Comparison of the Maximum Angular Velocity of Lower Limb Joints in Different Methods of Zenkutsu-dachi in Karate
Objective: Proper performance of Dachi in karate as a basic technique has a direct impact on the performance of other techniques. The aim of the present is to compare the maximum angular velocities of the hip, knee and ankle joints under different Zenkutsu-dachi movement patterns in karate athletes....
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| Format: | Article |
| Language: | fas |
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Islamic Azad University, Hamedan Branch
2020-06-01
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| Series: | Biyumikānīk-i varzishī |
| Subjects: | |
| Online Access: | http://biomechanics.iauh.ac.ir/article-1-205-en.html |
| _version_ | 1818849272515264512 |
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| author | Ali Amiri Khorasani Mohammad Taghi Amiri Khorasani Fariborz Mohammadipour |
| author_facet | Ali Amiri Khorasani Mohammad Taghi Amiri Khorasani Fariborz Mohammadipour |
| author_sort | Ali Amiri Khorasani |
| collection | DOAJ |
| description | Objective: Proper performance of Dachi in karate as a basic technique has a direct impact on the performance of other techniques. The aim of the present is to compare the maximum angular velocities of the hip, knee and ankle joints under different Zenkutsu-dachi movement patterns in karate athletes.
Methods: Participants were 12 male karate athletes height= 175±5.5 cm; weight=75±5.5 kg, age=25±5.5 years, history=8±2.5 years). A three-dimensional motion analyzer with six synchronized infrared cameras at a video recording speed of 200 frames per second was used, and recordings were analyzed in Cortex 2.5.0 software. Zenkutsu-dachi forward movement was performed in six different patterns. The normality of the data distribution was confirmed by Shapiro-Wilk test. To test the study hypotheses, repeated measures ANOVA and Bonferroni post hoc test were used in SPSS V. 25 considering the significant level of P<0.05.
Results: There was a significant difference between movement patterns 3 and 4 and between patterns 5 and 6 in the hip joint (P<0.05), while no significant difference in the knee and ankle joints was reported. Each of the Zenkutsu-dachi movement patterns could change the position and range of motion of the hip joint and iliopsoas muscles.
Conclusion: By bringing the front leg more forward and bending the back leg slightly, the involved limbs and muscles can be in optimal state and creates greater angular velocity in the hip joint. |
| first_indexed | 2024-12-19T06:30:36Z |
| format | Article |
| id | doaj.art-31f9b48b734f4dd588404926cfc41000 |
| institution | Directory Open Access Journal |
| issn | 2476-4906 2476-5937 |
| language | fas |
| last_indexed | 2024-12-19T06:30:36Z |
| publishDate | 2020-06-01 |
| publisher | Islamic Azad University, Hamedan Branch |
| record_format | Article |
| series | Biyumikānīk-i varzishī |
| spelling | doaj.art-31f9b48b734f4dd588404926cfc410002022-12-21T20:32:24ZfasIslamic Azad University, Hamedan BranchBiyumikānīk-i varzishī2476-49062476-59372020-06-01611221Comparison of the Maximum Angular Velocity of Lower Limb Joints in Different Methods of Zenkutsu-dachi in KarateAli Amiri Khorasani0Mohammad Taghi Amiri Khorasani1Fariborz Mohammadipour2 Department of Sport Biomechanic, Faculty of Physical Education and Sport Sciences, Shahid Bahonar University, Kerman, Iran. Department of Sport Biomechanic, Faculty of Physical Education and Sport Sciences, Shahid Bahonar University, Kerman, Iran. Department of Sport Biomechanic, Faculty of Physical Education and Sport Sciences, Shahid Bahonar University, Kerman, Iran. Objective: Proper performance of Dachi in karate as a basic technique has a direct impact on the performance of other techniques. The aim of the present is to compare the maximum angular velocities of the hip, knee and ankle joints under different Zenkutsu-dachi movement patterns in karate athletes. Methods: Participants were 12 male karate athletes height= 175±5.5 cm; weight=75±5.5 kg, age=25±5.5 years, history=8±2.5 years). A three-dimensional motion analyzer with six synchronized infrared cameras at a video recording speed of 200 frames per second was used, and recordings were analyzed in Cortex 2.5.0 software. Zenkutsu-dachi forward movement was performed in six different patterns. The normality of the data distribution was confirmed by Shapiro-Wilk test. To test the study hypotheses, repeated measures ANOVA and Bonferroni post hoc test were used in SPSS V. 25 considering the significant level of P<0.05. Results: There was a significant difference between movement patterns 3 and 4 and between patterns 5 and 6 in the hip joint (P<0.05), while no significant difference in the knee and ankle joints was reported. Each of the Zenkutsu-dachi movement patterns could change the position and range of motion of the hip joint and iliopsoas muscles. Conclusion: By bringing the front leg more forward and bending the back leg slightly, the involved limbs and muscles can be in optimal state and creates greater angular velocity in the hip joint.http://biomechanics.iauh.ac.ir/article-1-205-en.htmlkarateangular velocityzenkutsu-dachihip jointkinematics |
| spellingShingle | Ali Amiri Khorasani Mohammad Taghi Amiri Khorasani Fariborz Mohammadipour Comparison of the Maximum Angular Velocity of Lower Limb Joints in Different Methods of Zenkutsu-dachi in Karate Biyumikānīk-i varzishī karate angular velocity zenkutsu-dachi hip joint kinematics |
| title | Comparison of the Maximum Angular Velocity of Lower Limb Joints in Different Methods of Zenkutsu-dachi in Karate |
| title_full | Comparison of the Maximum Angular Velocity of Lower Limb Joints in Different Methods of Zenkutsu-dachi in Karate |
| title_fullStr | Comparison of the Maximum Angular Velocity of Lower Limb Joints in Different Methods of Zenkutsu-dachi in Karate |
| title_full_unstemmed | Comparison of the Maximum Angular Velocity of Lower Limb Joints in Different Methods of Zenkutsu-dachi in Karate |
| title_short | Comparison of the Maximum Angular Velocity of Lower Limb Joints in Different Methods of Zenkutsu-dachi in Karate |
| title_sort | comparison of the maximum angular velocity of lower limb joints in different methods of zenkutsu dachi in karate |
| topic | karate angular velocity zenkutsu-dachi hip joint kinematics |
| url | http://biomechanics.iauh.ac.ir/article-1-205-en.html |
| work_keys_str_mv | AT aliamirikhorasani comparisonofthemaximumangularvelocityoflowerlimbjointsindifferentmethodsofzenkutsudachiinkarate AT mohammadtaghiamirikhorasani comparisonofthemaximumangularvelocityoflowerlimbjointsindifferentmethodsofzenkutsudachiinkarate AT fariborzmohammadipour comparisonofthemaximumangularvelocityoflowerlimbjointsindifferentmethodsofzenkutsudachiinkarate |