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
February 24,2020

Wellington, Feb 24: Indian batsmen's inadequacies in adverse conditions were laid bare as they crashed to an embarrassing 10-wicket defeat against a ruthless New Zealand side that wrapped up the opening Test in just over three days here on Monday.

Starting the day on 144 for four, India were all out for 191 in their second innings. This was only a shade better than their dismal 165 in the first innings, which eventually proved to be decisive.

Trent Boult (4/39 in 22 overs) and Tim Southee (5/61 in 21 overs), the most under-rated new ball pairs in world cricket, showed that when it boils down to playing incisive seam and swing bowling, this batting line-up is still a work in progress.

The required target of nine runs was knocked off by New Zealand without much ado for their 100th Test win.

India's last defeat was against Australia at Perth during the 2018-19 series but the loss at the Basin Reserve would hurt them more because the visitors have not surrendered in such a fashion of late.

There was no resistance from a star-studded line-up and more than intent, the failure was due to poor technique on a track that had something on the third and fourth day as well.

This is a team that plays fast bowling much better than their predecessors, the reason for their success on the bouncy Australian tracks.

But when it comes to facing conventional seam and swing bowling in testing conditions, they are yet to learn the art of saving a Test match.

India had lost the mental battle on the first day itself when they saw the moisture on the wicket.

The toss became a factor and not for one session did they look comfortable. Mayank Agarwal was the only batsman, who felt at home in patches, as New Zealand showed what a Test match strategy is all about.

If the first innings was about mixing back of length deliveries with fuller length balls, the second innings saw the pacers coming from round the wicket and targeting the rib-cage. The line was disconcerting and it stifled them for good.

It affected their mindset and once Ajinkya Rahane and Hanuma Vihari stepped out on the fourth morning, defeat was written all over as both looked ill-equipped to handle such high quality seam bowling.

Rahane (29 off 75 balls) and Vihari (15 off 79 balls) are players who only play long-form cricket at the international level and both are known for their patience.

But little would have the Indian vice-captain apprehended that he would get a delivery from Boult, which he thought would move away after pitching but it held its line and he had no option but to jab at it, and all he got was an edge.

Southee, who bowls a lovely classical outswinger, then bowled an off-cutter from the other end and before Vihari could comprehend, it came back sharply to peg the stumps back.

Within first 20 minutes, the two seasoned practitioners of swing had knocked the stuffing out of India's resistance.

Rishabh Pant (25 off 41 balls) batted only in the manner he can and played one breathtaking shot off Southee, a slog sweep off a 130 kmph-plus delivery to the deep mid-wicket boundary.

But there was too much left to do with too little support from the other end. Bending on one knee, he tried another audacious slog scoop but couldn't clear.

Southee, who had a terrific match, deservingly completed his 10th five-wicket haul and all it took was 16 overs to end the innings and the match.

New Zealand now have 120 points in the World Test championship and India stayed on top with 36 points.

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News Network
April 12,2020

Mumbai, Apr 12: Always eager to share his vast knowledge and experience, cricket icon Sachin Tendulkar has interacted with 12,000 doctors on sports injuries.

In his over two decade long illustrious career, Tendulkar suffered many health issues, the most prominent being the tennis elbow injury.

The veteran of 200 Tests and 463 ODIs, got to know through one Dr Sudhir Warrier, an orthopaedic surgeon, that several young doctors across the country were utilising the lockdown time to effectively gain knowledge on sports injuries through live webinars.

A session on sports injuries was held on Saturday and Tendulkar, knowing that his experiences will help these doctors, volunteered to be a part of it.

Tendulkar, accordingly, interacted with around 12,000 doctors, who attended the session.

It is reliably leanrt that the 46-year-old legend said he was grateful to the medical fraternity for their service.

During the session, the young orthopaedic doctors got to know how the requirements and treatment outcomes of athletes are different from regular patients, sources said.

Dr Warrier moderated the session with Dr Nitin Patel, physiotherapist, who has worked with Indian cricket team and IPL franchise Mumbai Indians.

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July 22,2020

Derbyshire, Jul 22: Ahead of the upcoming Test series against England, Pakistan pacer Sohail Khan has credited bowling coach Waqar Younis for teaching him how to swing the ball late.

On the third day of the practice match between Azhar Ali's Team Green and Babar Azam's Team White, the 36-year-old Khan returned figures of five for 50 in 20.1 overs which saw the former fold for 181 in the first innings before they staged a comeback on the final day to win the match by six wickets.

Prior to the practice match, Sohail had a conversation with bowling coach Waqar Younis on the art of late swing. The pacer shared how the presence of the bowling legend in the support staff helped him gear up for the four-day match.

"The conditions in England are swing conducive so every fast bowler gets the ball to move. I asked Waqar bhai to teach me how to swing the ball late. It took him only two minutes to explain it to me. It is because of his tips that I took five wickets in the first innings," Khan said in a release issued by the Pakistan Cricket Board (PCB).

"I am eager to learn from Waqar Bhai. I follow him wherever he goes and speak to him about the art of bowling as he has an abundance of knowledge to share. A few days back I was struggling with something while bowling, I thought of reaching out to him and even before I spoke to him about it, he said he knew what I wanted to talk to him about and he explained it to me in a minute," he added.

During Pakistan's tour of England in 2016, Sohail played a crucial role in helping Pakistan secure a 2-2 Test series draw by returning two five-wicket hauls in as many matches.

In total, he picked up 13 wickets at 25 apiece and finished as the third-best wicket-taker.

"Definitely, it is an honour for me to return to the side. I had taken two fifers here against England in 2016 and now in the practice match, I have started off with five wickets so I am feeling very good. We had been at our homes for the past four months due to coronavirus so starting off on a high feels nice," Khan said.

Prior to Sohail's five wickets, 17-year-old Naseem Shah made a big impact when he took five wickets for Team Green. The strength of Pakistan's pace attack was further established as Mohammad Abbas and Shaheen Shah Afridi picked up three wickets each providing valuable support to Naseem and Sohail respectively.
Naseem and Shaheen finished the match with six and four wickets respectively.

Shedding light on the youngsters' performances, Sohail said: "It gives me immense pleasure to see Naseem Shah. He bowls consistently at 150kph. Just like him, Shaheen Shah Afridi is another good bowler. I like both of them."

"It gave me great happiness to see Naseem pick five wickets in the first innings. He is in rhythm and is looking great. What is astonishing is that he is playing in these conditions for the first time but still he is doing so well. Shaheen has also been phenomenal," he added.

Pakistan and England are slated to play three Tests and as many T20Is against each other. The first Test will be played at Manchester from August 5.

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