Kinesiotherapy Commons^™

Muscle-Specific Contributions To Lower Extremity Net Joint Moments While Squatting With Different External Loads, Kristof Kipp, Hoon Kim, William I. Wolf

Exercise Science Faculty Research and Publications

The purpose of this study was to determine muscle-specific contributions to lower extremity net joint moments (NJMs) during squats with different external loads. Nine healthy subjects performed sets of the back squat exercise with 0, 25, 50, and 75% of body mass as an added external load. Motion capture and force plate data were used to calculate NJMs and to estimate individual muscle forces via static optimization. Individual muscle forces were multiplied by their respective moment arms to calculate the resulting muscle-specific joint moment. Statistical parametric mapping (α = 0.05) was used to determine load-dependent changes in the time series …

Analysis Of Pelvic Alignment Patterns Utilizing The Postural Restoration Institution Approach, Marisa Mills

West Chester University Master’s Theses

Background: Low back pain is a common problem that can include injury to the sacroiliac joint (SIJ) with 15-30% of cases arising from LBP. Treatment for SIJ includes muscle energy. A newer approach from Postural Restoration Institution (PRI) centered around pelvic patterns alignment has also been used. There’s limited research found describing the prevalence of pelvic patterns within populations with PRI method.

Purpose: To examine prevalence of pelvic patterns and investigate a relationship of low back pain. Furthermore, to explore the specific patterns closely and the ability to re-align pelvic patterns by utilizing PRI repositioning exercises.

Study Design: Cross …

Modelling Muscle Activation Using Emg Signal, Mercy U. Okonna

College of Graduate Studies: Theses & Dissertations

(EMG) is a method for measuring muscle activity by an electrical signal, and is useful in studying motor control, postural control, and in physical therapy. A current research topic is creating an algorithm that can use the EMG signal to reliably classify a muscle as active or inactive. This thesis presents a classification algorithm for leg muscles with a single activation spike while walking. Time is rescaled into steps, which are identified using data from cameras measuring joint angles while walking. The algorithm is based on moving averages and a convex combination of mean signal strength in active and inactive …

Neurophysiological And Psychological Characteristics Of Individuals With History Of Lateral Ankle Sprain, Katherine Bain

Theses and Dissertations--Rehabilitation Sciences

Lateral ankle sprain (LAS) is among the most common lower limb musculoskeletal injuries impacting both the general and sport populations. Even more problematic is that approximately 70% of individuals who sustain an LAS develop residual deficits. Of that subgroup, roughly 40% develop chronic ankle instability (CAI). Chronic ankle instability is a clinical diagnosis defined by the presence of ongoing impairments following the initial LAS which may include perceived instability, pain, mechanical instability, and episodes of giving way during physical activity. Not all who sustain multiple ankle sprains or experience residual deficits fit the clinical diagnosis criteria for CAI; yet may …

Hip And Knee Joint Angle Patterns And Kicking Velocity In Female And Male Professional Soccer Players: A Principal Component Analysis Of Waveforms Approach, Archit Navandar, Kristof Kipp, Enrique Navarro

Exercise Science Faculty Research and Publications

This study used principal component analysis (PCA) of waveforms to extract movement patterns from hip and knee angle time-series data; and determined if the extracted movement patterns were predictors of ball velocity during a soccer kick. Twenty-three female and nineteen male professional soccer players performed maximal effort instep kicks while motion capture and post-impact ball velocities data were recorded. Three-dimensional hip and knee joint angle time-series data were calculated from the beginning of the kicking leg’s backswing phase until the end of the follow-through phase and entered into separate PCAs for females and males. Three principal components (PC) (i.e., movement …

Maximal Strength In Relation To Force And Velocity Patterns During Countermovement Jumps, Michael H. Haischer, John Krzyszkowski, Stuart Roche, Kristof Kipp

Exercise Science Faculty Research and Publications

Maximal strength is important for the performance of dynamic athletic activities, such as countermovement jumps (CMJ). Although measures of maximal strength appear related to discrete CMJ variables, such as peak ground reaction forces (GRF) and center-of-mass (COM) velocity, knowledge about the association between strength and the time series patterns during CMJ will help characterize changes that can be expected in dynamic movement with changes in maximal strength. Purpose: To investigate the associations between maximal strength and GRF and COM velocity patterns during CMJ. Methods: Nineteen female college lacrosse players performed 3 maximal-effort CMJs and isometric midthigh pull. GRF …

The Evolution Of Blood Flow Restricted Exercise, Eduardo D. S. Freitas, Murat Karabulut, Michael G. Bemben

Health & Human Performance Faculty Publications

The use of blood flow restricted (BFR) exercise has become an accepted alternative approach to improve skeletal muscle mass and function and improve cardiovascular function in individuals that are not able to or do not wish to use traditional exercise protocols that rely on heavy loads and high training volumes. BFR exercise involves the reduction of blood flow to working skeletal muscle by applying a flexible cuff to the most proximal portions of a person's arms or legs that results in decreased arterial flow to the exercising muscle and occluded venous return back to the central circulation. Safety concerns, especially …

Accuracy Of Body Mass Index In Categorizing Weight Status In Children With Intellectual And Developmental Disabilities, Michele Polfuss, Bethany Forseth, Dale A. Schoeller, Chiang-Ching Huang, Andrea Moosreiner, Paula E. Papanek, Kathleen J. Sawin, Kimberley Zvara, Linda Bandini

Exercise Science Faculty Research and Publications

PURPOSE:

To identify the accuracy of Body Mass Index (BMI) to categorize body weight in a sample of children with spina bifida and Down syndrome as compared to typically developing peers.

METHODS:

A secondary analysis of 32 children with spina bifida, Down syndrome or no chronic illness. A calculated BMI was plotted on the Centers for Disease Control and Prevention age- and sex-specific BMI growth charts to determine each child’s weight status. Percentage of body fat, obtained by labeled water, was plotted on two different body fat percentile reference curves, one derived from a whole body measure (DXA) of body …

Disability And Healthcare Access In Morocco: Social And Cultural Influences, Christa Shipman

Independent Study Project (ISP) Collection

I stepped into the SIT Multiculturalism and Human Rights program as a pre-physical therapy student with experience working and volunteering in the disability rights arena. Striking personal encounters with Moroccans combined with these past experiences drew me to investigate how social and cultural factors influence access to healthcare for people with disabilities. I hypothesized that access to medical care is limited by social or cultural mindsets, perceptions, or beliefs for those in my target population. This subject is relevant to Morocco as a developing country and as a society with, in some cases, fixed social dynamics, while in other areas …

Comparison Of Constant Load Exercise Intensity For Verification Of Maximal Oxygen Uptake Following A Graded Exercise Test In Older Adults, Ian R. Villanueva, John C. Campbell, Serena M. Medina, Theresa M. Jorgensen, Shannon L. Wilson, Siddhartha S. Angadi, Glenn A. Gaesser, Jared M. Dickinson

All Faculty Scholarship for the College of Education and Professional Studies

Maximal oxygen uptake (VO₂max) declines with advancing age and is a predictor of morbidity and mortality risk. The purpose here was to assess the utility of constant load tests performed either above or below peak work rate obtained from a graded exercise test for verification of VO₂max in older adults. Twenty-two healthy older adults (9M, 13F, 67 ± 6 years, BMI: 26.3 ± 5.1 kg·m⁻²) participated in the study. Participants were asked to complete two experimental trials in a randomized, counterbalanced cross-over design. Both trials (cycle ergometer) consisted of (1) an identical graded exercise …

Exercise And Chronic Pain, Maren Wright Voss, Mateja R. Savoie-Roskos, Casey Coombs, Gabriela Murza, Cindy Nelson, Elise Withers

All Current Publications

Chronic pain is perhaps the most pervasive medical issue in the United States. The long-term impacts of chronic pain often cause individuals to reduce or eliminate physical activity. Chronic pain can impact physical, mental, and emotional well-being, which can limit daily activity and quality of life. The purpose of this fact sheet is to address the common barriers to being physically active with chronic pain and provide suggestions for safe ways to be physically active even when chronic pain is present.

Influence Of The Bar Position On Joint-Level Biomechanics During Isometric Pulling Exercises, Nayun Ahn, Hoon Kim, John Krzyszkowski, Stuart Roche, Kristof Kipp

Exercise Science Faculty Research and Publications

The purpose of this study was to investigate the influence of the bar position on ankle, knee, and hip net joint moments (NJMs), relative muscular effort (RME), and vertical ground reaction forces (GRFs) during isometric pulling exercises, such as the isometric midthigh pull. Eight female lacrosse athletes performed maximal effort isometric pulls at 3 different bar positions (low: above patella, mid: midthigh, and high: crease of hip) while motion capture and GRF data were recorded. Net joint moments were calculated with inverse dynamics. Relative muscle effort was defined as the ratio between the inverse dynamics NJMs and the maximum theoretical …

Influences Of Sleep Disturbances And Mild Traumatic Brain Injury On Gait Performance Among College Student-Athletes, Narjes Asgari

Health and Kinesiology Theses

Sleep disturbances from stress are common among college students. In addition, student-athletes in contact sports (e.g., football and soccer) are at a higher risk of receiving a mild traumatic brain injury(mTBI). Stress-related sleep disturbances and mTBI may provoke cognitive and brain changes associated with gait abnormalities. Therefore, the purpose of this study was to examine the association between stress, sleep disturbances, mTBI, and gait performance among college student-athletes. Twelve college student-athletes from men’s and women’s soccer teams who indicated a history of mTBI (experimental group) and twenty-eight college students without a history of mTBI (control group) were recruited and asked …

Menstrual Dysfunction As The Leading Clinical Marker For The Future Development Of The Female Athlete Triad: A Meta-Analysis, Sydney Hotz

Health and Kinesiology Theses

The Female Athlete Triad is a diagnosable medical condition that is under researched and very prevalent in female sports today. The development of the Female Athlete Triad, or any of its components, can negatively impact many aspects of a female athlete’s life. If clinical markers could be identified that indicate future development of the Triad, it could potentially help prevent occurrence of the condition and greatly reduce the number of female’s that have to suffer from it. Menstrual dysfunction could be the leading clinical marker for the future development of the Triad. This meta-analysis seeks to explore the possible association …

Acute Effects Of Static Stretching/Foam Rolling On Muscle And Tendon Stiffness, Michaela Lawlor

Honors Theses

There are various ways to decrease muscle and tendon stiffness, including but not limited to: static stretching, ballistic stretching, cycle stretching, passive and active stretching, and foam rolling. The purpose of this paper is to review different studies that focus on the acute effects of static stretching and foam rolling on muscles of the leg including the gastrocnemius, rectus femoris, hamstrings, soleus, etc. Results showed that static stretching and foam rolling decrease muscle and tendon stiffness in the leg while simultaneously increasing their range of motion, flexibility, and muscle fascicle length immediately after exercise.

Comparative Gait Analysis Of Transtibial Amputees Versus, Charlotte Vitale

Senior Honors Projects

While individuals with lower limb prosthetics make up a very small percentage of the population, their musculoskeletal deformities impair their abilities to produce “normal” biomechanical actions. The deviations in their walking patterns can further inhibit their efficacy in other activities of basic living. Understanding the distinct kinematic comparisons during gait between lower limb amputees and able-bodied individuals is critical for those planning to enter such a field of study working with this specific population. As an aspiring specialized Physical Therapist, it is very likely that I will be assisting clients to regain a healthy walking pattern after a traumatic accident, …

Graded Motor Imagery In Hand Therapy Practice, Alexis Brackins

Department of Occupational Therapy Entry-Level Capstone Projects

No abstract provided.

Brachial Plexus Injury In 16 Year Old Football/Soccer Player, Becca Goldman

Graduate Research Showcase

Background: This subject of this case is a 16-year-old football offensive tackle/defensive end and soccer player. The subject is undersized for his position, weighing in at about 190 pounds. The injury occurred during the football season but was not reported to the athletic trainer until after the football season was over. The actual moment the injury occurred is unknown. During a weight training day after the end of the season the subject complained to the athletic trainer that he was unable to bench press because of pain in his right shoulder. Upon further examination, the athletic trainer discovered significant atrophy …

Comparison Of 360° Turn Cycles Among Individuals After Stroke And Healthy Older Adults, Rahul Soangra, Vennila Krishnan, Joby John, Ehsan Rashedi, Alison Mckenzie

Physical Therapy Faculty Articles and Research

Stroke survivors are at high risk of falling during turning. The kinematics of performing a 360° turn have not been fully analyzed among individuals after stroke. Quantitative differences in the parameters of turning between healthy older adults and those after stroke could provide detailed information on turning ability among these groups. The purpose of the current study was to characterize differences between healthy older adults and adults after stroke in 360° turn kinematics. Fourteen individuals with chronic stroke (mean age: 69 ± 8.4 years) and 14 healthy older adults (mean age: 74 ± 8.7 years) performed three trials of 360° …

The Reliability Of Tensiomyography For Assessment Of Muscle Function: A Systematic Review, Stephon Moise, Daniel Hampton

UCF DPT Research Capstone

Tensiomyography (TMG) is a non-invasive tool used to assess skeletal muscle tissue, including Displacement (Dm), Contraction Time (Tc), Sustain Time (Ts), Relaxation Time (Tr), and Delay Time (Td). This tool can be used clinically to determine muscular response to exercise.

PURPOSE: The purpose of this study was to investigate the reliability of TMG measurements.

METHODS: Studies were identified from multiple databases and evaluated for inclusion. All studies underwent a quality assessment using the Modified Downs and Black checklist for assessing quality studies, and results were extracted from qualified articles.

RESULTS: 635 studies were identified with 16 studies retained following full …