Volume 23, Issue 30 (1-2026)
RSMT 2026, 23(30): 45-60 |
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Fadaei M, Anbarian M. Effects Of Quadriceps Muscle Fatigue On Electromyography Activity Of Lower Limb Muscles During Lifting Load. RSMT 2026; 23 (30) :45-60
URL: http://jsmt.khu.ac.ir/article-1-539-en.html
URL: http://jsmt.khu.ac.ir/article-1-539-en.html
Professor, Department of Sport Biomechanics, Faculty of Sport Sciences, Bu-Ali Sina University, Hamedan, Iran. , anbarian@basu.ac.ir
Abstract: (4908 Views)
Background and Aims: The purpose of this study was to evaluate the effect of quadriceps muscle fatigue on electromyographic activity of selected lower limb muscles during lifting loads using different techniques.
Methods: Surface electromyography activity of the rectus femoris, vastus latralis, vastus medialis, biceps femoris, semitendinous, gastrocnemius medialis and tibialis anterior muscles of 20 able-bodied women were recorded before and after the quadriceps muscle fatigue using leg-press movement, squat, stoop and strudel techniques with 20% of body weight. Analysis of Variance with repeated measures was used for data analyses (p<0.05).
Results: After fatigue when lifting the load, the activity of the rectus femoris, vastus medialis, biceps femoris and gastrocnemius medialis in squat and stoop techniques was significantly different compared to before fatigue condition. But no significant difference was observed between the activity of any of the muscles before and after fatigue in the straddle method.
Conclusion: According to the results, it seems that when quadriceps muscle fatigue, the use of straddle technique to lift the load is more appropriate.
Methods: Surface electromyography activity of the rectus femoris, vastus latralis, vastus medialis, biceps femoris, semitendinous, gastrocnemius medialis and tibialis anterior muscles of 20 able-bodied women were recorded before and after the quadriceps muscle fatigue using leg-press movement, squat, stoop and strudel techniques with 20% of body weight. Analysis of Variance with repeated measures was used for data analyses (p<0.05).
Results: After fatigue when lifting the load, the activity of the rectus femoris, vastus medialis, biceps femoris and gastrocnemius medialis in squat and stoop techniques was significantly different compared to before fatigue condition. But no significant difference was observed between the activity of any of the muscles before and after fatigue in the straddle method.
Conclusion: According to the results, it seems that when quadriceps muscle fatigue, the use of straddle technique to lift the load is more appropriate.
Type of Study: Research |
Subject:
sport biomechanic
Received: 2024/10/11 | Accepted: 2025/05/27 | Published: 2026/01/30
Received: 2024/10/11 | Accepted: 2025/05/27 | Published: 2026/01/30
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