Fitness equipment is a large group of tools that are used in exercise and are referred to also as exercise equipment. These can include simple items such as balls, track shoes and skipping ropes as well as more complex pieces of equipment such as treadmills, weights, bicycles and many others. Today a wide range of fitness equipment is available for sale with new designs constantly being produced due to the high demand for equipment that is effective in building muscles and strength as well as for losing weight.
Some of the types of fitness equipment available for use can be classified according the type of exercise for which they are built. The first class to be discussed is the strength training equipment. These include free weights and machines referred to as the resistance machines.
The most common type of resistance machine is one that uses gravity as a resistance source. This design is used mainly in weight machines. Gravity in combination with a simple design of pulleys, wheels and inclines, uses a percentage of the weight of the user as the resistance transferred. Other types of resistance machines can use other forces other than gravity to provide...