A Novel, Sport-Specific EMG-Based Method to Evaluate Movement Efficiency in Karate Punching
Background: This study aimed to develop a method to analyze the kinetic and kinematic characteristics of the traditional karate Gyaku Tsuki (reverse punch), focusing on the activation sequence of lower and upper extremities and trunk muscles during execution. Methods: An elite male (N = 1) karate at...
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MDPI AG
2025-07-01
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| Series: | Sports |
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| Online Access: | https://www.mdpi.com/2075-4663/13/7/218 |
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| author | László Csákvári Bence Kopper Tamás Horváth |
| author_facet | László Csákvári Bence Kopper Tamás Horváth |
| author_sort | László Csákvári |
| collection | DOAJ |
| description | Background: This study aimed to develop a method to analyze the kinetic and kinematic characteristics of the traditional karate Gyaku Tsuki (reverse punch), focusing on the activation sequence of lower and upper extremities and trunk muscles during execution. Methods: An elite male (N = 1) karate athlete (in kata) performed 20 Gyaku Tsuki punches while equipped with 16 wireless surface EMG sensors integrated with 3-axis accelerometers. The five punches with the highest forearm acceleration were selected for analysis. EMG, accelerometer, and synchronized video data were recorded and processed. Results: A novel visualization technique was developed to represent muscle activation over time, distinguishing a spectrum of 0–25–50–75–100% activation levels. Muscle activation times for arm, leg, and trunk muscles ranged from −0.31 to −0.11 s relative to punch execution, indicating rapid, coordinated muscle engagement. Conclusions: This method enables detailed analysis of muscle activation patterns in karate punches. It offers valuable insights for biomechanics researchers and practical applications for coaches aiming to enhance performance and prevent injuries through better understanding of movement dynamics. |
| format | Article |
| id | doaj-art-9dadc13c94124e5bba2ea2bb8562dfac |
| institution | Kabale University |
| issn | 2075-4663 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sports |
| spelling | doaj-art-9dadc13c94124e5bba2ea2bb8562dfac2025-08-20T03:56:49ZengMDPI AGSports2075-46632025-07-0113721810.3390/sports13070218A Novel, Sport-Specific EMG-Based Method to Evaluate Movement Efficiency in Karate PunchingLászló Csákvári0Bence Kopper1Tamás Horváth2Department of Combat Sports, Hungarian University of Sports Science, 1123 Budapest, HungaryDepartment of Kinesiology, Hungarian University of Sports Science, 1123 Budapest, HungaryResearch Center for Sports Physiology, Hungarian University of Sports Science, 1123 Budapest, HungaryBackground: This study aimed to develop a method to analyze the kinetic and kinematic characteristics of the traditional karate Gyaku Tsuki (reverse punch), focusing on the activation sequence of lower and upper extremities and trunk muscles during execution. Methods: An elite male (N = 1) karate athlete (in kata) performed 20 Gyaku Tsuki punches while equipped with 16 wireless surface EMG sensors integrated with 3-axis accelerometers. The five punches with the highest forearm acceleration were selected for analysis. EMG, accelerometer, and synchronized video data were recorded and processed. Results: A novel visualization technique was developed to represent muscle activation over time, distinguishing a spectrum of 0–25–50–75–100% activation levels. Muscle activation times for arm, leg, and trunk muscles ranged from −0.31 to −0.11 s relative to punch execution, indicating rapid, coordinated muscle engagement. Conclusions: This method enables detailed analysis of muscle activation patterns in karate punches. It offers valuable insights for biomechanics researchers and practical applications for coaches aiming to enhance performance and prevent injuries through better understanding of movement dynamics.https://www.mdpi.com/2075-4663/13/7/218kinematicselectromyographyaccelerationkaratereverse punch |
| spellingShingle | László Csákvári Bence Kopper Tamás Horváth A Novel, Sport-Specific EMG-Based Method to Evaluate Movement Efficiency in Karate Punching Sports kinematics electromyography acceleration karate reverse punch |
| title | A Novel, Sport-Specific EMG-Based Method to Evaluate Movement Efficiency in Karate Punching |
| title_full | A Novel, Sport-Specific EMG-Based Method to Evaluate Movement Efficiency in Karate Punching |
| title_fullStr | A Novel, Sport-Specific EMG-Based Method to Evaluate Movement Efficiency in Karate Punching |
| title_full_unstemmed | A Novel, Sport-Specific EMG-Based Method to Evaluate Movement Efficiency in Karate Punching |
| title_short | A Novel, Sport-Specific EMG-Based Method to Evaluate Movement Efficiency in Karate Punching |
| title_sort | novel sport specific emg based method to evaluate movement efficiency in karate punching |
| topic | kinematics electromyography acceleration karate reverse punch |
| url | https://www.mdpi.com/2075-4663/13/7/218 |
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