# Defining the Quantitative Criteria for Two Basketball Shooting Techniques
## 2 Materials and Methods
In the execution of the two shooting techniques, the following variables were observed:  
* Jump_L--jump length (horizontal component--toward the basket);
* Pelvis_P--the difference in the position of the pelvis from the rest phase to the highest position during the shot (vertical component);
* Hand_rec--the angle in the hand joint at the moment of receiving the ball;
* Sh_shoot--shoulder angle at ball release;
* Hand_H--the maximum height of the hand during releasing of the ball;
* Hand_V--maximum velocity of the hand segment (horizontally);
* Forearm_V--maximum velocity of the forearm (horizontally);
* Upperarm_V--maximum velocity of the upperarm (horizontally);
* EA--entry angle of the ball when approaching the rim;
* PSS--player shooting speed (contact time with the ball). Protocol of investigation: The measurement begins with defining the anthropometric characteristics necessary for comparing participants and calibrating the measuring device. Subsequently, the participant is outfitted with the kinematic system, including the corresponding shirt and 17 sensors secured with straps. The participant then initiates a standardized warm-up protocol consisting of straight running, lateral running, running drills, and dynamic stretching in place and in motion. At the end of the warm-up, specific warm-up activities with a basketball are performed, including practice shots to acclimate the participant to the added ball from the basketball machine (Dr. Dish) and warm up the shooting motion. Before the actual measurement, a calibration of the kinematic system is conducted, followed by a series of 6 shots. Upon the signal from the measurer, recording is initiated with cameras, the basketball machine, the 94 Fifty ball, and the measurement of kinematic parameters. The testing is conducted using two shooting techniques: shot with one hand from the spot (G1) (Figure 1) and jump shot (G2) (Figure 2). Both techniques are performed from a distance for a 3-point shot (6.75 m). Five successful shots for each subject were included in the analysis. Then, the measurement of motor skills begins, following the sequence:  
1. PLANK
2. MED_THR
3. SQJ
4. CMJ
5. POL_BAC  
Figure 1: _Cont._  
With the completion of the motor skills testing, the participant has finished participating in the research. Classification of Participants into Groups  
A team of 5 experts (professors and basketball coaches) decided whether the participant belonged to a jump shot group or a shot with one hand from the spot group based on the initially executed shots. Statistical analysis: Using G*Power (v.3.1.9.2), the total sample size (N = 90) required for the research was calculated, considering a significance level of \(p<0.05\), a statistical power of 0.8, an effect size of 0.25, and 2 groups of participants (shooters). For statistical data analysis, the software package Statistica v.13.05.0.17 (TISCO Software Inc., Palo Alto, CA, USA) was employed. Basic descriptive parameters were calculated for all observed variables. The Shapiro-Wilk test was used to assess the normality of the distribution  
Figure 1: Kinogram of the shot with one hand from the spot performance from Xsens MVN Analyze software 2022.0.2. Figure 2: Kinogram of the jump shot performance from Xsens MVN Analyze software 2022.0.2.  
of observed variables. Multivariate Analysis of Variance (MANOVA) was utilized to determine differences in kinematic parameters between the two observed groups. Similarly, MANOVA was employed to test differences between groups in tests assessing motor skills.