scholarly journals Wheelchair Propulsion Biomechanics in Junior Basketball Players: A Method for the Evaluation of the Efficacy of a Specific Training Program

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Elena Bergamini ◽  
Francesca Morelli ◽  
Flavia Marchetti ◽  
Giuseppe Vannozzi ◽  
Lorenzo Polidori ◽  
...  

As participation in wheelchair sports increases, the need of quantitative assessment of biomechanical performance indicators and of sports- and population-specific training protocols has become central. The present study focuses on junior wheelchair basketball and aims at (i) proposing a method to identify biomechanical performance indicators of wheelchair propulsion using an instrumented in-field test and (ii) developing a training program specific for the considered population and assessing its efficacy using the proposed method. Twelve athletes (10 M, 2 F, age = 17.1 ± 2.7 years, years of practice = 4.5 ± 1.8) equipped with wheelchair- and wrist-mounted inertial sensors performed a 20-metre sprint test. Biomechanical parameters related to propulsion timing, progression force, and coordination were estimated from the measured accelerations and used in a regression model where the time to complete the test was set as dependent variable. Force- and coordination-related parameters accounted for 80% of the dependent variable variance. Based on these results, a training program was designed and administered for three months to six of the athletes (the others acting as control group). The biomechanical indicators proved to be effective in providing additional information about the wheelchair propulsion technique with respect to the final test outcome and demonstrated the efficacy of the developed program.

2017 ◽  
Vol 60 (1) ◽  
pp. 243-254 ◽  
Author(s):  
Bartosz Molik ◽  
Andrzej Kosmol ◽  
Natalia Morgulec-Adamowicz ◽  
Judit Lencse-Mucha ◽  
Anna Mróz ◽  
...  

AbstractIn wheelchair sports, aerobic performance is commonly assessed with the use of an arm crank ergometer (ACE), a wheelchair ergometer (WCE) or a wheelchair treadmill (WCT). There are different protocols to identify peak oxygen uptake in wheelchair sports; however, only a few protocols have been applied to evaluate these conditions in wheelchair basketball players. The purpose of this study was to compare physiological responses during maximal exercise testing with the use of ACE and WCT in wheelchair basketball players. Twelve elite male wheelchair basketball players participated in this study. The research was performed during a training camp of the Polish National Wheelchair Basketball Team. The study participants were divided into two functional categories: A (players with class 1.0 - 2.5) and B (players with class 3.0 - 4.5). Two main maximal exercise tests, i.e. wheelchair treadmill stress test (WCT test) and arm crank ergometer stress test (ACE test) were used to evaluate aerobic performance of the players. There were no statistically significant differences in aerobic tests between the players from both groups. The comparison of results achieved in two aerobic tests performed on WCT and ACE did not reveal any significant differences between the analyzed variables (peak heart rate (HRpeak), peak oxygen uptake (VO2peak), minute ventilation (VE), anaerobic threshold (AT), lactate concentration (LApeak), and a drop in lactate concentration (%LA)). Strong correlations between results achieved in WCT and ACE tests were found for VO2peak, VE and LApeak. The main conclusion of the study is that both WCT and ACE tests may be useful when determining aerobic capacity of wheelchair basketball players. Moreover, both protocols can be used by athletes regardless of their functional capabilities and types of impairment.


2019 ◽  
Vol 54 (12) ◽  
pp. 1296-1303 ◽  
Author(s):  
Mohammad Karimizadeh Ardakani ◽  
Erik A. Wikstrom ◽  
Hooman Minoonejad ◽  
Reza Rajabi ◽  
Ali Sharifnezhad

Context Hopping exercises are recommended as a functional training tool to prevent lower limb injury, but their effects on lower extremity biomechanics in those with chronic ankle instability (CAI) are unclear. Objective To determine if jump-landing biomechanics change after a hop-stabilization intervention. Design Randomized controlled clinical trial. Setting Research laboratory. Patients or Other Participants Twenty-eight male collegiate basketball players with CAI were divided into 2 groups: hop-training group (age = 22.78 ± 3.09 years, mass = 82.59 ± 9.51 kg, height = 187.96 ± 7.93 cm) and control group (age = 22.57 ± 2.76 years, mass = 78.35 ± 7.02 kg, height = 185.69 ± 7.28 cm). Intervention(s) A 6-week supervised hop-stabilization training program that consisted of 18 training sessions. Main Outcome Measure(s) Lower extremity kinetics and kinematics during a jump-landing task and self-reported function were assessed before and after the 6-week training program. Results The hop-stabilization program resulted in improved self-reported function (P < .05), larger sagittal-plane hip- and knee-flexion angles, and greater ankle dorsiflexion (P < .05) relative to the control group. Reduced frontal-plane joint angles at the hip, knee, and ankle as well as decreased ground reaction forces and a longer time to peak ground reaction forces were observed in the hopping group compared with the control group after the intervention (P < .05). Conclusions The 6-week hop-stabilization training program altered jump-landing biomechanics in male collegiate basketball players with CAI. These results may provide a potential mechanistic explanation for improvements in patient-reported outcomes and reductions in injury risk after ankle-sprain rehabilitation programs that incorporate hop-stabilization exercises.


2019 ◽  
Vol 7 (4) ◽  
pp. 51-57
Author(s):  
Tatyana Obletsova

The purpose of the study was to compare and analyze the psychophysiological characteristics of young bas- ketball players who trained according to both traditional program and experimental training program. The experimental training program provides motor actions realization in suddenly changing conditions. Research methods and organization. The study involved 24 basketball players aged 13-14 years, with the expe- rience of sports activities from 5 to 6 years. The complex "NS-Psychotest" (2007, Ivanovo) was used to evalu- ate psychophysiological characteristics using the tests "Simple visual-motor reaction", "Reaction to a moving object" and "Complex visual-motor reaction".. Differences significance was established using one-way variance analysis (ANOVA) with Post-Hoc analysis using the Newman-Keuls criterion (STATISTICA 10 software pack- age). Research results. Our training program aimed to coordination abilities improvement included open competi- tive basketball exercises, a set of body core static exercises and special exercises on the balance ladder. It was revealed that basketball players reaction stability decreasing after the end of training programs both in the experimental group (by 2.67%) and in the control group (by 1.08%) at p <0.05. At the same time most studied psychophysiological characteristics in the experimental group tended to increase, versus decreasing in the control group. Conclusion. Thus, our experimental training program for young basketball players aimed to coordination abilities improvement has a positive effect to the athletes psychophysiological characteristics and it can be used for competitive results improving.


2018 ◽  
Vol 16 (1) ◽  
pp. 127
Author(s):  
Marko Radenkovic ◽  
Sasa Bubanj ◽  
Dragana Beric ◽  
Ratko Stankovic ◽  
Marko Stojanović ◽  
...  

The aim of this study was to determine the influence of the specific training program on the kinematic parameters of made jump shots in basketball. Participants were 31 basketball players, aged 15.32±0.65. All participants trained according to a specific training program for 10 weeks. Data obtained at the initial and final measurements were processed by nonparametric statistics. Data processing was carried out in the direction of determining the difference in kinematic parameters within the group between the initial and final measurements. After that, the level of impact of a specific training program on the mentioned parameters was determined. The obtained results indicated that there are differences between initial and final measurements in eight out of 10 (80%) kinematic parameters and the influence of the specific training program existed in the same eight (80%) kinematic parameters.


Author(s):  
Vesile Şahiner ◽  
Feyzullah Koca

The aim of this study is to investigate the effects of the core training program applied for 8 weeks to basketball players aged 16-18 on free throw and vertical jump performance. 22 male basketball players (11 experimental group, 11 control group) aged 16-18 participated in the study voluntarily. While core training was applied to the basketball players in the experimental group, 2 days a week for 8 weeks, together with the basketball training, the basketball players in the control group only continued their routine basketball training. Free throw and vertical jump performance tests were applied to the subjects before applying the 8-week core training program (pre-test) and after the 8-week core training (post-test). Statistically significant difference was found between pretest and posttest in terms of experimental group free throw test values (p<0.05) Statistically significant difference was found between the pretest and posttest values of the control group in terms of free throw test values (p<0.05). When the experimental group and control group free throw pretest and posttest were compared, no statistical significance was found (p>0.05). A statistically significant difference was found between the pretest and posttest in terms of vertical jump test values of the experimental group and the control group (p<0.05). However, the development in the experimental group was higher than in the control group. There was no statistically significant difference between the free throw test difference mean values of the experimental group and the control group (p>0.05). A statistically significant difference was found between the vertical jump test difference mean values of the experimental group and the control group (p<0.05). As a result, it can be said that 8-week core training has positive effects on the development of vertical jump performance on basketball players, but no effect on free throw performance. <p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/edu_01/0870/a.php" alt="Hit counter" /></p>


Author(s):  
Hasan Hallaceli

In the literature, information about injury patterns, risk factors and management strategies is limited for wheelchair athletes. The purpose of this study was to determine the prevalence and nature of injuries in wheelchair sports participants. Demographic data, sport history, type, area, cause and story of the injury and barriers of collecting this sport information were recorded. A total of 15 individuals were included in the study. The biggest barrier to play the sport was the cost of the wheelchair. 26.6% of them had injury in the past one year and 75% of them had injuries because of muscle tears. Injuries while playing wheelchair sports are common, and mostly occurred while driving the wheelchair. Mostly their fingers are squeezed and stuck to the wheelchair. Education for prevention of injuries should be given to all the players. Protective equipment for hands should be considered to protect against injuries. Keywords: Injury, wheelchair, basketball players, wheelchair athletes


2009 ◽  
Vol 18 (4) ◽  
pp. 465-481 ◽  
Author(s):  
Tamara C. Valovich McLeod ◽  
Travis Armstrong ◽  
Mathew Miller ◽  
Jamie L. Sauers

Context:Poor balance has been associated with increased injury risk among athletes. Neuromuscular-training programs have been advocated as a means of injury prevention, but little is known about the benefits of these programs on balance in high school athletes.Objective:To determine whether there are balance gains after participation in a neuromuscular-training program in high school athletes.Design:Nonrandomized controlled trial.Setting:All data were collected at each participating high school before and after a 6-wk intervention or control period.Participants:62 female high school basketball players recruited from the local high school community and assigned to a training (n = 37) or control (n = 25) group.Intervention:Training-group subjects participated in a 6-wk neuromuscular-training program that included plyo- metric, functional-strengthening, balance, and stability-ball exercises.Main Outcome Measures:Data were collected for the Balance Error Scoring System (BESS) and Star Excursion Balance Test (SEBT) before and after the 6-wk intervention or control period.Results:The authors found a significant decrease in total BESS errors in the trained group at the posttest compared with their pretest and the control group (P = .003). Trained subjects also scored significantly fewer BESS errors on the single-foam and tandem-foam conditions at the posttest than the control group and demonstrated improvements on the single-foam compared with their pretest (P = .033). The authors found improvements in reach in the lateral, anteromedial, medial, and posterior directions in the trained group at the posttest compared with the control group (P < .05) using the SEBT.Conclusion:The study demonstrates that a neuromuscular-training program can increase the balance and proprioceptive capabilities of female high school basketball players and that clinical balance measures are sensitive to detect these differences.


Retos ◽  
2021 ◽  
Vol 43 ◽  
pp. 256-263
Author(s):  
Pedro Grenha ◽  
José Moura ◽  
Eduardo Guimarães ◽  
Pedro Fonseca ◽  
Filipa Sousa ◽  
...  

  The current study intended to investigate the effects of a self-training program on shooting performance and kinematics of young basketball players. Fourteen male basketball players aged 16.64±.50 years, divided in control group (n=7) and experimental group (n=7), were assessed on free-throw, two-point and three-point shooting performance and on four kinematic parameters (release height, release angle, release speed and trajectory variability), before and after a five-week training program. During the five-week period, the experimental group accomplished a shooting training program that included 600 shots per week. Both groups maintained their regular basketball practice. The results show that the experimental group significantly increased their shooting performance on three-point (p<.05) and on free-throw (p<.05). Moreover, a significant decrease in three-point ball release angle (p<.05) and a significant increase in free-throw ball release height (p<.05) were observed in the experimental group, while the control group significantly increased the two-point ball release speed (p<.05). In conclusion, self-shooting basketball practice, in addition to formal practice, significantly improves shooting performance of young basketball players. In contrast, the reduced changes on the analysed kinematic parameters caused by the self-training program are most likely a consequence of the absence of external feedback during training process.  Resumen. El propósito del presente estudio fue investigar los efectos de un programa de autoentrenamiento en el rendimiento y cinemática de tiro de jóvenes jugadores de baloncesto. Catorce jugadores de baloncesto masculinos, de 16.64±0.50 años, divididos en grupo de control (n=7) y grupo experimental (n=7), fueron evaluados en el rendimiento de tiro libre, de dos puntos y de tres puntos y en cuatro parámetros cinemáticos (altura de liberación, ángulo de liberación, velocidad de liberación y variabilidad de la trayectoria), antes y después de un programa de entrenamiento de cinco semanas. Durante el período de cinco semanas, el grupo experimental realizó un programa de entrenamiento de tiro que incluía 600 tiros por semana. Ambos grupos mantuvieron su práctica regular de baloncesto. Los resultados muestran que el grupo experimental aumentó significativamente su rendimiento en el tiro de tres puntos (p<.05) y en el tiro libre (p<.05). Además, se observó, en el grupo experimental, una disminución significativa del ángulo de liberación en el tiro de tres puntos (p<.05) y un aumento significativo de la altura de liberación en el tiro libre (p<.05), mientras que el grupo de control aumentó significativamente la velocidad de liberación en el tiro de dos pontos (p<.05). En conclusión, la autopráctica de tiro en baloncesto, además de la práctica formal, mejora significativamente el rendimiento de tiro de los jugadores jóvenes. Por el contrario, los cambios reducidos en los parámetros cinemáticos analizados son probablemente una consecuencia de la ausencia de corrección externa durante el proceso de autoentrenamiento.


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