Tuesday, 7 February 2012

Vision Of The Tennis Of Tomorrow

Babolat play and connect – data from your tennis racket
Wednesday, January 25th, 2012
Babolat announced last week that they are developing a tennis racket, prototype to be shown first at the Roland Garros, that will store data about your swing and “flow”. They released very little else about its capabilities, but Eric Babolat, CEO, commented:
“Innovation is only valuable if it advances the game of tennis to the benefit of the greatest number of people, in 1875, Babolat invented the first strings for tennis racquets. More than 135 years of innovation and progress later, I am proud to present today our vision of the tennis of tomorrow, brought by our Play & Connect racquet.”
Babolat play and connect tennis racket
The planned launch date is 2013, so hopefully we will hear more about it then, but if the sensors integrated are similar to accelerometers then we can expect positional, velocity and acceleration data of the racket during use. It will be interesting to see how they separate a stroke with general play (probably through the accelerations and velocity), how they average the data over a particular stroke (so will it tell us the speed of a forehand smash, baseline shot, dropshot?), how the data will be presented to the public in a meaningful way (is it better to hit it faster? I doubt it because the racket would need to go at a specific speed to hit the baseline, any faster and it would overshoot) and how this will affect performance characteristics such as weight, vibration, sound and so on. Sensors will soon be in every sports product we use, but the hardest part is making sense of the data which is extracted. Sometimes position, power and speed are not necessarily the key parameters to look for. Understanding Babolat’s vision for the “flow of data” is intriguing and I am interested as to the market – competition or training. Would people buy a training racket? I don’t know but looking forward to finding out.

Top 10 New Sports Technologies

That old saying that says a poor workman blames his tools holds true in sports as much as anywhere, but there's no question that having the absolute best equipment can make a big difference for the world's top athletes. Once you get to the Olympic level, the spread between first and last place can be truly tiny, so even the smallest technical advantage could mean the difference between standing on the top of the winner's podium, or being an also-ran.
When an Olympic champion uses a certain brand of equipment while achieving victory, the exposure can translate into big bucks for that brand at the sports-equipment store. After all, doesn't it make you look like a more serious competitor if you have the same gear as the person who crossed the finish line first? Knowing this, the big sports equipment companies pour major bucks into research, so they can develop the gear that top athletes will want to use.
Hit the Continue jump to read about 10 of the best new ideas that have come along since the last Olympics four years ago in Athens.

1. Speedo LZR Racer Swimsuit
EVENT UPGRADED Swimming
WHAT'S NEW? In the Olympic swimming pool, just a couple thousandths of a second can be the difference between winning and losing, so even the tiniest competitive edge is critical. Back in Athens we saw plenty of swimmers using the Speedo Fastskin to good advantage, but now Speedo has upped the ante with the LZR Racer. Developed in association with NASA and the Australian Institute of Sport, the LZR Racer uses a woven elastane-nylon and polyurethane material that's said to hold the body in a more hydrodynamic position, while expelling water and allowing for improved oxygen flow to the muscles. It also has ultrasonically welded seams to avoid drag.
DOES IT WORK? Since the suit was launched in February of this year, dozens of world records have already been broken by swimmers using the LZR Racer. I think that makes the answer an unequivocal yes.

2. Adidas AdiStar Rowing Shoes
EVENT UPGRADED Rowing
WHAT'S NEW? Silly me, I always figured rowing was mostly about upper body and arm strength. Clearly I am mistaken, and it turns out that leg power is equally, if not more important. To transfer all of that power into moving the scull, your feet need to have a solid and stable foundation, and Adidas provides one with their latest "made for Beijing" AdiStar rowing shoe. Featuring a lightweight rowing plate with stabilizing outriggers, the AdiStar is designed to provide a more direct transfer of power. It also has a so-called "speed heel" with built-in ventilation that's designed to keep the feet at the optimum temperature.
DOES IT WORK? Having a firm foundation for your feet allows all of your stroke power to be transferred into moving the scull. That can only result in a better times.

3. Doppler Lidar
EVENT UPGRADED Sailing
WHAT'S NEW? Sailing is all about getting wind into your sails that can push your yacht along, but other than licking your finger and pointing it up towards the sky, where do sailors get wind speed and direction info? For years they've been using Doppler radar systems similar to what weather forecasters use on TV, but the problem is these systems are pretty useless when there's little or no wind, which is precisely when sailors need the information.
This year in Bejing they're using a Doppler Lidar system, which scans the surface of the course with laser beams and measures beam scatter to provide a real-time readout of wind speed and direction over a large area.
DOES IT WORK? While all teams will have access to any data provided by the Doppler Lidar system, how well each team is able to interpret that data could mean the difference between winning and losing.

4. Morini CM 162 EI Air Pistol
EVENTS UPGRADED Air Pistol and Pentathlon
WHAT'S NEW? If you figured air pistols and cutting-edge technology didn't go hand in hand, think again. Modern air pistols use a compressed-gas capsule to propel the pellet. The catch is that even the tiniest uneven force in the firing action can be the difference between a bull's-eye and a lower score. The rules dictate that the trigger must require a minimum force of 500 grams to fire, but smoothness is still critical.
The new CM 162 El from Swiss manufacturer Morini takes this thinking a step further by replacing the traditional mechanical trigger with a switch that operates a battery-powered microchip-controlled firing mechanism. Two AAA batteries provide enough juice for 15,000 shots, with a pulsating red LED to indicate battery condition.
DOES IT WORK? A smooth trigger action is critical in pistol shooting, and what could be smoother than a simple switch? Look for many of the top shooters in Beijing to be using the CM 162 El.

5. Nike Precool vest
EVENTS UPGRADED All
WHAT'S NEW? With daily high temperatures expected to average around 85 degrees Fahrenheit, keeping cool is going to be a major consideration for many athletes. Just in time for Beijing, Nike has come up with a clever solution. The Precool is a vest that holds a bunch of prefrozen ice packs, similar to those blue ice packs you put in a cooler to keep your drinks cold. The athlete wears the frozen vest for about an hour prior to the start of competition, reducing his core temperature enough so the body won't be wasting energy trying to keep cool.
DOES IT WORK? Keeping cool is likely to be an issue for middle-distance and endurance events, so being able to start the event with you muscles warmed up but your core feeling as cool as a cucumber has to be a plus.

6. Gill Athletics OTE Composite FX Carbon/Aluminum Javelin
EVENT UPGRADED Javelin
WHAT'S NEW? Following 102 years as an Olympic event, you might figure that it would be hard to come up with new technology for a sport as straightforward as the javelin throw. But high-tech has its place in even this ancient sport. Rule changes introduced following the Athens games now allow for javelins made using carbon-fiber composites. And while there are strict minimum weights for Olympic javelins, adding carbon fiber can greatly reduce vibration and wobble, allowing for a straighter flight with less wind resistance.
DOES IT WORK? Javelin is another sport where inches count, and anything that gives you a straighter, truer flight has got to be beneficial.

7. Nike Ippeas Riding Boots
EVENT UPGRADED Equestrian
WHAT'S NEW? Equestrian events are about as steeped in tradition as the Olympics gets, and riding technology has practically stood still since the 19th century. Trust Nike to come along and shake things up, introducing a riding boot that addresses several issues at once. First, for comfort, Nike added a long zipper that eases the chore of taking them off. Then they added a special high-abrasion rubber on the medial (horse) side of the boot, to give the rider added control and stability in jumps. Finally in one of those slap yourself on the forehead V8 moments, they replaced those clunky strap-on spurs with a height-adjustable screw in titanium stud. Brilliant!
DOES IT WORK? While the zipper and screw-in spur are mainly convenience items that make the rider's life a little more comfortable, the extra-grippy inside surface should make it easier to control the horse, with less chance of falling off or being thrown.

8. Mizuno Frenzy 120 RB500 Carbon-Fiber Bat
EVENT UPGRADED Softball
WHAT'S NEW? Softball has been an Olympic sport for only 12 years, starting with the 1996 Atlanta games. And while Team USA has won all three prior competitions, in Beijing they face stiff competition from Australia and China. Traditionally, softball bats have been made from metal composites, but this year expect to see plenty of Mizuno's latest carbon-fiber offerings. The Frenzy 120 RB500 was introduced earlier this year, and uses a new four-way materials axis technology called AX4 to provide a much larger sweet spot.
DOES IT WORK? Having a larger sweet spot with greater driving power could mean the difference between a home run and an out. While we may have lost the ping of those old aluminum bats, that sweet music at the medal ceremony would more than make up for it.

9. Nike Aerographics Jersey
EVENT UPGRADED Basketball
WHAT'S NEW? Even since the rules were changed to allow a "dream team" of NBA stars, it was assumed they might as well just hand out the gold medals to Team USA. So it was a bit of an embarrassment when they only managed to come home with bronze from Athens. Clearly, Team USA understands that they need to take things a little more seriously, and they are not taking anything for granted in Beijing.
A basketball jersey hardly seems like an area for technical innovation, but Nike have delivered something called Aerographics for Team USA. By etching graphic designs into key areas of the garment, they can increase airflow over the skin, while reducing the overall weight by 31 percent. Oh, and the graphics look pretty cool, too.
DOES IT WORK? By increasing airflow and reducing sweating, the Aerographics stop the athlete from wasting energy trying to keep cool. Reducing the weight should also allow them to jump just that teeny bit higher.

10. Adidas Lone Star Shoes
EVENT UPGRADED Running
 WHAT'S NEW? NASCAR racing cars are set up to make left turns more easily, because on most circuits that's all they do. So why not do the same for track runners? Working for two years with 400 Meter specialist Jeremy Wariner, Adidas has developed the Lone Star running spike. Track races are generally won or lost in the bends, so by analyzing Jeremy's technique using video and pressure mapping in its lab, Adidas was able to determine that the left foot is used primarily for stabilization, while the right foot delivers more of the power. From that information they were able to develop an asymmetric pair of spikes tailored to the strengths of each foot.
DOES IT WORK? By making his feet more stable through the bends, Jeremy should be able to apply more energy towards moving faster, rather than trying to stay in his lane.

Sunday, 5 February 2012

The UDRS Debate

Umpire Decision Review System

The Umpire Decision Review System (abbreviated as UDRS or DRS) is a technology based system currently being used  in the sport of cricket. The system was first introduced in Test Cricket for the sole purpose of reviewing the controversial decisions made by the on-field umpires in the case of a batsman being dismissed or not. The new review system was officially launched by International Cricket Council on 24 November 2009 during the first Test match between New Zealand and Pakistan at the University Oval in Dunedin.It was first used in One Day Internationals in January 2011, during England's tour of Australia.The ICC had made the UDRS mandatory in all international matches but it later decided to end the mandatory use of DRS and now it will be up to both the teams to mutually agree on DRS use. However, the ICC's executive board made it clear that the DRS would still be part of all ICC events and that they support the use of technology and would continue to work on its development.
Components
There are basically three components in UDRS,although now two are used.
  • Hawk-Eye or Eagle Eye or Virtual Eye  :ball-tracking technology..
  • Hot Spot (cricket) :Infra-red imaging system
  • Snickometer : a very sensitive microphone located in one of the stumps, which can pick up the sound when the ball nicks the bat. This technology is only used to give television audiences more information and to show if the ball did or did not actually hit the bat. Unfortunately the umpires does not get the benefit of seeing 'snicko'.
'Hot spot's success rate is found to be 90-95%'. New cameras were used in Border-Gavaskar series in 2011-12 for viewers, which were vastly superior to those that had been part of the DRS in the past.

Uses

The system was first used during a Test match between Pakistan and England at Lord's Cricket Ground, on 21 April 2001, in the TV coverage by Channel 4. Since then it has been an indispensable tool for cricket commentators around the world. It is used primarily by the majority of television networks to track the trajectory of balls in flight, mostly for analyzing leg before wicket decisions. In this case, Hawk-Eye is able to project the likely path of the ball forward, through the batsman's legs, to see if it would have hit the wicket. Currently this information is not used by the umpires to adjudicate on LBW decisions - it is only available to television viewers, although in the future it may be adopted by the third umpire. Currently the central umpire only get to see it once - and they have to make their minds up instantly.

Response
The Decision Review System has generally received positive response from players and coaches since its launch, however there have been some criticisms as well. West Indies legend Joel Garner labelled the system a 'gimmick'. Another West Indian Ramnaresh Sarwan said that he was not a supporter of the experimental referral system. Former umpire Dickie Bird also criticised the system, saying it undermines the authority of on-field umpires. The cricketing board of India, (BCCI) is not in favour of using the system.
Pakistani spinner Saeed Ajmal expressed dissatisfaction over the Decision Review System after semi-final of 2011 Cricket World Cup against India. He said that DRS showed the line of the ball deviating more than it actually did.
The British company HawkEye published an official response on the Sachin Tendulkar review, which proves that the decision reversal was right.

Criticisms

Although Hawkeye is very accurate in measuring the actual path of a ball, when it comes to predicting the future path of the ball, such as in LBW decisions, it is not as clear. If the ball is heading to the pitch, there's no way Hawk-eye can tell if a delivery is going to skid a bit more than normal or hit a crack, bit of grass, or worn patch of the pitch. The predicted path of the ball is based on the avrage and expected pathway.

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Cost Factor
The cost of implementing the UDRS - at $56,000 per match day - is almost the same as 'per diem' fees of two on-field umpires and the third umpire in an international match put together.
And both - umpires and technology - costing in excess of a whopping $100,000 per match day, are still not good enough to ensure fool-proof decision making. Neither human eye nor technology, despite the money being spent, guarantee complete accuracy.
Just like how an on-field umpire has to depend on the television umpire for many decisions, the UDRS has to depend on Hot-Spot and Snickometer. Unfortunately, the International Cricket Council (ICC) - despite debating the issue for close to two years now - has still not been able to make any firm decision on the issue.