Occup Environ Med:长时间高负荷工作可能影响女性的受孕能力

2015-08-18 sunshine 译 MedSci原创

据来自哈佛大学陈曾熙公共卫生学院的一项研究表明,长时间、高负荷的工作可影响女性的怀孕能力,该研究发表于Occupational & Environmental Medicine。


据来自哈佛大学陈曾熙公共卫生学院的一项研究表明,长时间、高负荷的工作可影响女性的怀孕能力,该研究发表于Occupational & Environmental Medicine

Dr. Audrey J. Gaskins及其同事分析了来自2010-2014年参加护士健康调查研究的1739名女性的数据,平均年龄为33岁,其中44%的女性超重或肥胖,22%的女性为吸烟者(或存在吸烟史)。

参加调查的女性均处于备孕期,基线时期,所有研究对象完成包含详细的工作时间表以及体力劳动的调查问卷。研究人员每六个月评估一次参与者以确定其成功受孕所需要的时间。

调查显示大多数女性为白班或夜班,仅16%的女性为白班夜班轮休,30%以上的女性每日工作8小时以上,40%的女性每日抬重物至少5次。

每周工作时间超过40小时可延长20%的成功受孕时间

研究显示,随访12个月后,研究人员发现,16%的女性怀孕失败;随访2年后,5%的女性怀孕失败。与每周仅工作21-40小时的女性相比,每周工作超过40小时的女性成功受孕所需时间要长20%。

此外,研究人员发现,与不搬举重物的女性相比,每天至少搬动15次25磅以上重物的女性成功受孕所需时间要长50%。考虑到不规则的月经周期是影响怀孕的一个因素,研究人员发现,即使是规律的搬举重物的女性,其怀孕时间也较不搬举重物的女性长33%左右。

对于超重或肥胖的女性,长时间、高负荷的工作对其成功受孕的时间的影响更为明显。

研究并未发现轮值夜班的次数与成功受孕时间之间具有关联,也未发现轮班与不轮班与成功受孕时间之间具有关联。

Dr. Gaskins对此研究进行评论:

“我们的研究表明,高负荷的工作以及长时间的工作都可影响女性护士的受孕能力。但是其具体的机制目前尚未可知。虽然我们尝试控制可解释此相关现象的多个变量,如月经周期规律、睡眠时间及其他潜在的有害的生活方式和工作风险,但是这些因素中没有一个能完全解释这个现象。”

“但是在我们的研究中仍缺乏研究了一些因素,如性行为的频率,工作压力及疲劳,”Dr. Gaskins补充道,“因此,我们很难确定这些关系是由于暴露于其他相关的生活方式或其他生物学因素(如昼夜节律失调)所致。”

俄亥俄州立大学的生殖健康专家Courtney Lynch说道,该研究结果可能仅是由于搬举重物引起身体疲劳导致性行为减少的原因。

此外,由于此研究仅包括了女性护士,因此并不能将研究结果应用于所有女性。

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    2015-12-17 cmn

    搬举重物。。。

    0

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    2016-07-23 楚秀娟
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    2015-08-20 zhaojie88
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    2015-08-20 july_979
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