Showing posts with label RACE ANALYSIS. Show all posts
Showing posts with label RACE ANALYSIS. Show all posts

IAAF recognized Flo-Jo 10.49, Kiryu 10.01 did not ?

>> June 16, 2013

Governing body for athletics, the International Association of Athletics Federations (IAAF) has decided not to recognize YOSHIHIDE KIRYU as joint junior world-record holder in the 100 metres.

On April 29, 2013, the 17-year-old Japanese ran 10.01 (with a legal wind-speed +0.9) to equal the World Junior Record set by Trinidad's DARREL BROWN during the 2003 World Championships in Paris.

According to both IAAF and Japanese Association of Athletics Federations (JAAF), the wind instrument used during the (Mikio) Oda Memorial meet in Hiroshima, was not up to current international standards, which call for an ULTRASONIC wind gauge.

Since many decades ago, wind-gauge is compulsory for sprints, sprint-hurldes, and horizontal-jump events. For 100 metres, IAAF rules indicated wind is measured at halfway or 50m point (left side) along the straight for 10 seconds.

But the question is DOES it really measure the 'exact' value of wind-speed ?? kindly note reading +2.0 is the limit for record ratification as well as ranking acceptance. Thus, +2.01 (rounded up +2.1) of reading is already considered a non-legal performance.

Photo: SEIKO - state-of-the-art wind measurement for track and field uses ultra-sonic technology (IAAF)

In 1932 Olympics, three anemometers were installed at different points during the men's 100m final and all have shown inconsistent results, where +0.2 (positive) and the other one +0.4 (positive) measured at start, while -1.4 (negative) at half way. These results different to each other because of direction of the winds (blowing) during 10 seconds of measurement; tailwinds, cross-winds, or perhaps headwinds. Kindly note as well that the wind in lane 1 is not necessarily the same as that in lane 8.

In 1988 Olympic Trials in Indianapolis, USA, using the available and latest anemometer (brand: Omega), the women's 100m produced outstanding results, with Florence Griffith-Joyner in quarterfinal one breaking the World record (10.76 Evelyn Ashford 1984) in 10.49 (a massive improvement of 0.27 !!) with wind-speed 0.0 (no wind !!) recorded. Her best before coming to the trials was 10.96 only. In round one, she ran a stunning 10.60 with a +3.2 wind, and after that winning her semi and final races in 10.70 (+1.6) and 10.61 (+1.2) respectively.

An identical anemometer on the triple jump runway (adjacent to 100 metres) read mostly wind-aided (at least 93% of 46 readings were between 2.1-7.0 m/s), with flags around the stadium were flapping wildly, which was perhaps enough to nullify the record? If it's the case, Flo-Jo's fastest "wind-legal" time in 100m was 10.61, 2nd fastest on World's All-Time lists = also a World record.

Since 1997, the Association of Track and Field Statisticians (ATFS) has listed her 10.49 as "probably strongly wind assisted, but recognized as a World record".

Dependent to the angle of wind blowing, the anemometer would produces different reading. In Flo-Jo's 10.49 World record race, the anemometer recorded a +2.8 wind blowing from the left side perpendicular (91°) to the track, and this produces a 0.0 official wind measurement. But if that really were 0.0 reading, sprinters would surely have recorded much slower times.

Now the questions are, what might the reading be when the latest anemometer (ultrasonic) used in the 1988 Olympic trials ?? If Kiryu's 10.01 were in 1988, would there be a World record for juniors ratified?? is the introduction of ultrasonic wind-gauge would completely avoid any discrepancies in wind-reading data??

Recommended reading:

Vid 1 (Flo-Jo's 10.49 in 1988 Olympic Trials)
Vid 2 (Kiryu's 10.01 in Hiroshima 2013)


Biomechanics Analysis & Research - IAAF Daegu World Championships 2011

>> September 09, 2011

Here are some links with scientific information of the IAAF Biomechanics Research which taking place during the World Championships in Daegu. The project was conducted by the Korean Society of Sport Biomechanic (KSSB) and more detailed analysis will be published in the IAAF journal, New Studies in Athletics by next year.

Coaches and athletes are highly recommended to subscribe  the IAAF New Studies in Athletics' publication, click here for detailed information - it's quite cheap, USD 60.00 including shipping costs.


1) 100 meters - Usain Bolt 100m Analysis (Heat & SF) - Daegu 2011
2) 200 meters - Usain Bolt 200m 19.40s Analysis - Daegu 2011
3) High Jump - Jesse William, Dmitrik, Barry's Analyses (HJ Final) - Daegu 2011
3) High Jump - Biomechanical Analysis, Qualifications - Daegu 2011
4) Shot Put - Biomechanical Analysis, Qualifications - Daegu 2011
5) Javelin Throw - de Zordo, Thorkildsen, Martinez's Analyses - Daegu 2011


1) 200 meters - Analysis of Veronica Campbell, Jeter and Felix - Daegu 2011
2) 100m hurdles - Sally Pearson 12.28s Analysis (& 100m Final) - Daegu 2011
3) 100m hurdles - Biomechanical Analysis, Round 1 - Daegu 2011
4) High Jump - Anna Chicherova & Blanka Vlasic Analysis - Daegu 2011
5) Triple Jump - Analyses for Saladuha, Rypakova & Ibarguen - Daegu 2011


Asafa Powell 9.78s World Lead, Michael Frater 9.88s PB, Christophe Lemaitre 9.95s NR - Video & Analysis

>> July 01, 2011

Asafa Powell positions himself as the favorite to win the Gold medal at the 2011 World championships in Daegu. He ran the fastest time in the World this year with 9.78s +1.0 during the Diamond League meet in Lausanne yesterday (30 June 2011). It was one hundredth of a second faster than Tyson Gay's mark set in June 04 in Florida. Powell's teammate Michael Frater was second in a new personal best time of 9.88s. Third place went to French's Christophe Lemaitre who equaled his European U-23 and National record 9.95s.

From left: Christophe Lemaitre 9.95s, Asafa Powell 9.78s, Michael Frater 9.88s
Another Jamaican Nesta Carter was fourth in 9.95s, some way off his personal record of 9.78s set last year. Despite of finishing in fifth, Norway's Jayasuma Saidy-Ndure became the second ever European sprinter to break the sub-10 and sub-20 (19.89s) after Francis Obikwelu (9.86s & 19.84s) when he finished in 9.99s in the race that saw him had a "nearly perfect reaction" 0.107s (below 0.100 = false start). Unlike Michael Frater who won't run in the individual event in the World championships, Jayasuma Saidy who trained by a renowned track coach John Smith will be gunning for medal in both 100m and 200m.

What can you say when looking at Michael Frater's 9.88s performance ?

Michael Frater has the same height with Andre Cason won have ran under 10s three times within 26 hours in 1993 (9.96s, 9.94, 9.92s). Both sprinters stands 1.70m (5ft 6-half) and have won medals in the World championships. For a record, 10.00 seconds is the benchmark for World class sprinters and only the very best dipped below.

It was said that human may not able to run below 10s at low-altitude, now we have hundreds of sub 10s at low-altitude. Tall sprinters (above 6 "3) may be hindered by the gravity and may not run as fast as expected but Usain Bolt (6ft 5ins) has already ripped up the rule book. A whiteman has no possibility to break the 10s barrier because of the 'genetic incompatibility', but Lemaitre has been very consistent to run sub 10s. Advances in technology, scientific training method, nutrition and supplementation and so on have no doubt helped the advance in performances, just hard work will be the bottom line.

After Andre Cason, Leo Myles Mills, Coby Miller, Trindon Holliday, Walter Dix etc, Frater once again demonstrates to the World that a short sprinter has no limit in terms of times, consistency and to win medal at the World championships.

What makes you think that NOT EVERYONE is able to hit (at least) the world class times 10.0 seconds ?!?

Video of Men's 100m - IAAF Diamond League Lausanne 2011

Click here for full results of the IAAF Diamond League Lausanne 2011



To be updated




To be updated



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