Influence of Selection of Release Angle and Speed on Success Rates of Jump Shots in Basketball

Abstract

Enhancing the successful jump-shot percentages in basketball is critical for winning a game. A selection of release parameters and variability can influence the success rate, but the actual selection of the release parameters and variabilities in those during jump shots and the influence of this selection on success rate have not been investigated and are not understood well. Thus, the purpose of this study was to investigate the influences of the selection of release angle, release speed and spin rate, and variability on the success rate of jump-shots in basketball. Ten male collegiate basketball players participated in the study and actual ball trajectories for the jump-shots from the free-throw (FT) and three-point (3P) lines were recorded by the three-dimensional motion analysis system. The experimental data was compared with the theoretical optimal release parameters. We found that the players with higher success rate in FT shots had a higher release position, a lower release velocity, and a larger margin for error for the release speed. On the other hand, for the 3P shots, the player with a larger margin for error for the combination of the release speed and angle had higher success rate. Variability in release parameters did not have significant correlation with the success rate. Thus, it can be said that selecting the release parameters that allow greater margin for error was important for increasing the success rate. Also, depending on the required release speed or the shooting distance, the strategies for the selection of the release parameters must be adjusted to increase the success rate in jump-shots.

Kinetic and Kinematic Characteristics of Proficient and Non-Proficient 2-Point and 3-Point Basketball Shooters

“…Similarly, in a recently published study, forearm positioning was found to be a key kinematic variable capable of distinguishing between proficient and non-proficient free-throw shooters [ 6 ]. To couple with previously mentioned findings Inaba et al [ 7 ] found that players with superior mid-range jump-shot performance had greater release height, lower release velocity, and a larger margin of error for the release speed. The authors also suggested that an increase in backspin rate may help with maintaining optimal release parameters such as speed and angle of the release, especially at lower release heights [ 7 ].…”

Skilled strategies of release parameters for accurate free-throw shooting in the presence of motor noise

“…successful shot without contacting with hoop) based on (Brancazio, 1981), and green surrounding area represents a set of variables which result in a hoop shot ( i.e. possibly successful shot by contacting with hoop) as defined by the landing at ±5 cm relative to the swish shot as in the study of Inaba et al (2017). (d) The result error Δ Y caused by the execution error Δ θ , Δ v from a zero-error startegy.…”

“…release speed, angle, spin, and position) were defined from the center of ball at the time of release. The details of the calculation for experiment 1 and 2 are described in the studies of Nakano et al (2018) and Inaba et al (2017), respectively.…”

“…The green surrounding area represents the set of variables that result in a hoop shot ( i.e. a possibly successful shot that contacts with the hoop), defined by the shot landing ±5 cm relative to the swish shot, as in the study of Inaba et al (2017). The curved red line represents the set of variables that result in a zero-error ( i.e.…”

A System for Analysing the Basketball Free Throw Trajectory Based on Particle Swarm Optimization

“…According to Ref. [44], we also present the relationship between α 1 and v 1 for all competitors and for individual body height groups as shown in Figure 8. The blue dotted lines present the typical values for the analysed groups.…”