| Autor: |
Sergeeva, K. V., Tambovtseva, R. V. |
| Předmět: |
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| Zdroj: |
Human Physiology; Mar2021, Vol. 47 Issue 2, p193-200, 8p |
| Abstrakt: |
This study examined the strength of motor unit (MU) synchronization based on recurrence quantification analysis (RQA) of the surface EMG data during eccentric and concentric contractions of quadriceps muscle at 25, 50, 80 and 100% of maximum voluntary contraction (MVC) for each contraction mode. We found that % determinism (% DET), which is a sensitive variable that is able to detect MU synchronization, was slightly higher during eccentric contractions. It was also found that degree of synchronization decreased with increasing contraction intensity similarly in each contraction mode (p < 0.05). The % DET, calculated during the quantitative analysis of the recurrence plots, showed sensitivity to changes in the mode and intensity of muscle contraction and is appropriate to quantify the strength of MU synchronization. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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