Define Treadmill

Walk into any gym, and you're likely to see a row of treadmills. These workout machines make it possible to go for long walks and runs even when the weather outside is miserable, and for that reason alone, they are popular among exercise enthusiasts. Treadmills offer more than just a respite from weather, however. They allow you to control the difficulty, length and speed of your workout so you can track your skill and improvement.

Definition

A treadmill consists of a horizontal platform, which is slightly longer than the average stride length and is covered with a wide belt of fabric or flexible material. When the treadmill motor is activated, the belt moves, forcing anyone standing on it to begin walking or running. Treadmills usually have adjustable speed settings and may also be set at various levels of incline to simulate climbing a hill. A treadmill will generally feature a digital display and control panel, as well as safety handles.

Features

"Consumer Reports" tested several treadmills and found that most had similar features. These include electronic programming, a heart rate monitor and wide foot rails. Most treadmills have a safety key, which are required to start the machine. They clip to your clothing, so that if you fall, the key is pulled out of the machine and it stops automatically. Some treadmills also fold up for storage, which allows them to take up about half as much space as non-folding models.

Benefits

Treadmills are easy and intuitive to use, and they offer low-impact workouts. Their adjustable settings allow you to choose a workout level that suits your needs. Treadmills are often used in physical therapy, where they may be combined with other therapy techniques. A 2011 study found that spinal injury patients who walked on a treadmill with added weight support improved their speed, distance and stride. Patients using conventional physical therapy did not show the same improvements.

Safety

Mike Tyson's daughter died in a treadmill accident. Treadmills can be dangerous to children and adults alike. Look for a treadmill with a shutoff key, especially if you have young children in your home. Treadmills should be stable and feel solid, and they should be equipped with side rails or handles for balance. They should be lockable and positioned in such a way that the user can see anyone who is approaching.

Alternatives

Treadmills are approximately equivalent to walking or running outdoors. Going for a jog is as good for you as running on a treadmill, but much more affordable. If you choose, you may want to look for a treadmill that is powered by your own movement, rather than one that forces you to move at a designated speed. However, precise speed controls can be an effective tool for improving your pace. For a basic aerobic workout, Mayo Clinic adviser Edward R. Laskowski M.D. recommends an elliptical trainer over a treadmill. Elliptical machines can potentially give you a more complete workout, but with less stress to your knees, hips and back.