1/25/2024 0 Comments Core temp monitor![]() This feature is supported on all Intel Core and Core 2 based processors as well as the whole AMD's Athlon64 line of CPUs. Intel and AMD published detailed, public information about the "DTS" (Digital Thermal Sensor), which provides much higher accuracy and more relevant temperature reading than the standard thermal diode sensors do. I hope that this video highlights the need to look before you leap into this brave new world.Core Temp is a compact, no fuss, small footprint program to monitor CPU temperature. Wearables, whether activity, sleep, recovery, or now core temperature, are all the rage among recreational and competitive athletes, and are also moving into medical and occupational settings. Overall, ~50% of the CORE data was more than 0.3☌ different from rectal temperature, which the authors concluded as an unacceptable level for validity. This is possibly a worse case situation, where CORE seems to read higher than reality in non-critical situations, but reads too low when a person is actually hyperthermic. With much higher temperatures of 38.5-39☌, where heat illness can become a serious issue, CORE data flipped 180° and UNDERestimated body temperature. ![]() However, take a look at Study 2 on the right. By itself, this might not be a showstopper if the overestimation was consistent. In Study 1 with moderate temperatures on the left, CORE overestimated body temperature compared to rectal temperature. However, things were not as rosy with validity, where the CORE data was compared with the gold standard of rectal temperature. ![]() The two trials are shown with the pink and purple lines, and agreement between the trials were very high, with a mean bias of just 0.02☌. Let’s first look at CORE’s reliability, which was done by comparing the data over the two identical temperate trials. For a further test with much higher body temperatures, 13 trained cyclists rode at a hard steady effort at 30.7☌, and also did a warmup and cooldown of 10 and 15 min. They rode for 60 min at a steady hard intensity in 19☌ in order to raise core temperature to high but not extreme levels. Reliability was tested by 12 trained cyclists performing the exact same protocol twice. A system like CORE needs to be BOTH accurate and reliable if it is to actually be useful for monitoring in the field.Ī Slovenian research group just published a validity and reliability study of the CORE. For example, it might read 8,000 m every time you take a measure at the summit. But a GPS can be reliable or precise even if it is NOT valid. As an example, if we’re measuring the height of Mount Everest using a GPS, it is valid or accurate if it actually measures 8,848 m. What are these two terms and why are they important? Validity asks whether a system tells you the actual correct value that you’re trying to measure, while reliability tells you whether you will get the same value if you test the same situation several times. But a big issue is that it was marketed without any independent testing of its validity or reliability. It is now being used by many top cycling teams and triathletes. This system straps onto your chest, and uses a combination of heat flux, skin temperature, and heart rate to calculate deep body temperature. In 2020, the CORE body temperature system came onto the market to wide publicity. A better system are telemetric pills that measure deep gut temperature, but these are not reusable and are costly with repeated use. There have been many sites and systems used as an analog or indirect measure of core temperature, including forehead, ear canal, oral, and armpit temperature, but these are very prone to errors. However, that is obviously not easily or safely possible in real-life settings. In the lab, we can use invasive esophageal, rectal, or even arterial probes to directly and accurately measure deep body temperature during experiments. In today’s episode, we’ll take a look at the validity and reliability of the CORE body temperature monitor, a new non-invasive sensor that’s becoming extremely popular amongst endurance athletes.Ī valid and reliable system to measure core temperature is one of the holy grails for athletes, sport scientists, and occupational health and safety.
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