Mathematical modelling as a tool to assessment of loads in volleyball player’s shoulder joint during spike

Jurkojć, Jacek; Michnik, R.; Czapla, Krzysztof

doi:10.1080/02640414.2016.1214284

Cited by 12 publications

(8 citation statements)

References 17 publications

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“…1 position in the back row, which was difficult and rare in past games, and achieved remarkable results. [11], [12], [13], [14], [15], [16], [27].…”

Section: Discussionmentioning

confidence: 99%

“…Because the sonar signal extension information is contained in the covariance of this noise, the linearized measurement results can be incorporated into the existing random matrix algorithm after a simple transformation of the covariance matrix under certain conditions, thereby utilizing the random matrix eigenvalues. Based on this principle, related scholars proposed an EOT/GTT random matrix method using nonlinear measurement and applied it to radar and sonar tracking of noise signals [11].…”

Section: Related Workmentioning

confidence: 99%

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Nonlinear Random Matrix Model and Research for Quantitative Representation of Volleyball Attacker’s Action Links

Nian

Wang

et al. 2022

Mathematical Problems in Engineering

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With the promotion of volleyball, the technical and tactical level of volleyball is also constantly improving, and the competition in volleyball competition is also extremely fierce. Especially in important games, it can be seen that most of the outstanding volleyball players have the characteristics of both offense and defence. The outside hitter is the main attack point and end point of the team’s offense and defence. The outside hitter’s offensive and defensive ability plays a crucial role in the final outcome of the game. It can be said that an excellent outside hitter is one of the main indicators to measure whether a team can become a world volleyball team. This paper introduces and analyses the optimal solution of kernel norm minimization and its application in the RPCA model. Through analysis, we know that when the alternating direction method solves the RPCA problem, the most expensive calculation is the optimization of the nuclear norm. Facing the singular value decomposition calculation of large-scale matrices, in order to solve the shortcomings of time-consuming and memory-consuming to solve large-scale matrix calculations, this paper proposes new stochastic singular value decomposition algorithms. The outside hitters use the rubbing, slapping, and hanging techniques to adjust their offense, but they rarely use them in the setter’s active organization. Through the research on adjusting the offense, it is found that the outside hitter’s advantage in adjusting the offense not only compensates for the impact of the fluctuating first pass and inadequate defence but also resolves the opponent’s sharp serve and spike, which increases the morale of the team. It is the most important condition for the women’s volleyball team to win the Olympic Games. Overall, the scoring rate of the outside hitter in each offensive position is analysed, which provides important data parameters for the women’s volleyball team to distribute the ball.

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“…1 position in the back row, which was difficult and rare in past games, and achieved remarkable results. [11], [12], [13], [14], [15], [16], [27].…”

Section: Discussionmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Nonlinear Random Matrix Model and Research for Quantitative Representation of Volleyball Attacker’s Action Links

Nian

Wang

et al. 2022

Mathematical Problems in Engineering

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“…Experimental setup. An inertial measurement units (IMUs) system (MVN; Xsens, Netherlands) (Blair, Duthie, Robertson, Hopkins, & Ball, 2018;Jurkojć, Michnik, & Czapla, 2017) was used to obtain three-dimensional kinematic data. A capture rate of 240 Hz was applied.…”

Section: Methodsmentioning

confidence: 99%

Determining Partnering Effects in the “Rise and Fall” Motion of Competitive Waltz by the Use of Statistical Parametric Mapping

Yoshida

Bizokas²,

Demidova³

et al. 2021

BJSHS

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Background. Competitive dance, also known as “DanceSport,” is a competitive style of ballroom dance. The waltz features a particular movement in which the dancer lifts and lowers his/her body while dancing. In ballroom dance terms, this movement is known as the “rise and fall.” The purpose of this research was to examine partnering effects in relation to the vertical component of dancers’ center of mass when performing the competitive waltz. Methods. This investigation was conducted through statistical parametric mapping of the movements of 13 national level competitive dance couples and a world champion couple as they danced both solo and in pairs. The Xsens MVN system was used to record their movements, using a capture rate of 240 Hz. Results. We consequently found that, in the pair condition, the vertical component of the center of mass was smaller for the male dancers and larger for the champion male dancer when compared to their respective solo conditions. However, for the female dancers and the champion female dancer, unlike the males, no significant partner effects were found. Conclusion. Therefore, in terms of partner effects, the “rise and fall.” motion was smaller for the male dancers and larger for the champion male dancer. Keywords: DanceSport, ballroom, kinematics, partnering, statistical parametric mapping.

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“…An inertial measurement unit (IMU) system (MVN Link; Xsens, Netherlands) (Jurkojc et al, 2017) consisting of 17 IMUs was used to obtain three-dimensional kinematic data at 240 Hz for both the male and female dancers. The IMUs were attached to feet, shanks, thighs, pelvis, sternum, head, upper arms, forearms, and hands of the dancers.…”

Section: Instrumentsmentioning

confidence: 99%

What are the kinematic characteristics of the world champion couple in competitive ballroom dance during the waltz's spin movement?

Yoshida¹,

Bizokas²,

Demidova³

et al. 2022

Front. Sports Act. Living

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To evaluate competitive ballroom dancing, one of the official events of the World Games, spin movements used by advanced dancers who ranked high in actual competition may be employed. The purpose of this study was to investigate the kinematic characteristics of spin movements in competitive ballroom dancing performed by world champion couples, especially holding posture and lower limb movements. A champion couple and 13 national-level competitive ballroom dancers as the control group participated in this study. An inertial measurement unit (IMU) system (MVN Link; Xsens, Netherlands) consisting of 17 IMUs, attached to feet, shanks, thighs, pelvis, sternum, head, upper arms, forearms, and hands of the dancers, was used to obtain three-dimensional kinematic data at 240 Hz. The overall trend was that the actual and normalized stride lengths of the champion male and female dancers tended to be longer than those of the male and female dancers in the control group. Further, large differences were observed in the pelvic and rib cage segments movements, and the relative angle of the rib cage segment to the pelvic segment. The champion male dancer started to move from the pelvic segment, whereas the champion female dancer and the national-level top male and female dancers started to move from the rib cage segment. During the spin movement, the champion male dancer was in a position where the rib cage segment was rotated to the left with respect to the pelvic segment, whereas the other dancers were in a position where the rib cage segment was rotated to the right. Although limited to technical aspects, these dance kinematic characteristics of the world champion couples and their differences from those of the control group dancers, will be helpful to competitive ballroom dancers and coaches in their daily practice.

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Mathematical modelling as a tool to assessment of loads in volleyball player’s shoulder joint during spike

Cited by 12 publications

References 17 publications

Nonlinear Random Matrix Model and Research for Quantitative Representation of Volleyball Attacker’s Action Links

Nonlinear Random Matrix Model and Research for Quantitative Representation of Volleyball Attacker’s Action Links

Determining Partnering Effects in the “Rise and Fall” Motion of Competitive Waltz by the Use of Statistical Parametric Mapping

What are the kinematic characteristics of the world champion couple in competitive ballroom dance during the waltz's spin movement?

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