In world record, Bolt triumphed over air

July 26, 2013

Bolt_triumphedParis, Jul 26: Scientists today said Usain Bolt performed a feat of biomechanics when he ran 100m in a record 9.58sec at the 2009 World Championships in Berlin.

Crossing the line in a time that is still a world record meant Bolt had to muster "truly extraordinary" power and energy to overcome exceptional drag, they said.

Taking into account the altitude of the Berlin track, the temperature at the time of the race and the resistance caused by Bolt's 1.95m (six feet five inch), 94-kilo (207-pound) frame, the researchers calculated he had a drag coefficient of 1.2, which is less aerodynamic than the average human.

Bolt hit peak power after only 0.89 seconds, expending 81.58 kilojoules of energy by the time he finished the race.

But 92.21 percent of this energy was used to overcome air resistance, according to a paper appearing in the European Journal of Physics. Only 7.79 percent was used to achieve motion. After 41 strides, he crossed the line at 43.92 kilometres (27.29 miles) per hour.

"The enormous amount of work that Bolt developed in 2009, and the amount that was absorbed by drag, is truly extraordinary," said scientist Jorge Hernandez from the National Autonomous University of Mexcio.

"It is so hard to break records nowadays, even by hundredths of a second, as the runners must act very powerfully against a tremendous force which increases massively with each bit of additional speed they are able to develop.

"This is all because of the 'physical barrier' imposed by the conditions on Earth. Of course, if Bolt were to run on a planet with a much less dense atmosphere, he could achieve records of fantastic proportions."

The team compared Bolt's time in Berlin with his previous world-record time, of 9.69sec, set during the 2008 Beijing Olympics. In Berlin, he benefited from a tiny tailwind of 3.23 kph (2 mph), the researchers found.

Without this boost, he would have come in at 9.68sec, thus beating the previous mark by 0.01sec. The analysis was made from data provided by the International Association of Athletics Federations (IAAF), whose laser tracker recorded Bolt's position and speed every 0.1 of a second in Berlin.

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News Network
July 21,2020

Melbourne, Jul 21: Cricket Australia's chief executive Nick Hockley has said that the Indian players and staff will most likely be asked to face two weeks of quarantine before the four-match Test series.

This scenario will bring the Adelaide Oval and its newly constructed hotel firmly into view as the sort of biosecure bubble, ESPNCricinfo reported.

India and Australia are slated to face each other in a four-match Test series, which is to begin from December 4 at Brisbane.

"The two-week quarantine is pretty well-defined. What we are working on is making sure that even within that quarantine environment, the players have got the absolute best training facilities, so that their preparation for the matches is as optimal as it can possibly be," ESPNCricinfo quoted Hockey as saying.

"Certainly the fact that the Adelaide Oval has a hotel. It does provide a facility not dissimilar to Old Trafford or Ageas Bowl where the hotels are integrated into the venue," he added.

Hockley also said that an exacting standard of biosecurity and testing would be applied before the series against India as the coronavirus cases are spiking in the subcontinent.

"It's widely known and it's unlikely that international travel restrictions would have lifted by the time that India will be due to come into the country. Clearly there will be testing regimes. We will be able to test people before that they get on to the plane and it is the nature of the situation of making sure we have the quarantine arrangements in line with government and health authority protocols," Hockley said.

"The key thing for the players is that there's regular testing and that we appropriately quarantine them when they come in and all of those plans are currently in development," he added.

The International Cricket Council (ICC) on Monday announced the postponement of the T20 World Cup 2020 slated to be held in Australia from October 18-November 15 due to the coronavirus pandemic.

Following the announcement, the BCCI is likely to go ahead with the Indian Premier League (IPL) in the October-November window. However, it is known where the T20 tournament will be played as cases continue to rise in India.
"I think the BCCI has made no secrets that they are considering what that means for the IPL. For us, it's about getting a bit of an understanding and certainty around what that means. Clearly, in a normal course, some of our best players are obviously top picks for those IPL teams," Hockley said.

"It's a bit premature to speculate on that. We need to understand what the plans are if any and once we understand that we will make decisions accordingly," he added.

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Agencies
April 14,2020

Tokyo, Apr 14: Tokyo organizers said Tuesday they have no B Plan in the event the Olympics need to be postponed again because of the coronavirus pandemic.

Masa Takaya, the spokesman for the Tokyo Olympics, said organizers are proceeding under the assumption the Olympics will open on July 23, 2021. The Paralympics follow on Aug. 24.

Those dates were set last month by the International Olympic Committee and Japanese officials after the coronavirus pandemic made it clear the Olympics could not be held as scheduled this summer.

We are working toward the new goal, Takaya said, speaking in English on a teleconference call with journalists.

We don't have a B Plan. The severity of the pandemic and the death toll has raised questions if it will even be feasible to hold the Olympics in just over 15 months. Several Japanese journalists raised the question on the call.

All I can tell you today is that the new games' dates for both the Olympic and Paralympic Games have been just set up, Takaya said.

In that respect, Tokyo 2020 and all concerned parties now are doing their very best effort to deliver the games next year." IOC President Thomas Bach was asked about the possibility of a postponement in an interview published in the German newspaper Die Welt on Sunday.

He did not answer the question directly, but said later that Japanese organizers and Prime Minister Shinzo Abe indicated they could not manage a postponement beyond next summer at the lastest.

The Olympics draw 11,000 athletes and 4,400 Paralympic athletes and large support staffs from 206 national Olympic committees.

There are also questions about frozen travel, rebooking hotels, cramming fans into stadiums and arenas, securing venues, and the massive costs of rescheduling, which is estimated in Japan at 2 billion- 6 billion.

Tokyo 2020 CEO Toshiro Muto addressed the issue in a news conference on Friday. He is likely to be asked about it again on Thursday when local organizers and the IOC hold a teleconferene with media in Japan.

The other major question is the cost of the delay; how much will it be, and who pays? Bach said in the Sunday interview that the IOC would incur several hundred million dollars in added costs. Under the so-called Host City Agreement, Japan is liable for the vast majority of the expenses.

This is impossible to say for now, Takaya, the spokesman said.

It is not very easy to estimate the exact amount of the games' additional costs, which have been impacted by the postponement."

Tokyo says it's spending 12.6 billion to organize the Olympics. But a Japanese government audit published last year says the costs are twice that much. Of the total spending, 5.6 billion in private money. The rest is from Japanese governments.

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Agencies
May 26,2020

Some of the ICC guidelines on resumption of cricket border on the impractical and will need a review when the cricketing world is closer to action, feel former players Aakash Chopra, Irfan Pathan and Monty Panesar.

Last week, the International Cricket Council recommended a host of "back to cricket" guidelines including 14-day pre-match isolation training camps to ensure the teams are free from COVID-19.

The world body issued training as well as playing guidelines which will drastically change the way the game is played.

Among them are regular hand sanitising when in contact with the ball, no loo or shower breaks while training, minimising time spent in the changing room before and after a game, no use of saliva on ball and no handing over of personal items (cap, sunglasses, towels) to fellow teammates or the on-field umpires.

"Social distancing is very doable in individual sport but very tough in a team sport like cricket and football. If you need a slip during the game, would you not employ it?

"If the team is going through a 14-day quarantine and is being tested for COVID-19, I am fine with that process. Now, after that, if we have more guidelines for the players during the game, then you are making things complicated. Then there is no point of a quarantine period," former India pacer Pathan told PTI.

Safety cannot be compromised but regularly sanitising hands during the game will be too much to ask from the players.

"Safety is paramount but we should not make the game complicated. If a bowler or fielder has to sanitise hands every time he touches the ball, then it would be very difficult.

"You can shorten the process of giving the ball to the bowler. Instead of the usual chain (wicket-keeper to cover fielder to bowler), the keeper can straight away give the ball to the bowler but even then the bowler will have to sanitise hands six times in an over," said Pathan seeking more clarity on the guidelines.

Former India opener Chopra said it is still pre-mature to prepare a fixed set of guidelines for resumption of cricket as the situation is evolving "every day".

"That (regular hand sanitisation after contact with ball) is obviously impractical but my big question is when the game happens in a bio secure environment and everyone is quarantined and tested, do these additional measures make a difference?

"On the field, I can still understand but what happens when you go back into the dressing room? How do you practice social distancing there? So it becomes quite complicated.

"To be honest it is all very premature. Once they get closer to resumption, which will take some time, there will be more clarity," said Chopra.

International cricket is likely to resume in July with England hosting West Indies and then Pakistan.

Bundesliga football league has already begun in Germany behind closed doors and by the time cricket resumes, more sporting competitions would have restarted and Chopra feels that will help cricket decide the way forward in post COVID-19 times.

"By the time cricket resumes, more football would have started after Bundesliga. Cricket can take lessons from there, collect data and ideas and see what is practical and what is not."

Former England spinner Panesar foresees the start of the England-West Indies series making things a lot clearer for the entire fraternity than they are at the moment.

"The 14 day quarantine is very much needed and well done to the ICC for including that. I think we will see resumption of international cricket with England hosting West Indies in July. We might have some practical ideas then, the other countries would also be watching keenly and will learn how to go about it.

"But measures like regular hand sanitising is not going to be practical. May be you could sanitise every one hour but it can't be regular during the game," said Panesar.

While Pathan feels the on-field safety measures will make managing over-rate a bigger challenge for teams, Chopra said no loo or shower breaks during training won't be that much of an issue.

"Training is still controllable. You don't have to be there for a long time but you would still have to use the restroom at some stage. You may avoid taking a shower but you will have to use the restroom.

"I think the idea of these guidelines is to make cricketers more aware that you have to take care of yourself and inculcate habits which are in everyone's interest in the current scenario," added Chopra.

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