Chen Joanna Y, Piers Amani D, Lesser Elin L, Lowe Michael R
Department of Psychology, Drexel University, 3141 Chestnut Street, Suite 119, Philadelphia, PA, 19104, USA.
Department of Psychology, Drexel University, 3141 Chestnut Street, Suite 119, Philadelphia, PA, 19104, USA.
Appetite. 2022 Jul 1;174:106017. doi: 10.1016/j.appet.2022.106017. Epub 2022 Apr 1.
Weight suppression (WS) has been consistently related to eating pathology. The weight loss that produces weight suppression has always been assumed to be intentional, but no study has tested whether unintentional weight loss would also be associated with eating pathology. The current study examined whether the association between WS and eating pathology may be moderated by intentionality of weight loss in a community-based sample of 520 adults. Participants were categorized into low WS (<5% weight loss from highest past weight), intentional, high WS (>5% intentional weight loss), and unintentional, high WS (>5% unintentional weight loss) groups. The intentional WS group reported greater restraint than the unintentional WS and low WS groups, and the low WS group reported greater restraint and more frequent loss-of-control (LOC) eating than those with unintentional WS. Further, WS was positively related to loss-of-control eating frequency only in the intentional WS group, and negatively associated with LOC eating frequency in the low WS group. Additionally, BMI was positively associated with LOC and binge eating frequency and restraint only in the low WS group. Given the relatively high prevalence of substantial but unintended weight loss found in this study, researchers studying weight suppression should consider asking about intentionality of weight loss and analyzing their data with and without unintentional weight suppressors included in the sample.
体重抑制（WS）一直与饮食病理学相关。导致体重抑制的体重减轻一直被认为是有意的，但尚无研究测试非故意的体重减轻是否也与饮食病理学有关。本研究在一个由520名成年人组成的社区样本中，检验了体重抑制与饮食病理学之间的关联是否会因体重减轻的意向性而受到调节。参与者被分为低体重抑制组（体重较过去最高体重减轻<5%）、有意高体重抑制组（有意体重减轻>5%）和非有意高体重抑制组（非有意体重减轻>5%）。有意体重抑制组比非有意体重抑制组和低体重抑制组报告了更强的饮食克制，低体重抑制组比非有意体重抑制组报告了更强的饮食克制和更频繁的失控性（LOC）进食。此外，体重抑制仅在有意体重抑制组中与失控性进食频率呈正相关，而在低体重抑制组中与LOC进食频率呈负相关。此外，体重指数仅在低体重抑制组中与LOC、暴饮暴食频率和饮食克制呈正相关。鉴于本研究中发现的大量但非故意体重减轻的相对较高患病率，研究体重抑制的研究人员应考虑询问体重减轻的意向性，并在样本中纳入和不纳入非故意体重抑制者的情况下分析他们的数据。
