Registration of special endurance indicators in boxing using accelerometry
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Pianzina N.N.
I.N. Ulianov Chuvash State University (Cheboksary, Russia).
Email: npianzina@mail.ru
I.N. Ulianov Chuvash State University (Cheboksary, Russia).
Email: npianzina@mail.ru
Pianzin A.I.
I. Yakovlev Chuvash State Pedagogical University (Cheboksary, Russia).
I. Yakovlev Chuvash State Pedagogical University (Cheboksary, Russia).
No. 11, pp. 109–109
Received: 14.04.2026 | Published: 23.10.2026
Keywords: boxing, special endurance, strike rate, strike force.
Introduction. A boxer's movements are characterized by a high density of strikes of variable intensity throughout the bout, which places increased demands on special endurance. The literature presents a wide range of information on the specifics of competitive activity in boxing, on teaching and improving the techniques of offensive and defensive actions, and on the content of sports training; however, the features of the manifestation of special endurance and the methods of its registration in boxing are not fully disclosed. The use of accelerometry when striking a punching bag reveals broad opportunities for identifying these features.
Methods and organization of the study. To register the accelerations of the punching bag, a smartphone with the Physics Toolbox Accelerometer application installed on it was used [1]. In measurement mode, the mobile application records accelerations in three projections, as well as the resultant acceleration with an amplitude of up to 8 g and a frequency of 200 to 500 Hz, depending on the smartphone's accelerometer model. The obtained data can be subjected to quantitative analysis in a spreadsheet format. The measuring device was attached to the bag in the striking area using a high-stiffness elastic fitness band in such a way as to exclude its own oscillations, allowing it to reflect only the oscillations of the bag itself from the strikes delivered to it.
The study group consisted of boys training in a school boxing section (n=16, age 11.8±1.99 years, body weight 38.5±7.44 kg). They performed two types of motor tasks, each lasting 1 minute: strikes with the lead hand, and alternating strikes with both hands on the punching bag. The strikes had to be performed with the maximum possible frequency and force. During data analysis, the total time of the task was divided into 5-second intervals, determining the number of strikes and the average force within them (calculated as the product of the acceleration in g along two horizontal projections and the mass of the bag).
Results of the study and their discussion. A uniform decrease in the frequency of two-handed strikes from four to two per second was revealed during the first half of the test, after which this indicator stabilizes. When performing the task with one hand, the frequency dynamics are similar, but it is lower by one strike per second. Speed endurance here is characterized not only by the strike frequency but also by the nature of its changes throughout the task. The average force of one-handed strikes turned out to be one and a half times greater than that of two-handed strikes. At the same time, if in two-handed strikes the force values remained at approximately the same level throughout the task, then when working with one hand, the force reaches its maximum values only by the beginning of the second half of the task, with a gradual decrease towards the end of the test. Strength endurance manifests itself in dynamics different from those of speed endurance.
Conclusion. The registration of punching bag accelerations during the execution of combination strikes in boxing is becoming more accessible in coaching practice due to the use of acceleration sensors that make up the hardware of modern smartphones. The analysis of primary data allows the coach to identify the individual level of manifestation of special endurance indicators in a boxer and to determine ways for its improvement.
Methods and organization of the study. To register the accelerations of the punching bag, a smartphone with the Physics Toolbox Accelerometer application installed on it was used [1]. In measurement mode, the mobile application records accelerations in three projections, as well as the resultant acceleration with an amplitude of up to 8 g and a frequency of 200 to 500 Hz, depending on the smartphone's accelerometer model. The obtained data can be subjected to quantitative analysis in a spreadsheet format. The measuring device was attached to the bag in the striking area using a high-stiffness elastic fitness band in such a way as to exclude its own oscillations, allowing it to reflect only the oscillations of the bag itself from the strikes delivered to it.
The study group consisted of boys training in a school boxing section (n=16, age 11.8±1.99 years, body weight 38.5±7.44 kg). They performed two types of motor tasks, each lasting 1 minute: strikes with the lead hand, and alternating strikes with both hands on the punching bag. The strikes had to be performed with the maximum possible frequency and force. During data analysis, the total time of the task was divided into 5-second intervals, determining the number of strikes and the average force within them (calculated as the product of the acceleration in g along two horizontal projections and the mass of the bag).
Results of the study and their discussion. A uniform decrease in the frequency of two-handed strikes from four to two per second was revealed during the first half of the test, after which this indicator stabilizes. When performing the task with one hand, the frequency dynamics are similar, but it is lower by one strike per second. Speed endurance here is characterized not only by the strike frequency but also by the nature of its changes throughout the task. The average force of one-handed strikes turned out to be one and a half times greater than that of two-handed strikes. At the same time, if in two-handed strikes the force values remained at approximately the same level throughout the task, then when working with one hand, the force reaches its maximum values only by the beginning of the second half of the task, with a gradual decrease towards the end of the test. Strength endurance manifests itself in dynamics different from those of speed endurance.
Conclusion. The registration of punching bag accelerations during the execution of combination strikes in boxing is becoming more accessible in coaching practice due to the use of acceleration sensors that make up the hardware of modern smartphones. The analysis of primary data allows the coach to identify the individual level of manifestation of special endurance indicators in a boxer and to determine ways for its improvement.
References
- Physics Toolbox Accelerometer [Электронный ресурс] Режим доступа: https://www.vieyrasoftware.net/
Журнал "THEORY AND PRACTICE