Automatic treadmill

A treadmill having track means for rotating a rotatable belt for a user to stand upon, driving means with a power apparatus connected to said track means for driving said rotatable belt to rotate within a range of speeds ranging from zero to a predetermined maximum and slope adjusting means associated with said track means for inclining said track means, comprising:

• a microprocessor controller having stored therein software programs corresponding to a function and a control arrangement for the function, said controller further including data input means for inputting reference control data, data storage means for storing data, and display means for displaying data;
• and
• exercise data detecting means for sensing exercise data and inputting the same to said controller, said exercise data detecting means including means for detecting a user's position and means for inputting data representative of the user's position relative to said controller for adaptively changing the speed of the rotatable belt to keep the user at a certain position on said track means, wherein said slope adjusting means is controlled responsive to said exercise data by said controller to change the slope of said track means, and said driving means is controlled by said controller responsive to said exercise data to vary the speed of rotation of said rotatable belt.