Moore Halim, White Melanie J, Finlayson Graham, King Neil
Queensland University of Technology, School of Exercise and Nutrition Sciences, Brisbane, Queensland, Australia.
Queensland University of Technology, School of Psychology and Counselling, Brisbane, Queensland, Australia.
Br J Health Psychol. 2024 Feb;29(1):165-184. doi: 10.1111/bjhp.12693. Epub 2023 Sep 13.
Food-specific response inhibition training has been implemented as a strategy to modify food choices and reward-related eating behaviours, but short-term studies have produced equivocal findings.
To longitudinally assess the effect of a smartphone-based response inhibition intervention on food reward, hedonic eating drive, and cravings in a free-living setting.
84 adults (M = 30.49, SD = 13.01, 52 female) with high responsivity to food cues or overweight/obesity were randomly assigned to a response inhibition training intervention (n = 45) or a control game (n = 39) at home during a training week, followed by a week with no training. Primary analyses compared groups on measures of explicit liking and implicit wanting for food of different energy densities, food cravings, and reward-related eating throughout this two-week period.
A reduction was observed in explicit liking and implicit wanting for energy-dense foods from baseline to post-training independent of condition (ps < .001). These changes from baseline were sustained after a 1-week latency period, also independent of condition (ps < .001). These effects coincided with similar observations of hedonic eating drive, tonic cravings, and control over cravings during the observation period (ps < .01).
Although significant reductions in reward-related appetite were observed, free-living response inhibition training did not offer additional benefit over a control activity. Future intervention studies with observable food intake are needed to investigate which appetitive mechanisms most reliably predict eating behaviour over time.
Retrospectively registered with ANZCTR [ACTRN12622001502729].
特定食物反应抑制训练已被作为一种改变食物选择和与奖励相关的饮食行为的策略来实施，但短期研究结果并不明确。
纵向评估基于智能手机的反应抑制干预对自由生活环境中食物奖励、享乐性进食驱动力和渴望的影响。
84名对食物线索反应高或超重/肥胖的成年人（平均年龄M = 30.49，标准差SD = 13.01，52名女性）在训练周期间被随机分配到在家进行的反应抑制训练干预组（n = 45）或控制游戏组（n = 39），随后是一周无训练期。主要分析在这两周期间比较两组在对不同能量密度食物的明确喜好和隐性欲望、食物渴望以及与奖励相关的进食方面的测量指标。
从基线到训练后，无论条件如何，对能量密集型食物的明确喜好和隐性欲望均有所降低（p值<0.001）。从基线开始的这些变化在1周的潜伏期后得以维持，同样与条件无关（p值<0.001）。这些效应与观察期内享乐性进食驱动力、持续性渴望以及对渴望的控制方面的类似观察结果一致（p值<0.01）。
尽管观察到与奖励相关的食欲显著降低，但自由生活反应抑制训练相比对照活动并未提供额外益处。未来需要进行可观察食物摄入量的干预研究，以调查哪些食欲机制能最可靠地预测长期的饮食行为。
追溯注册于澳大利亚和新西兰临床试验注册中心[ACTRN12622001502729]
