|Running 'metrics' from an intervals session|
Thursday, September 4, 2014
If only the Garmin was right!
The new Garmins on the market have some neat features for the technically driven runner. These include information about running cadence, ground contact time and body movement. They are also programmed to calculate a VO2max estimate and use this to predict potential race times. Given where I am these days, I sure wish what my Garmin has been telling me was true. It currently has my VO2max at 48 ml/kg/min and as a W50, this ranks me in the 'superior' range. Not only that, it presently predicts I could run a sub 22 min 5K. Last week is was predicting a sub 23 min 5K, but my effort at parkrun did not get even close. The VO2max estimate is an algorithm from Firstbeat technologies. I've found that the value drops after a tough session and then increases after an easier session.
They say that fast runners have high cadence and less ground contact time. So is it the chicken or the egg? My cadence is quicker and I spend less time on the ground when I'm running faster. I'm guessing most people would find the same thing, when comparing slower paces to quicker paces. Question is, could a slow runner get faster by simply changing the way they run? Maybe yes and maybe no, it would be an individual thing. But hey, it's lots of fun looking at all the graphs and numbers. I wonder when that race time predictor will get it right? Time will tell ;-).