Instrumented soccer, fall 2013
I just started the spring season in my recreational soccer league last weekend. And I’m still using Adidas’s miCoach system to record statistics in each game. Earlier I showed a couple of individual sessions, with image captures from the miCoach site. Here I’m going to summarize the season, and compare it to the previous season (Summer 2013). Top line summary of the season
- 11 games, 9⁄8 – 12⁄29
- 8 goals
- Compared to 1 in Summer 2013
- All on turf
For the quantities tracked by the Speed Cell, we have a group of measurements, summarized as follows
- Distance: 4.0 ± 0.6 miles per game, with a best of 5.1 miles on 12⁄1. (Improved over Summer 2013, 3.9 ± 0.5 mpg.)
- Sprints: 20.5 ± 4.5 sprints per game, with a best of 30 on 12⁄1. (Improved over Summer 2013, 18.5 ± 4.7 spg.)
- Maximum speed: 15.0 ± 0.4 mph, with a best of 15.52 mph on 9⁄15 and 10⁄6. (Improved over Summer, 2013 14.5 ± 1.1 mph.)
miCoach offers badges (“achievements”) for various performance levels: on 12⁄1, 5.1 miles of total distance and 0.55 miles of “hi intensity distance” resulted in the Pro achievements for those two categories. Still haven’t reached the Pro mark for Maximum Speed, which I suspect will require a burst over 16 mph. (On 6⁄9, 3.9 miles of distance and 15.17 mph maximum speed earned the respective Club achievements. On 7⁄14, 0.38 miles of high intensity distance earned the corresponding Club achievement.)
I was pretty happy with my showing on December 1, but Sean Ingle’s Sunday article in The Guardian, on Chelsea and England defender Ashley Cole, shows how low on the performance scale these numbers are:
The additional physical demands are clear from Prozone’s data. In 2003-04 Premier League full-backs made an average of 29.5 sprints – any movement greater than seven metres a second – over a game. This season that figure is exactly 50. A decade ago the average recovery time for a full-back between high-intensity activities – any movement greater than 5.5m/s, or a three-quarters speed run – was 56.4sec. Now it is 40.4sec.
(Of course, I’m ten years older than Ashley Cole, so I am pleased just to be on the field, uninjured, and possessing a little bit of pace.)
It’s going to be hard to compare the spring season with this one, as the new team only has part-time goalkeepers, and I’ll have to take many more shifts in net. (The two times I played keeper during the fall were 13 sprint games.) Other than working on my metrics, my only goal for this season is to finally score one on the grass fields.