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http://dx.doi.org/10.21598/JKPNFA.2017.15.2.167

Effects of Core and Abdominal Muscle Strengthening Exercises on the Muscle Activity in the Lower Extremity on Unexpected Perturbation  

Kim, Do-Yeon (Department of Physical Therapy, Uiduk University)
Kim, Yu-Jin (Department of Physical Therapy, Uiduk University)
Baek, Ji-Hun (Department of Physical Therapy, Uiduk University)
Shin, So-Hui (Department of Physical Therapy, Uiduk University)
Lee, Jung-Min (Department of Physical Therapy, Uiduk University)
Lee, Myoung-Hee (Department of Physical Therapy, Uiduk University)
Publication Information
PNF and Movement / v.15, no.2, 2017 , pp. 167-176 More about this Journal
Abstract
Purpose: This study investigated the effect of core and abdominal muscle-strengthening exercises on muscle activity in the lower extremity on unexpected perturbation. Methods: Twenty subjects were randomly divided into the core exercise group (n=10) or the abdominal muscles strengthening group (n=10). The two groups performed their exercises during three sessions a week for a total of four weeks. The muscle activity in the lower muscles (rectus femoris, biceps femoris, tibialis anterior, gastrocnemius) was assessed using surface electromyography (EMG) and normalized maximal voluntary isometric contraction (MVIC) before and after the exercises. Results: An increase in the tibialis anterior activity after the core and abdominal muscles strengthening exercises was found after four weeks. A significant difference in the pre- and post-exercise was found. The gastrocnemius muscle activity increased in the core exercise group more than the abdominal muscles strengthening group. However, the difference was not significant. Conclusion: The results of this study suggest that the core and abdominal muscles strengthening exercises increased the tibialis anterior muscle activity. It is expected to help make more balance ability that affect who has abdominal muscles weakness.
Keywords
Core exercise; Abdominal muscles strengthening exercise; Muscle activity; Unexpected perturbation;
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