Mat-type exercise device

A mat-type exercise device comprising,

• a device body which provides an exercise load;
• a cable which extends to an outside from the device body and transmits the exercise load from the device body;
• a plurality of wheel modules installed in the device body such that each of the wheel modules is capable of moving between a protrusion position at which the wheel module protrudes from a lower surface of the device body and an introduction position at which the wheel module is introduced to an inside of the lower surface of the device body;
• and
• a plurality of switching modules which switch a position of at least one of the plurality of wheel modules between the protrusion position and the introduction position,
• wherein
• the plurality of wheel modules are installed in pairs by being spaced apart from each other in width directions of the device body on opposite edges of the device body in longitudinal directions thereof,
• the plurality of switching modules are installed respectively on longitudinal opposite sides of the device body and switches a position of each of the pairs of wheel modules,
• the wheel module comprises a holding jaw part having a first surface directed to the introduction position and a second surface directed to the protrusion position, and
• each of the switching modules comprises a holding rib which is in contact with the first surface of the holding jaw part when the wheel module is located at the protrusion position such that the wheel module is maintained at the protrusion position, and which is in contact with the second surface of the holding jaw part when the wheel module is located at the introduction position such that the wheel module is maintained at the introduction position.