title: Comparison of muscle functions during three contrasting abdominal exercises.
abstract: That different amplitudes of muscle activities during various abdominal exercises not only reflect the inherent differences in motor control but movement speed as well was hypothesized. 20 healthy adults (M age = 23 yr.) performed three exercises that involved varying amounts of trunk control: the partial sit-up, full sit-up, and AbSlide roll. Covariate analyses indicated that the amplitude of muscle activities could be partitioned into three categories: motor control and scaling (speed and amplitude), scaling only, and motor control only. Overall, the AbSlide exercise activated the most amount of muscular activity, followed by the full and partial sit-up exercises. Results are discussed in terms of how the various muscles contribute to motor control and velocity scaling.
authors.affiliation: Department of Physical Therapy, Medical College of Georgia, EC-1342 Augusta, GA 30912, USA. rchong@mcg.edu
authors.forename: Raymond K Y
authors.initials: RK
authors.lastname: Chong
authors.forename: Lee
authors.initials: L
authors.lastname: Bishop
authors.forename: Will
authors.initials: W
authors.lastname: Collins
authors.forename: Ashley
authors.initials: A
authors.lastname: Fielding
authors.forename: Nicole
authors.initials: N
authors.lastname: Knight
mesh_terms: D000009:Abdominal Muscles / Q000502:physiology*; D000328:Adult; D001696:Biomechanical Phenomena; D004576:Electromyography; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology*; D008297:Male; D009046:Motor Neurons / Q000502:physiology; D005082:Physical Exertion / Q000502:physiology; D011930:Reaction Time / Q000502:physiology