Medicine and Health Sciences Commons^™

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) …

The Effect Of Hamstring Contractions In The Activation Of The Abdominal Muscles During A Standard Abdominal Crunch, Deborah Sue Larson, Barry Pederson, Adam Suedel, Wayne Voth

Physical Therapy Scholarly Projects

Purpose: The purpose of this study was to determine the effect of a hamstring contraction on the abdominal musculature during a standard crunch. Studies in the past have looked at abdominal and core strengthening, exercise equipment, and exercise techniques and their effect on abdominal electromyography (EMG). Few published studies have looked at the effect on the abdominals during a modified crunch, which is a hamstring contraction during a standard crunch.

Methods: Participants (n=30) for this study were between the ages of 18 and 60 with no history of acute or chronic back pain or major abdominal surgery. EMG was used …