Fitness glider exercise device

An exercise device to support a user at a portion of a back of the user during a performance of a squatting exercise by the user, the performance of the squatting exercise by the user occurring while the back of the user is displaced vertically adjacent to a planar vertically oriented surface, the exercise device comprising:

• a) a plurality of rolling members having a bearing plane, the rolling members to contact the planar vertically oriented surface during the performance of the squatting exercise generally at the bearing plane of the rolling members, the rolling members to provide for a smooth rolling contact of the exercise device with the planar vertically oriented surface during the performance of the squatting exercise;
• b) a back support surface to contact the portion of the back of the user during the performance of the squatting exercise, the back support surface positioned on the exercise device relative to the rolling members, the back support surface having an average spacing distance from the bearing plane of the rolling members;
• c) a grip member for grasping by the user during the squatting exercise, the grip member positioned on the exercise device relative to the back support surface, the grip member having an average spacing distance from the bearing plane of the rolling members and wherein the average spacing distance of the grip member from the bearing plane of the rolling members is significantly greater than the average spacing distance of the back support surface from the bearing plane of the rolling members;
• d) mechanical resistance means to provide for a mechanical increase in a resistance to movement from a first operational position relative to the planar vertically orientated surface to a second operational position relative to the planar vertically oriented surface during a winding of a mechanical member and a mechanical decrease in a resistance to movement from the second operational position relative to the planar vertically oriented surface to the first operational position relative to the planar vertically oriented surface during an unwinding of the mechanical member;
• and wherein the mechanical member of the mechanical resistance means further comprises a coil spring member.