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
March 26,2020

New Delhi, Mar 26: As India continues its fight against coronavirus, the Board of Control for Cricket in India (BCCI) President Sourav Ganguly pledged to donate rice worth Rs 50 Lakhs to the needy people.
The Cricket Association of Bengal (CAB), in its statement, said Ganguly along with Lal Baba Rice will provide rice to people who have been put in government schools for safety and security.
"#Sourav to provide Free Rice to the Needy It is heartening to note that Sourav Ganguly along with Lal Baba Rice has come forward to provide free rice worth Rs 50 lacs to the needy people who have been put in government schools for safety and security. Hope this initiative of Ganguly would encourage other citizens of the state to take up similar initiatives to serve the people of our state. #CAB," CAB said in a statement.
CAB President Avishek Dalmiya has also lent support to the needy people as he donated Rs 5 lakhs to the Government's Emergency Relief Fund.
"CAB President donates 5 lakhs to the Government's Emergency Relief Fund to fight against #CoronaVirus/#Covid19," CAB said in a statement.
Prime Minister Narendra Modi on Tuesday announced a 21-day nation-wide lockdown to contain coronavirus.

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Agencies
July 7,2020

New Delhi, Jul 7: Wicket-keeper batsman MS Dhoni is known for his finishing heroics and ending the match with a big shot to send a billion people in a frenzy.

For over a decade, Dhoni's swashbuckling batting style, especially the famed helicopter shot, gave international bowlers a headache. As the former Indian skipper celebrates his 39th birthday today, let's relive his first century in international cricket.

It was on April 5, 2005, when Dhoni had registered his first international century. The former skipper registered the feat against Pakistan in the second ODI of the six-match series. The match was played at the Dr YS Rajasekhara Reddy ACA-VDCA Cricket Stadium in Visakhapatnam.

Dhoni had made his ODI debut against Bangladesh in 2004. However, he did not have a good outing as he scored just 19 runs in the three-match series. But the wicket-keeper truly arrived in the series against Pakistan in 2005, as he scored 148 runs in the second ODI of the six-match series at Visakhapatnam.

In the match, India won the toss and opted to bat first. The side lost Sachin Tendulkar's wicket in the fourth over of the innings and it brought Dhoni to the middle.

Dhoni, along with Sehwag, took on the Pakistan bowlers and the duo formed a 96-run stand, which saw Sehwag going past the 50-run mark. Sehwag (74) was sent back to the pavilion in the 14th over, but Dhoni then found support in Rahul Dravid and the duo stitched a 149-run stand.

Dhoni smashed 15 fours and four sixes in his innings and scored 148 runs from 123 balls, taking India's total to 356/9 in the allotted fifty overs.

India then managed to defend the total as the side bundled out Pakistan for 298 as Ashish Nehra scalped four wickets.

Dhoni has so far played 350 ODIs with his highest score being 183 against Sri Lanka. He also remains the only captain to win all major ICC trophies (50-over World Cup, T20 World Cup, and Champions Trophy).

Also referred to as 'Captain Cool', Dhoni is known for his calmness and exquisite captaincy on the field.

Over the years, he has cemented his place as one of the finest wicket-keepers across the world. His agility behind the stumps has given India many breakthroughs as the Ranchi-based wicket-keeper has done successful stumpings in no time.

He is also known for his knack of opting for reviews and many have jokingly remarked to change the 'Decision-Review System's' name to 'Dhoni-Review System'.

In December 2014, he announced his retirement from Tests and gave a chance to the likes of Wriddhiman Saha. Dhoni called time on his Test career after playing 90 Tests, managing to score 4,876 runs at an average of 38.09.

Then in 2017, he handed over the captaincy to Virat Kohli in the 50-over format. However, the wicket-keeper enjoys a great camaraderie with the latter and the duo have been seen often taking decisions together on the field.

Under Dhoni's leadership, India also managed to attain the number one ranking in Test cricket. His Indian Premier League (IPL) franchise Chennai Super Kings (CSK) has also won the tournament thrice under his leadership.

Dhoni was slated to return to the cricket field on March 29 during the IPL's opening match between CSK and Mumbai Indians. However, the tournament has been postponed indefinitely due to COVID-19 pandemic.

The 39-year-old has been currently enjoying some time away from the game. He last played competitive cricket during the 2019 World Cup. 

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News Network
July 9,2020

Tokorozawa, Jul 9: Olympic boxing hopeful Arisa Tsubata is used to taking blows in the ring but it is during her work as a nurse that she faces her toughest opponent: coronavirus.

The 27-year-old juggles a brutal training regime in boxing gloves with long, irregular hours in surgical gloves at a hospital near Tokyo.

Tsubata mainly treats cancer patients but she said the virus was a constant threat, with medical experts warning at the peak of the pandemic that Japan's health system was close to collapse.

"We always face the risk of infection at medical facilities," she said.

"My colleagues and I have all worked under the stress of possibly getting infected."

Like most elite athletes, the virus played havoc with Tsubata's training schedules, meaning she welcomed the postponement of this year's Tokyo Olympics until 2021.

"It was a plus for me, giving me more time for training, although I wasn't sure if I should be so happy because the reason for the postponement was the spread of the infectious disease," she said.

Tsubata took up boxing only two years ago as a way to lose weight but quickly rose through the ranks.

"In a few years after becoming a nurse, I gained more than 10 kilos (22 pounds)," she laughed.

"I planned to go to Hawaii with my friends one summer, and I thought I wouldn't have much fun in a body like that. That is how I started boxing."

She quickly discovered a knack for the ring, winning the Japan national championship and a place on the national team.

But juggling her medical and sporting career has not always been easy and the first time she fought a foreign boxer came only in January, at an intensive training camp in Kazakhstan.

"That made me realise how inexperienced I am in my short boxing career. I was scared," she admitted.

Japanese boxing authorities decided she was not experienced enough to send her to the final qualifying tournament in Paris, which would have shattered her Tokyo 2020 dreams -- if coronavirus had not given her an extra year.

Now she is determined to gain the experience needed to qualify for the rescheduled Games, which will open on July 23, 2021.

"I want to train much more and convince the federation that I could fight in the final qualifiers," she said.

Her coach Masataka Kuroki told AFP she is a subtle boxer and a quick learner, as he put her through her paces at a training session.

She now needs to add more defensive technique and better core strength to her fighting spirit and attacking flair, said Kuroki.

"Defence! She needs more technique for defence. She needs to have a more agile, stronger lower body to fend off punches from below," he said.

Her father Joji raised Arisa and her three siblings single-handedly after separating from his Tahitian wife and encouraged his daughter into nursing to learn life-long skills.

He never expected his daughter to be fighting for a place in the Olympics but proudly keeps all her clippings from media coverage.

"She tried not to see us family directly after the coronavirus broke out," the 58-year-old told AFP. "She was worried."

Tsubata now want to compete in the Games for all her colleagues who have supported her and the patients that have cheered her on in her Olympic ambitions.

"I want to be the sort of boxer who keeps coming back no matter how many punches I take," she said.

"I want to show the people who cheer for me that I can work hard and compete in the Olympics, because of them."

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