Sprint Performance of Elite Wheelchair Basketball Players: Applicability of a Laser System for Describing the Velocity Curve

2016 ◽  
Vol 33 (4) ◽  
pp. 358-373 ◽  
Author(s):  
Amelia Ferro ◽  
Jorge Villacieros ◽  
Javier Pérez-Tejero
Keyword(s):  
Laser System ◽  
Sprint Performance ◽  
Velocity Curve ◽  
Functional Classification ◽  
Wheelchair Basketball ◽  
Training Context ◽  
Immediate Feedback ◽  
Basketball Players ◽  
Performance Variables ◽  
National Team

The purpose of this study was to develop a methodology to accurately analyze sprint performance of elite wheelchair basketball (WB) players in their own training context using a laser system and to analyze the velocity curve performed by the players regarding their functional classification and their playing position. Twelve WB players, from the Spanish men’s national team, took part in an oncourt 20-m-sprint test. BioLaserSport® was used to obtain time, mean velocities (Vm), maximum velocities (Vmax), and distances at 90%, 95%, and 98% of their Vmax. Vm and Vmax reached high values in Classes II and III and in the guard playing position. The protocol developed with the laser system makes it possible to obtain a precise velocity curve in short sprints and allows easy analysis of decisive kinematic performance variables in WB players, showing immediate feedback to coaches and players. The normalized data allow an interpretation of how much, where, and when Vmax occurs along the test.

scholarly journals Influence of Functional Classification on Skill Tests in Elite Female Wheelchair Basketball Athletes

Medicina ◽  
2019 ◽  
Vol 55 (11) ◽  
pp. 740 ◽  
Author(s):  
Kaori Tachibana ◽  
Hirotaka Mutsuzaki ◽  
Yukiyo Shimizu ◽  
Takashi Doi ◽  
Kazushi Hotta ◽  
...  
Keyword(s):  
Point Of View ◽  
Functional Classification ◽  
Wheelchair Basketball ◽  
Basketball Players ◽  
National Team ◽  
Test Items ◽  
Skill Test ◽  
Functional Classes ◽  
Kinematic Point ◽  
Ball Test

Background and objectives: Wheelchair basketball players are classified into four functional classes according to the player’s “volume of action”, characterized by trunk movement and stability. As this classification is based on a kinematic point of view, test items might be differentially affected by the functional classification level. We aimed to clarify field-based skill test items closely related to the functional classification level. Materials and Methods: Twenty-six female wheelchair basketball athletes (Japan National Team candidates) completed seven field-based skill tests (20 m sprint, agility T-test, figure-eight with a ball test, the Yo-Yo 10 m recovery test, and three types of maximal passes), and anthropometric measurements were applied. Results: Significant differences among the classification levels were found for one-hand maximal passes (baseball and hook passes) and the figure-eight with a ball test. Furthermore, performance in the 20 m sprint and 10 m Yo-Yo recovery tests significantly differed between classes 1 and 4. Conclusions: The test items most influenced by the classification levels were one-hand passes, which require trunk stability and balance not only in the horizontal plane, but also in the sagittal and frontal planes. Coaches should consider which test items are strongly affected by the functional classification level when assessing a player’s performance.

scholarly journals Correlation between sleep and psychological mood states in female wheelchair basketball players on a Japanese national team

2017 ◽  
Vol 29 (9) ◽  
pp. 1497-1501 ◽  
Author(s):  
Kenji Tsunoda ◽  
Hirotaka Mutsuzaki ◽  
Kazushi Hotta ◽  
Yukiyo Shimizu ◽  
Naruki Kitano ◽  
...  
Keyword(s):  
Mood States ◽  
Wheelchair Basketball ◽  
Basketball Players ◽  
National Team ◽  
Psychological Mood

scholarly journals Relationship between Sprint Capacity and Acceleration of Wrists in Wheelchair Basketball Players: Design and Reliability of a New Protocol

2021 ◽  
Vol 18 (19) ◽  
pp. 10380
Author(s):  
Amelia Ferro ◽  
Javier Pérez-Tejero ◽  
Guadalupe Garrido ◽  
Jorge Villacieros
Keyword(s):  
Computer Vision ◽  
Injury Prevention ◽  
New Technologies ◽  
Performance Indicator ◽  
Laser System ◽  
Maximum Velocity ◽  
Bilateral Symmetry ◽  
Wheelchair Basketball ◽  
Basketball Players ◽  
Good Reliability

The application of new technologies in wheelchair basketball (WB) is important for the advancement and improvement of athletic performance. The purposes of this study are twofold: (a) to develop a methodological design in order to assess WB players’ performance, using wireless inertial measurement units (WIMU®) and a laser system (BioLaserSport® with computer vision), in a 20 m sprint test on court and (b) to assess bilateral symmetry as a performance indicator and for injury prevention purposes, the study of which in previous research is unknown. For both aims, the relation of the acceleration of the players’ wrists to the speed achieved by the player in the wheelchair was explored. Ten elite WB players participated in an on-court 20 m sprint test during real training. BioLaserSport® with computer vision was used to assess the average velocity (Va) and maximum velocity (Vmax) of the WB players, and two WIMU® were used for the total acceleration (AcelT) of the players’ wrists. A very high correlation was obtained in the assessment of the Va (0.97) and AcelT of both wrists (0.90 and 0.85). There was a significant relationship between the average AcelT of the dominant wrist and the Va on-court sprint velocity (p < 0.05). Two players did not show good wrist symmetry. In conclusion, a new methodological protocol was developed, making it possible to assess the bilateral symmetries in elite WB players in on-court real training and the relation between the acceleration of players’ wrists and players’ wheelchair speed. Coaches can use this protocol to assess performance or for injury prevention, as it shows very good reliability, with high ICC values.

Correlates of shoulder pain in wheelchair basketball players from the Japanese national team: A cross-sectional study

2016 ◽  
Vol 29 (4) ◽  
pp. 795-800 ◽  
Author(s):  
Kenji Tsunoda ◽  
Hirotaka Mutsuzaki ◽  
Kazushi Hotta ◽  
Kaori Tachibana ◽  
Yukiyo Shimizu ◽  
...  
Keyword(s):  
Shoulder Pain ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Wheelchair Basketball ◽  
Basketball Players ◽  
Cross Sectional ◽  
National Team

The Role of Trunk Stabilization in Functional-Classification Levels in Wheelchair Basketball

2017 ◽  
Vol 26 (4) ◽  
pp. 287-293 ◽  
Author(s):  
Asuman Saltan ◽  
Handan Ankarali
Keyword(s):  
Outcome Measure ◽  
Functional Classification ◽  
Wheelchair Basketball ◽  
Basketball Players ◽  
Main Outcome Measure ◽  
Sitting Balance ◽  
Norm Values ◽  
Trunk Balance ◽  
Trunk Stabilization

Objective:To compare classification levels and trunk stabilization of wheelchair basketball players and to identify their norm values of trunk balance.Participants:113 wheelchair basketball players in the super and first Turkish leagues.Interventions:A modified Wheelchair Skills Test (WST) (version 4.1) was used to evaluate trunk stabilization. Two skills were chosen that correspond to the stationary wheelie activity in WST, the 30-s stationary wheelie and stationary wheelie in 180°.Main Outcome Measure:There are no statistical differences between WST rates and point means.Results:The skills and success and safety rates of the players with 1.5 points (51.9%, 44.4%) were lower than those of the players with 1.0 point (70%, 66.7%). In players with 2.5 and 2.0 points, the most successful and safest percentage values were 78.6%, 78.6% and 82.1%, 75%.Conclusions:Although it is expected that trunk stabilization would be better in players with high points, in our study we encountered conflicting results between the points and sitting balance or trunk stabilization. Our study supports the studies in the literature suggesting modifications in the functional-classification system.

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