What are the dangers of treadmills?

With the increasingly fast pace of life nowadays, everyone has fewer and fewer opportunities to go out for a run. Basically, people go out by car or by bike, and few people can have a good and enjoyable run outside. So now everyone will buy a treadmill at home, and more people will choose to run at home, or sweat profusely on the treadmill in the gym. But you know what? While you are running and exercising on a treadmill, you are also suffering from many hazards of the treadmill.

Increasing the incline will only increase the stress on your knee joints! Just like climbing a mountain puts a lot of pressure on the knee joints. If your knee joints are not in good condition, it is recommended that you do not increase the slope and just run normally. In fact, running on a treadmill is still very good. Most treadmills have shock-absorbing design, which will reduce 30% to 40% of the impact on the knee joint compared to running on the road. Data on the pressure of body position on the knee joint: The human knee joint is the largest joint of all joints and the main force bearing body weight. It is composed of the lower end of the femur and the upper end of the tibia, with the patella in front, and a "cushion" in the middle, namely the meniscus, surrounded by strong joint capsules, muscles and ligaments to ensure the stability of the joint. The load on the knee joint varies with the body's movement and gait.

The static force on the knee joint in standing position (both feet on the ground) is 0.43 times the body weight, while it can reach 3.02 times the body weight when walking and 4.25 times the body weight when climbing.

So I suggest that if you must use a treadmill to run, it is better not to increase the slope. In case your knees are not in good condition, they will be injured due to increasing the slope. In fact, running on the road is the best, longest, most natural and safest method. Although running on a treadmill can achieve the effect of running, it is far less fun than running a long distance.