Approaches and level of analysis of the physical demonstration of professional soccer players. Level 5 (part 7).
Following the last post in which I showed the data of the intensity of the soccer friendly games actions based on the speed demonstrated by the professional players of an Spanish team, you will see today the same approach based on the acceleration data.
In it you will find the average data of the intensity of the actions based on acceleration for soccer games, analyzed int two ways: the average of the maximum acceleration demonstrated by each player during each game (so data coming from just one action, the maximum acceleration one), and the average of all the accelerations demonstrated by each player in each game (so data coming from all the actions performed during the game). You will have the opportunity to compare it with the maximum value of acceleration (average for all the players of the maximum acceleration attained by each player during the season) for the team, so you can make your own conclusions ... if you want to share, they will be welcome!!!
Remember that all data we are using in this short of analysis highly depends on the system used, its specific software, the algorithms used, the filtering process of the raw data obtained, ... so have this in mind.
Enjoy,
Approaches and level of analysis of the physical demonstration of professional soccer players. Level 5 (part 6).
It arrives the moment to apply this intermittent approach to the analysis of soccer games: in this case, I show you the average data from the analysis performed with a spanish professional soccer team, in which we get data from all the friendly games performed during that pre-season and in-season (11 in total).
We have used the data obtained of all the players that participated in a complete 45 min of each game.
Logically this approach has its own limits (only 45 min, friendly games, preseason, in-season using mainly players "non-starters" ...) but it's a good reference to take in account.
Another big issue that we have commented in previous posts is referred to the GPS system; as you know, technology limits or guides us in a way ... but we have to try to use it in our direction ...
We have use 10 units from a competitive brand in that years (2007-2008), that unfortunately has not been able to adapt at the level required ... A little demonstration - confirmation of it is the paper of Buchheit et al. 2013 :http://martin-buchheit.net/2013/08/20/monitoring-accelerations-with-gps-in-football-time-to-slow-down/
Anyway, you can see here a little but important demo of how to apply the intermittent approach to the analysis of soccer games, and the data obtained as a reference ...
Hope you enjoy,
Approaches and level of analysis of the physical demonstration of professional soccer players. Level 5 (part 5).
After exposing the basic characteristics of the intermittent approach for the analysis of the conditional demonstration of soccer players (not only ...), and in order to better understand the complexity of the relationship between these parameters (intensity and duration of actions and pauses), I present you what I call "the equalizer": it's just a simple explanation through a simile comparing what happens with these parameters and with a music equalizer, with a characterization of what happens during a "standard" soccer game ...
Under this approach we can better understand what short of demands are we proposing to our players, how are they really performing, ... but also there is an approach of how to distinguish between the different orientation of soccer training tasks, drills and exercises traditionally introduced in the same "endurance" bag, and of course, it help us to better understand why the traditional methodological approach to endurance development in soccer players (not only) has proposed different methods (running intervals, technical circuit "intervals", SSG "intervals", HIT, HIIT, RSA, ...) that all seems to provide an increment in the concept of endurance (specific ...?) and a development in players "specific"? fitness.
Hope you enjoy,
Approaches and level of analysis of the physical demonstration of professional soccer players. Level 5 (part 4).
And we arrive to the "basis" of the intermittency when using it for the conditional demonstration of soccer athletes (not only soccer).
As you will see, intermittency can be defined basically by the characteristics of the periods of more intense activity, that we call ACTIONS, and the periods of less intense activity that we call PAUSES.
Both. actions and pauses must be selected by an intensity parameter (we will talk about in future posts), that not only determines their INTENSITY but also their DURATION.
So we talk about intensity and duration of actions, and intensity and duration of pauses.
I have added also the concept of RITHM, which we define as the average time between the start of different actions that are demonstrated during the game, training, task, drill, ...
As an exemple you will see some average data obtained from an spanish professional soccer team during all the friendly games that they played during 2007-2008 spanish La Liga season (7 preseason friendly games and 4 in-season friendly games). With this data I have used as key intensity parameter the acceleration (threshold value for considering an action 1 m/s/s with using a 1 hz GPS), because in those years there where not other better option ... (some years later I changed for what I understand are better options as metabolic power and mechanical horizontal power, but we will talk about it in future posts).
Hope you enjoy!
Approaches and level of analysis of the physical demonstration of professional soccer players. Level 5 (part 3).
After the traditional approach, in which we have commented that is based in some basic concepts between the relationship of exertion, intensity and duration of effort, but that has been mainly analyzed in activities with a continuous motor pattern (running, cycling, ...), in this post we add what does it implies and the possible relationship with the way that it's mainly been used for the analysis of the conditional demonstration of soccer players in games and training, that basically uses distances (total, over a defined velocity threshold, ...) and it's relationship with short of "endurance", muscle fibers and energetic supply related.
Also, I introduce the basics of the concept of intermittency ... and let the door open to next post, in which I'll explain which is the essence of it, and the basics parameters to analyze it ...
Stay tuned, and enjoy.
Approaches and level of analysis of the physical demonstration of professional soccer players. Level 5 (part 2).
For starting the explanation of the intermittent approach, I have just choose a 45 minutes of a professional soccer player who was wearing a GPS unit, so you will see a typical graphic with HR and speed curves, in which we introduce how the activity of that player has been shown depending on his speed ...
Stay tunned,
Approaches and level of analysis of the physical demonstration of professional soccer players. Level 5 (part 1).
Today we start the 5th level of analysis of the physical demonstration of soccer players.
In this introducing entry I'll explain the basis of the approach, that is, I'll just introduce the 4th basic parameters for analyzing the intermittency: intensity of the actions, duration of the actions, intensity of the pause and duration of the pause.
Under my view, this 5th level is the heart & soul of the approach for the correct conditional analysis of soccer players, that means that while the traditional approach is based (as explained in previous posts) on the relationship between speed, intensity, time of effort (related with critical power ...) and exertion (but investigated and developed with CONTINUOUS activity motor pattern), this approach is based on the basic characteristics of the activity of intermittent motor pattern, in which speed is not always directly related with intensity, but specially not directly related with exertion ...
This differences are the constraints under which we are actually working, and the essence of some of the problems we have for distinguish between the analysis and control of the conditional load of sessions and tasks during training (and games) ... But this is the content of a future post.
So hope I'll be able to get your attention ...
Stay tuned!
