My Garmin Connect file uploaded from the 310XT after Xterra Grabouw. I did not hit the laps, which would have offered more valuable and specific data for review, but the below graphs over some insights.
It’s interesting to me how gradual the swim HR build is, assuming it was reading well underwater but seems so. And how high the spike was through T1.
It’s evident too that I did go out really hard from minute twenty through forty, the first twenty on the bike, until the highest little spike at minute forty which was the hike-a-bike for most. Once I’d recovered on the far side of it down the single track, my HR would not hinge as high again until the running hill.
I had expected the run to be more a sustained HR than the little spikes over and under my running threshold HR of 172′ish. The climb was at mostly consistent gradient as seen in the elevation graph below.
From the elevation/distance graph its easy to see too why my HR was most smooth during the 20-40′ race portion corresponding to the gradual climb that starts the bike route.
Small summary. What would have been neat would be to add wattage to the bike data. And perhaps have hit a few laps, like the swim, first portion of the bike, the flat section of the run, the climb. It would allow better ave HR and ave pace analysis.
3 Responses to "Garmin Report"
Such cool info to check out!
That heart rate graph, during the swim? That’s a case of it not getting any heart rate data. It then interpolates between what I assume was your pre-start heart rate and your heart rate after you left the water, hence the smooth climb. It is hard to get signals through water. (Submarines use very low frequencies with very, very long antennas.
What I find most impressive about the 310XT is claims that you can use it to track your open water swim – presumably able to handle GPS communications for the out-of-the-water part of the stroke. (I bet it would struggle with breaststroke for example.) Have you had good results tracking your swims with the 310XT?
Clicking through to http://connect.garmin.com/activity/70699119 I can see more detail – when you hover over the graph, it shows specific points that were plotted. For the heart rate you can then notice there are no points plotted in the smooth section.
For swimming – the first “timing” chart showing speed, you can see it plotted about 10 points during the 20 minute swim – these are rather inaccurate, and attempts at averages I guess, you don’t swim that fast.
The route plotted on the map (switch to Aerial view to see the water) shows it does manage to keep the GPS lock quite well. Some inaccuracy (all those zig-zags), but the general route is there. After some appropriate filtering of the points, the general stats for an out-and-back swim (or one-way swim) should be quite good and accurate.