11/07/2017   Bent knee and loss of contact evolution in Olympic period 2010 - 2017






Before analyzing data for the third decade under review, although we are still in the process, we can frame the speeds expressed in km/h and averaged over the first 20 athletes.

 
It is only good to remember that the average speeds obtained by athletes during 2016 do not take into account the performance of Russian athletes.
 
 
 

Speed  20km - Men 50km - Men 20km - Women
       
Minimum  14,93 km/h (2010) 13,14 km/h (2010) 13,50 km/h (2010)
2010 minimum minimum minimum
2011  15,02 km/h 13,38 km/h 13,58 km/h
2012 15,20 km/h maximum maximum
2013 15,08 km/h 13,41 km/h 13,65 km/h
2014 15,08 km/h 13,48 km/h 13,65 km/h
2015 maximum 13,35 km/h maximum
2016 15,11 km/h 13,44 km/h 13,57 km/h
Maximum  15,25 km/h (2015) 13,55 km/h (2012) 13,78 km/h (2012-2015)

 

 

 

Evoluzione nel periodo 2010 - 2017

 

 

 

 

 

Competizione

Athletes 

at the Start

Red Cards

issued

%

on athletes

       
London 2012 180 124 68,89%
50km Men 63 50 79,37%
20km Men 56 37 66,07%
20km Women 61 37 60,66%
       
Rio de Janeiro 2016 228 175 76,75%
50km Men 80 60 75,00%
20km Men 74 60 81,08%
20km Women 74 55 74,32%
       
Total in Olympic from 2011 to 2017 408 299 73,28%
50km Men 143 110 76,92%
20km Men 130 97 74,62%
20km Women 135 92 68,15%

 

 
The first answers we have from reading this table tell us that:
 
- The number of athletes participating in the Olympic Games had a major increase during this period.
This is an important consideration because it means that new Countries have faced international limelight.
From Barcelona 1992, race walking has always witnessed a numerical increase in participation, except for 2004 and 2008 compared to Sydney, where we have witnessed constant values. The increase in 24 years is 76.74% (129 athletes in 1992 and 228 athletes in 2016).
We believe that a few specialties of the Olympic program can boast such vivacity performances.
 
- The 50km continues to be judged more rigorously by juries than the two fastest races, but less than the previous decade.
Of particular interest, however, is the decrease in the percentage of red cards on the number of athletes obtained in London 2012, despite a nearly constant average speed (13,55 km/h compared to 13,56 km/h in the previous decade)
 
 
- the average speed of the top 20 athletes on the distance of 20km women has increased (minimum of 13,50 km/h in 2010 compared with 13,49 km/h in the previous decade and maximum of 13,78 km/h in 2012 and 2015 compared with 13,67 km/h in the previous decade), and explains the increase in female rigor (2000-2009: 59.20% over the 2010-2017 period: 68.15%), but that it is always lower than the male one.
 

 

- in the 20km of men there is a nearly constant trend of red cards for all athletes (2000-2009: 72.92% over the period 2010-2017: 74.62%), which can also be explained by the almost constant correlation of average speed of the top 20 athletes
 
 
 
 
 

Red cards for bent knee and loss of contact

 

 

 

Competition Red Cards Bent Knee % Loss of Contact %
           
London 2012 124 34 27,42% 90 72,58%
50km Men 50 24 48,00% 26 52,00%
20km Men 37 5 13,51% 32 86,49%
20km Women 37 5 13,51% 32 86,49%
           
Rio de Janeiro 2016 175 63 36,00% 112 64,00%
50km Men 60 36 60,00% 24 40,00%
20km Men 60 14 23,33% 46 76,67%
20km Women 55 13 23,64% 42 76,36%
           
Total in Olympic from 2011 to 2017 299 97 32,44% 202 67,56%
50km Men 110 60 54,55% 50 45,45%
20km Men 97 19 19,59% 78 80,41%
20km Women 92 18 19,57% 74 80,43%

 

 

If Sydney had been the Olmpiade of the turn, it was the same in London 2012.

 
 
 
- in the 50km the jury detects a substantial parity in errors (52% for lack of contact and 48% for knee release.
 
 
 
- in the two 20km the most sanctioned mistake is loss of contact (86.49%)
 
 
 
We have already said that new athletes from new Countries have been looking at the Olympic landscape in recent years. Now the consideration we make that they already look sufficiently prepared not only in organic terms, but also in technical terms.
 
Let us remind you that the error of bent knee is the hardest to correct at the technical level, and to observe a lower number of red cards for bent knee can only do a great pleasure.
 
 
 
Another consideration derived from the analysis of the table above is that of the percentage of error detected by the judges in the two 20km races.
 
London and Rio de Janeiro show almost identical percentages. Workers can not go unnoticed, but above all, also have a favorable impact if viewed from the point of view of the homogeneity of judgment. We only remind ourselves that the two Olympic judges team were formed by 5/8 by the same judges and only 3 out of 8 were the turn over. It is clear that this consideration can only be positive.

 

 

Final considerations

 
 
 
We have statistically cleared the last 25 years of Olympic race walk. Our goal was to imagine if the prospect for judges might be that of a future increase in bent knee sanctions or those for loss of contact.
 
 
 

Competition Red Cards Bent Knee % Loss of Contact %
           
Overall Olympics from 1992  903    353   39,09%  550   60,91%
50km Men 349 202 57,88% 147 42,12%
20km Men 286 83 29,02% 203 70,98%
20km Women 268 68 25,37% 200 74,63%

 

 

1.- The bent knee is weighed, as a technical error, just under 40% and at the opposite, loss of contacts weighs just over 60%
 
2.- The bent knee is much more highlighted in the 50km where it represents almost 60%, but on certain occasions (i.e.: after changing the rule in 1996) it was by far the dominant error.
 
3.- In the two 20km races there is very little difference in discrimination between men and women. The two technical errors are highlighted in the same way regardless of sex.
 

 

We have no difficulty in affirming that, in our opinion, the present reality and we also think that the future might reserve the following:
 
 
 


Competition

Bent Knee

%

Loss of Contact

%

Three races all-together

 

50% (maximum)

35% (minimum)

 

50% (minimum) 

65% (maximum)

50km Men

60% (maximum)

50% (minimum)

40% (minimum)

50% (maximun)

20km Men

35% (maximum)

20% (minimum)

65% (minimum)

80% (maximun)

20km Women

35% (maximum)

20% (minimum)

65% (minimum)

80% (maximun)

 

 

 

 

Full report (from 1992 to 2017) could be download in the section Tecniques, rules and conventions, sub-section Publications and reports on race walking, or download directly from this link: clik here