Physical Treatments - Specific Physical Therapy
فصلنامه فیزیک درمانی
PTJ
Medical Sciences
http://ptj.uswr.ac.ir
1
admin
2423-5830
2423-5830
10.29252/nrip.ptj
en
jalali
1401
7
1
gregorian
2022
10
1
12
4
online
1
fulltext
en
The Effect of Core Fatigue on Lower Extremity Kinematic Variables During Squats in Female Body Builders
عمومى
General
پژوهشي
Research
<div style="text-align: justify;"><span style="font-size:14px;"><span style="font-family:Tahoma;"><span style="line-height:2;"><span style="unicode-bidi:embed"><strong>Purpose</strong>: Muscle fatigue of the neuromuscular core can change the lower extremity kinematics and increase the risk of lower extremity injuries during squat movement. However, it is unclear how core muscle fatigue can change lower extremity kinematics. <br>
<strong>Methods</strong>: Sixteen female bodybuilders were included in this one-group pre-test-post-test quasi-experimental study. Subjects performed double leg squats twice before and immediately after the core muscles fatigue protocol. Kinematic variables of lower extremity motion in sagittal and frontal planes were recorded using two 21 megapixels digital video cameras with a sampling frequency of 50 Hz. The obtained data were analyzed for kinematics variables by Quinoa Motion Analysis Software. Paired sample t-test was used to compare kinematic variables before and after the fatigue protocol.<br>
<strong>Results</strong>: The results of this study showed that core muscles fatigue can 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).<br>
<strong>Conclusion</strong>: The results showed that core muscle fatigue can negatively affect the alignment of the lower extremity and increase the risk of injury in female bodybuilders. </span><span style="unicode-bidi:embed"> </span></span></span></span></div>
Neuromuscular fatigue, Core stability, Female athletes, Bodybuilding
261
268
http://ptj.uswr.ac.ir/browse.php?a_code=A-10-541-1&slc_lang=en&sid=1
Mohammadreza
Seyedi
seyedi@ssrc.ac.ir
10031947532846009871
10031947532846009871
Yes
Department of Sports Medicine, Sport Sciences Research Institute, Tehran, Iran.
Maryam
Torkaman
torkaman.193maryam@gmail.com
10031947532846009872
10031947532846009872
No
Department of Corrective Exercises and Sport Injuries, Faculty of Sport Sciences and Physical Education, Karaj Branch, Islamic Azad University, Karaj, Iran.
Mohammadali
Soleiman-fallah
seyedi@ut.ac.ir
10031947532846009873
10031947532846009873
No
Department of Corrective Exercises and Sport Injuries, Faculty of Sport Sciences and Physical Education, Karaj Branch, Islamic Azad University, Karaj, Iran.
Davood
Khezri
d.khezri@ssrc.ac.ir
10031947532846009874
10031947532846009874
No
Department of Sports Medicine, Sport Sciences Research Institute, Tehran, Iran.
Mojtaba
Ashroshtaghi
mojtabaashr@yahoo.com
10031947532846009875
10031947532846009875
No
Department of Sports Medicine, Sport Sciences Research Institute, Tehran, Iran.