Volume 17, Issue 17 (4-2019)                   jsmt 2019, 17(17): 73-82 | Back to browse issues page

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Ilbeigi S, Poorbahram M, Saghebjoo M. The effect of muscle soreness due to the plyometric training on electrical activity of Gastrocnemius muscle after concentric and eccentric contractions in un-trained male. jsmt. 2019; 17 (17) :73-82
URL: http://jsmt.khu.ac.ir/article-1-367-en.html
, silbeigi@birjand.ac.ir
Abstract:   (3708 Views)
Purpose:The aim of this study was to investigate the effect of muscle soreness due to the plyometric exercises on leg muscle EMG activity after concentric and eccentric contractions in untrained people. 20 students from untrained male students (at least 6 months out of practice), were randomly assigned to experimental (n=10) and control (n=10) groups. At  pre-test, surface electromyographic activity of gastrocnemius muscle were recorded using by the Biovision 18 channel device during the both concentric (squat / plantar flexion of the ankle) and eccentric (wirepuller / ankle dorsiflexion) contractions. Then, in order to build muscle soreness, experimental group exerted 10 minutes selected plyometric exercises, while the control group did not have any training. Finally, immediately after protocol training and also after 48 hours the same record was done. Data were analyzed by Dasylab and Matlab software, and the ANOVA Repeated Measure and Bonferroni post hoc also were used for statistical analysis at a significance level of P≤0/05. The results showed that fatigue resulting from plyometric exercises, could have significant reduction in activity of gastrocnemius muscle immediately and 48 hours after exercise during eccentric contraction (P=0/001), while it was not true for concentric. According to the results, the risk of eccentric contraction could be considered for untrained people during training.
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Type of Study: Research | Subject: Special
Received: 2019/10/23 | Accepted: 2019/10/23 | Published: 2019/10/23

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