Sarah Sjöström: she is the Sweden champion; she broke the Championship record in this race with time: 24.97 sec. she also the world record holder for this event by (24.43).
Farida Osman: she is the Egyptian champion; she
broke the African record in this race with time: 25.78sec.
Note: regarding for many changes
in shots of this video and the diagonal angle for the video this make it difficult
to know the exact water entry distance and angle
Reaction time (RT):
We will start with the Reaction time For This Race is Illustrated in the next picture:
The best (RT) is for Wallace Vanderpool
from Bahamas with RT: 0.60 sec it illustrated with pink color Also the RT for Sarah
Sjöström: 0.65 sec illustrated with red color and the RT for the Egyptian
Swimmer Farida is 0.70 sec illustrated with green color.
Streamline:
Sarah did not appear in the
streamline under the water during this video. But for Farida Osman she did 9
kicks to breakout and she open her arms in the last 3 kicks of the
streamline and which leads to increased resistance and this shown in the
following analytic video:
Breakout Distance:
There was a challenge in
determining the accurate breakouts distances Because of the diagonal angle for
this video but it had been reached to the result that outlined in the following
image:
Both Sarah and Farida almost
breakouts at the same distance with approximately
11.59 m but for the longest breakouts distance for this race goes for the Denmark swimmer Ottesen she breakout approximately at 14.20 m and it been clarified this
in the following picture:
Analysis data for performance are
shown in the following table:
what described in the previous
table that Sarah`s time is 24.97 and Farida time is 25.78 where the difference
between them about 0.82 sec. In addition, considering the average speed for
both swimmers, the difference in the distance between them is almost around 1.58
meters. It is worth mentioning that what draw my attention when analyzing this
race for both swimmers the Numbers of cycles for them is equal 23 cyc. and here
we should ask this question why there is a difference in the speed for both
swimmers Despite the length of each cycle and number of cycles is equal, but
also the stroke time (ST) for Sarah is (1.08) sec. less than the stroke time
for Farida (1.12) sec?
The answer for this question due
to the estimated speed that Sarah moves her arms and it depend more on undulation
curve for Sarah is shorter and more forward movement than Farida Osman as the
undulation curve for Farida more wider than Sarah, leading to increase the ups
and downs movement more than forward. As for Sarah, she go for 2.17 meters as an average in 1.08 sec for each cycle
while Farida takes a longer time in each cycle with average 1.12 sec to reach
2.17 meters in each cycle, and there is a an example picture for the undulation
curves:
In the first illustration of the
drawing shows a shorter wave, leading to more forward direction than up and
down. For the second illustration of the drawing, it shows a wider wave this leading
to increase more the up and down movement more than forward. In addition, this technique
for Farida can help her more in longer races such as 100 m and 200 m butterfly
with a different rate in (Race Pace). The following analytic video shows the
difference between the undulation waves for both swimmers:
Breathing plan:
Breathing plan for Sarah is 23
cycle without breathing. And this gives her more advantage to go forward is the
same plan she followed when she broke the world record in 2014, but the number
of cycles was 21 cyc, you can see the world's 50m butterfly swimming Sarah Sjöström analysis
As for the Egyptian swimming Farida Osman,
there was a significant difference in shooting. Which led to the difficulty of
identifying a full breathing plan but shows that Farida take a breath at
the 5th, 9th, 17th and 18th cycle during
this race leading to increased waviness curve while the requirement for this race is to shortening the undulation
curve and the up and down movement as much as possible.
By: C.Moemen Arafa
*** Please note- Mr. Moemen Arafa’s first language is Arabic. English is his second language. We apologize in advance for any editorial errors. Thank you.
Why the difference between line wave israces?
ReplyDeleteWhy the difference between line wave israces?
ReplyDeletefor Sarah is short wave and it more forward movement than Farida she hae a wider body wave it mean more up and down movement more than Sarah.
ReplyDelete