Medicine and Health Sciences Commons^™

Electromyographic (Emg) Activity Of The Gluteus Medius During Various Hip Exercises, Kalie Maiden, Mitchell Karbo, Taylor Doeden, Analise Richtsmeier

Physical Therapy Scholarly Projects

Background and Purpose. The purpose of the study was to record and analyze muscle recruitment patterns of the gluteus medius and gluteus maximus muscles when performing a side lying abduction exercise requiring consistent force to roll a ball up and down the wall using the dominant lower extremity. Comparisons were made between the use of either a small, medium or large ball. The subjects performed a standing abduction exercises with theraband around both ankles as well.

Case Description. Fifteen subjects were recruited from the University of North Dakota Department of Physical Therapy to perform the four different types of exercises. …

Electromyographic Analysis Of Hip Muscle Activity Comparing Maximal Voluntary Contraction To Manual Muscle Test Grades, Ty Bommersbach, Anthony Charbonneau,, Holly Koch, Braidy Solie

Physical Therapy Scholarly Projects

Introduction: The purpose of this study was to investigate the relationship between muscle activity during three manual muscle tests (MMT) and muscle activity during a maximal voluntary contraction (MVC) of the same muscle.

Subjects: Eleven female subjects voluntarily participated in this study. All participants were physical therapy students under the age of 30, nonpregnant, and without recent history of musculoskeletal injury.

Methods: Electromyographic (EMG) data was collected by placing surface electrodes over each participant's right tensor fasciae latae (TFL) and gluteus medius (GM) muscle. The EMG data from each muscle was transmitted by Noraxont TeleMy02400 G2 telemetry …

Electromyographic Analysis Of Hip Muscle Activity During Stair Climbing: A Pilot Study, Alexander Barney, Mary Loken, Paige Torgerson, Lyndsey Wunderlich

Physical Therapy Scholarly Projects

Introduction: Prior to this study, little evidence exists for a quality predictive tool correlating maximum velocity contraction (MVC) strength of the hip abductor muscles to walking and stair climbing (ascending/descending, side-stepping) ability. Stair climbing is an important functional activity of daily living and as physical therapists we are involved in training clients to ascend/descend stairs safely, which can be difficult for clients with hip abductor muscle weakness. Subjects: Eleven females voluntarily agreed to participate in this study. All participants were under the age of 30 years old, nonpregnant, physical therapy students without a current musculoskeletal injury. Methods: …

Electromyographic Analysis Of Sit To Stand Dependent Transfers With And Without Education On Lifting Technique, Jordan Braun, Samantha Stegman, Alex Wohl

Physical Therapy Scholarly Projects

PURPOSE: The purpose of this study was to assess if there was a change in electromyography (EMG) activity in the back or leg muscles when performing a dependent sit-to-stand lift before and after a brief proper lifting intervention.

SUBJECT: The subjects in this study included 10 female third-year doctoral physical therapy students from the University of North Dakota that were all in good health with no significant pathology of either their backs or lower extremities.

INSTRUMENTATION: The EMG activity was recorded by the Noraxon ™ TeleMyo 2400R G2 transmitter and a TeleMyo 2400 SG150 unit. Knee flexion …

An Electromyographic Study Of Hip Muscle Activity In Varying Subtalar Joint Positions: Implications For Anterior Cruciate Ligament Injury Risk, Holly Augustine, Allison Biwer, Greg Jorgensen, Mitch Kary

Physical Therapy Scholarly Projects

Purpose: The purpose of this study is to determine if subtalar joint position affects the activity of hip musculature in static standing, and by those results imply a correlation between foot position and ACL injury risk.

Methods: Thirty participants took part in this randomized study in which EMG data were collected during 3 trials of 3 subtalar joint positions on the right lower extremity. Subtalar joint positions included a flat surface to represent a neutral subtalar position, a 5-degree incline rising from lateral to medial, promoting a supinated attitude of the foot, and the third position was on a 5- …

Electromyographic Analysis Of Lower Extremity Muscle Activity During Wall Squats With An Adduction Contraction In Varied Foot Positions, Jill Eken, Ashlee Jesperson, Heather Sletten

Physical Therapy Scholarly Projects

Purpose: The purpose of this study was to determine if an isometric hip adduction contraction and varied foot positions during a wall squat results in increased muscle recruitment of the lower extremity.

Subjects: Eleven healthy female adult volunteers without a prior history of knee pathology participated.

Methods: Surface electromyography (EMG) data were collected from the adductor longus (AL), vastus medialis oblique (VMO), vastus lateralis (VL), biceps femoris (BF), gastrocnemius (GN) and anterior tibialis (AT) muscles of the dominant leg for each individual during six wall squats with different treatment conditions. Experimental trials included three different rotation positions with or without …

Muscle Activation During Simulated Patient Transfers: Preliminary Study Of Experienced Versus Novice Patient Handlers, Benjamin Mitchell, Patrick Septon

Physical Therapy Scholarly Projects

Purpose: Back injuries are a common problem in providing health care and manually transferring patients can be a cause of back injuries. Because of this fact, there has been a need for research looking into safe methods for manually transferring patients. The intent of this study was to compare muscle recruitment patterns of novice and experienced health care professionals during a simulated patient transfer. By comparing the muscle activity of the experienced group to that of the novice group, we hoped to see differences that could be used to refine training techniques, thus increasing the safety of novice health care …

Electromyographic (Emg) Analysis Of Trunk Muscles At The Point Of Puck Contact During Slap And Wrist Shots Of Female Ice Hockey Athletes, Lon Donald, Kristi Kjellgren, Jodi Young, Michael Young

Physical Therapy Scholarly Projects

The number of female hockey players has increased significantly in the last decade. The first recorded female hockey game was in Ottawa in 1889. Since that time, hockey has spread into the United States .. Today, USA Hockey, Inc. reports 40,000 registered females and the Canadian Hockey Association has 55,000 female hockey players. Despite the rising popularity of the sport among females, there is little research specifically related to female hockey players.

Golf, tennis, and hockey swings utilize similar rotational components about the trunk. Trunk rotation is controlled and produced by the erector spinae, external oblique and rectus abdominus muscles. …

An Electromyographic Study Of Lower Trapezius Muscle Activity During The Traditional Muscle Testing Position And A Modified Position, Keri M. Doyle, Molly E. Mcdonald, Heather M. Partlow, Eric R. Paur

Physical Therapy Scholarly Projects

Many people use repeated overhead movements in their occupations or recreational activities. Literature has shown that this repeated overhead activity greatly contributes to the incidence of shoulder pathologies such as impingement syndrome. The purpose of this study was to establish whether the lower trapezius was more successfully recruited in the traditional muscle testing position of 145° of shoulder abduction or a modified position consisting of shoulder external rotation while in 80° of shoulder abduction and 90° of elbow flexion.

Forty-one subjects between the ages of 21 and 45 voluntarily participated in this study. One subject was excluded due to exceeding …

The Effects Of Torque Production Using A Stationary Hand-Held Dynamometer On Different Points Of The Forearm When Manual Muscle Testing Elbow Flexors, Justin Allred, Ross Homstad, Eugene Monette

Physical Therapy Scholarly Projects

Muscle testing using a stationary dynamometer has given therapists a more objective method of assessing a patient's strength. However, few studies have been performed as to the effects that dynamometer placement has on force production.

The purpose of this randomized, repeated measure study was to determine whether there was a significant difference in reliability between torque measurements with dynamometer placement at two well-defined points on the forearm. The differences in torque values from the two points of application (distal wrist crease and the midpoint of the forearm) were also compared to assess for differences between these values.

Thirty-two healthy subjects …

A Comparison Of Isokinetic Ankle Plantarflexion Force Generation In Knee Flexed And Knee Extended Positions, Reyn Hata, Delbert Peralta, Daniel Uyeunten

Physical Therapy Scholarly Projects

The triceps surae, composed of the soleus and the two heads of the gastrocnemius, is a very active muscle in all activities involving the lower extremities. This study compared the maximal force generated by these ankle plantarflexors in a knee extended and knee flexed position to determine relative contribution to plantarflexion force in varying positions. Eighteen male and female college students were tested for maximal concentric plantarflexor force generation isokinetically at 3D/sec in both positions. Means of maximal force in knee extension and flexion, 242.56 Ibs. and 227.22 Ibs., respectively, were found to be statistically significantly different. The mean of …

Electromyographic Analysis Of Lower Extremity Muscle Activity During Plyo Press Jump And A Vertical Jump, Leigh James Griffith, Kristen Michelle Olson, Daniel Kenneth Sinness, Steven Peter Thomas

Physical Therapy Scholarly Projects

Many training programs have been developed to aid in training the athlete with their goal of maximizing strength and performance. The Plyo Press machine was developed for training athletes enrolled in the Frappier Sports Acceleration Program. This machine was designed to couple strength training with plyometrics to enhance dynamic muscle activity and speed.

There has been limited research on the Plyo Press machine to support these claims. Therefore, the purpose of our study was to compare muscle recruitment during a vertical floor jump versus a plyojump in the Ply Press leg machine. EMG analysis of selected lower extremity muscles was …

Emg Analysis Of Lower Extremity Muscle Activity During Wall Slides With Varying Foot Positions, Jon Beach, Neil Feist, Mike Hiscock, Ryan Stromme

Physical Therapy Scholarly Projects

Knee injuries are among the most common injuries seen in a physical therapy clinic. Nearly all rehabilitation programs following a knee injury involve quadriceps muscle strengthening. One popular and safe method of quadriceps strengthening often used is the wall slide. There is, however, debate and little research indicating whether or not changing the foot position used during wall slides alters the muscle activity during this exercise.

The purpose of this study was to provide a better understanding of the muscle activity during wall slides with feet in various positions so that more accurate rehabilitation protocols may be developed in the …

Electromyographic And Motion Analysis Of The Trunk And Lower Extremity Muscle Recruitment Comparing A Maximal Voluntary Contraction To The Plyo Press And Agaton Max Series Leg Press, Lee Nagle, Thayne Bosh, Tonya Kunze, Kelly Jorschumb

Physical Therapy Scholarly Projects

Numerous studies have been done on the Plyo Press, with focus on the concentric phase of the exercise. However, for athletes eccentric training has always been a topic of interest. Most leg press machines have a concentric and an eccentric phase involved with the exercise. However, during the eccentric phase of the leg press the muscles are underloaded because of the force-velocity relationship of the human skeletal muscle and the fact that eccentric contractions require fewer motor units for the same force and workload. This means that the leg press exercise is limited by the concentric phase. A new machine …

An Emg & Motion Analysis Study Of The Elliptical Trainer, Chris Hansen, Jaime Horner, Filip Johnson, Emily Wolkomir

Physical Therapy Scholarly Projects

Background and Purpose

The purpose of this study is to describe lower extremity muscle activity and joint range of motion while moving both forward and backward on an elliptical trainer at minimum and maximum inclines.

Subjects

Ten healthy subjects (7 female and 3 male) gave informed consent to voluntarily participate in this study.

Methods

A single group experimental design was used. A maximum contraction was performed for comparison measure and electromyographic (EMG) data was collected while the subjects performed the stride at the specified variables.

Results

The vastus lateralis was the most active of all the muscles throughout the entire …

Analysis Of Wrist And Elbow Muscle Activity In Compound Versus Traditional Bows With Experienced Archers, Jesse Fuhrer

Physical Therapy Scholarly Projects

Archery is becoming more popular as a recreational sport, so it is likely that physical therapists will be seeing more archery-related injuries and will need to know how to treat these athletes. Few studies available specify which muscles are used when shooting compound or traditional bows. The purpose of this study is to identify the muscles around the wrist and elbow that are recruited from draw to release, the specific timing of this recruitment, and the differences in recruitment and muscle activity when using a compound bow compared to a traditional bow.

Six males between the ages of 37 and …

Analysis Of Wrist And Elbow Muscle Activity In Compound Versus Traditional Bows With Experienced Archers, Stacey Fuhrer

Physical Therapy Scholarly Projects

Archery is becoming more popular as a recreational sport, so it is likely that physical therapists will be seeing more archery-related injuries and will need to know how to treat these athletes. Few studies available specify which muscles are used when shooting compound or traditional bows. The purpose ofthis study is to identify the muscles around the wrist and elbow that are recruited from draw to release, the specific timing ofthis recruitment, and the differences in recruitment and muscle activity when using a compound bow compared to a traditional bow.

Six males between the ages of 37 and 51 were …

An Electromyographic And Motion Analysis Study Of An Elliptical Trainer, Sarah Mannel

Physical Therapy Scholarly Projects

Americans are increasingly interested in exercising to increase fitness and reduce the risks of disease. One of the latest machines used to accomplish this goal is the elliptical trainer, a combination stair stepper, treadmill, exercise cycle, and cross-country ski machine. The purpose of this study was to describe muscle activity and joint range of motion while moving both forward and backward on an elliptical trainer at different inclines.

Six subjects between the ages of twenty-two and twenty-five years rode an elliptical trainer backwards and forwards at different inclines for four trials. Electromyographic activity of eight lower extremity muscles was calculated …

An Electromyographic And Motion Analysis Study Of An Elliptical Trainer, Kristin Sweeney

Physical Therapy Scholarly Projects

Americans are increasingly interested in exercising to increase fitness and reduce the risks of disease. One of the latest machines used to accomplish this goal is the elliptical trainer, a combination stair stepper, treadmill, exercise cycle, and cross-country ski machine. The purpose of this study was to describe muscle activity and joint range of motion while moving both forward and backward on an elliptical trainer at different inclines.

Six subjects between the ages of twenty-two and twenty-five years rode an elliptical trainer backwards and forwards at different inclines for four trials. Electromyographic activity of eight lower extremity muscles was calculated …

An Electromyographic And Motion Analysis Study Of An Elliptical Trainer, Jennifer Tveit

Physical Therapy Scholarly Projects

Americans are increasingly interested in exercising to increase fitness and reduce the risks of disease. One of the latest machines used to accomplish this goal is the elliptical trainer, a combination stair stepper, treadmill, exercise cycle, and cross-country ski machine. The purpose of this study was to describe muscle activity and joint range of motion while moving both forward and backward on an elliptical trainer at different inclines.

Six subjects between the ages of twenty-two and twenty-five years rode an elliptical trainer backwards and forwards at different inclines for four trials. Electromyographic activity of eight lower extremity muscles was calculated …

An Electromyographic Study Of Lower Trapezius Muscle Activity During Exercise In Traditional And Modified Positions, Rebecca Lee. Johnson

Physical Therapy Scholarly Projects

Shoulder rehabilitation commonly overlooks the influence of scapular muscles in providing the stability necessary for the shoulder to function properly. When considering muscles acting on the scapulothoracic articulation, literature suggests that the lower trapezius is a key stabilizer of this articulation. Traditionally, the lower trapezius is exercised while the patient is in a prone position with the humerus abducted 1450 while performing forward elevation. Unfortunately, repeated overhead activity has been proven to increase the incidence of shoulder impingement. In an effort to avoid exercising the lower trapezius in a position that would compromise the shoulder complex, a modified position of …

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 …

Quadriceps And Hamstring Strength In Individuals With Total Knee Arthroplasty, Brooke J. Powers

Physical Therapy Scholarly Projects

Currently, there are over 120,000 total knee arthroplasties (TKA) performed yearly in the United States with total hospital and physician expenses for each procedure ranging from $25,000 to $30,000. Majority of individuals who undergo a TKA continue to exhibit lower extremity strength deficits specifically quadriceps and hamstring weakness. Clinicians and physical therapists question if these individuals receive the level of rehabilitation necessary for the return of quadriceps and hamstring strength.

The purpose of this pilot study was to investigate the logistics of setting up a study to determine if there was a significant difference between the strength of the involved …

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 Study Of Lower Trapezius Muscle Activity During Exercise In Traditional And Modified Positions, Erika Engelstad

Physical Therapy Scholarly Projects

Shoulder rehabilitation commonly overlooks the influence of scapular muscles in providing the stability necessary for the shoulder to function properly. When considering muscles acting on the scapulothoracic articulation, literature suggests that the lower trapezius is a key stabilizer of this articulation. Traditionally, the lower trapezius is exercised while the patient is in a prone position with the humerus abducted 1450 while performing forward elevation. Unfortunately, repeated overhead activity has been proven to increase the incidence of shoulder impingement. In an effort to avoid exercising the lower trapezius in a position that would compromise the shoulder complex, a modified position of …

A Comparison Of The Maximal Torque Production Of The Quadriceps Muscle During Morning And Afternoon Strength Assessment, Shawn Dockter

Physical Therapy Scholarly Projects

The purpose of this study was to compare maximal quadriceps torque production between morning (AM) and afternoon (PM) hours. Thirty healthy male subjects between the ages of 21 and 43 were tested during an AM and PM session on the Kin-Com dynamometer. Six concentric isokinetic contractions of the right quadriceps were tested at a speed of 60° Is. The maximal peak torque measurements were compared between the AM and PM sessions to establish the validity of results taken at differing times of day. No significant difference in strength assessment due to time of day was found. The data collected in …

An Electromyographic Study Of The Effects Of Plyometric Training Shoes On The Lower Extremity, Brian T. Laumb

Physical Therapy Scholarly Projects

Background and Purpose: Plyometric shoes have recently been introduced as an effective training tool to enhance several aspect of an athlete's ability, including vertical jump. The SkyFlex® system utilizes plyomteric training shoes in conjunction with plyometric exercises and drills to achieve maximum athletic performance. There is currently limited research to validate the manufacturer's claims of increasing vertical jump. The purpose of this study is twofold: l)To describe muscle activity during walking and jumping while wearing traditional athletic shoes and plyometric training shoes. 2)To measure the vertical jump of subjects trained with plyometric training shoes and a control group of subjects …

A Comparison Of The Maximal Torque Production Of The Quadriceps Muscle During Morning And Afternoon Strength Assessment, Shawn Mccoul

Physical Therapy Scholarly Projects

The purpose of this study was to compare maximal quadriceps torque production in early morning hours to afternoon hours. Thirty male subjects volunteered to participate in this study and were randomly assigned to an AM or PM testing session. At least one week after the first test, the subjects completed a similar test in the opposite time slot. Each subject was positioned on the Kin-Com (Chattecx Corp., Chattanooga, 'IN) dynamometer and performed six maximal concentric isokinetic repetitions of knee extension at 600/s between the ROM of 10° and 80° of knee flexion. The AM/PM ratios indicated no significant difference between …

An Electromyographic Study Of The Effects Of Plyometric Training Shoes On The Lower Extremity, Heather Phillips

Physical Therapy Scholarly Projects

Background and Purpose: Plyometric shoes have recently been introduced as an effective training tool to enhance several aspect of an athlete's ability, including vertical jump. The SkyFlex® system utilizes plyomteric training shoes in conjuction with plyometric exercises and drills to achieve maximum athletic performance. There is currently limited research to validate the manufacturer's claims of increasing vertical jump. The purpose of this study is twofold: l)To describe muscle activity during walking and jumping while wearing traditional athletic shoes and plyometric training shoes. 2)To measure the vertical jump of subjects trained with plyometric training shoes and a control group of subjects …