Biomechanics Commons^™

Females With Urinary Incontinence Demonstrate Impaired Postural Stability, Jean L. Mccrory, Corrie Mancinelli, Kate Harrison, Samantha K. Rondini Monaco, Krystal L. Thomas

Internet Journal of Allied Health Sciences and Practice

Introduction: Females with urinary incontinence (UI) have an increased risk of falls.  Few studies have quantified postural control, namely center of pressure (COP) movement and vertical ground reaction force in static and dynamic tasks, in females with UI. Purpose: The aim of our study was to examine static and perturbed postural stability in females with UI compared to unaffected females. Methods: The study design was a between-group comparison (UI vs control) on our static outcome variables of anteroposterior and mediolateral COP sway, COP displacement, average and instantaneous maximum COP velocity, and standard deviations of anteroposterior and mediolateral COP movement and …

Mri-Based Estimation Of The Hip Joint Center In Infants Using Two Sphere-Fitting Methods, Victoria Melendez

Discovery Day - Daytona Beach

Accurate estimation of the hip joint center (HJC) is critical for biomechanical modeling and clinical assessment. Common methods include predictive methods (e.g., regression equations) and functional methods such as sphere-fitting. In infants, femoral head-based methods are often limited due to incomplete ossification of the anatomy and poor visualization in computed tomography (CT) images. This study evaluates an alternative approach using MRI-based sphere fitting of the ossified acetabular rim, comparing its accuracy to traditional femoral head-based methods. MRI scans of three male infants (ages 10.7- 12.7 months) were used to manually place landmarks on the ossified acetabulum and the cartilaginous boundary …

The Osteocyte-Osteoblast Network Requires Dynamic Mechanical Loading For Key Functions, Kevin Kowalski

Discovery Day - Daytona Beach

Spaceflight investigations have demonstrated that reduction in gravity-induced loading regimes is detrimental to maintenance Earth-normal bone and marrow. Mechanistically, however, there are still gaps in knowledge about how the reduction in gravity influences the different niches within the tissue. For example, cortical bone is a stable semi-solid structure that allows for only minor deformations before failure, while marrow is a viscous hydrogel-like material that can resist significant fluidic and compressive forces. We hypothesize that maintenance of different niches within the bone microenvironment are dependent on different loading regimes, and that the collective impact if gravity-induced loading needs to be considered …

Comparison Of Lower-Extremity Coordination Patterns During Countermovement Jumps Between Dancers And Nondancers, Danielle Joseph

Honors Theses

Jumping is a skill essential to several different sports, including dance. For athletes in jump-dominant sports, jump strategies can vary with differences in task demands while jump performances are similar. The countermovement jump (CMJ) has been utilized to analyze jumps because of their reliable indications of power and neuromuscular function. Methods of describing jump strategies using CMJ, such as force plate metrics, vector coding analysis, and coordination phases, have been used to describe the jumps of athletes in jump dominant sports such as basketball and volleyball. However, less jump strategy research has been done on dancers, especially to describe the …

Haptic Portable Robotic Device For Automated Guidewire Or Catheter Navigation In Endovascular Procedures, Vahid Mohammadi, Jason Mactaggart, Majid Jadidi, Alexey Kamenskiy

Journal Articles

Purpose

Endovascular therapy is preferred over open surgery due to its minimally invasive nature, faster recovery, and lower perioperative risk; however, fluoroscopy guided procedures are limited by radiation exposure, high equipment costs, and reliance on highly skilled operators. This study aims to develop and evaluate a lightweight, portable robotic system for autonomous guidewire navigation to improve safety, accessibility, and operator independence.

Methods

A compact 400 g robotic device was designed with millimeter scale positioning accuracy, servo current-based real-time haptic feedback, precise axial rotation, automated retraction advance control, and compatibility with standard endovascular tools. Miniature linear actuated servomotors replicate skilled manual …

Assessing The Relationship Between The Degree Of Static And Dynamic Quadricep Angle And Kinetic Asymmetry Index % In Females During The Follicular Phase Of Menstruation, Madeline Grace Poirier

All NMU Master's Theses

The quadriceps angle (q-angle) quantifies lateral pull on the knee. Females have greater static and dynamic q-angles due to anatomical factors including a wider pelvis and more lateral tibial tuberosity, which may influence ACL injury risk. The kinetic asymmetry index (KAI %) measures limb-to-limb differences in ground reaction force (GRF) impulses during dynamic tasks including countermovement jumps (CMJs), with values > 10% linked to injury risk. During the follicular phase of the menstrual cycle, fluctuating hormones increase joint laxity, further heightening biomechanical vulnerability in females.

This cross-sectional study examined the relationship between static and dynamic q-angle and KAI % in active, …

University Of Nebraska At Omaha Division Of Biomechanics And Research Development Annual Report 2023-2025, Uno Biomechanics

Biomechanics Annual Report

This report contains:

A letter from the Director: Dr. Nick Stergiou

Highlights articles

Center for Cardiovascular Research in Biomechanics (CRiB) articles

The Center for Research in Human Movement Variability (MOVCENTR) articles

People of UNO Biomechanics

Student Centered articles

Education Initiative articles

Limits Of Post-Activation Performance Enhancement: Asymmetry Persists Despite Performance Gains, Talia Thompson, Monique Mokha

Journal for Sports Neuroscience

Post-activation performance enhancement (PAPE) protocols are commonly used to improve power, yet their influence on inter-limb force symmetry remains unclear. This study examined the effects of a PAPE protocol on inter- and intra-session symmetry and performance during a countermovement (CMJ. Ten American football players preparing for the National Football League’s draft completed a complex PAPE protocol consisting of two baseline CMJ trials on dual uniaxial force plates, followed by three sets of maximum effort lower-body lifts (e.g., split squats) alternated with two CMJ trials. Jump height (JH), reactive strength index modified (RSImod), and asymmetry indices for concentric impulse (CIA), eccentric …

Difference Between Postural Sway, Functional Fitness, And Behavioral Measures In Older Adult Fallers & Non-Fallers, Olivia Maus, Rebecca Brandhorst, Andrea Geisenhof, Kyle Reason

InnovateHER Meeting 2026

BACKGROUND: Falls are among the leading causes of injury, hospitalization, and loss of independence among older adults. There is not enough research to determine how body composition, fitness, and postural sway affect balance.

METHODS: Participants completed surveys measuring behaviors around fall risk, assessment of body composition, postural sway, and functional fitness.

RESULTS: There was a significant difference between OF and ONF on the FES-I (p=0.05; d=-0.41) and the ABC-6 (p=0.008; d=0.57). There was significance on condition three of the mCTSIB (p=0.007; d=-.58), and composite score (p=0.04; d=-0.43).Significance between groups was approached on condition one of the mCTSIB (p=0.06; d=-0.39).

CONCLUSIONS: …

Turf Toe And Sesamoid Fracture Case Study, Mason Cannon

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE This case presents the evaluation and management of a 15-year-old male multi-sport high school athlete. The athlete initially sustained a turf toe injury that progressed into a sesamoid fracture. This report showcases the clinical findings, treatment progression, and outcomes within a disablement model framework.

Prevalence Of Low Energy Availability (Lea) Risk In Division Iii Female Distance Athletes, Ciara Murphy

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE The objective of this study was to explore the prevalence of LEA among division III female distance athletes.

The Effectiveness Of An Educational Program On Young Swimmers Water Consumption And Dry Land Exercises, Maria Thibodeaux, Shelby Bay, Maddie Hoyt, Elizabeth Starns, Elizabeth Nix

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE/CONTEXT Although shown to improve performance, many young swimmers are reluctant to participate in dry land exercises.¹ They are also more likely to become dehydrated than their non-swimming counterparts, suggesting they are not adequately hydrating during activity and throughout their day.² Therefore, this study aimed to evaluate the impact of a four-week educational program on dry land exercises and water consumption.

From Focal Chondral Defect To Matrix-Induced Autologous Chondrocyte Implantation In An Active Adult: A Case Study, Zoey Scott

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE Present a clinical case detailing the undetermined consequential factors associated with FCD progression  in athletic populations, and the subsequent challenges.

Post-Surgical Dislocations: A Latarjet Procedure, Brianagh Dean, Kimberly S. Peer

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

BACKGROUND The glenohumeral joint is the most frequently dislocated joint in the body, with an incidence rate of 40.4 per 100,000 in men and 15.5 per 100,000 women. Recurrence rates following a first-time anterior shoulder dislocation range from 33-40%, particularly among adolescent collision-sport athletes. Arthroscopic Bankart repair is performed to address anterior instability, however recurrent instability may occur in the presence of glenoid bone loss. The Latarjet surgery is indicated in cases of recurrent anterior instability with significant bony deficiency, functioning through a triple-blocking mechanism increasing glenoid surface area via coracoid transfer, creating a dynamic sling effect from the conjoined …

Oral Contraceptives Rate Of Reduction On Anterior Cruciate Ligament Injuries In Females: A Critically Appraised Topic, Paige Trent, Sara Stiltner

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

CLINICAL SCENARIO Anterior cruciate ligament (ACL) injuries occur more frequently in females than males, with estimates suggesting a 2-10 greater likelihood of females to sustain this trauma.3 FIFA issued a recent call to action encouraging further investigation into why females are still predisposed to this trauma.2 ACL incident rate is highest amongst females between 14–18-years-old with approximately 227.6 exposures per 100,000 persons per year.1 Multifactorial influences are suggested as predisposing risk factors including anatomical or hormonal components.1 Growing interest in hormonal contributions has led researchers to examine how fluctuations in estrogen, progesterone, and testosterone impact ligamentous integrity.8

Estrogen receptors are …

Case Report: Chronic Peroneal Subluxation, Natalie Weissman, Morgan Cooper Bagley, Colin Reidy

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE The case study presented explores the sign, symptoms, and unique treatment of a patient with a chronic peroneal subluxation of the right ankle. The clinical evaluation showed full range of motion with visible peroneal tendon movement over the right lateral malleolus. Surgery was not done or recommended; a four-phase rehabilitation with a return to play protocol was used. This case showed how rehabilitation through a non-surgical approach is still achievable.

The Effect Of Taper On Scapular Positioning In Division Iii Collegiate Swimmers, Maddie Hoyt, Elizabeth Starns, Andrew Busch

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE Scapular asymmetry and lateral translation are prevalent in competitive swimmers due to the repetitive overhead nature of the sport.^1,2 Additionally, ambiguity exists in the reliability of non-invasive scapular assessments. First, this study aimed to compare differences in scapular positioning during the competitive swimming season to the tapered season. The tapered season is marked by a significant decrease in intensity.^3,4,5 Second, this study aimed to determine the reliability of three commonly used scapular assessments.

Anterior Cruciate Ligament Autograft Reconstruction Outcomes In Adolescents And Young Adults: A Critically Appraised Topic, Klevione D. Brown, River A. Hamilton, Elizabeth A. Starns

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

CLINICAL SCENARIO Anterior cruciate ligament (ACL) tears are one of the most common serious knee injuries seen in high school and college-aged athletes.¹ Many athletes opt for surgical reconstruction because ACL injuries often result in knee instability and impair their ability to return to play in their sport.² There are three primary types of autografts used in reconstruction: bone-patellar tendon-bone (BTB), hamstring tendon (HT), and quadriceps tendon (QT) autografts.³ It is important to determine if a graft type has better return-to-play outcomes for adolescent and young adult athletes.

Sport-Related Concussion Incidents Across Sports, Surfaces, And Injury Mechanisms: A Retrospective Analysis Of A Digital Concussion Database, Justin Belle, Jay Alberts, Jason Cruickshank, Richard Figler, Kelsey Owen, Sami Rifat

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE/CONTEXT Sport-related concussion (SRC) represents a significant injury burden in youth athletics. Advances in digital injury surveillance platforms allow for large-scale clinical databases that may provide insight into injury mechanisms, sport distribution, and management patterns. The purpose of this study was to describe the distribution of concussion-related incidents across sports, playing surfaces, and mechanisms of injury using data from a prospectively maintained clinical concussion database.

Dysautonomia In Adolescent Athletes With Persistent Post‑Concussion Complaints, Jason A. Cruickshank

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE/BACKGROUND Dysautonomia is dysfunction in autonomic nervous system manifesting following concussion, contributing to Persistent Post‑Concussion Complaints (PPCC).^1,5 Patients with dysautonomia may present with dizziness, tachycardia, postural intolerance, headaches, cognitive fog, and activity/exercise intolerance.^1,5 Recognition of autonomic involvement is essential to recovery and preventing prolonged symptoms^.1,5

The Effectiveness Of A Mental Health Literacy Webpage For Parents, Coaches, And Athletic Trainers, Mackenzie Warner, Kimberly Peer, Hannah Harnar, David Dees

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

INTRODUCTION Mental health illnesses continue to emerge as a major public health concern, particularly among adolescents and young adults. Secondary school student-athletes face unique pressures related to academics, athletic performance, time management, injuries, and social expectations, all of which may contribute to anxiety, depression, stress, or other mental health conditions. However, there is limited research that explores secondary school student-athletes and how mental health affects their everyday lives. This could be due to the lack of mental health literacy in the individuals who surround secondary school student-athletes, including parents, coaches, and athletic trainers. Increasing their understanding of mental health literacy …

Understanding Athletic Trainer's Knowledge And Perceptions Of Mental Health Best Practices: A Mixed-Methods Study, Chelsea Pasukinis, Yvette Ingram, Malissa Martin, Robert B. Krueger

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE Mental health disorders are increasing in our society. Research on athletic trainers' (AT) knowledge and perception of mental health disorders, and whether policies are developed and used, is limited. The purpose of this study is to investigate AT’s knowledge of mental health illness, current policies and procedures, and the perceptions ATs have of mental health.

A Case Report Of Blunt Renal Trauma In A High School Football Athlete, Mariah Reeder

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE/BACKGROUND Blunt abdominal trauma in football athletes is uncommon but carries significant risk for internal organ injury and hemorrhage. Although sport-related renal injuries are rare, a significant portion of them are high-grade (IV-V) and may require advanced medical intervention if not recognized promptly.¹ Symptoms may initially appear benign, such as “having the wind knocked out,” increasing the risk of delayed diagnosis. Athletic trainers often serve as first responders and play a critical role in early recognition, on-field management, and prompt referral for advanced medical care. This case highlights athletic trainer led clinical decision making and interdisciplinary coordination following blunt …

Assessment Of A Middle School Return To Learn Concussion Protocol, Aaron Yaksich, Laura L. Harris

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE To evaluate the effectiveness of a newly implemented return to learn (RTL) concussion protocol in an adolescent athletic population.

Challenging The Standard: A Case Report Of Postpartum Rehabilitation Prior To Return To High-Intensity Functional Training, Aly Matejka

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE Postpartum athletes frequently attempt to return to high-intensity training without graded rehabilitation of the deep core and pelvic floor complex, contributing to urinary incontinence, impaired load transfer, unresolved diastasis recti, and decreased performance capacity. Despite increasing participation of postpartum individuals in high-load functional training, there is limited applied literature outlining structured, criterion-based return-to-exercise progressions that address breathing mechanics, pelvic floor function, and force development prior to reintroduction of impact and resistance training. This case report describes the implementation of a 15-week postpartum rehabilitation and return-to-training protocol designed to restore neuromuscular control, muscular endurance and strength, and impact tolerance prior …

A Post-Professional Athletic Training Education Module For Detecting Skin Conditions In Diverse Skin Tones, Lauren Oskam, Laura L. Harris

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

OBJECTIVE To develop and evaluate a learning module designed to improve athletic trainers’ proficiency in identifying skin conditions commonly acquired in the sport of wrestling across diverse skin tones.

Polydactyl Precursors: Insights Into Early Tetrapod Locomotion From Polydactyl American Alligators, Trevor P. Brewington

All Theses

Several of the earliest tetrapod lineages exhibited polydactyl limbs, with seven or eight digits per limb rather than the typical five or fewer seen in extant lineages. How these digit configurations might have been used during terrestrial locomotion is unclear, given the lack of living models in which their performance can be studied and limited evidence from fossil trackways. However, polydactyly occasionally appears in natural populations of American alligators (Alligator mississippiensis), animals with body plans that broadly resemble those of early tetrapods. To test how polydactyl limbs similar to those of early tetrapods might have functioned on land, …

The Impact Of High-Cadence Cycling On Overground Running Performance In Recreational Runners, Matthew Ott

Master's Theses

Cycling is a commonly used exercise because it provides a controllable cardiovascular and musculoskeletal demand while imposing relatively low impact on the rider. High-cadence cycling (HCC) has been shown to influence subsequent running performance and gait performance by increasing cadence and reducing work rate when cycling prior to running. However, most of this work has focused on triathletes and older adults. Therefore, the purpose of this study was to examine the acute effects of HCC on subsequent 800 m running performance and spatiotemporal parameters in adult recreational runners. Thirty recreational runners completed two testing sessions. On Day 1, participants performed …

Comparative Biomechanics: Blattodea Antennal Morphology And Physiology, Lucas W. Marsh

All Theses

Equipped with muscle-free antennae, many insects can twist and bend their antennae on demand. We hypothesized that hemolymph circulating through the antennae provides pressure that facilitates twisting and bending and provides a feedback control channel for tactile sensing in insects. To test this hypothesis, we conducted a thorough morphological and physiological analysis of antennae in three Clades of Blattodea. We studied morphology by evaluating the distinguishable features of the body and antenna, as well as the internal structure of the antennal lumen. Then, in a series of experiments on live cockroaches, we measured blood pressure along the antenna. This was …

Development And Validation Of Kinetics And Musculoskeletal Modeling For The Milwaukee Foot Model, Maxine L. Olson

Dissertations (1934 -)

Many children are afflicted by foot and ankle pathologies which affect the ankle, midfoot, and metatarsophalangeal joints. However, a clinically feasible foot model capable of assessing multi-segment kinetics throughout the gait cycle does not exist. Similarly, a musculoskeletal foot model utilizing multiple ground reaction forces (GRF) and Milwaukee Foot Model (MFM) kinematics has not been created. The purpose of this study was to develop a clinically feasible method of modeling multi-segment foot properties without increased clinician and/or patient burden or expense. To this end, a force distribution algorithm (FDA) was created, allowing for calculation of multi-segment foot kinetics, musculoskeletal modeling, …