Treadmills allow you to run or walk inside your house at any time; however, the impact of walking or running may result in discomfort, pain or injury. Although an exercise program can be modified to strengthen the joints and modify the intensity, another approach is to minimize the blow of joints. Many treadmills have special belts, covers and damping systems designed for this reason. Consult your doctor for specific recommendations and instructions before starting an exercise program.
In a study published in the November 2000 issue of "Medicine and Science in Sports and Exercise", The researchers found that hard surfaces to run do not absorb as much impact as softer surfaces. The treadmill covers the entire surface for running and is available in many materials and designs. Although the absorbent straps reduce the impact, they can increase the use of other parts of the treadmill.
The cover is directly below the moving belt and also affects shock absorption. The treadmill covers are usually made of wood or synthetic materials. Some only have shock absorption where the foot lands, so running or walking feels natural. The material of the cover and the absorption design are described in the characteristics of the machine. The covers wear out over time, so choose a cover that is sturdy as well as absorbent.
Shock absorbers and springs
Shock absorbers and springs are sometimes used for treadmills with shock absorption. The air cushions load some of the weight of the machine and help to absorb the impact every time the foot hits the surface; however, air cushion systems require more maintenance than other treadmills. For example, some manufacturers recommend servicing air cushions every 150 miles. Avoid the springs because the absorbed shock is released directly back to you.
Woodway is the leading brand in absorbent and reliable treadmills. For 2010 the Woodway treadmills had been bought by the 97 by the way from the teams of the National Football League, as well as by several universities, reality shows and military organizations. The patented belt of this brand is made of thin rubber splints that slide on low friction bearings. Researchers at the Deutsche Sporthochschule in Germany determined that the smoothness of the Woodway strap is ideal for reducing shock without changing the mechanics of the body.
There is a wide variety of Woodway models available. Some with descent and reverse modes, as well as an option with no engine that allows you to work harder when pushing the treadmill yourself. This means that you can achieve more work with less shock.