Impact of Fatigue on Accuracy and Changes in Certain Kinematic Parameters During Shooting in Basketball (original) (raw)
Related papers
The Effect of Fatigue on the Kinematics of Free Throw Shooting in Basketball
Journal of Human Kinetics, 2010
Fatigue is an indispensible part of a basketball game which may affect an athlete's shooting kinematics. Although kinematic analyses of various sports related movements were extensively done, this study is the first to consider the effects of fatigue on the kinematics of free throw shooting. After measuring the resting heart rate, ten collegiate level, male basketball players (21.8±1.6 y; 192.8±3.6 cm; 84.1±8.5 kg) were asked to perform free throws. Two successful and two unsuccessful free throws were selected. Thereafter, participants were asked to complete the fatigue protocol, which included 30m sprints and 5 vertical jumps at each end, until they reached volitional exhaustion. Additional two successful and two unsuccessful free throws were collected. All shots were recorded by using two digital cameras operating at 60 Hz and placed in a stereoscopic view. The elbow, trunk, knee and ankle joint angles were measured before and after the ball release and at the ball release point. The selected joint angles were compared between successful and unsuccessful free throws, as well as before and after the completion of fatigue protocol. The results demonstrated that fatigue did not effect free throw shooting kinematics (p>0.05) and there was no significant joint angle difference between successful and unsuccessful shots (p>0.05). This study suggested that high level athletes are able to cope with the possible detrimental effects of fatigue while performing coordinated movements such as free throw shooting.
2008
Despite the acknowledged importance of fatigue on performance in sport, ecologically sound studies investigating fatigue and its effects on sport-specific skills are surprisingly rare. The aim of this study was to investigate the effect of moderate and high intensity total body fatigue on passing accuracy in expert and novice basketball players. Ten novice basketball players (age: 23.30 ± 1.05 yrs) and ten expert basketball players (age: 22.50 ± 0.41 yrs) volunteered to participate in the study. Both groups performed the modified AAHPERD Basketball Passing Test under three different testing conditions: rest, moderate intensity and high intensity total body fatigue. Fatigue intensity was established using a percentage of the maximal number of squat thrusts performed by the participant in one minute. ANOVA with repeated measures revealed a significant (F 2,36 = 5.252, p = 0.01) level of fatigue by level of skill interaction. On examination of the mean scores it is clear that following...
Journal of sports science & medicine, 2006
Despite the acknowledged importance of fatigue on performance in sport, ecologically sound studies investigating fatigue and its effects on sport-specific skills are surprisingly rare. The aim of this study was to investigate the effect of moderate and high intensity total body fatigue on passing accuracy in expert and novice basketball players. Ten novice basketball players (age: 23.30 ± 1.05 yrs) and ten expert basketball players (age: 22.50 ± 0.41 yrs) volunteered to participate in the study. Both groups performed the modified AAHPERD Basketball Passing Test under three different testing conditions: rest, moderate intensity and high intensity total body fatigue. Fatigue intensity was established using a percentage of the maximal number of squat thrusts performed by the participant in one minute. ANOVA with repeated measures revealed a significant (F 2,36 = 5.252, p = 0.01) level of fatigue by level of skill interaction. On examination of the mean scores it is clear that following...
Skeletal muscle fatigue does not affect shooting accuracy of handball players
Isokinetics and Exercise Science, 2019
BACKGROUND: Shooting accuracy and ball speed are important factors relating to scoring in handball that could be affected by skeletal muscle fatigue. OBJECTIVE: To explore the effects of muscle fatigue on male handball players' shooting accuracy and ball speed. METHODS: Sixteen elite handball players (Mage = 17.1 ± 1.7 years) participated in the laboratory and the field-testing sessions. Running speeds equal to 75% of participants' maximal oxygen uptake (VO2max) values from laboratory tests were used as the initial velocity for the 30-15 intermittent fitness test (30-15IFT) in the fatigue protocol. Participants shot to the target at random visual signals placed behind the target before and after fatigue. We used an accelerometer and a radar gun to measure wrist acceleration and ball speed, respectively. We also recorded numbers of accurate and inaccurate shots. RESULTS: There were no significant differences between pre-fatigue and post-fatigue protocols in terms of accurate and inaccurate shots, and ball speed. Only wrist acceleration in the Y axis (Mpre-fatigue = 33.12, SD = 1.17msec; Mpost-fatigue = 34.50, SD = 1.21msec) was affected by the fatigue protocol in inaccurate shots (p = 0.042). CONCLUSIONS: Muscular fatigue does not affect shooting accuracy and ball speed in male handball players.
The relationship between physical fitness and shooting accuracy of professional basketball players
Motriz: Revista de Educação Física, 2014
The aim of this study was to examine the relationships among physical fitness of professional Bosnian basketball players (n = 38) and shooting accuracy during one basketball season. A related, secondary aim was to examine relationships between basketball shooting assessments and competitive shooting accuracy during game play. Physical fitness components included: muscular endurance and aerobic endurance, lower and upper-body power, speed, agility, anaerobic capacity and anaerobic power. The specific basketball shooting accuracy was assessed by stationary and dynamic shooting assessments. Competitive shooting accuracy was represented by data collected during one basketball season for each player (free throw, field goal, and three-point %). Results of the regression analyses showed that there were significant positive relationships among shooting assessments and competitive shooting accuracy during game play. The relationship was stronger when the dynamic shooting tests were applied c...
Journal of human kinetics, 2013
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 ...
Influence of graded physiological exertion on shooting ability in soccer
Although many studies examined impact of fatigue on shooting success in soccer, precise relation between progressive exertion and shooting ability was still not revealed. Therefore, purpose of this study was to identify a specific phase of progressive exertion that may initiate severe deterioration in shooting performance. A sample of 28 semi professional soccer players performed pretesting procedure, experimental (EP) and control (CP) protocol on 3 separated days. Pretesting included all-out treadmill testing, estimating their lactate thresholds and establishing 5 individual intensity zones (IZs). The EP conditions required players to perform shooting test following each speed-level of progressive, shuttle run intervention beginning at running speed 8 km/h and increasing for 1 km/h until exhaustion. The CP conditions incorporated only 8 repeated shooting trials every 3 minutes. Each shooting trial consisted of 10 shooting attempts used to measure 3 variables: shooting accuracy (SA;...
Assiut Journal of Sport Science and Arts, 2016
The aim of the research is to determine the stability degree of the skill performance through the relative change in the skill and mechanical characteristics of the movement. The plays condition was changed and they reached the fatigue stage as they do during the match through the free shooting shooting during 60 seconds. It is a test to measure fatigue during shooting. A synchronization analysis for muscle and biomechanical characteristics were usedfor the best 3 players at the aiming skill and the free shooting skill in season 2014-2015. The electrodes were placed on 8 muscles, namely, (Deltoied-poterior, antherior, Triceps brachii, Bicepbrachii, Extenor of the writ, Flex carpiulnairs, Gastrocnemius-medil, Quadricepsfemoris). Results shows significant statistical correlation between the Mean Power Frequency (MPF) index and the movement quantity index of the body weight centers during the first attempt. 45 values of values ranged between (0.751 *: 0.978 *). There was a significant statistical correlation between the Averaged EMG (AEMG) and the motor index of the body weight centers during the first attempt. 39 values with values ranged between (0.764 *: 0.997 *). Based on the results it seems that the trainers need to train their players to perform in different circumstances until their skill level is stable to overcome these conditions, so the coaches will not need to replace their tired players to perform free throw.
The effects of aerobic fatigue on jump shot kinematics in team handball players
Journal of Biomedical Engineering and Informatics, 2015
Background: Aerobic fatigue from running may contribute to altered kinematics and as a result the possibility of injury exists. The purpose of this study was to examine the effects of aerobic fatigue on jump shot kinematics in team handball players. Methods: Ten male team handball players (23.60 ± 3.06 years; 184.68 ± 8.78 cm; 84.76 ± 9.23 kg) volunteered. An electromagnetic tracking system was used to examine the kinematics of the jump shot prior to and following aerobic fatigue. The fatiguing protocol consisted of running to exhaustion at a speed that corresponded with 80% of their heart rate maximum. Results: Significant pelvis and trunk kinematic differences were observed following the aerobic fatigue protocol. For both the trunk (F6, 54 = 5.10; P < .01; power = 0.99) and pelvis (F3, 27 = 14.47; P < .01; power = 1.00) a three-way interaction of event x time x direction was observed. At foot contact, significant differences were observed for pelvis lateral flexion, pelvis r...
Evaluating the Effects of Match-Induced Fatigue on Landing Ability; the Case of the Basketball Game
International journal of exercise science, 2021
This paper examines the effect of match-induced fatigue on lower limb biomechanics, in the case of a basketball game. For this purpose, sixteen male basketball athletes, ages 18 to 22, performed a jump-landing task prior and post a recreational basketball game. The Landing Error Scoring System (LESS) was used to examine the biomechanics of landing. The Vertical jump (VJ) and the Borg Rating of Perceived Exertion (RPE) scale pre- and post-game were employed to assess the level of fatigue induced by the basketball game. In order to compare pre and post measurements, t-tests for dependent samples were used. The performance of the VJ test post-game was found to be significantly lower (t (15) = 3.83, p = 0.002) showing a large effect (Cohen's d = 0.9) compared to pre-game measurements. Further, the LESS scores were significantly (t (15) = 2.33, p = 0.034) higher post-game with a medium effect (d = 0.5). The differences in LESS scores were due to errors in the landing technique which ...