Medicine and Health Sciences Commons^™

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 …