Does repeatedly viewing overweight versus underweight images change perception of and satisfaction with own body size?
Does repeatedly viewing overweight versus underweight images change perception of and satisfaction with own body size?
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DOI：
10.1098/rsos.190704
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发表时间：
2020-04-01
影响因子：
3.5
通讯作者：
Harmer, Catherine J.
中科院分区：
文献类型：
--
作者：
Bould, Helen;Noonan, Katharine;Harmer, Catherine J.
对身体不满意与随后的饮食失调和体重增加有关。一次性接触不同尺寸的身体会改变对他人身体的感知，以及对自己体型的感知和满意度。反复接触不同大小的人体所产生的影响尚未得到评估。我们将女性随机分为三组，她们每天花5分钟完成一项任务，持续一周，每天两次，使用修改后的女性图像，这些图像要么超重，要么超重，要么既不超重也不体重过轻。我们测试了他们对自己和他人体型的看法，以及对自己体型的满意度。比较各组随访时的测量值，并根据基线测量值进行调整。在93名18-30岁的女性中，与体重过轻的女性接触后，其他女性的图像被认为更大（反之亦然）（p < 0.001）。没有证据表明我们的主要结果测量（视觉模拟量表自身尺寸）或对自身尺寸的满意度有差异。与体重过轻的女性接触后，虚拟形象构建的理想身材（p = 0.03）和虚拟形象构建的自我体型感知（p = 0.007）都有所下降，这可能是由于适应影响了虚拟形象的感知方式。反复接触不同大小的身体会改变对他人身体大小的感知，但我们没有发现证据表明它会改变对自己身体大小的感知。
Body dissatisfaction is associated with subsequent eating disorders and weight gain. One-off exposure to bodies of different sizes changes perception of others' bodies, and perception of and satisfaction with own body size. The effect of repeated exposure to bodies of different sizes has not been assessed. We randomized women into three groups, and they spent 5 min twice a day for a week completing a one-back task using images of women modified to appear either under, over, or neither over- nor underweight. We tested the effects on their perception of their own and others' body size, and satisfaction with own size. Measures at follow-up were compared between groups, adjusted for baseline measurements. In 93 women aged 18-30 years, images of other women were perceived as larger following exposure to underweight women (and vice versa) (p < 0.001). There was no evidence for a difference in our primary outcome measure (visual analogue scale own size) or in satisfaction with own size. Avatar-constructed ideal (p = 0.03) and avatar-constructed perceived own body size (p = 0.007) both decreased following exposure to underweight women, possibly due to adaptation affecting how the avatar was perceived. Repeated exposure to different sized bodies changes perception of the size of others' bodies, but we did not find evidence that it changes perceived own size.