Sports training is with filling up

The utility model discloses a sports training is with filling up, including body, cavity and spring, the inside of body is equipped with a plurality of cavitys, and the inside of cavity is equipped with the spring, and first loop bar passes through the second loop bar and links to each other with first bolt, and first bolt links to each other with the second fishplate bar through first nut, and the second fishplate bar passes through the third pivot and links to each other with first fishplate bar, second nut and second bolt threaded connection, and second branch is passed through the second joint block and is linked to each other with the body. This sports training is with filling up through the cooperation of joint block and knee, can open or be folding the body, through second bolt andsecond nut, can make the body slide, has greatly made things convenient for the transport of body to shift the problem, through the cooperation of third loop bar and fourth loop bar, can carry out theangle modulation to the b