Abstract: A sewing machine type stepping foot trainer includes a base frame, a pivot frame pivotally mounted on the base frame, two spaced pedals mounted on the pivot frame to pivot with the pivot frame simultaneously, and a damping mechanism mounted between the base frame and the pivot frame to provide a damping effect to the pivot frame. Thus, the user's two feet step on the pedals to move the pedals simultaneously and to exert a force to overcome the damping force of the damping mechanism so as to exercise the muscle of the user's two feet and legs, thereby achieving the exercising effect.

Abstract: The invention provides a multi-angle Achilles tendon stretching pedaled trainer, including two arc-shaped rockers with one on the left and the other on the right. Besides, two pedals that can be stepped on by a user are provided on top of each rocker, with one on the front and the other on the rear. Also, an axle pole is provided between the two rockers for connection, allowing the two feet on the pedals to make forward and backward swaying motions in order to twist waist and hips, strengthen leg muscles and develop body balance.

Abstract: An exerciser includes a base and a foot support adjustably secured to the front portion of the base. The user may sit on the base and may engage his feet with the foot support and may rotate backward to exercise his waist or abdominal portion. The base has one or more openings for receiving hands of the user. The base has an anti-slip device disposed in the bottom portion. A barrel is secured to the base, the foot support has a beam adjustably secured to the barrel for securing the feet of the user. A spring cable may be attached to the foot support.

Abstract: An exerciser includes one handle having an inner thread formed in one end and includes another handle having a bolt extended from one end for engaging with the inner thread of the one handle and for allowing the two handles to be rotated relative to the other. A spring is engaged on the bolt and biased between the handles for applying a biasing force against the handles and for resisting the rotation between the handles. A cap or one or more weights may be attached to the other end of each of the handles for exercising the arms of the user.

Abstract: A dumbbell includes a handle, two blocks secured to the ends of the handle, and two casings engaged on the blocks so as to adjust the weight of the dumbbell. Two projections are engaged in the blocks and engaged with the casings for securing the casings to the blocks. Two housings are engaged on the casings and include two projections for securing the housings to the casings so as to further adjust the weight of the dumbbell. An arm is engaged onto the handle for engaging with the hands and legs of the users so as to conduct various kinds of exercises.

Abstract: A dumbbell comprising a handlebar having two joints at two opposite ends for mounting a plurality of pairs of weights, wherein said joints have each an inner thread and an outer thread; said weights include a pair of first weights, a pair of cover weights and at least one pair of auxiliary weights. Each first weight has a stepped bolt hole through the central axis thereof which includes a first bolt hole at one end and a second bolt hole at an opposite end respectively made in size equal to the outer thread and the inner thread on each joint. Each auxiliary weight has a screw rod at one end in outer diameter equal to the inner thread on each joint and a bolt hole at an opposite end in inner diameter equal to the inner thread on each joint. Each cover weight has a screw rod at one end in size equal to the screw rod on each auxiliary weight. By connecting the first weights, the auxiliary weights or the cover weights to the handlebar, the dumbbell is arranged into any of a variety of forms.