Repair Effect of Nanomaterials on Meniscus Injury Induced by Calisthenics Exercise

Table 1

Incidence frequency of high-level competitive aerobics athletes in China in the past year.

Sport level frequency	1-2 times	3-5 times	6 times
National level	40%	37%	23%
National master	20%	38%	42%
International master	10%	12%	78%