布莱尔说：“要想将超重或肥胖的健康危害降到最低，就需要更准确的身体活动量数据。”

"If we want to get to the bottom of the health hazards of overweight and obesity, we have to have better data on physical activity," Blair said.

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对缺乏身体活动的儿童和青少年，建议采取渐进的方式增加身体活动量，最终达到上述的推荐量。

For inactive children and youth, a progressive increase in activity to eventually achieve the target shown above is recommended.

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为了增加利用的卡路里，人们可以加大身体活动量，通常每天至少定期活动30分钟，活动强度适中。

And to increase calories used, people can boost their levels of physical activity - to at least 30 minutes of regular, moderate-intensity activity on most days.

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