Polar S625x

We got a new Polar S625x a couple of weeks ago, and I must say I’m very impressed with it. It’s my fifth Polar unit. For those of you not familar with it, it’s one of Polar’s latest Heart Rate Monitors. In addition to the usual heart rate data, it records both running and cycling data.

The cycling data is recorded using the usual array of magnets and sensors, while the running data comes from a pod fixed to one of your running shoes. It’s quite light and unobtrusive once fitted. In my experience, though, it does need calibrating and is very sensitive to the position on the running shoe. For instance, on my first run, it recorded a distance of 8.5 km for a 9.5 – 10 km run. On my next run, once the sensor had been removed from the shoe and refitted, as far as I could see, in the same position, it recorded 7.3 km for a 6.7 km run. I’ve now calibrated the sensor based on the last run, so we’ll see how it goes from here.

We’re hard at work improving the S625x support in TrainingLog – we’ve had a couple of headaches with interval sessions, and how to distinguish these from normal sessions.

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