|
There may be a link between later bedtimes and weight gain, new research suggests. 新研究表明，晚睡与体重增加之间可能存在关联。 Researchers studied 3,342 adolescents starting in 1996, following them through 2009. At three points over the years, all reported their normal bedtimes, as well as information on fast food consumption, exercise and television time. The scientists calculated body mass index at each interview. 从1996年至2009年，3342名青少年接受了研究人员的随访，并分别在这期间的三个时间点上报告了自己平时的就寝时间、看电视时间以及食用快餐和锻炼的情况。在每次访谈时，科学家们均计算了各位参与者的身体质量指数(B.M.I.)。 After controlling for age, sex, race, ethnicity and socioeconomic status, the researchers found that each hour later bedtime during the school or workweek was associated with about a two-point increase in B.M.I. 在对年龄、性别、种族、民族和社会经济地位进行校正后，研究人员发现，在校时或在每周的工作日期间，参与者每晚睡一小时与其B.M.I.约增加2个点相关。 The effect was apparent even among people who got a full eight hours of sleep, and neither TV time nor exercise contributed to the effect. But fast food consumption did. 即使在能睡足8小时的人当中，这种效应依然很明显，且它与看电视时间或锻炼均无关，但与食用快餐有关。 | 
