We are sorry, but NCBI web applications do not support your browser, and may not function properly. More information here ... Trunk muscle activity during lumbar stabilization exercises on both a stable and unstable surface. Source Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Ibaraki, Japan. Abstract STUDY DESIGN: OBJECTIVES: To clarify whether differences in surface stability influence trunk muscle activity. BACKGROUND: Lumbar stabilization exercises on unstable surfaces are performed widely. One perceived advantage in performing stabilization exercises on unstable surfaces is the potential for increased muscular demand. However, there is little evidence in the literature to help establish whether this assumption is correct. METHODS: Nine healthy male subjects performed lumbar stabilization exercises. Pairs of intramuscular fine-wire or surface electrodes were used to record the electromyographic signal amplitude of the rectus abdominis, the external obliques, the transversus abdominis, the erector spinae, and lumbar multifidus. Five exercises were performed on the floor and on an unstable surface: elbow-toe, hand-knee, curl-up, side bridge, and back bridge. The EMG data were normalized as the percentage of the maximum voluntary contraction, and data between doing each exercise on the stable versus unstable surface were compared using a Wilcoxon signed-rank test. RESULTS: With the elbow-toe exercise, the activity level for all muscles was enhanced when performed on the unstable surface. When performing the hand-knee and side bridge exercises, activity level of the more global muscles was enhanced when performed on an unstable surface. Performing the curl-up exercise on an unstable surface, increased the activity of the external obliques but reduced transversus abdominis activation. CONCLUSION: This study indicates that lumbar stabilization exercises on an unstable surface enhanced the activities of trunk muscles, except for the back bridge exercise. Publication Types MeSH Terms Full Text Sources Supplemental Content Related citations Effects of specific exercise instructions on abdominal muscle activity during trunk curl exercises. Core muscle activation during Swiss ball and traditional abdominal exercises. Escamilla RF, Lewis C, Bell D, Bramblet G, Daffron J, Lambert S, Pecson A, Imamura R, Paulos L, Andrews JR. J Orthop Sports Phys Ther. 2010 May; 40 (5) :265-76. Trunk muscle activity in healthy subjects during bridging stabilization exercises. Stevens VK, Bouche KG, Mahieu NN, Coorevits PL, Vanderstraeten GG, Danneels LA. BMC Musculoskelet Disord. 2006 Sep 20; 7:75. Epub 2006 Sep 20. Electromyographic activity of selected trunk muscles during stabilization exercises using a gym ball. Review Postoperative rehabilitation following lumbar discectomy with quantification of trunk muscle morphology and function: a case report and review of the literature. Hebert JJ, Marcus RL, Koppenhaver SL, Fritz JM. J Orthop Sports Phys Ther. 2010 Jul; 40 (7) :402-12. Recent activity Trunk muscle activity during lumbar stabilization exercises on both a stable and unstable surface. Simple NCBI Directory Getting Started Resources Popular Featured NCBI Information
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