A positive pressure airway device for providing resistance in an air pathway for a patient exhaling. The device includes a central tube region, a inspiratory air passageway for passing air into the central tube region when a patient breathing through the device inhales, and an expiratory air passageway for passing air out of the central tube region when a patient breathing through the device exhales, A valve in the expiratory air passageway allows air to flow out only when a patient using the device exhales with an expiratory air pressure greater than a selected pressure, and includes a stopper and a coil spring with an interior portion that is free from any structure that would inhibit the “side-to-side” movement of the spring within the housing. The stopper has a cone-shaped air-stopping surface providing a valve angle that is different from the valve-seat angle so that either laminar or oscillating flow may be obtained.

An exerciser comprises a first block, a second block, a first torque member, a second torque member, and a damper assembly. The first block has an axle pivotally coupling with the second block. The first torque member is arranged at a first position or a second position of the first block. The second torque member is arranged at a first position and a second position of the second block. The damper assembly couples with the first block and a second block. The forces exerted on the first torque member and the second torque member will increase or decrease the distance between the first torque member and the second torque member.

A portable exercise device includes a first body and a second body. The exercise device also includes a support structure pivotably connecting the first and second bodies. The support structure is configured to move between an engaged position and a disengaged position. The device also includes a resistance mechanism configured to resist movement of the first and second bodies toward one another when the support structure is in the engaged position. When the support structure is in the engaged position, the first body is positioned substantially parallel to the second body such that in a first open, in-use configuration of the device, the first body has a first neutral position relative to a pivot axis and in a second open, in-use configuration of the device, the second body has a second neutral position relative to the pivot axis.

A portable exercise device includes a first body and a second body. The exercise device also includes a support structure pivotably connecting the first and second bodies. The support structure is configured to move between an engaged position and a disengaged position. The device also includes a resistance mechanism configured to resist movement of the first and second bodies toward one another when the support structure is in the engaged position. When the support structure is in the engaged position, the first body is positioned substantially parallel to the second body such that in a first open, in-use configuration of the device, the first body has a first neutral position relative to a pivot axis and in a second open, in-use configuration of the device, the second body has a second neutral position relative to the pivot axis.

A foot exercise apparatus includes a non-slip base and a casing mounted atop the base, the casing having opposed front and rear rends and opposed side walls extending therebetween. A toe assembly is situated atop a top surface of the casing proximate the front end an includes a toe receiver having a cupped configuration and a stop for aligning a user's toes when standing atop the top surface. When a user contracts or pulls his toes back, the toe receiver is slidably movable between a rest configuration displaced a first distance from the front end and a deployed configuration displaced a second distance from the front end, the toe receiver being spring biased toward the rest configuration. A heel assembly is situated atop the top surface proximate the rear end and includes a toe receiver for receiving a user's heel and is slidably movable according to a user's foot length.

A handgrip device has a palm rest operable to engage with a palm of a user, a grip bar moveably coupled with the palm rest and operable to engage with one or more fingers of a user. One or more force transducers can be disposed between the palm rest and the grip bar to measure a compression rate and the return rate of the grip bar relative to the palm rest, and a data connection operable to communicate the compression rate and the return rate.

Provided is a chest expander including a pair of operational arms having upper ends rotatably coupled to a head and moving to approach or be spaced apart from each other and a pair of gas springs disposed crosswise between the pair of operational arms. In the operational arm, a longitudinal hole configured to guide one end of the gas spring to move are formed. A guide coupled to the one end of the gas spring are arranged in the longitudinal holes. A Holding device holds the guide at a selected position. Intensity of elastic force provided by the gas spring is adjustable by adjusting a position of the one end of the gas spring.

Provided is a chest expander including a pair of operational arms having upper ends rotatably coupled to a head and moving to approach or be spaced apart from each other and a pair of gas springs disposed crosswise between the pair of operational arms. In the operational arm, a longitudinal hole configured to guide one end of the gas spring to move are formed. A guide coupled to the one end of the gas spring are arranged in the longitudinal holes. A Holding device holds the guide at a selected position. Intensity of elastic force provided by the gas spring is adjustable by adjusting a position of the one end of the gas spring.

A compression golf swing training apparatus includes a hitting board mounted atop a framework and configured to move downwardly at the point of impact from the golf club striking the hitting board during a golf swing. Specifically, the downward motion of the hitting board, when struck with a golf club, compresses the compression springs in their holder imitating or replicating the feeling a golfer experiences when taking a divot of golf course grass during a golf swing. The system is reconfigurable and interchangeable with distinct compression spring levels held in their individual spring holders replicating and/or imitating the resistance of the ground the golfer experiences playing on hard, soft, and wet golf course grass conditions.

Methods for treating fluid overload in a subject comprise shifting fluids directly and non-invasively from an interstitial compartment of the subject to skin of the subject through controlled local sweating. Methods of the invention allow for removal of excess fluid from the interstitial compartment of the subject and treat fluid overload in the subject. Sweat stimulation systems comprise a chamber and first and second relative humidity sensors. The chamber is sized to fit around a body part of a subject, comprises an inlet and an outlet, and is configured such that air flows through the chamber from the inlet to the outlet. The first relative humidity sensor is operably located inside the inlet, and the second relative humidity sensor is operably located proximate the outlet.