Disclosed are various approaches for determining the maximum oxygen consumption of a person, also known as maximum aerobic capacity or VO.sub.2 Max. A person is positioned on a treadmill. Attached to the person is a harness configured to apply a horizontal force to the person. A work rate for the person can be calculated based at least in part on the magnitude of the horizontal force applied by the harness and the velocity of the belt. The maximum oxygen consumption for the person can then be calculated based at least in part on the previously calculated work rate.

An interactive exercise system includes a mechanical support system and a display module held by the mechanical support system. A mirror element is attached to at least partially cover the display module. At least one movable arm is connected to the support system and at least one force-controlled component is connected to the mechanical support system. The force-controlled component can be graspable by a user and allows for a range of exercise types and programs.

Aspects of the present disclosure provide methods, apparatuses, and systems for dynamic starting rates for guided breathing. According to an aspect, a user's initial breathing metric is determined. A multiplier is then determined, where the multiplier varies as a function of the initial breathing metric within a range. The level of intensity of the multiplier may vary, and may be a dynamic feature based on the determination of the user's initial breathing metric. Once the multiplier is determined, the multiplier is applied to the user's initial breathing metric to determine a starting breathing metric for guided breathing. The starting breathing metric is slower than or equal to the user's initial breathing metric.

Described herein are systems and methods for favorably coordinating a timing relationship between a musculoskeletal activity cycle and a cardiac cycle of a user. A method may include repetitively detecting a signal that correlates to a blood volume in the user; determining an actual value of the signal that varies with the timing relationship; computing a trend of the actual value of the signal; and adjusting the movement guidance based on the trend of the actual value. A system may include a prompt device configured to provide recurrently a movement guidance to the user for guiding performance of the rhythmic musculoskeletal activity; a sensor configured to provide a signal that correlates to a blood volume in the user; and a processor configured to determine an actual value of the signal that varies with the timing relationship and to adjust the movement guidance based on the trend of the actual value.

An interactive exercise system includes a mechanical support system and a display module held by the mechanical support system. At least one force-controlled component is engageable by a user and connected to the mechanical support system, with the force-controlled component configure to reduce force when applied user force is great enough to cause tip-over or unwanted movement of the mechanical support system. The force-controlled component can be graspable by a user and allows for a range of exercise types and programs.

A device for acclimatising at altitude comprising a breathing mask defining a confined air space when it is placed on the face of a user. The mask comprising a suction valve to let the surrounding air enter inside the confined space when breathing in; an expiration valve to let air exit with a determined resistance, so as to create an overpressurisation of air in the confined space, when breathing out; and a sensor to establish information about the pressure of the confined space behind. The acclimatisation device in addition comprises a unit for processing the pressure information configured to establish a breathing characteristic of the user and compare it to at least one target value, in view of recommending to them an adjustment of the breathing mode thereof. A method for functioning this device is also provided.

The present invention includes a device for hypoxia training comprising: one or more electrochemical cells each comprising: a cathode and an anode separated by a proton exchange membrane, each of the anode and cathode in communication with an input and an output, wherein the input of the cathode is in fluid communication with ambient air, and wherein the input of the anode is in fluid communication with a source of liquid water; a power supply connected to the one or more electrochemical cells; and a mask in fluid communication with the output from the cathode of the one or more electrochemical cells, wherein oxygen is removed from the ambient air during contact with the cathode when hydrogen ions separated from liquid water by a catalyst on the anode convert oxygen in the ambient air into water.

A garment including a breath sensor module. The breath sensor module includes a stretchable sensor configured to respond to at least one of expansion and contraction of a torso of an individual wearing the garment. The breath sensor module also may include an electronics module. The electronics module includes, for example, a processor and a haptic feedback device. In response to the processor determining that the individual's breathing meets predetermined criteria based on the response of the stretchable sensor, the haptic feedback device produces haptic feedback such that the individual is reminded to breathe. Further, the breath sensor module does not include a transmitter or a receiver configured to transmit or receive data outside of the breath sensor module. Advantageously, this allows for streamlined use, and less-intrusive reminders to the individual wearing the garment, without the complexities of signal transmission or receiving.

Method of delivering the object related message by using the format of the wide-frequency sound signal is proposed. Due to both the well-known Doppler effect and the well-known phenomena that the intensity is inversely proportional to the distance in the three-dimensional space, the transmitted wide-frequency sound signal itself indicates some properties of the objected attached by the wide-frequency sound signal transmitter, such as the motion and the distance. Besides, the delivered wide-frequency sound signal also carries the contents detected by one or more corresponding detectors. Such method has many possible applications, such as intelligent fitness equipment, health care, indusial application and so on.

A rehabilitation assistance apparatus 1 includes: an acquisition unit 211 configured to acquire at least one of an image of a subject who is doing exercise for rehabilitation, audio of the subject, and biological information of the subject; a calculation unit 212 configured to calculate a fatigue level of the subject based on at least one of the image, the audio, and the biological information; a generation unit 213 configured to generate feedback information related to the rehabilitation, based on the fatigue level; and an output unit 23 configured to output the feedback information.