Physical Therapy Korea (한국전문물리치료학회지)

Korean Research Society of Physical Therapy (한국전문물리치료학회)
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Effects of Lumbar Stabilization on Abdominal Muscles Activity During Double Straight Leg Lowering

  • Ha, Sung-Min (Dept. of Rehabilitation Therapy, The Graduate School, Yonsei University) ;
  • Lee, Won-Hwee (Dept. of Rehabilitation Therapy, The Graduate School, Yonsei University) ;
  • Oh, Jae-Seop (Dept. of Rehabilitation Therapy, The Graduate School, Yonsei University) ;
  • Weon, Jong-Hyuck (Dept. of Rehabilitation Therapy, The Graduate School, Yonsei University) ;
  • Cynn, Heon-Seock (Dept. of Physical Therapy, Hanseo University) ;
  • Kwon, Oh-Yun (Dept. of Physical Therapy, College of Health Science, Yonsei University, Institute of Health Science, Yonsei University)
  • Received : 2007.10.05
  • Accepted : 2007.11.05
  • Published : 2007.11.19
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Abstract

To improve abdominal muscles strengthening, double straight leg lowering (DSLL) has been widely used in physical therapy, fitness program, and athletic program. The purpose of this study was to investigate the effects of the lumbar stabilization maneuver with a pressure biofeedback unit on the muscle activity of rectus abdominis (RA), external oblique (EO), and internal oblique (IO) during DSLL. Fourteen healthy young men were recruited from university population. The electromyography (EMG) activity was recorded from the RA, EO, and IO of both sides. The normalized EMG activity was compared using a paired t-test. The study showed that EMG activity in the RA, EO, and IO was significantly higher during DSLL with lumbar stabilization (DSLL-LS) compared to performed DSLL (p<.05). These results suggest that DSLL-LS is recommended as an effective method for strengthening exercise for the abdominal muscles.

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