scholarly journals The effect of fatigue on kinematics and kinetics of basketball dribbling with changes of direction

Kinesiology ◽  
2021 ◽  
Vol 53 (2) ◽  
pp. 296-308
Author(s):  
Feng Li ◽  
Tomislav Rupčić ◽  
Damir Knjaz
Keyword(s):  
Angular Velocity ◽  
Knee Joint ◽  
Wrist Joint ◽  
Body Height ◽  
Maximum Force ◽  
Basketball Players ◽  
Basketball Game ◽  
Step Velocity ◽  
Significant Difference ◽  
Kinematics And Kinetics

Basketball dribbling is one of the key elements in basketball game. There is a lack of studies investigating the effect of fatigue on kinematics and kinetics in basketball dribbling. There are two primary aims of this study: (1) to explore the effect of fatigue on kinematics and kinetics in dribbling with the change of directions; (2) to determine the effect of fatigue on dribbling speed. Fourteen Croatian senior male basketball players, not power forwards or centers (age: 21.16±3.43 years; body height: 188.81±6.88 cm; body mass: 87.81±6.06 kg; body fat: 13.34±3.52%) participated in the study. Each player performed two types of change of direction (COD) while dribbling: front COD and spin move in the non-fatigued and then in the fatigued state. Xsens suit and Novel insoles were used to measure the kinematic and kinetic parameters. In terms of the front COD, the results of this study demonstrated that the maximum angular velocity in the knee (p=.028) and wrist joint (p=.007) as well as maximum force (p=.004) significantly decreased in the fatigued state. In terms of the spin move, the results showed that there were significant differences in pelvis velocity (p=.000), the maximum angular velocity in the knee joint (p=.020), and the first step velocity (p=0.010) between the fatigued and non-fatigued states. No significant difference was found in the pelvis position, minimum angle in the knee joint and maximum force. Importantly, dribbling speed significantly decreased in the fatigued state (p=.002). The findings of this study suggest that coaching staff should design appropriate training programs to optimize players’ ability to resist fatigue when dribbling under real game speed conditions.

scholarly journals The Effect of Upper Extremity Fatigue on Grip Strength and Passing Accuracy in Junior Basketball Players

2013 ◽  
Vol 37 (1) ◽  
pp. 71-79 ◽  
Author(s):  
Taghread Ahmed
Keyword(s):  
Grip Strength ◽  
Upper Extremity ◽  
Old Age ◽  
Body Height ◽  
Basketball Players ◽  
Warm Up ◽  
Testing Conditions ◽  
Fatigue Protocol ◽  
Basketball Game ◽  
Significant Difference

Fatigue is an unavoidable part of a basketball game, which may affect an athlete’s performance. The aim of this study was to investigate the effect of upper extremity fatigue on grip strength and passing accuracy in basketball, and ascertain if the effects of different fatigue protocols on grip strength and passing accuracy are the same. Twenty-four juniors under 18 years old (age: 16.75 ± 0.62 years; body height: 184.5 ± 3.31 cm; body mass: 77.25 ± 3.22 kg) volunteered to participate in the study, and were divided into two groups. After a warm-up, both groups performed the basketball passing test and grip strength was recorded for each group under three different testing conditions: rest, 70% and 90% exercise intensity. The protocol used for the first group was the chest press, and for the second group the wrist curls. Results show that after the upper extremity fatigue protocol all parameters of the study (grip strength and passing accuracy) showed a significant decrease, and there was no significant difference between both groups regarding grip strength and passing accuracy. The study suggested that in order to avoid upper extremity fatigue, basketball trainers and coaches need to include upper extremity conditioning exercises into their training sessions.

scholarly journals PENGEMBANGAN MODEL LATIHAN MENYERANG PADA PERMAINAN BOLA BASKET

2018 ◽  
Vol 9 (1) ◽  
pp. 68-76
Author(s):  
Iman Sulaiman ◽  
Ahmad Rizaldy Fajrin
Keyword(s):  
Research And Development ◽  
Training Model ◽  
P Value ◽  
Depth Information ◽  
Basketball Players ◽  
Significance Level ◽  
Basketball Game ◽  
Significant Difference ◽  
Before And After ◽  
Test Of Significance

The objective of the research and development of the training model is to attack on the game of basketball. In addition, research and development is conducted to obtain in-depth information about the development and implementation of the exercise model and to know the effectiveness, efficiency of the model made.This research and development uses Research & Development (R & D) development methods from Borg and Gall. The subjects in this research and development are 2 different two place clubs of Victoria basketball club, Level Up basketball club.The model effectiveness test uses a test instrument to collect the basketball player's ability data. Analysis of research data using t test with significance level of 0.05. Analysis of data obtained average attack value before given model of attacking exercise is 61.0455 or 61 and after being given treatment with attacking model 75.5909 or 75.6. In the test of significance difference with SPSS 16 can result t-count = -29,567 db = 44 and p-value = 0.00 <0.05 which means there is a significant difference in the ability to attack before and after being given an attacking training model on basketball game that with a significance level of 0.05 then H0 is rejected. Based on the description it can be concluded that the training model attack on basket game developed that can be applied effectively and efficiently so that it can increase attack on basketball players.

scholarly journals Effects of Exercise Continued Until Anaerobic Threshold on Balance Performance in Male Basketball Players

2012 ◽  
Vol 33 (1) ◽  
pp. 73-79 ◽  
Author(s):  
Nurtekin Erkmen ◽  
Sibel Suveren ◽  
Ahmet Göktepe
Keyword(s):  
Anaerobic Threshold ◽  
Body Height ◽  
Balance Performance ◽  
Exercise Protocol ◽  
Training Experience ◽  
Basketball Players ◽  
Post Exercise ◽  
Static Tests ◽  
Paired Samples ◽  
Significant Difference

Effects of Exercise Continued Until Anaerobic Threshold on Balance Performance in Male Basketball PlayersThe objective of the present study was to determine the effects of exercise continued until the anaerobic threshold on balance performance in basketball players. Twelve male basketball players (age = 20.92 ± 2.81 years, body height = 192.72 ± 7.61 cm, body mass = 88.09 ± 8.41 kg, training experience = 7.17 ± 3.10 years) volunteered to participate in this study. A Kinesthetic Ability Trainer (KAT 2000 stabilometer) was used to measure the balance performance. Balance tests consisted of static tests on dominant, nondominant and double leg stance. The Bruce Protocol was performed by means of a treadmill. The exercise protocol was terminated when the subject passed the anaerobic threshold. After the exercise protocol, balance measurements were immediately repeated. Statistical differences between pre and post-exercise for dominant, nondominant and double leg stance were determined by the paired samples t-test according to the results of the test of normality. The post-exercise balance score on the dominant leg was significantly higher than pre-exercise (t = -2.758, p < 0.05). No differences existed between pre- and postexercise in the balance scores of the nondominant leg after the exercise protocol (t = 0.428, p > 0.05). A significant difference was found between pre and post-exercise balance scores in the double leg stance (t = -2.354, p < 0.05). The main finding of this study was that an incremental exercise continued until the anaerobic threshold decreased balance performance on the dominant leg in basketball players, but did not alter it in the nondominant leg.

scholarly journals BODY HEIGHT, BODY MASS, BODY MASS INDEX OF ELITE BASKETBALL PLAYERS IN RELATION TO THE PLAYING POSITION AND THEIR IMPORTANCE FOR SUCCESS IN THE GAME

2021 ◽  
pp. 74-79
Author(s):  
Milan Anđelić ◽  
Marko Joksimović ◽  
Aleksandar Kukrić ◽  
Elvira Nikšić ◽  
Stefania D'Angelo ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Body Height ◽  
Morphological Characteristics ◽  
Basketball Players ◽  
Professional Basketball ◽  
Basketball Game ◽  
Overall Performance ◽  
Different Levels

The morphological characteristics of elite basketball players are of great interest to some authors in order to define the best morphological profile for a particular playing position and different levels of competition. The aim of the research was to determine the differences in morphological characteristics in professional basketball players in relation to the playing position in different league competitions and to determine the relevance of these characteristics for success in the game. The survey included a sample of 773 elite basketball players competing in five different leagues in Europe. In our study, we found that centers are significantly taller and heavier than guards and forwards are. In addition to other components of basketball (technique, tactics, coach strategy), body height, body mass and body mass index play a major role in overall performance in a basketball game in all positions. The obtained data can help coaches in the scouting process in which leagues in Europe are played by players with certain morphological characteristics in relation to the playing position.

scholarly journals The Relationship Between Reactive Agility and Change of Direction Speed in Professional Female Basketball and Handball Players

2021 ◽  
Vol 12 ◽  
Author(s):  
Marek Popowczak ◽  
Ireneusz Cichy ◽  
Andrzej Rokita ◽  
Jarosław Domaradzki
Keyword(s):  
Body Mass ◽  
Body Height ◽  
Anthropometric Parameters ◽  
Basketball Players ◽  
Change Of Direction ◽  
Significant Difference ◽  
Anthropometric Features ◽  
Reactive Agility ◽  
Partial Correlations ◽  
The Difference

Assessing the physical ability of players to perform change of direction and the cognitive and motor abilities revealed in reactive agility (RA) is necessary to understand the physical requirements and capabilities of professional players in handball and basketball. The main aim of this study was to determine the differences between professional female basketball and handball players in terms of anthropometric features, change of direction speed (CODS), and the RA task. Moreover, the relationships among anthropometric features, agility, and parameters of perception were determined. Two scenarios of the Five-Time Shuttle Run to Gates test (planned and unplanned) were used to evaluate the CODS and RA. The response time (RT) was also measured in the unplanned scenario. Additionally, the index of reactivity (REAC-INDEX) was specified as the difference between the RA test result and the measurement of CODS. There was a significant difference found in terms of body height, with basketball players being taller than handball players (p = 0.032). Professional female handball players achieved better results than professional female basketball players with regard to RA tasks (p = 0.01) and CODS (p = 0.041). Significant simple correlations between each anthropometric feature (body height, body mass) and values for CODS and RA were observed (r = 0.49–0.53). Applying partial correlation allowed for the assessment of actual relationships among CODS, RA, RT, and REAC-INDEX, without a confounding variable. Detaching the anthropometric parameters from the rest of the relationships resulted in maintenance or changes in r-values and an increased significance in the relationships between each pair: RA vs. RT, RA vs. REAC-INDEX, and RT vs. REAC-INDEX. The strongest associations were related to RT vs. REAC-INDEX (r = 0.97 at detaching body height or body mass, p &lt; 0.001) and CODS vs. RA (r = 0.66 at detaching body height and r = −0.67 at detaching body mass, p &lt; 0.001). It is recommended to use partial correlations in subsequent studies, as simple correlations are not reliable and may not reveal the apparent relationships between the variables. In addition, when determining the CODS and RA, it is suggested to take anthropometric and perception variables into account, such as reaction time or REAC-INDEX.

scholarly journals Influence of Fatigue on Some Kinematic Parameters of Basketball Passing

2021 ◽  
Vol 18 (2) ◽  
pp. 700
Author(s):  
Feng Li ◽  
Damir Knjaz ◽  
Tomislav Rupčić
Keyword(s):  
Kinematic Analysis ◽  
Objective Method ◽  
National Program ◽  
Kinematic Parameters ◽  
Basketball Players ◽  
Ball Speed ◽  
Arm Span ◽  
Basketball Game ◽  
Significant Difference ◽  
Angular Velocities

Kinematic analysis is an objective method for examining basketball technique. However, there are just a few studies featuring a kinematic analysis of passing. The purpose of this study was to determine whether the kinematic parameters and accuracy of passing changed when players were under the influence of fatigue. Eleven Croatian basketball players who are members of the youth national program (age: 18.36 ± 0.67 years; height: 192.32 ± 9.98 cm; weight: 83.35 ± 11.19 kg; body fat: 15.00 ± 4.40%, arm span: 194.34 ± 10.39 cm) participated in fatigue and non-fatigue repetitive tests. A Xsens suit was used to analyze the kinematic parameters of push passing; a radar gun was used to determine ball speed; heart rate and blood lactate were used to identify fatigue and non-fatigue state. There was a significant difference in angular velocities of shoulder (p = 0.01), elbow (p = 0.04), and wrist (p = 0.01), accuracy (p = 0.01), ball speed (p = 0.00), pelvis position (p = 0.00), and velocity of the pelvis in X-axis (p = 0.00) between fatigue and non-fatigue state. Fatigue influences some kinematic parameters and accuracy of passing. The findings of this study suggest that coaches conduct as many drills as possible in situational conditions that are similar to the conditions during the basketball game itself.

scholarly journals Ratio of maximum hamstring torque to maximum quadriceps torque in professional basketball and soccer players

2021 ◽  
Vol 7 (4) ◽  
pp. 8-18
Author(s):  
A. Kukrić ◽  
M. Joksimović ◽  
B. Petrović ◽  
F. Latino ◽  
R. Pavlović ◽  
...  
Keyword(s):  
Knee Joint ◽  
Peak Torque ◽  
Soccer Players ◽  
Football Players ◽  
Basketball Players ◽  
Professional Basketball ◽  
Professional Soccer ◽  
Lower Extremity Muscle ◽  
Significant Difference ◽  
The Difference

Purpose: The aim of the study was to determine the differences between football players and basketball players in the mean absolute values ​​of maximum torque flexors and extensors, ratio of maximum hamstring torque to maximum quadriceps torque dominant (DOM) non-dominant (ND) leg and differences in bilateral imbalance of flexor muscles and knee extensors. Material and methods: The research included a sample of 39 professional athletes. The first subsample included 19 professional basketball players while the second subsample included 20 professional soccer players. Results: Based on the results of the torques of the extensors in the knee joint of the DOM and ND legs, it was established that there is no statistically significant difference between basketball players and football players. However, a statistically significant difference was found in the torque flexors of the knee joint DOM (p≤0.01) and ND (p≤0.00) of the leg between basketball players and football players. On the other hand, the results of the research indicate that the difference between basketball players and football players in the ratio of Hamstrings peak torque to Quadriceps peak torque was recorded only in the ND leg (p≤0.02), while the difference in the DOM leg is not statistically significant. The results of our study indicate that basketball players have a higher percentage of imbalances compared to football players, especially in m. hamstrings. Conclusion: This study provides normative data on populations specific to soccer and basketball, but does not provide evidence of the ability of the isokinetic assessment of lower extremity muscle strength to predict injuries to football players and basketball players.

scholarly journals Correlations Between Stroke Structural Characteristics and Stroke Effect of Young Table Tennis Players

2020 ◽  
Author(s):  
Yi Xiao ◽  
Miaomiao Lu ◽  
Yuxuan Zeng ◽  
Yuanjie Xiao
Keyword(s):  
Angular Velocity ◽  
Knee Joint ◽  
High Speed ◽  
Wrist Joint ◽  
Structural Characteristics ◽  
Table Tennis ◽  
Ball Speed ◽  
Tennis Players ◽  
Spin Speed ◽  
The Right

Abstract Background: A perfect stroke is essential for winning table tennis competition. A perfect stroke is closely related to reasonable stroke structure, which directly affects the stroke effect. The main purpose of this study was to examine the correlations between the structural characteristics of stroke and the stroke effect. Methods: Forty-two young table tennis players were randomly selected from China Table Tennis College (M age = 14.21 ± 2.13; M height = 1.57 ± 0.14 m; M weight = 46.05 ± 6.52 kg, right-hand racket, shake-hands grip, no injuries in each joint of the body). The high-speed infrared motion capture system was used to collect the data of stroke structural characteristics, and the high-speed camera was used to measure the spin speed of the stroke. The influence of striking structural characteristics on striking effect was examined.Results: The time duration of backswing and forward motion were significantly correlated with ball speed (r = -0.403, p < 0.01; r = -0.390, p < 0.01, respectively) and spin speed (r = -0.244, p = 0.027; r = -0.369, p < 0.01, respectively). The linear velocity of right wrist joint was positively correlated with ball speed (r = 0.298, p < 0.01) and spin speed (r = 0.238, p = 0.031). The angular velocity of right elbow joint and right hip joint were positively correlated with ball speed (r = 0.219, p = 0.013; r = 0.427, p < 0.01, respectively) and spin speed (r = 0.172, p = 0.048; r = 0.277, p = 0.012, respectively). The angular velocity of right knee joint had a significantly negative correlation with placement (r = -0.246, p = 0.026). The angular velocity of right ankle joint had a significantly positive correlation with the ball speed (r = 0.443, p < 0.01).Conclusions: The time allocation of the three phases of backspin forehand stroke had an important impact on stroke effect, especially the ball speed and spin speed. The ball speed of the stroke was mainly affected by the translation of the right wrist joint. The spin speed of the stroke was mainly affected by the translation of the right wrist joint. The placement of the stroke was mainly affected by the rotation of the right knee joint.

scholarly journals Kinematic Comparison on Lower Limb Kicking Action of Fetuses in Different Gestational Weeks: A Pilot Study

Healthcare ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1057
Author(s):  
Hairong Chen ◽  
Yang Song ◽  
Rongrong Xuan ◽  
Qiuli Hu ◽  
Julien S. Baker ◽  
...  
Keyword(s):  
Angular Velocity ◽  
Knee Joint ◽  
Ankle Joint ◽  
Lower Limb ◽  
Peak Level ◽  
Musculoskeletal Development ◽  
Kinematic Characteristics ◽  
Significant Difference ◽  
Fetal Movements ◽  
The Mean

The fetal movements during different gestational weeks are essential for normal musculoskeletal development. The kinematic characteristics of fetuses with small differences in gestational weeks may be different and important. Ultrasonographic videos of fetal kicking action and plantarflexion action were collected from three healthy pregnant women (24, 27, and 30 gestational weeks) with normal fetal development. The kinematic characteristics, including angular range and angular velocity, were analyzed. These kinematic parameters were measured using simi motion. The final knee angle was found to decrease with progressive gestational weeks. Compared with 24 w, the knee joint angle at 27 w and 30 w was significantly reduced at the end of a kick-type movement (p < 0.01). Except for the mean angular velocity of the knee joint, there were no significant differences in the other conditions. The value at 30 w for mean angular velocity was significantly higher than that at 24 w (p = 0.02). In the ankle joint, no significant differences were observed between different conditions. Therefore, we can conclude that there was no significant difference in the kinematic characteristics of the ankle joint for small gestational age gaps, but there was a significant difference in the knee joint. As the gestation weeks increase, the range of kicking motion tends to decrease. The reason may be that with the increase of gestational weeks, fetal lower limb musculoskeletal development is gradually enhanced; the slower growth rate indicates that development reaches a peak level in weeks 24 to 30.

scholarly journals Basketball Game-Related Statistics that Discriminate Between European Players Competing in the NBA and in the Euroleague

2018 ◽  
Vol 65 (1) ◽  
pp. 225-233 ◽  
Author(s):  
Rūtenis Paulauskas ◽  
Nerijus Masiulis ◽  
Alejandro Vaquera ◽  
Bruno Figueira ◽  
Jaime Sampaio
Keyword(s):  
Body Size ◽  
Canonical Correlation ◽  
Body Height ◽  
Basketball Players ◽  
Performance Variables ◽  
Significant Function ◽  
Basketball Game ◽  
The Matrix ◽  
Point Field ◽  
Performance Profiles

AbstractThis study aimed to identify the game-related statistics that discriminated between Euroleague basketball players and European basketball players playing in the NBA, when competing in the same event (EuroBasket 2015). There was a total of 78 matches played by 24 teams in two groups of analysis: NBA, participants in the European Championship who played in the NBA season of 2014-2015 (n = 26); Euroleague, participants in the European Championship who played in the Euroleague season of 2014-2015 (n = 82). The players’ performance variables were normalized to the time they spent on the court. To identify which variables best discriminated between the NBA and the Euroleague performance profiles, a descriptive discriminant analysis was conducted. Structure coefficients (SC) from the matrix greater than |0.30| were interpreted as meaningful contributors to discriminating between the groups. The results revealed a significant function (p = 0.008, canonical correlation of 0.51, Λ = 0.74, reclassification = 84.2%) and substantial performance differences in game-related statistics much related to the influence of body size (body height and mass), such as two-point field goals made (SC = 0.42) and missed (SC = 0.40), free-throws made (SC = 0.55), defensive rebounds (SC = 0.62), blocks (SC = 0.48) and suffered fouls (SC = 0.34). No differences were found at the level of game-related statistics indirectly related to perception, such as assists, turnovers or steals. Also, the greater body size in NBA players was likely related to higher variability in performance, thus, being an important topic for coaches and recruiters to analyse.

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