This disclosure relates to a portable oxygen concentrator system. The system includes a case containing a portable oxygen concentrator, a mask, and a button. The case is configured to be worn on a user's back. The mask is configured to deliver oxygen from the portable oxygen concentrator to the user. The button, when activated, is configured to cause the portable oxygen concentrator to deliver an increased flow of oxygen to the user for a period of time.

A gas supply apparatus with improved control is provided. The gas supply apparatus provides gas at an outlet junction. The apparatus includes a gas mixer for gasses from primary and secondary supplies to a given ratio. The apparatus also includes a gas reservoir supplied by the gas mixer. A tertiary supply valve is also included and connected in parallel with the reservoir. The tertiary supply valve is adapted to connect the outlet junction to a tertiary gas supply when gas is not being supplied to a mixer by the primary and/or secondary supply.

The invention relates to a oxygen reduction system as well as a method for operating an oxygen reduction system. The oxygen reduction system comprises an inert gas source and a line system which is fluidly connected or connectable to the inert gas source and to the at least one enclosed area in order to supply the gas provided by the inert gas source to the at least one enclosed area as needed. The invention provides for conducting a leak test on at least one section of the line system by pressure-testing the line section to be checked for tightness using at least a portion of the gas mixture or gas provided by the inert gas source.

A conditioning process for the enhanced production of human growth hormone in a human has a first step of application of pressurized cooling to the limbs of a subject, who experiences a ramp-up exertion followed by a series of conditioning cycles, followed by a ramp-down cycle. The condition cycles include an interval of intense exertion followed by an interval of reduced exertion, and during ramp-up cycle, conditioning cycle, and ramp-down cycle, the pressure cooling to the limbs is set as a fraction of systolic blood pressure, with the fraction in the range 33% to 220%.

This disclosure relates to a portable oxygen concentrator system. The system includes a case containing a portable oxygen concentrator, a mask, and a button. The case is configured to be worn on a user's back. The mask is configured to deliver oxygen from the portable oxygen concentrator to the user. The button, when activated, is configured to cause the portable oxygen concentrator to deliver an increased flow of oxygen to the user for a period of time.

Disclosed is a system and method for regulating tourniquet cuff pressure to restrict blood flow penetration past the cuff based on a personalized restrictive pressure (PRP). The system includes mechanisms for estimating a limb occlusion pressure (LOP) by determining a minimum pressure at which arterial blood penetration past an applied tourniquet cuff is stopped and measuring a pulsation characteristic associated with the LOP. Thereafter, the system establishes a PRP by determining a second pressure that restricts but does not stop arterial blood penetration past the cuff and that corresponds to a second pulsation characteristic differing by a percentage from the pulsation characteristic associated with the LOP. During a limb-activity time period, the system maintains pressure in the applied tourniquet cuff near the PRP, thereby restricting but not stopping arterial blood penetration past the cuff during the activity time period.

A device for performing blood flow restriction training during the day, integrated with a garment, and controllable to apply a desired compression level to a range of muscles with the intent on improving the health and fitness of a user doing normal daily activities.

A belt for use in a BFR system with an outer belt material hermetically sealed to an inner belt material along a perimeter, thereby forming at least one inflatable chamber, the inflatable chamber having an input port for accepting a gas into the chamber, the belt further comprising a first fastening means in communication with the outer belt material, for attaching to a second fastening means in communication with the outer belt material, thereby locking a circumference of the belt, when wrapped around a user's limb, and the belt further comprising a pre-tensioning system for prescribing and applying a known amount of initial compression to the limb by the belt.

The invention relates to a device for performing respiratory training, in particular altitude training, comprising a mouthpiece (1) through which a person can exhale respiratory gas into a volume (2, 3a, 7) or can inhale it out of the volume (2, 3a, 7), wherein this volume (2, 3a, 7) is formed at least in part by a container (2) which is adjustable in terms of its volume and which is connected to the mouthpiece, wherein the volume (2, 3a, 7) adjoins one side of at least one gas-permeable membrane (4), to the other side of which at least one gas exchange chamber (3b) is connected, through which a fluid provided for the gas exchange, in particular CO.sub.2 and/or O.sub.2 gas exchange, can actively flow. Furthermore, the invention also relates to a method for performing respiratory training, in particular altitude training, wherein a person exhales into a training device through a mouthpiece (1) and inhales from this training device, wherein the O.sub.2 and/or CO.sub.2 partial pressure in the respiratory gas inhaled from the device is influenced by exchange of O.sub.2 and/or CO.sub.2 between the respiratory gas in the training device and a fluid provided for the gas exchange through at least one gas-permeable membrane (4).

A blood flow restriction (BFR) exercise strap. The strap is configured with a coupling at a first end of an elastic band. A second free end of the band is releasably retained in the coupling by a lever arm that is biased in a closed configuration against a plurality of teeth carried on an interior surface of the base. The band has graduated indicia carried thereon for determining a constriction level applied by the band to a limb of the user. The graduated indicia allow the user to set a desired level of constriction on each of a left limb and a right limb to provide the user to develop bilateral symmetry of targeted muscle groups of the limbs.