German broadcaster RTL will pay ￡4m to show the fight,

LONDON -- Wearing a fitness tracker may help you keep tabs on how many steps you take, but the devices themselves -- even with the lure of a cash reward -- probably wont improve your health, according to the biggest study yet done on the trendy technology.Scientists say that although the activity trackers may boost the number of steps people take, it probably isnt enough to help them drop pounds or improve overall health.These are basically measuring devices, said Eric Finkelstein, a professor at Duke-NUS Medical School in Singapore, who led the research. Knowing how active you are doesnt translate into getting people to do more and the novelty of having that information wears off pretty quickly.Finkelstein and colleagues tested the Fitbit Zip tracker in a group of 800 adults in Singapore, by dividing them into four groups. Of those people, more than half were overweight and obese and about one third were active.A control group got information about exercise but no tracker and a second group got the Fitbit Zip; everyone in those groups also got about $2.92 a week. Participants in the last two groups got the tracker and about $11 for every week they logged between 50,000 and 70,000 steps. One of the groups had the money donated to charity while the other kept the cash.After six months, people with the Fitbit and who got the cash payment showed the biggest boost in physical activity. But after a year, 90 percent of participants had abandoned the device. The physical activity of the Fitbit wearers did not decline over the year as much as it did for those who were not given a tracker, but the higher activity level wasnt enough to produce any improvements in weight, oxygen capacity, or blood pressure.These trackers can encourage people to take more steps, but it still seems like these random extra steps arent enough to really improve your health, Finkelstein said. He said whats needed is more active steps, or what would amount to brisk walking or more rigorous exercise.The study was paid for by Singapores ministry of health and published online Tuesday in the journal Lancet Diabetes & Endocrinology.The results seem to reinforce those of another study, published last month in the Journal of the American Medical Association. In that study, conducted over two years, researchers found that adding wearable activity tracking devices to a diet and fitness program didnt result in more weight loss. Those who didnt wear devices lost about five pounds more than those who wore them, but both groups slimmed down and improved their eating habits, fitness and activity levels.Fitbit, in a statement responding to the study Tuesday, said: We are confident in the positive results our millions of users have seen from using Fitbit products. The statement went on to say that it was in the process of improving its trackers.Finkelstein said some of the newer fitness trackers have more advanced features, like prompts to exercise and ways to link to social media, but he still thinks it is unlikely people will radically change their exercise regimes without a more comprehensive approach.Some experts said the results were disappointing but not surprising.We should not be so naive to believe that simply by giving a sleek-looking gadget to someone, they will change deeply-rooted lifestyle habits, said Emmanuel Stamatakis, a physical activity expert at the University of Sydney who was not part of the research.Others said the trackers might be more useful if they were aimed specifically at unhealthy people.People who are active are already motivated so they dont need these devices, said Lars Bo Andersen of Norways Sogn and Fjordane University College.Fitbit shares have fallen by half since the beginning of the year, to just under $15 a share.---Medical Writer Lindsey Tanner contributed to this story from Chicago. 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"We had to dig deep with our fighting spirit and weve done that," United striker Wayne Rooney said. Cheap Bucks Jerseys China . The Lightning are 2-0 so far on a four-game road trip, giving the club five straight wins as the guest and improving Tampas away record this season to 11-8-2. Anthony Joshua will go toe-to-toe with Wladimir Klitschko for the IBF and WBA world heavyweight titles at Wembley Stadium in April. But cutting through the hype, just how big is this fight?Nick Parkinson runs through everything you need to know about the much-anticipated showdown...Wembley sell-out?In terms of attendance, promoter Eddie Hearn hopes to be given permission to set the national stadium out for 90,000.If tickets sell out, as expected, Joshua-Klitschko will match the record of 90,000 set by light-heavyweights Jock McAvoy and Len Harvey at the now demolished White City Stadium, London, in 1939.It also will beat the 80,000 who saw the super-middleweight rematch between Carl Froch and George Groves at Wembley in 2014.Pay-per-view potentialJoshua-Klitschko will not be on free-to-air television in the UK and will be seen by fewer people than Barry McGuigan vs. Eusebio Pedroza (18 million), Nigel Benn vs. Chris Eubank (16m), Benn vs. Gerald McClellan and Eubank vs. Michael Watson (both 13m) in the 1980s and 90s.More recently, British heavyweight David Hayes non-title comeback against little-known Australian Mark De Mori in January attracted 3m viewers on free-to-air channel Dave in the UK.With Joshua-Klitschko set to be shown on pay-per-view television in the UK, it will have to go all out to break the record for a boxing PPV event involving a British boxer (1.2m for Ricky Hatton vs. Floyd Mayweather in 2007).If Joshua-Klitschko does 1.5m buys, as the promoters hope, setting a new British PPV record, it will bring in more than ￡25m and beat Froch vs. Groves II (900,000 buys), Lennox Lewis vs. Mike Tyson (750,000) and FFrank Bruno vs.dddddddddddd Tyson (660,000)Floyd Mayweathers long-awaited fight with Manny Pacquiao in May 2015 got 1.15million pay-per-view buys in the UK.Overseas rights for Joshua-Klitschko will be the biggest ever for a fight in Britain. German broadcaster RTL will pay ￡4m to show the fight, while U.S. broadcasters Showtime and HBO are vying to screen it for more than ￡1m. And then there is the rest of the world rights.Big-money boutJoshua-Klitschko is expected to make the biggest gross revenue for a fight in the UK, perhaps more than ￡40m. Froch-Groves II is the biggest grossing fight ever in Britain after bringing in more than ￡22m. Both Joshua and Klitschko are expected to earn more than Frochs ￡8m purse.If Joshua-Klitschko makes around ￡40m in gross revenue, it will still be way behind the big fights in the U.S. such as Mayweather-Pacquiao (￡318m), Mayweather vs. Saul Alvarez (￡120m) and Lewis-Tyson in 2002 (￡89m).London-boundThe appearance of Klitschko on UK soil follows the visit of Gennady Golovkin -- arguably boxings pound-for-pound No. 1 -- to London in September. The Kazakh defended his world middleweight titles against Briton Kell Brook and was the biggest overseas boxer to fight in the UK for at least a decade.Klitschko, 41 in March, will start as a betting underdog against Joshua and may not hold the same star appeal as he did five years ago when he beat Londoner David Haye in Germany. Klitschko and Joshua are both outside the ESPN pound-for-pound rankings; Golovkin is at No. 2. ' ' '