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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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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News Network
February 18,2020

Berlin, Feb 18: Sachin Tendulkar being lifted on the shoulders of his teammates after their World Cup triumph at home in 2011 has been voted the Laureus best sporting moment in the last 20 years.

With the backing of Indian cricket fans, Tendulkar got the maximum number of votes to emerge winner on Monday.

Tendulkar, competing in his sixth and last World Cup, finally realised his long-term dream when skipper Mahendra Singh Dhoni smacked Sri Lankan pacer Nuwan Kulasekara out of the park for a winning six.

The charged-up Indian cricketers rushed to the ground and soon they lifted Tendulkar on their shoulders and made a lap of honour, a moment etched in the minds of the fans.

Former Australian skipper Steve Waugh handed the trophy to Tendulkar after tennis legend Boris Becker announced the winner at a glittering ceremony.

“It's incredible. The feeling of winning the world cup was beyond what words can express. How many times you get an event happening where there are no mixed opinions. Very rarely the entire country celebrates,” Tendulkar said after receiving the trophy.

“And this is a reminder of how powerful a sport is and what magic it does to our lives. Even now when I watch that it has stayed with me.”

Becker then asked Tendulkar to share the emotions he felt at that time and the Indian legend put in perspective how important it was for him to hold that trophy.

“My journey started in 1983 when I was 10 years old. India had won the World Cup. I did not understand the significance and just because everybody was celebrating, I also joined the party.

“But somewhere I knew something special has happened to the country and I wanted to experience it one day and that's how my journey began.”

“It was the proudest moment of my life, holding that trophy which I chased for 22 years but I never lost hope. I was merely lifting that trophy on behalf of my countrymen.”

The 46-year-old Tendulkar, the highest run-getter in the cricket world, said holding the Laureus trophy has also given him great honour.

He also shared the impact the revolutionary South African leader Nelson Mandela had on him. He met him when he was just 19 years old.

“His hardship did not affect his leadership. Out of many messages he left, the most important I felt was that sport has got the power to unite everyone.

"Today, sitting in this room with so many athletes, some of them did not have everything but they made the best of everything they had. I thank them for inspiring youngsters to pick a sport of their choice and chase their dreams. This trophy belongs to all of us, it's not just about me.”

In a tweet on Tuesday, Tendulkar dedicated the award to his country, teammates and fans.

"Thank you all for the overwhelming love and support! I dedicate this @LaureusSport award to India, all my teammates, fans and well wishers in India and across the world who have always supported Indian cricket," he tweeted.

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News Network
January 27,2020

Hamilton, Jan 27: In awe of Jasprit Bumrah, New Zealand wicketkeeper Tim Seifert says the Indian speedster's subtle variations have been difficult to pick in the ongoing T20 series and his side needs to a learn a thing or two about adapting from the visitors.

India beat New Zealand by seven wickets in the second T20 International in Auckland on Sunday to grab a 2-0 lead in the five-match series.

Bumrah returned with figures of 1-21 from his four overs as Indian skipper Virat Kohli changed his bowling plans from the first game.

"Even in the first game, Bumrah bowled slower balls that were going wider. Normally, death bowlers get into straighter lines, plus yorkers and mix it with chest height. He kind of changes things a lot and is tougher to play," Seifert said.

"...the ball was holding a lot more which made it tougher. So sometimes as a batsman you have to move away from the stumps and see if they bowl straight. I was backing myself to do something different instead of just standing there at the wicket," said the stumper, who remained unbeaten on 33 off 26 balls.

"It was tricky and the ball was holding a little bit. When Kane (Williamson) got out in the over against Yuzvendra Chahal, we knew it was the over to push because they had Bumrah coming back," he added.

He said New Zealand batsmen need to take a cue from their Indian counterparts on how to adapt to different conditions quickly.

"...Indian batsmen showed how to get under the ball and time it. They showed it a couple of times that and on the slower wickets you just have to keep it like that. Once you lose your shape, you are not in position," he said.

"Try to get them (bowlers) off line or off balance, try to get into that position to hit good balls. That's T20 cricket as well. Sometimes it's going 100 per cent but some times you have to take a breath and re-assess. Indian batters did that well."

Seifert believes New Zealand bowlers did reasonably well in the two games but they have been outplayed by the Indian batsmen.

"To be honest, in the first game they were 110-1 and they had wickets in hand. We didn't bowl too badly in that first game. In the second game, we only got 130 and it is tough to bowl at Eden Park (with that total)," he said.

"170 was the target in mind but once you get 130 on the board, that was going to be very hard at Eden Park against a team that is very strong and playing really well. But our spinners were outstanding. Good balls have gone to boundary.

He said coming into the T20 series on the back of a lost Test rubber in Australia also didn't help New Zealand's cause in the first two games.

"Boys are coming off a Test series (in Australia) and a lot of them haven't played T20 cricket for a while," he said.

"But for some like me, I have had the Super Smash for the last two months, so I have played a lot of T20 cricket. They have two games under their belt now so hopefully they will have a better understanding."

Asked if New Zealand would want to play on India's strength of chasing, Seifert replied, "Even in ODI cricket, India have chased down big totals but I think on that wicket it was going to get slower and slower.

"But with that small target on Eden Park, something special has to happen with top six (for a collapse). One batsman got fifty and the other was batting very well. We needed top five-six in the first 10 overs," he said.

The Black Caps are still confident of bouncing back in the series.

The third T20 will be played here on Wednesday before back-to-back matches in Wellington and Mt Maunganui. Seifert said they would like to replicate the 2019 tour of India, where New Zealand came out 2-1 victorious in the three-match series.

"We have lost the first two games but we haven't played badly. We definitely haven't played our best though while India has played very well. If we lose the series on Wednesday, it is not the end of the world. But if we can turn things around, and win, we will take things from there," he said.

"We won the series 2-1 last time, so we have to treat it like a three match series again. But we have to treat it like the first two are must-win games."

"We are not playing our best at the moment. There are 20-odd games before the World Cup, and that tournament is the pinnacle, so we will get there (in preparation),” he signed off.

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