Jumat, 16 September 2011
Whatever the case, I went for a 20 minute aerobic run on the running track at work yesterday. The track is a kind of afterthought to the football pitch, being a square 350 meter circuit that is often interrupted by stray footballs or stretching footballers. Nevertheless, I ran an average of 4:02 kilometer splits (just shy of 15kph) with an average heart rate of 149 bpm (my aerobic threshold) and it wasn't even particularly cold - around 27 degrees. Admittedly my heart rate was creeping up by the end but it was very comfortable. Had I been programed to run 20 minutes at 15 kph, I would have spent some of the day fretting about the workout but a 20 minute aerobic run doesn't even register any points in terms of training load.
If anyone can point me to any scientific studies of the benefits of tartan track versus tarmac, I'd be very interested...