title: Electromyographic examination of selected muscle activation during isometric core exercises.
abstract: OBJECTIVE
  The purpose of the current study was to quantitatively examine the muscle activations of 3 common isometric core exercises (abdominal bridge, single-leg abdominal bridge, and superman) along with a newly introduced isometric exercise (flying squirrel) and determine if muscle activations differed among the exercises.
  
  
  METHODS
  The design was a comparison study.
  
  
  METHODS
  An athletic training classroom laboratory was where all data collections occurred.
  
  
  METHODS
  Thirty healthy collegiate graduate students (age, 23.4 ± 1.4 year; height, 171.3 ± 10.3 cm; mass, 73.3 ± 16.2 kg), regardless of sex, consented to participate.
  
  
  METHODS
  The independent variable was the muscle selected.
  
  
  METHODS
  The main outcome measures or dependent variables were the muscle activation reported as percent of maximum voluntary isometric contraction during each exercise.
  
  
  RESULTS
  Results revealed that the multifidi produced the greatest muscle activity in all exercises, and the single-leg abdominal bridge exercise produced greater muscle activation than the general abdominal bridge exercise (P < 0.025).
  
  
  CONCLUSIONS
  The findings of this study demonstrate that any of these exercises may be a part of a core stability program. In addition, these findings may be incorporated into an isometric core exercise program to supplement a currently implemented isometric core exercise program.
authors.affiliation: Department of Health Science, Kinesiology, Recreation, and Dance, University of Arkansas, Fayetteville, Arkansas, USA.
authors.forename: Gretchen D
authors.initials: GD
authors.lastname: Oliver
authors.forename: Audrey J
authors.initials: AJ
authors.lastname: Stone
authors.forename: Hillary
authors.initials: H
authors.lastname: Plummer
mesh_terms: D000009:Abdominal Muscles / Q000502:physiology*; D000328:Adult; D004576:Electromyography; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000502:physiology*; D055815:Young Adult