2. Generally, 30 minutes before aerobic exercise is a warm-up exercise, so aerobic exercise should be kept for at least 30 minutes, because after 30 minutes of warm-up, fat will dissolve. But if the time is too long, it is easy to dehydrate. So generally speaking, aerobic exercise, we recommend more than 30 minutes, within 60 minutes. Adjust yourself according to your physical strength.
As for the knee injury, it has little to do with the time of cycling. The key is the way of exerting force and riding posture.
4. The spinning bike has wheel resistance adjustment; Riding with high resistance is not recommended. It is recommended to ride with as little resistance as possible, as long as there is no feeling of stepping on the air. At this time, the leg can keep a high pedaling frequency, but it will not be pedaled with great force. Avoid knee injuries.
When an ordinary vegetable cart is riding, its body basically sits straight on the seat. At this time, the quadriceps femoris of the thigh is mainly working. The persistence time is not long, and it is easy to stand on the pedal when exerting force, which leads to an increase in the impact on the knee.
6, sports drivers, the body as close as possible to the thigh; At this time, in addition to quadriceps femoris, gluteus maximus was also mobilized. The two largest muscle groups in the body work together to keep aerobic exercise for a long time without hurting the knees.