一项以智能手机为媒介的食物注意力再训练程序在超重或肥胖青少年女性中进行的先导随机对照试验。
A Pilot Randomized Control Trial Testing a Smartphone-Delivered Food Attention Retraining Program in Adolescent Girls with Overweight or Obesity.
机构信息
Section on Growth and Obesity, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), 10 Center Drive, Room 1-3330, Bethesda, MD 20892, USA.
Department of Medical and Clinical Psychology, Uniformed Services University of the Health Sciences (USUHS), 4301 Jones Bridge Road, Bethesda, MD 20814, USA.
出版信息
Nutrients. 2024 Oct 12;16(20):3456. doi: 10.3390/nu16203456.
BACKGROUND/OBJECTIVES: Attention bias (AB) toward food is associated with obesity, but it is unclear if programs designed to reduce AB can impact adolescents' eating behavior. We investigated whether a two-week, smartphone-delivered attention retraining (AR) program (vs a control program) altered food AB in adolescent girls with overweight.
METHODS
Participants completed three food-cue visual-probe trainings/day. The AR and control programs directed attention away from food stimuli during 100% and 50% of trainings, respectively. Before and after completion of the programs, girls completed a food-cue visual-probe task while undergoing magnetoencephalography (MEG), and then a laboratory test meal.
RESULTS
Sixty-eight adolescents were randomized; 58 completed post-program visits. There was minimal effect of condition on AB scores (β [95%CI] = -1.9 [-20.8, 16.9]; = -0.06). There was a small effect of condition on energy intake (EMM = 1017 kcal, EMM = 1088 kcal, = 0.29). Within the AR group, there was slightly blunted initial engagement in brain areas associated with reward response and subsequent increased goal-directed attention and action control.
CONCLUSIONS
We found preliminary support for efficacy of an intensive smartphone-delivered AR program to alter neural correlates of attention processing in adolescent girls with overweight or obesity. Studies with larger sample sizes are needed to elucidate if AR trainings disrupt the link between food AB and eating behavior.
背景/目的：对食物的注意力偏差（AB）与肥胖有关，但目前尚不清楚旨在减少 AB 的计划是否会影响青少年的饮食行为。我们调查了为期两周、智能手机提供的注意力再训练（AR）计划（与对照计划相比）是否改变了超重青少年的食物 AB。
方法
参与者每天完成三次食物线索视觉探测训练。AR 和对照程序分别在 100%和 50%的训练中引导注意力远离食物刺激。在完成计划前后，女孩们在进行脑磁图（MEG）的同时完成了食物线索视觉探测任务，然后进行了实验室测试餐。
结果
共有 68 名青少年被随机分配；58 名完成了项目后的访问。条件对 AB 评分的影响很小（β[95%CI]=-1.9[-20.8, 16.9]； = -0.06）。条件对能量摄入的影响很小（EMM=1017 千卡，EMM=1088 千卡， = 0.29）。在 AR 组中，与奖励反应相关的大脑区域的初始参与度略有减弱，随后目标导向的注意力和行动控制能力增强。
结论
我们初步发现了一种密集型智能手机提供的 AR 计划改变超重或肥胖青少年注意力处理神经相关性的有效性的初步支持。需要更大样本量的研究来阐明 AR 训练是否会破坏食物 AB 与饮食行为之间的联系。
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