Wednesday, December 31, 2008
Polar Running Index in practice
the topic might be interesting only for those using the Polar PPT SW...
I can draw a balance of my 2 years of use of the RS800sd and the related SW.
It is quite interesting to see that the Polar "Running Index" is actually a good predictor of the running shape
The chart maps 2 years of use of the watch and there is a clear relationship between my ups/down, the Running Index and the actual racing performance.
The red thick line is a 20 days moving average, to see better the overall trend rathe
r than the single workouts.
I must anyway remark that obviously also the external temperature has an influence: during the summer periods, the HR is usually higher at equal pace to, so the R.I. becomes unavoidably lower.
For myself, I could draw these references:
- R.I. around 77: means Marathon time around 2h42',
- R.I around 80: Marathon in around 2h38', HM around 1h15'
- R.I. around 84: Marathon likely in 2h33'-34' (that was the prediction based on workouts and 5k race time), HM around 1h13'
I would be very interested to compare data with other runners to see if these values have an "absolute" meaning (eg: 84 means 2h34' for everyone) or specific for each individual
Labels: Polar Rs800 HRM