Researchers found those who spent the most time in front of a screen, an average of two and a half hours a day, had "significantly" higher blood pressure levels than those who spent hardly any.

    Researchers believe that one of the reasons could be that too much "screen time" diverts children away from more active hobbies, such as sports, although they think there are also other factors involved.

    High blood pressure is one of several risk factors that can increase the risk of developing potentially deadly heart conditions.

    The study looked at 111 children aged between three and eight.

    On average the children spent 1.5 hours a day in front of the computer, although some spent considerably more.

    The findings, published in the Archives of Paediatrics & Adolescent Medicine journal, show that those children who spent the least amount of time in front of a screen had significantly lower blood pressure levels than those who spent the most.

    David Martinez-Gomez, from Iowa State University, said: "The results of this study showed that TV viewing and screen time were associated with elevated blood pressure independent of body composition in children.

    "Given that total objective sedentary time was not associated with elevated blood pressure, it appears that other factors, which occur during excessive screen time, should also be considered in the context of sedentary behaviour and elevated blood pressure development in children."

    警惕：導(dǎo)致孩子血壓升高的殺手！

    研究發(fā)現(xiàn)，看電視或電腦時(shí)間長(zhǎng)了容易導(dǎo)致高血壓。一天平均看電視或電腦兩個(gè)半小時(shí)的人比幾乎不看電視電腦的人血藥明顯要高。

    雖然研究人員還有其他原因，但是他們認(rèn)為，原因之一是過(guò)長(zhǎng)時(shí)間地看電視或電腦會(huì)使孩子們遠(yuǎn)離一些積極的興趣，比如運(yùn)動(dòng)。

    高血壓是導(dǎo)致致命的非正常心跳的危險(xiǎn)因素之一。

    此研究調(diào)查了年齡在3到8歲之間的111個(gè)孩子。

    平均來(lái)講，一個(gè)孩子大約每天用電腦的時(shí)間是1.5個(gè)小時(shí)，然而也有更多者。

    刊登在美國(guó)醫(yī)學(xué)協(xié)會(huì)雜志的新一項(xiàng)研究報(bào)告表明看電視或電腦時(shí)間最少的孩子比看電視或電腦時(shí)間最多的孩子的血壓明顯要低。

    愛(ài)荷華州立大學(xué)的David Marti6nez-Gomez說(shuō)："此項(xiàng)研究結(jié)果表明，看電視或電腦的時(shí)間長(zhǎng)短與孩子們的高血壓有關(guān)系。"

    既然客觀的久坐與高血壓并無(wú)關(guān)系，那么在過(guò)久看電視或電腦的時(shí)間里，其他因素應(yīng)該與孩子們的高血壓有關(guān)系。