sports floor 1. Comfort issues: Professional PVC plastic sports flooring surface can be hit, the moderate deformation, like a seal within the air mattress, when you slip in wrestling or the time, closed foam backing layer technology provides a buffer to the maximum reduce sports injuries. 2. Tremor of the problem: Tremor is the deformation of the floor by the impact and scope, the greater the scope of the easier tremor caused fracture. Tremor in two ways: point tremor and regional tremor. 3. Vibration absorption of the problem: In movement formed Impulse in PVC plastic sports floor surface will produce vibrations, the floor of the structure must have the shock absorption function, which is that the floor should be absorbed impact energy of the performance of athletes in the PVC plastic sports floor, which are anti-impact force compared to the hard ground, such as the movement in the concrete floor to be smaller and more. Namely: Athletes jump down to the floor, the most must be at least 53% of the amount over the impact absorbed by the floor to protect athletes ankle, meniscus, spinal cord, brain function, people will not be in sport injury. The protection is also considered a sport in PVC plastic floor exercise does not affect adjacent personnel. This is the German DIN standards described in the shock absorption, vibration, deformation and extension of the concept of deformation. 4. Friction coefficient of the problem: Research shows that 12% of basketball players were injured in the rotation in situ process. Floor exercise floor friction coefficient shows whether the friction is too strong (which would reduce the flexibility of rotation) or too slippery (which will increase the risk of slipping). Taking into account the mobility and safety of athletes, the friction coefficient in the best value should be between 0.4-0.7. PVC Flooring friction coefficient generally remain in the coefficients, professional million Olympic PVC Flooring friction coefficient of 0.57, it has sufficient and appropriate friction, can guarantee the stability of motion, while in all direction of movement to maintain consistent friction properties and regularity to ensure that mobile and flexible in situ rotation without any obstruction. 5. The ball back to the question of flexibility: Elasticity of the test ball is basketball fell from 6.6 feet on the floor exercise, tested basketball rebound height. The data expressed as a percentage, to rebound the basketball on concrete floors contrast with standard height, reflecting the rebound height difference. Competition rules require indoor ball games, sports games with that level or training, such as basketball and other sports in the off ball movement and ball rebound, ball in the venue requirement rebound on the ground more factor should be greater than or equal to 90% professional million Austrian PVC Flooring has outstanding performance and stability ball rebound, there is no flexibility on the floor dead, compared to its rebound coefficient can reach 98% maximum. 6. Movement of energy returned to the question: This refers to the PVC plastic sports floor exercise in the athletes return to sport energy, to improve athletic performance.