Rehabilitation and Therapy Commons^™

Effectiveness Of Pressure Biofeedback In Activation Of Transversus Abdominis During The Abdominal Draw-In Maneuver, Jenni L. Freie, Jan L. Kruse, Amanda M. Kvien, Kimberly M. Rzeszutko

Physical Therapy Scholarly Projects

Study Design: Repeated Measures Design.

Objectives: To compare the recruitment of the transversus abdominis and internal oblique during the performance of the supine abdominal draw-in maneuver with the use of pressure biofeedback and without the use of pressure biofeedback. Muscle recruitment will be measured through the use of surface electromyography (EMG).

Background: Surface EMG reliability and validity is reported for transversus abdominis.

Methods: Thirty-nine healthy subjects of the ages 18 to 54 were tested. The subjects were instructed and performed practice trails of the supine draw-in maneuver with and without pressure biofeedback prior to data collection. EMG muscle activity was …

Effect Of Instruction On Emg Activity Of The Rectus Abdominis During A Crunch On A Swiss Exercise Ball, Tina J. Boyer, Suzanne S. Hammer, Tyler L. Jepson, Eric G. Thompson

Physical Therapy Scholarly Projects

Purpose: The purpose of this study was to assess the benefit of instruction from a physical therapist in participant performance of an abdominal crunch on a Swiss ball, determined through electromyography (EMG) of the rectus abdominis.

Subjects: Our subjects included male (n=15) and female (n=15) college students between the ages of 18-50 years old. Exclusion criteria included a history of low back pain, prior spine surgery, pregnancy, previous formal instruction of crunches on a Swiss ball, and an allergic reaction to rubbing alcohol. Instrumentation: EMG biofeedback was used to test rectus abdominis muscle activity. This activity was transmitted by a …