06/07/2017   Bent knee and loss of contact evolution in Olympic period 1990 - 1999






On June 15, 2016, we published an article entitled "Discriminate between bent knee and loss of contact".

 
 
The aim was to analyze the different perception of the two technical errors by the different juries in the last two Olympic Games and compare it with the decisions taken in 2017 in four international races and in one national race.
We have been requested to delne into this subject from some coaches and journalists as well to.
 
Common interest has led us to a retrospective analysis of what has happened in the last seven editions of the Olympic Games.
History often serves to remember the fixed points, mistakes and positivites chosen by those who preceded us. Again this time, the goal is to provide our readers with a quarter of a century of our specialty from a technical point of view.
 

However, we refer to our readers as we wrote on June 15, 2016, and the detail about the history that had passed in Italy, which the very wise and pragmatic Pino Dordoni called "the historical error of putting into practice the different rule even though in domestic competitions only, which could not be accepted at international level. This kind of choice turned from a good fairy to bad witch and immediately came back to Italian athlete when he came out of the Country".

 
We also repeat what we wrote about time evolution.
 
Race walking of that period was, however, very different from today's.
An eye of an careful judge was still able to seize a flight, which today is hardly possible to do and now we are arguing to use the "electronic eye" to put all the athletes on the same level but its application is not yet in the starting tapes although it is in the advanced design stage.
 
Race walk of our days, however, leads some athletes often to make both mistakes compared to the past, in which at lower speeds and frequencies one could still perceive a clear difference between the two types of technical error.
Nowadays sometime two athletes who in their progression have a gesture with a flying phase and also an impact with the leg advancing to the ground bent, are differently evaluated by the jury, while this should not happen.
 
To this we like to add that when in 1999 the IAAF Walking Committee decided to make public the reason (bent knee or loss of contact with the ground) of the red card posted on DQ board against the single athlete did it with the main goal of giving all athlete's ability to know his technical situation in the race, but above all, with the aim to help his coach, even in future races.
We have long ago emphasized the importance of correct reporting. Today we say it even more.
 
We divided our work into decades of history (1990-1999), (2000-2009), (2010-2019), and we segmented them into the three usual Olympic races to give our readers the ability to draw their own historical and technical considerations.
 
 
 

Evolution of decade 1990 - 1999

 

 

 

Competition

Athletes 

at the Start

Red Cards

issued

%

on athletes

       
Barcelona 1992 129 117 90,70%
50km Men 43 44 102,33%
20km Men 42 38 90,48%
10km Women 44 35 79,55%
       
Atlanta 1996 156 134 85,90%
50km Men 52 50 96,15%
20km Men 60 46 76,67%
10km Women 44 38 86,36%
       
Total in Olympic before 2000 285 251 88,07%
50km Men 95 94 98,95%
20km Men 102 84 82,35%
10km Women 88 73 82,85%

 

 

The first answers we have from reading this table tells us that:
 
 
- The 50km is judged more rigorously by juries than the two fastest races.
 
 
- The 10km women, although the shortest race and therefore the fastest, has the least number of red cards against the athletes. The logical consequence is that it is to be asked: "But women walk better than men ?"
 
 
 
Red cards issued for bent knee and loss of contact
 
 

Competition Red Cards issued Bent Knee % Loss of Contact %
           
Barcelona 1992 117 36 30,77% 81 69,23%
50km Men 44 21 47,73% 23 52,27%
20km Men 38 11 28,95% 27 71,05%
10km Women 35 4 11,43% 31 88,57%
           
Atlanta 1996 134 43 32,09% 91 67,91%
50km Men 50 24 48,00% 26 52,00%
20km Men 46 12 26,09% 34 73,91%
10km Women 38 7 18,42% 31 81,58%
           
Total in Olympics before 2000 251 79 31,47% 172 68,53%
50km Men 94 45 47,87% 49 52,13%
20km Men 84 23 27,38% 61 72,62%
10km Women 73 11 15,07% 62 84,93%
 
 
 
 
The second answer is:
 
 
- The technical error in the 50km is almost equally distributed between bent knee and loss of contact with the ground. The percentages of Barcelona 1992 and Atlanta 1996 are almost identical.
 
 
- Loss of contact is the much higher technical error in the fastest races
 
 
- This is even more so in the women's race (shorter race of 10km).
 
 
 
We just want to remember that in the time considered the speeds expressed in km/h and averaged over the first 20 athletes (male & female) were those of the table below.
 
 
 

Speed  20km - Men 50km - Men 10km - Women 20km - Women
         
Minimum  15,07 km/h 13,32 km/h  14,01 km/h 13,51 km/h (1999)
         
Maximum 15,18 km/h 13,34 km/h 14,21 km/h 13,51 km/h (1999)
         

 

 

In the coming days we will continue this analysis referring to the period 2000 - 2009.