#研究分享#【可穿戴设备告诉你日行一万步,或许其伤害远超益处】

#研究分享#【可穿戴设备告诉你日行一万步,或许其伤害远超益处】或许你拥有Fitbit等可穿戴设备,这些设备会告诉你每天要走一万步就可以达到目标,但你是否有想过,这一万步的目标是否有科学依据呢?约翰霍普金斯大学的研究人员称,日行一万步最早出现在上世纪60年代的日本,研究发现日本人平均日行一万步可以消耗3000卡路里,但实际上并不适合所有人。最重要的是,如果以一万步作为运动目标,很多人在生理上不能做到,从而造成伤害,而对有些人则远远不够,应该根据个体的实际水平定制目标。

Why fitness apps that advise you to walk 10,000 steps a day could be doing you more harm than good

  • Trying to hit the recommended number of steps could harm the elderly 
  • It came about in 1960 as the average Japanese man walked 10,000 steps
  • But experts say the number might be too easy for people with short legs 

Fitness bands that count the number of steps you do may do more harm than good, a leading computer scientist warned yesterday.

The activity trackers advise that people should rack up 10,000 steps a day.

But a lack of scientific research means that these claims have ‘no evidence base’ and could even be harmful, a leading scientist warned yesterday.

Dr Greg Hager, Professor of Computer Science at Johns Hopkins, told the American Association for the Advancement of Science’s annual meeting that trying to hit 10,000 steps for elderly people may be harmful.

 

Dr Hagar said: ‘Some of you might wear Fitbits or something equivalent, and I bet every now and then it gives you that cool little message ‘you did 10,000 steps today’- but why is 10,000 steps important? What’s big about 10,000?’

He said that the figure came about in Japan in 1960 – and found that an average Japanese man walking 10,000 steps a day burnt around 3,000 calories.

‘Turns out in 1960 in Japan they figured out that the average Japanese man, when he walked 10,000 steps a day burned something like 3,000 calories and that is what they thought the average person should consume so they picked 10,000 steps as a number.

‘But is that the right number for any of you in this room? Who knows. It’s just a number that’s now built into the apps.’

He added: ‘We have an incredible number of apps in the wild basically being downloaded by people who may or may not understand what they are actually telling them or what the context for that is.

‘Until we have evidence based apps you could amplify issues, I mean imagine everyone thinks they have to do 10,000 steps but you are not actually physically capable of doing that, you could actually cause harm or damage by doing so.’

He continued: ‘I think apps could definitely be doing more harm than good. I am sure that these apps are causing problems.

Dr Greg Hager, Professor of Computer Science at Johns Hopkins, told the American Association for the Advancement of Science’s annual meeting that trying to hit 10,000 steps for elderly people may be harmful (file photo)

‘The 10,000 steps example typifies the problem in many ways. We all know that probably the more you exercise, the better it is for you. But if you are elderly or infirm then this is not going to be good for you.’

Around one third of all fitness tracker bands are made by Fitbit.

The UK National Obesity Forum says that a person who walks between 7,000 to 10,000 steps a day qualifies as ‘moderately active’.

But previously experts have warned that the 10,000 number might be too easy for short people and harder for people with long legs. Children are also thought to need more than 10,000 steps a day.

According to the NHS, the average Briton walks between 3,000 and 4,000 steps a day - significantly less than the Fitbit target. Yet many people do significantly more, and for them 10,000 steps might not be much of a target.

A person aged 45 and weighing 70kg (about 11 stone) can burn around 400kcal (1673kJ) by walking 10,000 steps briskly (3-5mph).

Simon Leigh, a senior health economist who has published studies on fitness trackers in the British Medical Journal said yesterday: ‘Dr Hager is spot on. A GP, endocrinologist or other fitness specialist would unlikely recommend 10,000 steps for most people.

The figure came about in Japan in 1960 – and found that an average Japanese man walking 10,000 steps a day burnt around 3,000 calories (file photo)

'Especially given that the majority of those who download these apps are likely to be unfit and in need of improvement in the first place.

'It isn’t sensible to just jump in to a big number. If diabetic (type 1) for example, such a concerted effort in exercising could significantly reduce blood sugar levels for a considerable amount of time post exercise.

‘A ‘personalised’ approach to Fitbits etc. could be accomplished easily enough by modifying the target with reference to either clinical guidance for weight loss and physical activity, or in conjunction with a clinician.

This way they would more accurately have a ‘common sense’ element built in, and helping to increase the chance that they ‘first do no harm’.

Dr John Jakicic of the University of Pittsburgh, whose team last year found that fitness trackers could prevent people losing weight, said: ‘The goal should be based on the scientific evidence.

‘From there the devices and apps should be used as a method to help facilitate monitoring of health-related goals and to facilitate behavior change.

‘So, we need to be careful about relying solely on these devices. However, there is a place for these, and so we need to be careful not to throw the baby out with the bathwater in my opinion.’

Steve Flatt, director of Psychological Therapies Unit in London said: ‘Currently, I would say that the world of apps is in the equivalent stage of the 1860’s wild west – everyone sees a gravy train and are not hesitating to jump on board even if there is little of no evidence of utility, on the basis that there is a vast amount of money to be made.’

链接:http://www.dailymail.co.uk/health/article-4244044/Why-fitness-apps-doing-harm-good.html

来源:thedailymail

作者:COLIN FERNANDEZ


Comments are closed.



无觅相关文章插件