Patent ID: 7524272

Claim:
A treading exerciser assembly comprising: a) a treadmill including a movable surface; b) an upper body exerciser coupled to the treadmill and adapted to be utilized by a user on the treadmill, the upper body exerciser comprising: i) a torsion spring having a first end and a second end; ii) a first user member adapted to be engaged by a user's hand and movable from a first start position to a first extended position, the first user member being coupled to the first end of the torsion spring and being biased toward the first start position by the torsion spring; and iii) a second user member adapted to be engaged by a user's hand and movable from a second start position to a second extended position, the second user member being coupled to the second end of the torsion spring and being biased toward the second start position by the torsion spring, the retractor simultaneously biasing the first user member and the second user member toward the first start position and the second start position, respectively, wherein the torsion spring provides a first retraction force to the first user member, and wherein the torsion spring is coupled between the first user member and the second user member such that movement of the second user member from the second start position to the second extended position causes the first retraction force applied by the torsion spring to the first user member to increase.