Abstract: Disclosed herein is an exercise machine that includes an elongated frame. The exercise machine includes a moveable carriage slidably coupled to the elongated frame. The exercise machine includes a spring support rod slidably coupled with the elongated frame and selectively positionable by a handle. The exercise machine includes at least one resistive member coupled at a first end with the spring support rod and at a second end with the moveable carriage. The resistive member is configured to bias the moveable carriage relative to the elongated frame. The exercise machine includes a first spring positioning rod slidably coupled to and moveable within a first rail on the elongated frame and a second spring positioning rod slidably coupled to and moveable within a second rail on an opposing side of the elongated frame. The spring support rod is extends between the first and second spring positioning rods.

Abstract: An exercise machine that includes an elongated frame having a head end and a foot end, and a moveable carriage slidably coupled to the frame and moveable between the head end and the foot end, the moveable carriage having a spring bracket coupled to an underside of the moveable carriage. The exercise machine also includes a spring support rod slideably coupled with the frame and disposed adjacent the foot end, and selectively positionable with reference to the foot end by a handle that extends from an interior area of the frame to an exterior area of the frame. The exercise machine also includes at least one resistive member coupled at a first end with the spring support rod and at a second end with the spring bracket, and configured to bias the moveable carriage towards the foot end of the frame.

Abstract: An exercise apparatus can include a base. The exercise apparatus can include a post comprising a first portion and a second portion. The base can be configured to receive the first portion of the post. The exercise apparatus can include a pad disposed around the second portion of the post. The exercise apparatus can include a tank coupled with the post at a distal end of the post opposite the base. The pad can extend from the base to the tank.

Abstract: A treadmill including a frame, a suspension connector connected to the frame, and a flexible deck connected to the suspension connector. The flexible deck is configured to flex in response to a load applied by a user striding on the treadmill. The suspension connector includes a suspension pivot that allows rotation of the flexible deck around the suspension pivot.

Abstract: Disclosed herein is an exercise machine that includes an elongated frame having a head end and a foot end, and a moveable carriage slidably coupled to the elongated frame and moveable between the head end and the foot end, the moveable carriage having a spring bracket coupled to an underside of the moveable carriage. The exercise machine also includes a spring support rod slideably coupled with the elongated frame and disposed adjacent the foot end, and selectively positionable with reference to the foot end by a handle that extends from an interior area of the elongated frame to an exterior area of the elongated frame. The exercise machine also includes at least one resistive member coupled at a first end with the spring support rod and at a second end with the spring bracket, and configured to bias the moveable carriage towards the foot end of the elongated frame.

Abstract: Disclosed herein is a stair climber that includes a frame having a base, an upper axle and a lower axle, and steps revolvably coupled to the upper axle and the lower axle. The stair climber also includes an electric brake mechanism operating in generative mode and coupled with the steps and configured to provide a variable resistive force. Also included is a controller that receives an indication of a selected exercise mode from a user that includes a first speed, a second speed, and a difficulty level. The controller also balances a load, in a learning mode, on the steps based a user's weight at the first speed, and controls, in response to the user applying an additional load to the steps via a rail system, the electric brake mechanism to apply the difficulty level of the selected exercise mode and prevent the steps from exceeding the second speed.

Abstract: An exercise machine. The exercise machine includes a frame, a foot engagement surface operably connected to the frame, and an arm rotatably connected to the frame at a pivot. The arm includes a handle connected to the arm at a first location distal to the pivot. The handle is configured to be gripped by a user. The arm includes a weight receiver connected to the arm at a second location distal to the pivot. The weight receiver is configured to hold one or more weights to modify a downward force provided at the handle.

Abstract: An exercise machine including a vertical post and an adjustable pulley. The vertical post includes a plurality of engagement holes. The adjustable pulley is slideably connected to the vertical post. The adjustable pulley includes a pull pin and a lock. The pull pin is selectively engageable with one of the plurality of engagement holes. In response to the pull pin being engaged with an engagement hole, movement of the adjustable pulley relative to the vertical post is restricted. The lock is selectively engageable with the pull pin. In response to the lock being engaged with the pull pin, movement of the pull pin is restricted.

Abstract: A stationary exercise cycle. The stationary exercise cycle includes a frame, a crank rotatably connected to the frame, a driven wheel rotatably connected to the frame, and a frame stiffener. The frame includes a down tube and a fork. The crank and the driven wheel are in operative communication via a continuous flexible member. The frame stiffener is connected to the down tube and the fork and encircled by the continuous flexible member.

Abstract: A stationary exercise cycle. The stationary exercise cycle includes a frame, a crank rotatably connected to the frame, a driven wheel rotatably connected to the frame, and a frame stiffener. The frame includes a down tube and a fork. The crank and the driven wheel are in operative communication via a continuous flexible member. The frame stiffener is connected to the down tube and the fork and encircled by the continuous flexible member.

Abstract: A weight plate for physical fitness weight lifting equipment so that the weight plate may be coupled to other weight plates and lifted in a stack. The weight plate includes a pivotal switch arm having a first end at which to receive a pushing force to cause the switch arm to rotate and an opposite end at which a fork is carried. A post runs through a center bore hole of the weight plate. The weight plate also includes an intermediate channel and a locking cavity that are aligned with one another at opposite sides of the bore hole. When the pivotal switch arm is rotated to a locked position, the fork is rotated through the intermediate channel, into surrounding engagement with the center post, and completely through the bore hole for receipt by the locking cavity by which the weight plate is reliably coupled to the post.

Abstract: A weight plate for physical fitness weight lifting equipment so that the weight plate may be coupled to other weight plates and lifted in a stack. The weight plate includes a pivotal switch arm having a first end at which to receive a pushing force to cause the switch arm to rotate and an opposite end at which a fork is carried. A post runs through a center bore hole of the weight plate. The weight plate also includes an intermediate channel and a locking cavity that are aligned with one another at opposite sides of the bore hole. When the pivotal switch arm is rotated to a locked position, the fork is rotated through the intermediate channel, into surrounding engagement with the center post, and completely through the bore hole for receipt by the locking cavity by which the weight plate is reliably coupled to the post.

Abstract: A vertical stack of weights is disposed beneath a base member, and at least one selector rod is rotatably mounted on the base member and selectively rotated into engagement with a desired number of the vertically stacked weights. A horizontal stack of weights is disposed on opposite sides of a base member, and at least one selector rod is movably mounted on the base member and selectively moved into engagement with the desired number of horizontally stacked weights. Various combinations of these arrangements may be used to provide adjustable resistance to exercise on dumbbells and/or weight stack machines.