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KMID : 1142420200180020223
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PNF and Movement
2020 Volume.18 No. 2 p.223 ~ p.231
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Effects of the Pelvic Control Method on Abdominal Muscle Activity and Lumbopelvic Rotation Angle during Active Straight Leg Raising in Patients with Chronic Low Back Pain
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Kim Dae-Hyun
Park Jin
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Abstract
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Purpose: The purpose of the study was to compare the effects of different methods of pelvic control on abdominal muscle activity and lumbopelvic rotation angle during active straight leg raising (ASLR) in patients with chronic back pain.
Methods: The study participants were patients with low back pain (n = 30). They were instructed to perform ASLR with pelvic control, ASLR with pelvic belt, and ASLR only. Surface electromyography data were collected from the ipsilateral rectus femoris (IRF), ipsilateral internal oblique (IIO), contralateral external oblique (CEO), and ipsilateral rectus abdominal (IRA) muscles, and lumbopelvic rotation angle was measured using a motion analysis device.
Results: Activation of all abdominal muscles was greater in the ASLR with pelvic control group than in the ASLR with pelvic belt and ASLR groups. The lumbopelvic rotation angle was lower in the ASLR with pelvic control group than in the other two groups (p < 0.05).
Conclusion: These results suggest that ALSR with pelvic control is an effective means of increasing abdominal muscle activity and reducing unwanted lumbopelvic rotation in patients with chronic low back pain. Controlling the pelvis using the opposite leg is an effective form of ASLR exercise for patients with chronic low back pain.
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KEYWORD
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Active straight leg raising, Low back pain, Pelvic rotation, Surface EMG
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