## 2 Materials and Methods
### Experimental Protocol and Evaluation Plan
Acceleration and injury prevention exercises were undertaken such as hand planks from a standing position, jumps with trot from midfield, sprint from prone, lunge with trunk twist, squats with jump, explosive push-ups, hamstring stretches on trot, forward strides, zigzag running, and pyramid stretches from quadrupled. A full recovery period was observed between attempts and between exercises. These exercises were selected for testing as they have all been used to improve basketball performance [44], followed by a specific description-justification of each exercise to be performed. Physical performance testsSeveral physical fitness tests representing different aspects of basketball and volleyball were used to assess physical performance in each of these sports. The tests took place in the afternoon on the respective days in the sports hall under the conditions of humidity and temperature described above. The order of the tests was as follows: squat jump (SJ), countermovement jump (CMJ), Abalkov jump (ABK), drop jump (DI), medicine ball throw (3 kg), speed test without change of direction (20 m), sprint repeat ability with change of direction (RSA), Illinois agility test with change of direction (COD), and Yo-yo IRT intermittent endurance test (II). Jumping (S), CMJ, ABK, DJThe Chronojump Bosco System(r) DIN-A1 contact platform [45] was used to collect these data. Controlled by a chronometric device that oversees timing the state changes in the detection device, the error of the microcontroller is 0.1%, giving a validity of 0.95 (CCI). This device (Chronopic 3) was validated by the ACSM. Across the whole spectrum studied, with a low signal (corresponding to the contact time in a jump) the mean error was 0.04 \(\pm\) 0.18%, while with a high signal (time of flight) the mean error was 0.05 \(\pm\) 0.19% [46]. Squat jump (SJ)This exercise assesses the maximum concentric dynamic strength of the lower limbs. Its relation to basketball refers to jumping capacity and acceleration capacity [47]. It is an indicator of the percentage of fast fibers. To this manifestation is added a second factor of \"contractile capacity\", related to the capacity to synchronize the contraction of the fibers to have a more homogeneous value of instantaneous recruitment. This index represents the maximum slow force developed in a slow concentric exercise derived from Hill's Law (squats or press at 45\({}^{\circ}\)). To reduce the margin of error, great care must be taken in the execution of the technique to ensure there is no repulsion before the jump and that it really starts from a static position of a half squat. Couremovement Jump (CMJ) [48]  
Participants started in a standing position with both feet together and were asked to jump as high as possible with a quick countermovement, keeping their hands on their hips. The flight time was used to calculate the change in the height of the body's center of gravity. The calculation of jump height took the take-off and landing positions of the body's center of gravity into consideration. Two trials per participant were allowed, separated by 1 min of recovery. The best result was recorded. The CMJ is characterized by a very low intertrial variability (coefficient of variation of 3.0%). The CMJ test showed the highest relationship with the explosive power factor (r = 0.87), i.e., the highest factorial validity. Based on these results, it can be concluded that the CMJ is one of the most reliable and valid field tests for the estimation of lower limb explosive power. Abalkov's Jump (ABK)[PERSON]'s jump assesses the explosive strength, as well as the maximum power of the lower body with the idea of estimating the \"reflex-elastic-explosive\" manifestation. Considering the execution time of this exercise and the fact that approximately 50% of this time is damping (mainly eccentric), the stretch reflex is released in this phase and not in the acceleration phase.