Approaches and level of analysis of the physical demonstration of professional soccer players. Level 3 (part 1).

In this part 1, I will show you two approaches for the traditional individualization of heart rate data demonstrated by, in this case, spanish professional soccer players.
After the the general explanation we will start with the analysis of some data chosen as an example: HR demonstration during one week of in-season training, comparing average heart rate, and ...

Just go on for it!

Approaches and level of analysis of the physical demonstration of professional soccer players. Level 3 (intro).

In this post I'll do the introduction to the 3rd level of approaches and analysis of the physical demonstration, in which will talk about the individualization of data related to the heart rate (HR) output of spanish professional soccer players and, also about the individualization of velocity thresholds for the quantification of distances run during training and games and the consequences of their use, and a general view (because we'll deep in it in future posts) of different possibilities of individualization when analyzing the training sessions.

Let's go for it!

Approaches and level of analysis of the physical demonstration of professional soccer players. Level 2 (part 11).

Given that too many friends and colleagues has asked me about impacts, I have tried to show you just a sample about them, and a general idea of how we can use them when trying to control the training loads.
Much more stuff is going on about impacts, but but as there so many things to be aware of, lets end this issue with some practical data of a professional spanish soccer player: we have commented it but if you are working with this short of GPS system technology sure you have appreciate it, impacts are a metric that it is very individual, so we can find similar players (body weight, stature, position ...) with very different quantification of it (in the same drill, task, session, they demonstrate big differences in the quantity and intensity of the impacts).
As an exemple of it, I show you this selected data corresponding to the same player jogging for recovery, in different situations (after more or less fatigue, etc).

Stay tuned,

Approaches and level of analysis of the physical demonstration of professional soccer players. Level 2 (part 10).

We continue with the same data of a spanish professional soccer player who suffered a chronic knee injury.
In the last post we analyze the volume related with the articular load, using the total number of impacts over 5G. In today's post we focus on other variable: the number of impacts over 5G divided by the number of accelerations over 1 m/s/s. Remember that while impacts are measured by the 100Hz triaxial accelerometer of the GPS system, the number of accelerations are measured by the 1 Hz GPS itself. Logically the precision of a 1 Hz GPS system it is not the same as the actual 5 - 10 Hz GPS systems.
This metric is in a way, a reflex of the "intensity" of the deceleration theoretically related with the acceleration measured. Remember that in that moment (2007) it was not possible to obtain the data of the decelerations by the software I were using.

Stay tuned,

Approaches and level of analysis of the physical demonstration of professional soccer players. Level 2 (part 9).

We'll comment firstly the data obtained from a professional spanish soccer player (who suffered from chronic injury pain in both knees, LCA ...) during a preseason training week, related with the total number of impacts over 5G demonstrated, and compared with the data obtained during two friendly games in the same period.
You will see the evolution during that week, and it's possible relationship with the accumulation of articular load that it took him to the point of having to stop training during one of the sessions.
This parameter (total number of impacts) it's considered to be directly related with the "volume" of articular load supported by the player, so it's specially important in those players who has suffered from different articular pain/injury, specially those who has been operated from any articular problem, like LCA, meniscus, etc.

As always, once that we know the possible relationship expressed here, the problem arise when we have to manage diary with this short of info, specially when we are talking about a team sport, with collective methodology training ... (but this is another issue).

Hope you find it interesting.
Stay tunned for the next post (in which we talk about the number of impacts related with the number of accelerations ...).

Approaches and level of analysis of the physical demonstration of professional soccer players. Level 2 (part 8).

And we start today a very interesting analysis about the relationship between impacts (through two variables, the total number of impacts aver 5 G, and the number of impacts over 5 G divided by the number of accelerations over 1 m/s/s, measured by GPS system running at 1 Hz) and their possible relationship with the mechanical overload experimented by professional soccer player that joined an Spanish first division soccer team during 2007-08 season, and injuries.

You will see the commented data recollected during around a week on the preseason period that include also two friendly games.

Stay tunned,