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Health Promot Perspect. 2014;4(2): 173-179.
doi: 10.5681/hpp.2014.023
PMID: 25648248
PMCID: PMC4300443
  Abstract View: 1213
  PDF Download: 793

Original Research

Electromyographic Activity of Soleus and Tibialis Anterior Mus­cles during Ascending and Descending Stairs of Different Heights

Ali Eteraf Oskouei, Nehzat Ferdosrad, Iman Dianat, Mohamad Asghari Jafarabadi, Jalil Nazari*

Abstract

Background: The aim of this study was to evaluate the electromyographic (EMG) activity of the two leg muscles (Tibialis anterior [TA] and Soleus [SOL]) during ascending and descending stairs with different heights (10 cm, 15.5 cm and 18 cm). Methods: Eight­een female university students aged between 20 and 36 yr participated in the study. Data were collected using a ME6000 Biomonitor EMG System (revision MT-M6T16-0) and surface electrodes. Results: The EMG activity of the SOL muscle was significantly higher than the TA muscle activity (P = 0.001). Besides, the muscle activity level of the SOL muscle was significantly higher when ascending compared to descending condition (P = 0.001). The stair height had no significant effect of the EMG activity of the two muscles. Conclusion: These findings highlight that the two muscles are not equally affected by the stair height during ascending and descending condition. The results also indicate that there is no preference between different stair heights in terms of muscular ef­fort.
Keywords: Stair height, Stair gait, Electromyographic
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Submitted: 24 Jul 2014
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