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  • we've got some bad news.

  • You could be burning fewer calories at the gym than you think.

  • In a study published in 2018 researchers found that some ellipticals overestimate calories burned by as much as 130 calories for 30 minutes of exercise.

  • Now, to put that in perspective, if you ate an extra 130 calories of food each day, you'd put on more than a pound each month or 13 £5 a year.

  • And as it turns out, ellipticals aren't the Onley machines with imprecise calorie counters.

  • Well, when you talk about the calculations, here they are way off s Oh, they are so much off You can't really use the information, meaning that it can be more than 50% off.

  • Now, for some, counting calories isn't the point.

  • They're in it for the other benefits exercise offers.

  • But for the nearly 50% of Americans who have at some point tried to lose weight, it really does matter.

  • And that's because people might eat more when they think they're burning more calories.

  • The participants in the group that had fitness trackers, Fitbit monitors they actually didn't lose as much weight as the people that didn't have anything on one recent.

  • It all might be that they were over estimated in terms of energy expenditures, so they allowed themselves to eat more and therefore didn't lose.

  • Lose as much weight.

  • Now the formula for losing weight may look simple.

  • Burn more calories than you consume, but actually measuring calories isn't at least on your typical exercise machine.

  • The reason it's so difficult to get the calorie counts correct is that you're not really measuring the calorie counts.

  • So to do that you need thio.

  • Measure all the cells in your body and how much energy they are using, and obviously you're not going to do that.

  • So instead, you try to do some other proxies for that so you might measure the distance you're traveling or you might measure your heart rate.

  • Do you might measuring something else?

  • Three.

  • The power output on the elliptical, for example, according to Mattson, it largely comes down to how well each machine calculates that power output, which is a relatively reliable proxy for calories and the more complex and machinists.

  • So Stairmaster, in a elliptical, is more complex than a bike.

  • The less accurate the power output will be.

  • For one study, researchers compared calorie readouts for ellipticals, stair climbers, stationary bikes and treadmills.

  • The calorie count on ellipticals was off by 42% while the other equipment had a noticeable but smaller margin of error.

  • Now, entering your weight before working out is a simple way to increase the accuracy.

  • And that's because different bodies burn calories at different rates, even if they're doing the same activity.

  • But even if you do, there's still plenty of room for error.

  • For example, the machine might not be well calibrated.

  • The power output needs to be calibrated, probably way more often than most of the normal gyms are doing it.

  • Today s.

  • So if you're running on a treadmill, if that treadmill is saying that you're doing six kilometers when you actually ran five, then obviously the calorie count will be off.

  • And what about using heart rate monitors?

  • Are those any better?

  • Not really.

  • In a study published in 2017 Mattson tested the calorie counters of several risk born monitors.

  • The most accurate one was off by an average of 27% and the least accurate.

  • It was off by a whopping 93% which can translate to hundreds of calories.

  • And those heart rate monitors built into exercise machines at the gym might be even worse, he says.

  • Now, that's not to say you should ignore calorie counters altogether.

  • They can be helpful for measuring your progress if you stick to the same machine at the gym.

  • But unless you're writing a well calibrated stationary bike, the truth is you're unlikely to get an accurate count.

we've got some bad news.

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B2 calorie output measuring calibrated weight heart rate

How Calorie Counters Actually Work

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    林宜悉 posted on 2020/10/25
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