The objective of this literature review is to look at these two tests – the Åstrand-Rhyming cycle ergometer test (ARCET) and the YMCA cycle ergometer test – and determine if one is better than the other for different populations and which one an …

The Effects Of Saddle Alignment And Pedal Stroke Training On A Competitive Cyclist With Anterior Knee Pain: A Case Report, Tim Evens, Jerome Danoff

Internet Journal of Allied Health Sciences and Practice

Background: Among competitive cyclists, anterior knee pain is a common overuse injury. Alignment of the rider on the bicycle and the loading pattern on the pedals are proposed as factors in this pain. The patient was a 23-year-old competitive female cyclist who was riding up to 200 miles weekly and had developed bilateral anterior knee pain within the 3 months preceding our examination. The purpose of this case report is to demonstrate the effectiveness of adjusting this patient’s static alignment (ie. position while seated on bicycle, but not actively pedaling) on the bike and modifying her habitual pedaling pattern. Methods …

The Relationship Between Training Load And Injury Or Illness Symptoms Using An Acute And Chronic Workload Ratio In Collegiate Cross-Country Runners, Brennan T. Mickelson

Graduate Student Theses, Dissertations, & Professional Papers

Abstract

Objectives: Examining the relationship between workloads (miles ran) of collegiate cross-country (XC) athletes (n=18) and symptoms of injury or illness over the course of 10 weeks. This can assist sport coaches, athletic performance coaches, and athletic trainers in keeping athletes healthy and furthering adaptation throughout the course of the season, thus improving the team’s overall success during the season.

Purpose: The purpose of this study was to show a relationship between an Acute and chronic workload ratio (ACWR) in miles run and weight lifted, ACWR in miles run grouped by z-scores, weight, age, years of collegiate XC experience, miles …

A Substruction Approach To Assessing The Theoretical Validity Of Measures, Polly Ryan, Marianne E. Weiss, Paula E. Papanek

Exercise Science Faculty Research and Publications

Background

Validity is about the logic, meaningfulness, and evidence used to defend inferences made when interpreting results. Substruction is a heuristic or process that visually represent the hierarchical structure between theory and measures.

Purpose

To describe substruction as a method for assessing the toretical validity of research measures.

Methods

Using Fawcett's Conceptual-Theoretical-Empirical Structure. an exemplar is presented of substruction from the Individual and Family Self-Management Theory to the Striving to be strong study concepts and empirical measures.

Results

Substruction tables display evidence supporting theoretical validity of the instruments used in the study.

Conclusion

A high degree of congruence between theory …

A 4-Week Multimodal Intervention For Individuals With Chronic Ankle Instability: Examination Of Disease-Oriented And Patient-Oriented Outcomes, Cameron J. Powden, Johanna M. Hoch, Beth E. Jamali, Matthew C. Hoch

Rehabilitation Sciences Faculty Publications

Context Individuals with chronic ankle instability (CAI) experience disease- and patient-oriented impairments that contribute to both immediate and long-term health detriments. Investigators have demonstrated the ability of targeted interventions to improve these impairments. However, the combined effects of a multimodal intervention have not been evaluated for their effects on a multidimensional profile of health.

Objective To examine the effects of a 4-week rehabilitation program on disease- and patient-oriented impairments associated with CAI.

Design Controlled laboratory study.

Setting Laboratory.

Patients or Other Participants Twenty adults (5 males, 15 females; age = 24.35 ± 6.95 years, height = 169.29 ± 10.10 cm, …

Tips For Allied Health Professionals To Successfully Engage With Research: A Commentary, Siti Nurliyana Abdullah, Saravana Kumar

Internet Journal of Allied Health Sciences and Practice

While allied health professionals are encouraged to engage with research, there are numerous challenges to do so in practice. In this commentary, we reflect on some of these challenges and provide some simple tips on strategies that can be used by allied health professionals to overcome these challenges. These tips may provide a starting point for allied health professionals to successfully engage with research.

Force Steadiness During A Cognitively Challenging Motor Task Is Predicted By Executive Function In Older Adults, Hugo M. Pereira, Bonnie A. Schlinder-Delap Mrs., Kristy A. Nielson, Sandra K. Hunter

Exercise Science Faculty Research and Publications

Motor performance and cognitive function both decline with aging. Older adults for example are usually less steady for a constant-force task than young adults when performing low-intensity contractions with limb muscles. Healthy older adults can also show varying degrees of cognitive decline, particularly in executive function skills. It is not known, however, whether age-related changes in steadiness of low-force tasks and cognitive function are independent of one another. In this study, we determined if executive function skills in aging are associated with the steadiness during a low-force muscle contraction performed with and without the imposition of a cognitive challenge. We …

Home-Based, Square-Stepping Exercise Program Among Older Adults With Multiple Sclerosis: Results Of A Feasibility Randomized Controlled Study, Emerson Sebastião, Edward Mcauley, Ryosuke Shigematsu, Brynn C. Adamson, Rachel E. Bollaert, Robert W. Motl

Exercise Science Faculty Research and Publications

There is very little known about exercise rehabilitation approaches for older adults with multiple sclerosis (MS), yet this growing segment of the MS population experiences declines in cognition and mobility associated with disease progression and aging. We conducted a RCT examining the feasibility of a 12-week, home-based Square-Stepping Exercise (SSE) program in older adults with MS. Older adults with MS (N = 26) with mild-to-moderate levels of disability were recruited and randomized into the intervention (i.e., SSE) or a minimal activity, attention-control conditions. Participants in the SSE condition received a mat for home-based practice of the step patterns, an …