Biomechanics Commons^™

Musculoskeletal Modeling Of The Pelvis And Lumbar Spine During Running, Ruth Higgins, Maryam Moeini, Hunter Bennett, Stacie Ringleb

College of Engineering & Technology (Batten) Posters

Musculoskeletal modeling provides an alternative to in-vivo characteristics that are difficult to directly measure for movements such as running, especially for trunk muscles and joints. The full-body-lumbar-spine (FBLS) model by Raabe and Chaudhari, 2016 is an OpenSim model created for simulations of jogging. The lifting full-body (LFB) model by Beaucage-Gauvreau et al., 2018 is an adaptation of the FBLS created for estimating spinal loads during lifting. PURPOSE: Determine validity of the FBLS and LFB models in simulating pelvis and lumbar spine kinematics during running. METHODS: Inverse Kinematics were executed using experimental data for the FBLS and LFB models. To …

Self-Selected Maximum But Not Jogging Speed Decreases With Age In Male And Female Runners, Heather Hamilton, Rumit Singh Kakar

College of Health Sciences Posters

Introduction: Running velocity decreases with age, likely resulting from physiological and musculoskeletal changes associated with aging. Females experience a more rapid decline in physical performance during middle age than males, therefore it is important to consider separate-sex analyses when studying running biomechanics and running-related injury. The purpose of this study was to determine the relationship between age and different running speeds separately for female and male runners.

Methods: Male (n=33) and female (n=46) runners (ages 18–65 years) ran at their self-selected JOG (long distance) and MAX (maximal running) pace on a treadmill. Running velocity was recorded. Simple linear regression was …

Trunk Kinematics Using Musculoskeletal Modeling During Range Of Motion Tasks, Maryam Moeini, Ruth M. Higgins, Hunter Bennett, Stacie Ringleb

College of Health Sciences Posters

A spine model can be used to predict post-spinal fusion motion needed to perform physical activities in individuals with scoliosis. Full body lumbar spine (FBLS) model (Raabi et al., 2016) allows for modeling lumbar spine and pelvis movement and was validated for jogging. However, like other existing adult spine models, FBLS model does not allow for a motion providing thoracic and spine. Purpose: To adapt the FBLS model for simulating thoracic, lumbar and pelvis motion during trunk rotation in all 3 planes of motion. Methods: Since T12-L1 in FBLS model is designed as a dependent joint (axial rotation analogous to …

Predictions Of Knee Joint Contact Forces Using Only Kinematic Inputs With A Recurrent Neural Network, Kaileigh Elisabeth Estler

Human Movement Studies & Special Education Theses & Dissertations

BACKGROUND: Knee joint contact (bone on bone) forces are commonly estimated using surrogate measures such as external knee adduction moments (with limited success) or musculoskeletal modeling (more successful). Despite its capabilities, modeling is not optimal for clinicians or persons with limited experience and knowledge. Therefore, the purpose of this study was to design a novel prediction method for knee joint contact forces that is equal or more accurate than modeling, yet simplistic in terms of required inputs. METHODS: This study included all six subjects’ (71.3±6.5kg, 1.7±0.1m) data from the opensource “Grand Challenge” datasets (simtk.org) and two subjects from the "CAMS" …

We Are People First, Mary I. Fisher

Physical Therapy Faculty Publications

No abstract provided.

Castor And Pteronura Tail Undulation Data, Frank E. Fish

Biology Data Repository

No abstract provided.

The Correlation Between Ankle Proprioception And Lower Extremity Muscle Reactions In Response To Simulated Lateral Ankle Sprains, Erin M. Carroll

Theses and Dissertations

Context: Lateral ankle sprains are one of the most commonly occurring sport-related injuries. The somatosensory system is primarily responsible for monitoring the position of the joints in space during movement. This system functions by way of neurological structures that provide proprioceptive and neuromuscular input to the brain. Motor control of the lower extremity relies on proprioceptive input to the central nervous system (CNS) and local neuromuscular control of each joint to produce coordinated, global muscular responses to external events. Previous research has investigated links between proprioception and neuromuscular control in relationship to ankle inversion separately, but none have searched for …

Gait Variability Is Affected More By Peripheral Artery Disease Than By Vascular Occlusion, Hafizur Rahman, Iraklis Pipinos, Jason M. Johanning, Sara A. Myers

Journal Articles

Background

Patients with peripheral artery disease with intermittent claudication (PAD-IC) have altered gait variability from the first step they take, well before the onset of claudication pain. The mechanisms underlying these gait alterations are poorly understood.

Aims

To determine the effect of reduced blood flow on gait variability by comparing healthy older controls and patients with PAD-IC. We also determined the diagnostic value of gait variability parameters to identify the presence of PAD.

Methods

A cross-sectional cohort design was used. Thirty healthy older controls and thirty patients with PAD-IC walked on a treadmill at their self-selected speed in pain free …

Efficacy Of The Opensim Simulator As A Tool To Detect Changes In Gait: A Peripheral Artery Disease Model, Cody Anderson, Hafiz Rahman, Irakis Pipinos, Jason Johanning, Sara Myers

UNO Student Research and Creative Activity Fair

INTRODUCTION

Peripheral Artery Disease (PAD) is characterized by atherosclerotic plaques in the leg arteries. A common treatment for PAD is supervised exercise training [1]. However, gait is not fully restored following supervised exercise training (SET). Musculoskeletal simulation may provide insight into how muscle activation changes following SET contributed to persistent gait alterations.

METHODS

Kinematic and kinetic data from overground walking of patients with PAD (n=12), before and after a 6-month exercise intervention, was used as input for musculoskeletal modeling (OpenSim). The subjects in our sample were subdivided based on the location of ischemic muscle pain, as reported on the San …

A Systematic Review: Long Range Correlations In Running Gait, Mr. Taylor Wilson

UNO Student Research and Creative Activity Fair

Long range correlations (LRCs) are apparent in human walking and running gait and are indicative of a healthy system. A systematic review (SR) was completed to determine the typical LRC patterns in running. 20 articles were included in the SR. LRCs in running gait tend to be similar to the LRCs in walking gait, with fatigue contributing to a negative effect on the LRCs.

This SR could have implications on training guidelines for coaches and physical therapy methods to increase the LRCs in running gait for healthier functioning. More research is needed to determine how LRCs depend on running surface …

Development Of A Modular Activity-Specific Upper Limb Prosthesis, Rahul Raj

UNO Student Research and Creative Activity Fair

The use of activity-specific upper-limb prosthesis helps children with upper-limb loss to engage in functional and recreational activities, such as music and sports. The purpose of this study was to develop a modular activity-specific prosthesis and develop a remote-fitting procedure. We evaluated patient satisfaction after using the device for 8 weeks and evaluated anthropometric and range of motion (ROM) measurements of the residual limb after use of the prosthesis. We enrolled 7 children with unilateral trans-radial amputations between 7 and 12 years of age. The modular activity- specific prosthesis was specifically designed for playing musical instruments and sports. A survey …

Biomechanical Assessment Of The Lower Extremity Following An Unexpected Ankle Perturbation, Emilia Gladys Schempp

Theses and Dissertations

A deeper understanding of the response to an unexpected ankle perturbation could help provide insight into ankle sprain injury avoidance strategies. This study compared lower extremity electromyographic and kinematic measures between unexpected ankle perturbation and normal walking conditions, including muscle amplitudes and reaction times, dominant limb joint angles and velocities. Trial conditions included a walking control condition, unexpected 30° inversion, and unexpected 18° combined inversion and plantarflexion. With randomized trials, 20 healthy volunteers walked along the custom-built walkway that unexpectedly released into the described ankle perturbations. Significant differences were found for peak and average EMG of the peroneus longus and …

The Effect Of Load On The Kinetics And Kinematics Of The Lower Extremity During Landing, Michael Akira Sullivan

Theses and Dissertations

Purpose: To understand the differences in the lower extremity kinetics and kinematics as load increases during jump landings. Methods: Ten male participants (20.4 years ± 2.41 years, 108.8kg ± 14.02kg) took part in two testing sessions. The first testing session involved testing each participant’s 1-repetition max in the hexagonal barbell deadlift. The second testing session involved the data collection of the jumping trials for each participant. Participants performed their countermovement jumps under seven randomized conditions. Six of the conditions involved the hex bar using loads equivalent to 10, 20, 30, 40, 50, and 60% estimated 1-repetition max of the hexagonal …

Foot Contact Dynamics And Fall Risk Among Children Diagnosed With Idiopathic Toe Walking, Rahul Soangra, Michael Shiraishi, Richard Beuttler, Michelle Gwerder, Lou Anne Boyd, Venkatesan Muthukumar, Mohamed Trabia, Afshin Aminian, Marybeth Grant-Beuttler

Electrical & Computer Engineering Faculty Research

Children that are diagnosed with Idiopathic Toe walking (cITW) are characterized by persistent toe-to-toe contacts. The objective of this study was to explore whether typical foot contact dynamics during walking predisposes cITW to a higher risk of falling. Twenty cITW and age-matched controls performed typical and toe walking trials. The gait parameters related to foot contact dynamics, vertical force impulses during stance, slip, and trip risk were compared for both groups. We found that cITW manifest less stable gait and produced significantly higher force impulses during push-off. Additionally, we found that cITW had a higher slip-initiation risk that was associated …

Examining Physical Activity In Users Of Campus Recreation During Campus Closure Due To Covid-19. Journal Of Kinesiology And Wellness, Katie Burcal, Michaela Schenkelberg, Jeanne Surface, Danae Dinkel

Journal Articles

Burcal K., et. al. Campus recreation facilities are a critical resource to encourage physical activity at universities. COVID-19 closures in 2020 led to the shutdown of many campuses, which included campus recreation facilities. Little is known about how the closures impacted the physical activity levels of students, faculty, and staff who relied on campus recreation for physical activity opportunities. Therefore, the purpose of this study was to determine if individuals who were users of campus recreation prior to campus closure continued to be physically active when campus closed. The survey was completed by 282 previous users (students, faculty, and staff) …

Lower Extremity Musculoskeletal Screening Tool Practices Among Athletic Trainers In Secondary School And Collegiate Settings, Megan B. Fowler, Elizabeth R. Neil, Cameron J. Powden

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

Purpose: Musculoskeletal (MSK) screening tools can allow athletic trainers (AT) to focus prevention efforts by providing patient risk information. The purpose of this study is to examine lower extremity MSK screening tool practices and perceptions of ATs in traditional settings. Methods: A cross-sectional online survey was distributed to 4,937 full- and part-time collegiate and secondary school ATs randomly selected by the NATA. MSK screening tools were grouped into 7 categories: Range of Motion (ROM), Strength, Balance, Drop and Jump Landing (D/J Land), Double- and Single-Leg Hopping (D/S Hop), Movement Quality (MQual), and Injury History (History). For each screening tool …

Indiana Secondary School Athletic Directors Perceptions Of Athletic Training Services And Influences On Hiring Athletic Trainers, Thomas J. Greffly, Matthew Rivera, Lindsey E. Eberman

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

Indiana Secondary School Athletic Directors Perceptions of Athletic Training Services and Influences on Hiring Athletic Trainers

Purpose: The purpose of this investigation was to examine ADs perceptions on satisfaction of current care provided, factors influencing the hiring of ATs, and the roles and responsibilities of ATs.

Methods: We used a mixed methods design with an online survey (Qualtrics^®, Provo, UT), which we distributed to Indiana secondary school ADs (n = 410) with publicly available emails. The survey remained open for 5 weeks with reminder emails sent weekly. We used a panel (n=2) with experience in survey research …

Examination Of Anger Prevalence In Ncaa Division I Student-Athletes, Robert Madden, Zachary K. Winkelmann, Samantha R. Weber, Erin M. Moore, Toni M. Torres-Mcgehee

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

Purpose: Anger associated with sports participation may affect inability to acutely process anger, may decrease performance and increase the likelihood of risk-taking behavior in collegiate athletes. Therefore, the purpose was to examine the prevalence of anger in collegiate student-athletes across sex, academic status, and sport type. Methods: A cross sectional study over a three-year period examined 759 NCAA Division I student-athletes at one institution (age=20±1 years; males: n=259; females: n=500) completed an optional pre-participation behavioral health screening questionnaire, personal demographic information and the Anger Index Self-Test. Results: Overall, 37.2% (n=282/759; males=127/259, 49.0%; females=155/500, 31.0%) of participants were at …

Modeling Individual Muscle Forces In The Lower Extremity During Loaded And Unloaded Hexbar Vertical Jumps, Abigail Salvadore

Theses and Dissertations

Hexagonal barbell (HB) loaded jumps are often used in training to increase lower extremity power. Given the importance of coordinated muscular effort in achieving maximal power output, an understanding of how the lower extremity musculature individually performs during loaded jumps would be advantageous. The purpose of this study is to describe the effect of load on individual muscle forces, muscle torques, and the contribution to the net joint moment (NJM) during the concentric phase of loaded HB jumps.10 male collegiate athletes performed 5 maximal HB jumps at 0%, 20%, 40% and 60% of their HB deadlift 1-repetition maximum. Filtered Ground …

Considerations For Implementation Of An Ankle-Foot Orthosis To Improve Mobility In Peripheral Artery Disease, Ayisha Bashir, Danae Dinkel, Ganesh M. Bapat, Holly Despiegelaere, Mahdi Hassan, Jason M. Johanning, Iraklis I. Pipinos, Sara A. Myers

Journal Articles

Objective

To explore the perceptions of wearing an ankle-foot orthosis (AFO) in patients with peripheral artery disease (PAD) who did and did not adopt the AFO intervention. This follows a clinical trial of the effectiveness of an AFO in improving walking distances for patients with PAD-related claudication.

Design

A randomized crossover trial of standard of care and an AFO for 3 months. Semistructured interviews were conducted 1.5 months into the AFO intervention to understand acceptability, demand, implementation, and practicality. Data were analyzed using a summative content analysis approach.

Setting

Vascular surgery clinic and biomechanics research laboratory.

Participants

Patients (N=15; …