Medicine and Health Sciences Commons^™

Emg Analysis Of Latissimus Dorsi, Middle Trapezius, And Erector Spinae Muscle Activity During Spinal Rotation: A Pilot Study, Alyssa Wagner, Brandon Forister, Zachary Huot

Physical Therapy Scholarly Projects

Purpose/Hypothesis: Rotation of the spine is a common movement used to complete daily activities and participate in sports. As a contributing factor to back injuries, the performance of spinal rotation is an important consideration for the rehabilitation of current and prevention of future back injuries. Muscles involved in spinal rotation have been researched, though limited findings exist for one of the largest back muscles, the Latissimus Dorsi (LD). The LD muscle contributes to many movements of the trunk and limbs given its multiple attachment sites including the pelvis, ribs, scapula, and humerus. Influence of the LD on spinal rotation has …

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 Activity Of Hamstrings And Quadriceps Muscle During Jumping And Landing: Pilot Study, Jayla Greene, Brecca Wahlund, Jay Mittlieder, Adam Lutz

Physical Therapy Scholarly Projects

Background and Purpose. The purpose of this pilot study was to see if there was a difference in amount of electromyographic (EMG) activity in the quadriceps (vastus medialis and vastus lateralis) compared to amount of EMG activity in the hamstrings (biceps femoris and semitendinosus) in active male and female subjects during vertical jumping and landing. In addition, we looked at the amount of knee flexion that occurred in the male and female subjects shortly after landing from a vertical jump.

Methods EMG activity was recorded using a Noraxon TeleMyo DTS telemetry unit with a sampling rate of 1 kHz. EMG …

Emg Analysis Of Latissimus Dorsi, Erector Spinae, And Middle Trapezius Muscle Activity During Spinal Rotation: A Pilot Study, Hunter Huberty, Jacob Klingbeil, Michael Miller, Michael Utt

Physical Therapy Scholarly Projects

Purpose/Hypothesis: Rotation of the spine is a common movement used for completing daily activities and participating in sports. As a contributing factor to back injuries, the performance of spine rotation is an important consideration for the rehabilitation and prevention of future back injury. Muscles involved in spine rotation have been researched, though limited findings exist for one of the largest back muscles: Latissimus Dorsi (LD). The LD muscle contributes to many movements of the trunk and limbs given its multiple attachment sites including the pelvis, scapula, ribs and humerus. Influence of the LD on spine rotation, however, has not …

Electromyographic Activity Of Hamstrings And Quadriceps Muscles During Jumping And Landing: Pilot Study, Joseph Burckhard, Tyler Kemnitz, Mikaela Dick, Alexandria Sweeney

Physical Therapy Scholarly Projects

Background and Purpose. The purpose of this pilot study was to find if there was a difference in the activation and firing time of the quadriceps (vastus medialis and vastus lateralis) compared to activation times of the hamstrings (biceps femoris and semitendinosus) in active males and females.

Methods. Subjects consisted of two male and two female athletes in good physical condition with no previous knee pathologies. During each of the trials, the muscle activity of each muscle was recorded. The EMG activity recorded using a Noraxon TeleMy02400 G2 telemetry unit with a sampling rate of 1 kHz which …

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: …

Emg Analysis Of Latissimus Dorsi, Erector Spinae And Middle Trapezius Muscle Activity During Spinal Rotation: A Pilot Study, Jamie Flint, Toni Linneman, Rachel Pederson, Megan Storstad

Physical Therapy Scholarly Projects

Purpose/Hypothesis: Rotation of the spine, a complex movement that has yet to be fully understood, occurs regularly in activities of daily living (ADLs) and sport performance. Rotation (twisting) of the spine is a contributing factor in low back pain pathology and, by reports, has been associated with up to 60% of all back injuries. One of the largest muscles of the back, the latissimus dorsi (LD), is the only muscle to attach to the spine, pelvis, ribs, scapula, and humerus, and has the potential to impact the spine during many different activities. To date, there is limited research on …

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 …

Ride The Wave: A Guide For Implementing Biofeedback In Occupation-Based Interventions In A Rehabilitation Setting, Sarah Averett, Johanna Meister

Occupational Therapy Capstones

Historical and current research studying EMG biofeedback has shown this method to be an effective adjunct to occupational therapy intervention. Utilizing EMG biofeedback has been shown through research as effective in improving functional gains. The use of biofeedback allows an individual to visualize unseen physiological processes which are unique to each individual and provide better understanding of otherwise unseen functions (Laurenção, Battistella, Moran de Britto, Tsukimoto, & Mayizaki, 2008). An extensive literature review and students’ observations of clinical occupational therapy practice led the investigators to conclude that EMG biofeedback was a viable treatment method which has not been utilized to …

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- …

The Influence Of Partial Body Weight Support On The Muscle Activity In Normal Subjects: On Incline/Decline Surfaces At A Constant Speed, Kristin Citterman, Leanne Gere, Jessica Price, Kayley Uvaas

Physical Therapy Scholarly Projects

Background and Purpose: The purpose of this study was to collect data on the effects of incline and decline surfaces, combined with partial body weight support (PBWS), on muscle activity of the lower extremities during treadmill walking for normal subjects. By collecting lower extremity electromyographical (EM G) data we hope that the information may be applied to the development of treatment alternatives or future research options for patients with both neurological and orthopedic dysfunction.

Methods: Twenty subjects (14 female, 6 male) were recruited for this study. EMG data was collected for lower extremity muscle activity during conditions of level, incline …

Motion Analysis And Electromyographic Analysis Of Ambulation With Assistive Devices, Tracy Foltz, Danielle Jwanouskos, Steven Pederson

Physical Therapy Scholarly Projects

Purpose: The purpose of this study is to analyze the amount of muscle activity of the rectus abdominis and external obliques during the gait cycle with the use of forearm crutches and three different weight bearing statuses. Subjects: Seven female adults were recruited from the University of North Dakota Physical Therapy program. Inclusion criteria: between the ages of 19 and 40 years of age, current physical therapy students, and healthy with no current upper or lower extremity injuries.

Instrumentation: The EMG data was collected by the Noraxon Telemyo 900 telemetry unit and analyzed using the MyoResearch XP software. Six Vicon …

Emg Analysis Of A Hamstring Co-Contraction And Its Effects On Abdominal Strength, Stephanie Rodman, Heather Robbins, Rebecca Thurn

Physical Therapy Scholarly Projects

Background and Purpose: Back pain and instability are common diagnoses treated by physical therapists. Treatment often includes abdominal or core strengthening exercises that act to improve stability about the lumbar spine. Hip flexors prevent the weaker abdominal muscles from working to their full potential and increase the lumbar lordosis placing the spine at risk of injury. Hip extensors work with abdominal muscles to reduce the lumbar lordosis, and restrict the hip flexor activity, allowing a stronger abdominal contraction. The purpose of this study was to determine if a co-contraction of the hamstring muscles during an abdominal crunch increased the electromyographic …

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 …

Electromyographic Analysis Of Abdominal And Low Back Musculature During Use Of An Experimental Stationary Bicycle, Bryce A. Kelly, Christopher L. Podoll, Kirk R. Van Slyke

Physical Therapy Scholarly Projects

Background and Purpose. Currently, stationary bicycles do not incorporate exercise for the abdominal and low back musculature. An experimental stationary bicycle, the Magnus Cycle, has been developed to increase trunk muscle activation and, at the same time, provide aerobic conditioning. The purpose of this study is to assess the activity of the rectus abdominus, external oblique, erector spinae, rectus femoris and biceps femoris muscles during a stationary cycling setting and during a tilt-in-space setting of the Magnus Cycle.

Subjects. Sixteen subjects, both men and women, between the ages of 18 and 30 participated in this study.

Methods. Surface electromyography (EMG) …

An Electromyographic Study Of Upper Trapezius, Lower Trapezius, And Serratus Anterior Muscle Activity During Traditional And Modified Muscle Testing Positions, Jace Everett, Mike Fowler, Jason Haak, Robby Luck

Physical Therapy Scholarly Projects

Purpose: The purpose of this study is to assess the muscle activity of the shoulder joint force couple induced by the upper trapezius, lower trapezius, and serratus anterior to determine if they are more effectively recruited during the traditional exercise position of forward shoulder elevation in 145° of shoulder abduction versus a modified position of shoulder external rotation while in 80° of shoulder abduction and 90° of elbow flexion

Methods: Nine participants took part in this randomized study in which EMG data was collected during 4 exercise trials of 10 repetitions each on the right shoulder. EMG activity was monitored …

An Electromyographic Study Of The Quadriceps And Hamstrings Recruitment During Two Closed Kinetic Chain Activities, Linda K. Hanson, Shauna T. Salz, Suzanne L. Steffes

Physical Therapy Scholarly Projects

Knee pain and injury are a commonly seen diagnosis in physical therapy practice. Closed kinetic chain activities are frequently used to treat these diagnoses, because of their safety and functional properties. However isolation of specific muscles is difficult with closed kinetic chain exercises. The researchers chose to further study closed kinetic chain exercises in order to compare traditional closed kinetic chain exercises with a recently developed closed kinetic chain device. The purpose of this study is to assess EMG activity of the quadriceps and hamstrings during two different closed kinetic chain activities of the knee, one a traditional method and …

An Electromyography (Emg) Study Of Two Dynamic Surfaces: Hippotherapy And Swiss Ball, Melissa J. Metcalf, Roslyn J. Muller, Tanya L. Schimek, Erica H. Wheeler

Physical Therapy Scholarly Projects

The use of horseback riding as a therapeutic intervention has been used since the fifth century, B.C.1 It has been proposed that the physical benefits of horseback riding include: improved posture, balance, muscle strength, decreased spasticity, improved gait patterns, and coordination. Unfortunately, at the current time, hippotherapy, the use of horses in physical therapy intervention, has been poorly documented due to little objective research. The purpose of this study was to provide an objective measure of children's postural muscle activity through the use of electromyography (EMG) and electrogoniometry on two dynamic surfaces. Data was analyzed for differences in postural muscle …

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 …

Electromyographic Analysis Of An Isometric Vastus Medialis Oblique Contraction With Incorporated Adductor Component, Dan Thielen, James Turner

Physical Therapy Scholarly Projects

Knee pathology is a common clinical complaint that may result in diminished function of the affected lower extremity, ultimately leading to atrophy of the vastus medialis oblique (VMO) muscle. The VMO contributes a great deal to the medial tracking mechanism of the patella which is crucial for normal biomechanical function of the knee joint. Effective strengthening of the VMO is a challenging task in physical therapy clinics. The purpose of this study was to determine if it is possible to enhance the muscle activity of the VMO with the addition of an adductor contraction.

Thirty-one subjects between the ages 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 …

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 …

An Electromyographic And Video Motion Analysis Study Of The Drawback And Hold Phases Of Compound Bow Versus A Traditional Bow In Experienced Archers, Jason Brodina

Physical Therapy Scholarly Projects

Background/Purpose: Archery is quickly becoming an increasingly popular sport, with limited research in the training and rehabilitation of archers. The purpose of this study is to identify the major muscles and timing of recruitment during the drawback and hold of a bow, and to determine the presence of differences in this recruitment between a compound and traditional bow.

Subjects/Methods: Seven males between the ages of 36 to 51 years of age completed 6 drawbacks each with a compound bow and a traditional bow. Surface electrodes on the subjects and reflective markers on the bow were used to analyze electromyographic activity …

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 …

An Electromyographic And Video Motion Analysis Study Of The Drawback And Hold Phases Of A Compound Bow Versus A Traditional Bow In Experienced Archers, Andrea L. Vagle

Physical Therapy Scholarly Projects

Background/Purpose: Archery is quickly becoming an increasingly popular sport, with limited research in the training and rehabilitation of archers. The purpose of this study is to identify the major muscles and timing of recruitment during the drawback and hold of a bow, and to determine the presence of differences in this recruitment between a compound and traditional bow.

Subjects/Methods: Seven males between the ages of 36 to 51 years of age completed 6 drawbacks each with a compound bow and a traditional bow. Surface electrodes on the subjects and reflective markers on the bow were used to analyze electromyographic activity …

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 …