Powertap Powercal Bluetooth/Ant+ Heart Rate Strap

Powertap Powercal Bluetooth/Ant+ Heart Rate Strap
£89.99  

Introducing PowerTap PowerCal, the worlds first-ever power meter calculated from heart rate. For years there has been a widely recognized correlation between power and heart rate. In a lab one can predict power output or intensity by knowing heart rate, and vice versa. But once you leave the lab and enter variables such as hills, wind and fatigue, the relationship gets a bit trickier. This is why many cyclists and triathletes use both a heart rate monitor and a power meter in training. Through the use of these tools and the analysis of tens of thousands of power files over the years, the experts at PowerTap and the University of Colorado Boulder have identified patterns which can correlate an athletes heart rate to power across all real world conditions. Weve utilized this knowledge to create a technology which provides power based on this correlation; in the real world and in real time. Were all familiar with the key difference between a power meter and a HR monitor: that HR is a response to the work youre doing, whereas power is the actual work. The algorithms in PowerCal translate heart rate data into the vernacular of power-based training- watts, kilojoules, peak power, etc. Unlike a standard heart rate monitor PowerCal contains an algorithm that is sensitive to acute changes in heart rate (HR) and can account for rapid changes in power output. It translates these conversations into the vernacular of power training: watts, kilojoules, peak power, FTP, etc. A PowerTap hub directly measures power through strain gauges on the torque tube, which is a direct measurement of power. PowerCal is an estimated value derived from HR So you may ask how after all these years of saying HR alone is not the best measurement for training, can you now measure power from HR? There has always been a correlation between HR and power, its just that it varies depending on conditions. PowerTap have simply designed algorithms which predict power based on HR monitoring. Think of the PowerCal as a super accurate HR device benefitting from the supply of wattage data. The beauty of this set-up is that even if youre already a fully signed up member of the PowerTap wheel club, you can jump on an alternative ride (where youre unable to derive feedback from a hub based power meter) using the PowerCal strap for uninterrupted training load data. Effectively PowerCal takes the role of bridging device for racers who are using a non PowerTap wheel but crucially need to keep TrainingPeaks, PowerAgent and other training resources fully up to date with acute and chronic training loads, i.e short and long term loads. Specification: Signal Transmission: Bluetooth Smart (Cycling Power Service, Heart Rate Service, Device Info Service) or ANT+ (2.4 GHz) Operational Temperature: 0-40C/32-103F Battery Type: CR2032 Battery Life: 400 Operational Hours (Bluetooth); 600 Operational Hours (ANT+) The PowerCal is not a waterproof device and should not be submerged in water PowerCal BLE is compatible exclusively with the PowerTap mobile application on iPhone 4S or higher. PowerCal ANT+ is compatible with android and iPhone/iPad devices with use of appropriate ANT+ adapter key PowerCal ANT+ is not compatible with cervos (little yellow computer) or older grey indoor cycle consoles.

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Powertap Powercal Bluetooth/Ant+ Heart Rate Strap

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Powertap Powercal Bluetooth/Ant+ Heart Rate Strap on other UK sites

Powertap Powercal Bluetooth/Ant+ Heart Rate Strap
£89.99
Powertap Powercal Bluetooth/Ant+ Heart Rate Strap
Introducing PowerTap PowerCal, the worlds first-ever power meter calculated from heart rate. For years there has been a widely recognized correlation between power and heart rate. In a lab one can predict power output or intensity by knowing heart rate, and vice versa. But once you leave the lab and enter variables such as hills, wind and fatigue, the relationship gets a bit trickier. This is why 
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Powertap Powercal Bluetooth/Ant+ Heart Rate Strap on USA sites

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