The size range of PVC baseball suitable for teenagers is usually consistent with that of standard training balls to meet their physical development and skill improvement needs. The following is the specific analysis:
Diameter range:
The diameter of the PVC baseball used by teenagers is usually 7.2 centimeters, which is consistent with the standard baseball and conforms to the sports norms. The choice of diameter should take into account both the hitting feel and the stability of flight. A 7.2-centimeter ball can balance the difficulty of force transmission and control, making it suitable for teenagers to gradually adapt to the requirements of the competition.
Size correspondence:
A baseball with a diameter of 7.2 centimeters usually corresponds to the “9-inch” specification, which is the common standard in baseball. Spheres of this size are widely used in youth training and competitions. They can not only meet the standardization of technical movements but also enhance the training effect through standardized design.
Applicable scenarios and requirements:
Enlightenment and basic training: For the early training of teenagers, a soft PVC baseball with a diameter of 7.2 centimeters can be used. Its soft material can reduce the risk of injury while maintaining a standard size to meet the needs of long-term training.
Advanced training: As their skills improve, teenagers can continue to use hard or soft PVC baseball of the same size. By adjusting the inner core material (such as cork + rubber composite core), they can control the elasticity to meet the needs of different training stages.
Usage scenario adaptation
Training stage: A ball with a diameter of 7.2 centimeters can effectively improve the accuracy of hitting the ball and help teenagers master the power application skills.
Competition requirements: This size complies with international competition standards, facilitating seamless transition for teenagers in official events and reducing adaptation issues caused by equipment differences.
Safety and durability
The softness and impact resistance of PVC material can reduce the risk of collision injuries, making it suitable for teenagers to use. Meanwhile, the high-density stitching reinforcement process can enhance the durability of the sphere and reduce the wear and tear during training.