Sat, Apr 1, 2023
Volume 12, Issue 4 (Autumn-In-Press 2022)
PTJ 2022, 12(4): 0-0 |
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Seyedi M, Torkaman M, Soleyman Fallah M, Khezri D, Ashrostaghi M. The Effect of Core Fatigue on Lower Extremity Kinematic Variables During Squats in Female Body Builders. PTJ 2022; 12 (4)
URL: http://ptj.uswr.ac.ir/article-1-560-en.html
URL: http://ptj.uswr.ac.ir/article-1-560-en.html
Mohammadreza Seyedi * 
1, Maryam Torkaman2 , Mohammadali Soleyman Fallah3 , Davood Khezri4 , Mojtaba Ashrostaghi4
1, Maryam Torkaman2 , Mohammadali Soleyman Fallah3 , Davood Khezri4 , Mojtaba Ashrostaghi4
1- Department of Sports Medicine ,Sport Sciences Research Institute, Tehran, Iran.
2- Islamic Azad university-Karaj branch, Faculty of Sport sciences and physical education, Karaj, Iran.
3- Sport injuries and corrective exercises Islamic Azad university-Karaj branch, Faculty of Sport sciences and physical education, Karaj, Iran.
4- Sport Sciences Research Institute, Tehran. Iran.
2- Islamic Azad university-Karaj branch, Faculty of Sport sciences and physical education, Karaj, Iran.
3- Sport injuries and corrective exercises Islamic Azad university-Karaj branch, Faculty of Sport sciences and physical education, Karaj, Iran.
4- Sport Sciences Research Institute, Tehran. Iran.
Abstract: (192 Views)
Background: Neuromuscular core muscles fatigue can change the kinematics of the lower extremity and increase risk of lower extremity injuries during squat movement. But it’s unclear how core muscle fatigue can change lower extremity kinematics.
Methods: 16 female athletes entered in this one-group pretest-posttest quasi-experimental study. Subjects performed double leg squats twice before and immediately after the fatigue protocol. Kinematic variables in frontal and sagittal planes were recorded using two digital video cameras with a sampling frequency of 50 Hz and a resolution of 21 megapixels. The obtained data were analyzed for kinematics variables by Quinoa Motion Analysis Software. Paired Sample T-Test was used to compare the results of kinematic variables before and after the fatigue protocol.
Result: The results of this study showed that core muscles fatigue could lead to significantly decreased knee flexion(P=0/001) and increased knee valgus angels during double leg squats movement, but no difference was observed in hip flexion and ankle dorsiflexion before and after the fatigue protocol(P=0/001) .
Conclusion: The results of this study showed that core muscles fatigue could affect the lower extremity alignment negatively and increase the risk of lower extremity injury in female bodybuilders.
Methods: 16 female athletes entered in this one-group pretest-posttest quasi-experimental study. Subjects performed double leg squats twice before and immediately after the fatigue protocol. Kinematic variables in frontal and sagittal planes were recorded using two digital video cameras with a sampling frequency of 50 Hz and a resolution of 21 megapixels. The obtained data were analyzed for kinematics variables by Quinoa Motion Analysis Software. Paired Sample T-Test was used to compare the results of kinematic variables before and after the fatigue protocol.
Result: The results of this study showed that core muscles fatigue could lead to significantly decreased knee flexion(P=0/001) and increased knee valgus angels during double leg squats movement, but no difference was observed in hip flexion and ankle dorsiflexion before and after the fatigue protocol(P=0/001) .
Conclusion: The results of this study showed that core muscles fatigue could affect the lower extremity alignment negatively and increase the risk of lower extremity injury in female bodybuilders.
Type of Study: Research |
Subject:
General
Received: 2023/02/14 | Accepted: 2023/02/26 | Published: 2022/10/20
Received: 2023/02/14 | Accepted: 2023/02/26 | Published: 2022/10/20
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