Demos Kathryn E, McCaffery Jeanne M, Cournoyer Sara A, Wunsch Caroline A, Wing Rena R
Weight Control and Diabetes Research Center, Department of Psychiatry & Human Behavior, The Miriam Hospital and Warren Alpert Medical School of Brown University, USA.
J Obes Weight Loss Ther. 2013 Aug 28;3. doi: 10.4172/2165-7904.1000187.
Individuals who have successfully lost and maintained weight have slower reaction times on food-related Stroop tasks, indicating greater cognitive interference to food stimuli compared to obese and normal weight individuals. It remains unclear whether this interference is a preexisting characteristic of weight loss maintainers or if food-interference changes in obese individuals as they lose weight.
To examine potential changes in food-related interference, a food-Stroop paradigm was used to measure responses to food versus non-food words in 13 obese women before and after a 12-week behavioral weight loss program.
Participants achieved a mean weight loss of 5.12 kg through the behavioral weight loss program. Their reaction time to food words became significantly slower (p<0.001) and they made significantly more errors (p<0.01) following treatment.
These findings suggest that through behavioral weight loss treatment obese individuals experience increased interference toward food words, which may reflect increased salience of food-related cues. Future research is needed to determine whether increases in interference are related to better weight loss and maintenance.
成功减重并维持体重的个体在与食物相关的斯特鲁普任务中反应时间较慢，这表明与肥胖个体和正常体重个体相比，他们对食物刺激的认知干扰更大。目前尚不清楚这种干扰是体重减轻维持者预先存在的特征，还是肥胖个体在减肥过程中食物干扰会发生变化。
为了研究与食物相关的干扰的潜在变化，采用食物斯特鲁普范式在13名肥胖女性参加为期12周的行为减肥计划前后测量她们对食物和非食物词汇的反应。
通过行为减肥计划，参与者平均减重5.12千克。治疗后，她们对食物词汇的反应时间显著变慢（p<0.001），并且犯的错误显著增多（p<0.01）。
这些发现表明，通过行为减肥治疗，肥胖个体对食物词汇的干扰增加，这可能反映出与食物相关线索的显著性增加。需要进一步的研究来确定干扰的增加是否与更好的体重减轻和维持有关。
