Rehabilitation and Therapy Commons^™

Is Decreased Trunk Flexion Angle A Contributing Factor To Patellofemoral Joint Loading In Runners With Patellofemoral Pain?, Christine Duvall, Zachary Clark, Tavin Fox, Caitlin Howden

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose/Hypothesis: Reduced trunk flexion during running is theorized to be a contributing factor of elevated patellofemoral joint (PFJ) stress in runners with patellofemoral pain (PFP); thus, the primary purpose of this research study was to determine if runners with PFP would exhibit differences in PFJ stress and trunk flexion angle during running as compared to pain-free runners across three speeds. We hypothesized that runners with PFP would exhibit higher PFJ stress and decreased trunk flexion while running compared to the pain- free runners. Number of Subjects: 7 runners with PFP and 5 similar pain-free control runners. Materials/Methods: Kinematics and kinetics …

Effect Of Blood Flow Restriction Training On Functional And Self-Reported Outcomes In Female Runners With Patellofemoral Pain, Lauren Nicole Erickson

Theses and Dissertations--Rehabilitation Sciences

Background: Patellofemoral pain (PFP) is the leading cause of lower extremity injury in female runners, significantly limiting running ability and becoming chronic in nearly 50% of the cases. This condition, which presents as pain around (peripatellar) or behind (retropatellar) the patella, is associated with significant weakness of the quadriceps and gluteal musculature, as well as altered movements mechanics. The challenge for clinicians is designing an effective treatment program to reduce pain and improve function without causing symptoms to flare. Blood flow restriction training (BFRT) is a relatively new training method within rehabilitation that involves placing a pressurized cuff to the …

Patellofemoral Joint Stress During Uphill And Downhill Running In Healthy, Theresa French, Brooks Klein, Young Lee

UNLV Theses, Dissertations, Professional Papers, and Capstones

Subjects: Twenty recreational runners participated (mean age of 24.9 years). Methods: Kinematics and kinetics of the trunk and lower extremity were obtained at 3 conditions: level, 6° uphill, and 6° downhill, at a speed of 2.3 m/s. PFJ stress was determined using a biomechanical model that incorporates knee flexion angle and knee extensor moment as subject-specific input variables. The model output consisted of PFJ reaction force, PFJ stress, and PFJ contact area. One-way ANOVAs with repeated measures and post-hoc t-tests with a Bonferroni adjustment were used to compare outcome variables across the 3 conditions. Results: Peak PFJ stress during downhill …

The Effect Of Foot Strike In Female Runners, Courtney Dockry

Williams Honors College, Honors Research Projects

Abstract

PURPOSE: The purpose of this study is to determine if heel and forefoot striking influence on the amount and type of injuries in recreational female distance runners between the ages of 18 and 25. In addition, shoe type and training intensity were analyzed in relation to injury. METHODS: A quantitative, cross-sectional study was conducted anonymously utilizing The University of Akron’s Qualtrics survey tool. The survey was adopted based on Goss and Gross (2012). The survey was sent via email to members of the Zips Running Club, as well as other runners who fit the criteria to participate …

Can Simple Postural Instructions Modify Running Forms In Recreational Runners, Casey Gray, Matthew Poggemiller, Ian Tracy

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose/Hypothesis: Recent research suggests that alteration of trunk angle and foot strike pattern during running may result in beneficial changes that prevent running related injuries due to reduction in vertical ground reaction forces (vGRF). For example, running form emphasizing a forward trunk lean and a midfoot or forefoot strike pattern has been shown to be effective in reducing knee stress and the risks of other impact-related running injuries. In clinical practice however, it is currently unknown if simple postural cues given to runners can elicit motor learning that leads to modification of running form. The purpose of this study was …

Altering A Runner’S Foot Strike Using A Modified Elliptical Trainer, Daniel Shull

Theses and Dissertations

One possible solution to common running related injuries is to transition runners from a rearfoot strike during initial contact to a midfoot strike. Natural rearfoot strike runners were studied to see if a modified elliptical trainer could be used to alter their running pattern to that of a midfoot strike runner. Their results were compared to subjects who ran on a non-modified elliptical trainer. After training on the modified elliptical trainer, subjects demonstrated a decrease in foot angle at initial contact when attempting to run with a midfoot strike. Training did not affect all kinetic metrics or stride frequency. However, …

Stride Length-Speed Relationship During Body Weight Supported Running, Carmen Chona

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to determine if body weight support influences the stride length-speed relationship. Additionally, the purpose was to determine if impact characteristics of running are influenced by body weight support and speed. Subjects (n=10; 6 female, 4 male) volunteered to participate in this study. All subjects were injury free and were comfortable running on a treadmill for 30 minutes. Subjects ran on a lower body positive (LBPP, Alter-G, G-Trainer) treadmill for 4 conditions of body weight (100, 40, 30 and 20% of body weight) and 4 running speeds (100, 110, 120 and 130% of the preferred …

Effects Of Footstrike Pattern On Low Back Posture, Shock Attenuation, And Comfort During Running, Traci L. Delgado, Emilia Kubera-Shelton, Robert R. Robb

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: Barefoot running (BF) is popular in the running community. Biomechanical changes occur with BF, especially when initial contact changes from rearfoot strike (RFS) to forefoot strike (FFS). In addition, changes in lumbar spine range of motion (ROM), particularly involving lumbar lordosis, have been associated with increased low back pain (LBP). However it is not known how changing from RFS to FFS affects lumbar lordosis or LBP. Thus, the purpose of this study was to determine if a change from RFS to FFS would change lumbar lordosis, and/or decrease shock attenuation, and/or change comfort levels in healthy recreational/experienced runners.

Methods: …

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 …

Frontal Plane Pelvic Drop In Runners: Causes And Clinical Implications, Evie Neff Burnet

Theses and Dissertations

Running is becoming an increasingly popular sport; however, runners have a high rate of injury and are therefore often treated in the orthopedic or sports medicine setting. One current focus of these patients' treatment is gluteus medius muscle (GM) strengthening and gait retraining, with the goal of decreasing frontal plane pelvic drop. Unfortunately, there is a research void assessing the role of GM function on pelvic drop, and the effect of an increased pelvic drop on running performance. The specific aims of this research were to investigate a link between frontal plane pelvic drop and (1) isometric GM torque, (2) …

The Effect Of Three Foot Orthoses On Plantar Pressure Under The First Metatarsophalangeal Joint Of Pes Planus Foot Type During Standing And Slow Running, Lacey Ann Nordsiden

Human Movement Sciences & Special Education Theses & Dissertations

The purpose of this study was to examine the effect of three different foot orthoses on plantar pressure under the first metatarsophalangeal joint during standing and slow running. Twenty physically active participants, 12 males (19.7±1.3 years, 181.5±6.3cm, 83.6±12.3kg) and 8 females (20.8±1.5 years, 172.7±11.2cm, 69.9±14.2kg) with navicular drop greater than 10mm, no history of surgery to the lower extremity, and no history of pain or injury to the 1st metatarsophalangeal joint in the past six months volunteered for the study. Each subject performed standing and slow running tasks with four different orthosis conditions: no orthosis, metatarsal dome, U-shaped orthosis, and …

An Electromyographic And Video Motion Analysis Study Of Sprinters At Varying Speeds And Inclines, Christine Ann Rygh

Physical Therapy Scholarly Projects

Athletes desire to succeed in their respective sport. Several training programs claim to enhance athletic performance by loading specific muscles and joints needed for increased speed, power, and strength in a sport specific manner. One such training regimen is the Frappier Acceleration® program, in which the core element involves sprinting on a treadmill at varying speeds and inclines. The purpose of this study is to describe muscle activity and joint motion while running on a treadmill at different speeds and inclines.

Eleven males between the ages of eighteen and twenty-two years of age ran on a treadmill at five different …

An Electromyographic And Video Motion Analysis Study Of Sprinters At Varying Speeds And Inclines, Marc Sondreal

Physical Therapy Scholarly Projects

Athletes desire to succeed in their respective sport. Several training programs claim to enhance athletic performance by loading specific muscles and joints needed for increased speed, power, and strength in a sport specific manner. One such training regimen is the Frappier Acceleration® program, in which the core element involves sprinting on a treadmill at varying speeds and inclines. The purpose of this study is to describe muscle activity and joint motion while running on a treadmill at different speeds and inclines.

Eleven males between the ages of eighteen and twenty-two years of age ran on a treadmill at five different …

An Electromyographic And Video Motion Analysis Study Of Sprinters At Varying Speeds And Inclines, Jeremy Zimney

Physical Therapy Scholarly Projects

Athletes desire to succeed in their respective sport. Several training programs claim to enhance athletic performance by loading specific muscles and joints needed for increased speed, power, and strength in a sport specific manner. One such training regimen is the Frappier Acceleration® program, in which the core element involves sprinting on a treadmill at varying speeds and inclines. The purpose of this study is to describe muscle activity and joint motion while running on a treadmill at different speeds and inclines.

Eleven males between the ages of eighteen and twenty-two years of age ran on a treadmill at five different …

An Electromyographic And Video Motion Analysis Study Of Elite Sprinters At Varying Speeds And Inclines, Samantha Gould

Physical Therapy Scholarly Projects

Every athlete trains with the hopes of being bigger, stronger or faster than the competitor. Athletes are eager to jump on the "bandwagon" of new training techniques that claim to produce the results the athlete seeks. One such training technique is sprinting on a treadmill at high speeds and inclines. The purpose of this study is to describe muscle activity and joint motion while running on a treadmill at different speeds and inclines.

Six males between the ages of 21 and 27 years of age ran at 20 miles per hour and 0% grade and at 13 miles per hour …

An Electromyographic And Video Motion Analysis Study Of Elite Sprinters At Varying Speeds And Inclines, Anna Hillig

Physical Therapy Scholarly Projects

Every athlete trains with the hopes of being bigger, stronger or faster than the competitor. Athletes are eager to jump on the "bandwagon" of new training techniques that claim to produce the results the athlete seeks. One such training technique is sprinting on a treadmill at high speeds and inclines. The purpose of this study is to describe muscle activity and joint motion while running on a treadmill at different speeds and inclines.

Six males between the ages of 21 and 27 years of age ran at 20 miles per hour and 0% grade and at 13 miles per hour …

An Electromyographic And Video Motion Analysis Study Of Elite Sprinters At Varying Speeds And Inclines, Carrie Anderson

Physical Therapy Scholarly Projects

Every athlete trains with the hopes of being bigger, stronger or faster than the competitor. Athletes are eager to jump on the "bandwagon" of new training techniques that claim to produce the results the athlete seeks. One such training technique is sprinting on a treadmill at high speeds and inclines. The purpose of this study is to describe muscle activity and joint motion while running on a treadmill at different speeds and inclines.

Six males between the ages of 21 and 27 years of age ran at 20 miles per hour and 0% grade and at 13 miles per hour …

An Electromyographic And Video Motion Analysis Study Of Elite Sprinters At Varying Speeds And Inclines, Teri Parker

Physical Therapy Scholarly Projects

Every athlete trains with the hopes of being bigger, stronger or faster than the competitor. Athletes are eager to jump on the "bandwagon" of new training techniques that claim to produce the results the athlete seeks. One such training technique is sprinting on a treadmill at high speeds and inclines. The purpose of this study is to describe muscle activity and joint motion while running on a treadmill at different speeds and inclines.

Six males between the ages of 21 and 27 years of age ran at 20 miles per hour (mph) and 0% grade and at 13 miles per …

An Electromyographic And Video Motion Analysis Study Of Elite Sprinters At Varying Speeds And Inclines, Erica Fretland

Physical Therapy Scholarly Projects

Background and Purpose: The purpose of this study is twofold 1) to describe muscle activity and joint motion while running on a treadmill at different speeds and inclines and 2) to examine whether or not running on a treadmill at high speeds and on an inline causes particular muscles to work harder or the sprinter to change their running technique to accommodate the increased workload.

Subjects and Methods: EMG and motion analysis data was collected from six subjects while they were running on a treadmill, first at twenty miles per hour at zero percent grade and then at thirteen miles …