Doing more housework keeps stress levels higher at the end of the day for both married women and men , increases health risk ,the US researchers suggest .

美国研究人员发现，已婚男女下班后，家务做得越多，压力就越高，健康风险也由此增加。

Researchers Darby Saxbe and Rena Graesch of the University of California and colleagues tracked 30 dual-earner couples around their homes for three days , using video cameras , interviews and surveys . They required the study participants to provide four saliva samples every day to measure the stress hormone cortisol , which is usually high in the morning—and during stressful situations – and tends to recover later in the day .

加利福尼亚大学研究员黛比.萨克斯比、热那.格莱斯奇和同事一起用三天时间通过摄像机、采访以及问卷调查了30对双收入家庭。被调查者需每日提供四份唾液样本以检测他们的压力激素皮质。该激素皮质水平在早晨和在压力较大的情况下较高，然后会在一天内其他时间回落。

Saxbe says a steeper drop in the hormone is considered healthy . Cortisol levels can affect sleep , weight gain , burnout and weakened immune resistance .

萨克斯比称如若该激素皮质水平在早晨以后的时间内迅速下降，便可断定其主人是健康的。皮质水平可影响睡眠，体重的增长、倦怠及弱化了的免疫力。

On average , wives spent more of their time at home doing housework , followed by communication and leisure ,while husbands had more leisure time , followed by communication and housework .

一般而言，妻子会花更多的时间做家务，随后进行社交或休闲活动，而丈夫有更多的休闲时间，其次是社交活动和家务劳动。

The study , published in the Journal of Family Psychology , found both wives and husbands who devoted more time to housework had higher levels of evening cortisol and weaker afternoon-to-evening recovery .

这份刊载于《家庭心理学》的研究发现，无论是妻子还是丈夫，只要花更多时间做家务，他们的皮质水平在晚间便会升高，下午到晚上精力恢复得也较慢。

However , husbands who apportioned more time to leisure , and whose wives apportioned less time to leisure , showed stronger after-work recovery , the study says .

然而，该研究还称，那些自己休闲时间较多而妻子休闲时间较少的丈夫们，在工作后恢复得更快。

The findings suggest how the division of labor within couples is structured can implicate health , the researchers say .

研究人员称这些发现揭示出，夫妻间劳动分工模式可影响健康。