Drift boarding is less than cycling is less than running in terms of damage to the knees.
1, obviously running does the most damage to your knees. Running every step of the knee to buffer the impact of the body, the body's center of gravity is very large, a lot of energy to do useless, two of these energy to rely on the knee, ankle absorption. Especially when running posture, power way is not correct, more obvious.
2, bicycle in the movement of almost no center of gravity undulation, energy used to overcome the horizontal direction of the wind resistance, friction. Knee force is small, impact is small, low frequency. So much better than running from a fatigue failure perspective.
3, drift board, if the movement is skilled, posture is correct, in fact, drift board power rely on the waist, not the knee, not the knee, not the knee, not the knee specific point is the waist for the cross-section, the upper and lower body cycle line in the opposite direction of the twist, rely on the ground reaction force forward. The same center of gravity undulation is small, the force is mild, the impact is small. The more tired the way of movement, the movement of the knee, other joints, the greater the damage, because do more useless work, have to be absorbed by the joints into internal energy.
Knee joints are most likely to have the following three kinds of damage:
One, cartilage damage:
Knee cartilage thickness is about two dollar coin so thick, that is, 3 to 4 millimeters. The main symptom of knee cartilage damage is pain and swelling. This is because the swelling is usually due to the cartilage after it is broken, there will be something on the surface, these things will fall down and fall into the cavity of the joint, this will stimulate some of the synovial membrane around the inflammation, the synovial membrane will change from yellow to red, so it will be very painful, and at the same time it will ooze out the fluid, so it will be swollen.
Two, meniscus tear:
The role of the meniscus is to: stabilize, withstand gravity, lubricate the meniscus injury of the main four manifestations are: swelling, pain, ringing, lock. In fact, in life, any kind of knee twisting and strenuous activities will damage the meniscus, like shuttlecock, lifting heavy objects, climbing stairs, jumping rope, stilt legs, squatting and wiping the ground, intense square dance, and so on. The other shuttlecock is most likely to damage the meniscus.
Because the impact of kicking the shuttlecock is very large, and there will also be twisting action. Young people should be early surgery after meniscus injury, because the later the meniscus tear will be the greater, and meniscus will be torn with the time and degeneration, that is, aging, aging after the blood vessels will be less, any tissue to heal the most important core of things is the blood vessels, there is a blood supply to provide nutrients in order to heal.
Three, ligament tears:
Kicking a soccer ball can easily lead to ligament injuries, because ligaments have a slight elasticity, if the force is too much, the ligaments may be pulled to break. The serious consequence of untreated ligament damage is likely to be bone spurs.
Reference: People's Daily Online - How to exercise with knee injuries