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http://dx.doi.org/10.21598/JKPNFA.2018.16.2.295

Differences in the Activation of Abdominal Muscles During Sit-to-Stand between Smokers and Non-smokers  

Yoo, Jong-Hoon (Department of Physical Therapy, Graduate School, Catholic University of Pusan)
Lee, Dong-Rour (Department of Physical Therapy, Good Gang-An Hospital)
Rhee, Min-Hyung (Department of Physical Therapy, Graduate School, Catholic University of Pusan)
Kim, Jong-Soon (Department of Physical Therapy, College of Health Sciences, Catholic University of Pusan)
Publication Information
PNF and Movement / v.16, no.2, 2018 , pp. 295-300 More about this Journal
Abstract
Purpose: This study aimed to determine whether the abdominal muscles, which are the major lumbar stabilizers along with the respiratory muscles, are affected by smoking. We compared abdominal muscle activity between smokers and non-smokers during the sit-to-stand movement. Methods: A total of 28 healthy adult males (14 smokers and 14 non-smokers) in their 20s-30s voluntarily participated in the study. The subjects performed the sit-to-stand movement, and then their abdominal muscle activity was measured. The surface electromyography system was employed to measure the maximal voluntary isometric contraction (MVIC) values of the subjects' rectus abdominis, external oblique abdominal, internal oblique abdominal, and transversus abdominis muscles. Then, the values were quantified into %MVIC. Results: The activity of the rectus abdominis muscle was higher in the smokers than in the non-smokers. Conversely, the activity of the internal oblique abdominal and transversus abdominis muscles, which are deep abdominal muscles, was higher in non-smokers than in smokers, but the difference was not statistically significant. Conclusion: Smoking can inhibit the activity of smokers' deep abdominal muscles and increase the activity of their superficial muscles, thus making it detrimental to their musculoskeletal system.
Keywords
Smoking; Sit-to-stand; Abdominal muscle activation;
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