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Td Peet continued visit stack.com.au Green LEDs illuminate the skin of the wrist and the light is absorbed by the flow of blood. Changes in absorption are used to detect blood flow and heartbeats to accurately calculate heart rate. MEASURING UP (Sp02) The level of oxygen in your blood is measured in a similar fashion to heart rate. Light wavelengths target haemoglobin (the protein in red blood cells. that carries oxygen) and are reflected back to measure oxygen content. (HVR) - the time is elevated. Some activity sensor to sweat levels. between each beat - is used to calculate stress. Increased HVR indicates a low level, while lower means stress and fatigue premium trackers use a dedicated electrodermal measure variations in HEART RATE filma BLOOD OXYGEN fig STRESS LEVELS fmm SLEEP PATTERNS pg ECG | Heart Rate Variability Accelerometers in the device detect motion and measure the amount of movement during sleep. Heart rate and respiration are also used to determine the overall quality of your sleep. Heart rate monitoring is combined with an electrode in the crown or face of the watch that records the electrical impulses associated with heartbeat. The user simply presses a fingertip to the crown or watch face and an algorithm will then assess heart rhythm FASHION FIT Wear it well Wearables are largely accurate when measuring things like heart rate and blood coxygen levels, but this is dependent upon the device's sensors making physical contact, with the skin. The more snug the fit, the more accurate the readings. The light from the sensors beneath shouldn't be visible and the optimal wearing position is two finger-widths above the wrist bone. A build up of moisture from sweat and sunscreen can also affect monitoring, so be sure to clean the sensors regularly with a lint-free cloth, Health Stat 80 Per) aL ibhif.com.au HIKE
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