Eating behaviors最新文献

The benefit of food-specific inhibition training on modulating food valuation and eating behaviors has been established, but generalization to untrained foods is seldomly examined. This study investigated whether stimulus variability and practice order, found to effect generalization in motor learning, can improve generalization following food-specific inhibition training. Ninety-three young adults practiced the Go/No-Go task online in three training conditions: 1) Constant (N = 30): inhibition practiced on one food stimulus; 2) Variable-Blocked (N = 32): inhibition practiced on 6 food stimuli, each in a separate block; and 3) Variable-Random (N = 31): inhibition practiced on 6 food stimuli in random order. Consistent with our hypothesis, the Variable-Random group showed better generalization of inhibition to untrained foods than the Constant and the Variable-Blocked groups immediately after training, demonstrating the benefit of stimulus variability and random practice order. This effect was not present 24 h after training. The Variable-Random group also showed decreased desire to eat untrained foods, exhibiting generalization of food devaluation. However, this effect was only present 24 h after training. The Constant group showed increased desire to eat untrained foods immediately and 24 h after training. The Variable-Blocked group did not differ from either group in the desire to eat to untrained foods, suggesting that random order is important for exposing the benefit of variability. The findings illustrate that presenting various training items in random order can improve generalization of food-specific inhibition training. However, inconsistencies found in the timing of generalization effects and modest effect sizes warrant additional investigation into generalization principles of food-specific inhibition training.

Background

Picky eating (PE) is common in early childhood, peaking between ages 1 and 5 years. However, PE may persist beyond this normative period and pose threats to health and psychosocial functioning. Avoidant/restrictive food intake disorder (ARFID) involves restrictive eating driven by appetite, preference/selectivity, and/or fear of eating, leading to significant medical and/or psychosocial impairment. This retrospective study examined the relation between early childhood PE onset/duration and ARFID eating restrictions and symptoms.

Method

Parents of children ages 6–17 (N = 437) completed a survey about their child's eating behavior, including the Nine-item ARFID Screen (NIAS) and questions about PE onset and impacts. Children were then categorized into groups based on PE onset (before or after age 5) and duration: never picky, normative picky, persistent picky, and late-onset picky.

Results

The groups differed (all p < .05) in mean NIAS subscales (picky eating, NIAS-PE; appetite, NIAS-A; fear, NIAS-F) and total scores (NIAS-T). Tukey post-hoc tests found that persistent PEs had significantly higher NIAS-PE, NIAS-A, and NIAS-T scores than never or normative PEs (all p < .05). Chi-Square tests found that persistent PEs were significantly more likely than all other groups to endorse ARFID criteria.

Conclusion

Findings from this study suggest that PE that persists beyond or is identified after the normative period is associated with elevated ARFID symptoms compared to normative and never PEs. Persistent PE increases risk of impairment from PE and other ARFID eating restrictions. Given the health and psychosocial risks associated with ARFID, early identification and intervention for this group is warranted.

Previous research identified four patterns of negative emotional eating in American and Chinese university students and proposed future directions (e.g., exploring potential differences in emotion regulation across patterns and replicating the patterns in a general, non-student population). Furthermore, prior research has not explored group differences in muscularity-oriented eating disorder symptomatology or psychosocial impairment. Therefore, the present study addressed these gaps in a sample of general Chinese adults, further testing group differences in typical and muscularity-oriented eating disorder symptomatology, psychosocial impairment, and emotion regulation difficulties across patterns of negative emotional eating. A total of 600 Chinese adults were recruited. Latent class analysis (LCA) was used. Results replicated the four patterns of negative emotional eating in previous research, including non-emotional eating (non-EE), emotional over- and under-eating (EOE-EUE), emotional over-eating (EOE), and emotional under-eating (EUE). Significant class differences were identified in eating disorder symptomatology, psychosocial impairment, and emotion regulation difficulties. Specifically, individuals with EOE and EOE-EUE patterns exhibited higher eating disorder symptomatology, higher psychosocial impairment, and more emotion regulation difficulties than those with non-EE and EUE patterns. Therefore, these two classes (i.e., EOE and EOE-EUE), especially the poorly researched EOE-EUE group, should be further examined to elucidate research and clinical applications. Furthermore, findings underscore the role of emotion regulation difficulties in further describing the differences across these negative emotional eating patterns, which can be considered in future interventions for reducing negative emotional eating.

Objective

This study aimed to fill a gap in the literature regarding the role of resilience in the relationship between symptoms of Attention-Deficit/Hyperactivity Disorder (ADHD) and loss of control (LOC) eating in a nonclinical sample of emerging adults. Resilience was examined as a potential moderator and as a potential mediator of ADHD symptoms and engagement in LOC eating behaviors. Improved understanding of this relationship may inform clinical intervention and risk screening methodologies for disordered eating behaviors in college students.

Methods

Participants were undergraduate students (N = 386) from a private university in the northeastern United States. Linear regression analysis examined whether greater ADHD symptoms related to greater LOC eating. Pathway analyses examined resilience as either a moderator or mediator of the relationship between ADHD symptoms and LOC eating.

Results

A direct positive relationship was found between ADHD symptoms and LOC eating (p < .05). Resilience partially mediated this relationship, such that increased ADHD symptoms indirectly related to increased LOC eating through low resilience (p < .05).

Conclusion

Findings indicate that undergraduate students with greater ADHD symptoms engaged in more frequent LOC eating, and that low resilience was a partial mediator of this positive relationship.

Objective

To examine rates and predictors of attrition from referral through to treatment completion in an outpatient public psychology service's eating disorder program in Perth, Western Australia.

Method

The proportion (number) of clients (N = 671; mean age = 23.8 years) transitioning between stages of pre-treatment and treatment was identified. Associations between demographic, treatment and clinical variables and attrition were investigated using logistic regression.

Results

Only 34% (n = 230) of referred patients started treatment and 16% (n = 107) completed treatment. Referral acceptance was correlated with provisional diagnoses that meet the service's inclusion criteria, and attendance at an initial assessment was correlated with younger age. Treatment commencement was correlated with the presence of a co-occurring depressive or anxiety disorder, and no previous suicide attempts. Completing a full course of treatment was correlated with no previous hospitalisation for psychiatric issues, no previous suicide attempts, a history of psychiatric medication use, and treatment with family-based therapy.

Discussion

High rates of attrition were found from referral to treatment completion. A suggested framework for defining the different stages of attrition is proposed to allow for consistency of attrition reporting across the mental health field. Future studies are needed to identify why clients disengage following referral, assessment, and treatment commencement, to inform strategies to engage and sustain engagement and to optimise outcomes.

Dancers are at heightened risk for eating disorders (EDs) and have job and training demands that obscure ED assessment and likely impede treatment. Two behavioral manifestations of ED psychopathology that may present uniquely in a dance environment are body checking and body avoidance. The current study sought to provide a foundational understanding of the phenomenology of body checking and avoidance among dancers by assessing the reliability (i.e., internal consistency) of existing body checking and avoidance measures and the relationships, or convergent validity, between measures of body checking and avoidance and measures of related constructs. Eighty professional and pre-professional (i.e., conservatory level) dancers (78.8 % female) from seven dance genres completed self-report measures of body checking and avoidance, ED pathology, clinical perfectionism, depression, and anxiety. Across the dancer sample, body checking and avoidance measures demonstrated adequate internal consistency. More frequent body checking and body avoidance was strongly related to higher levels of ED pathology. There were moderate to strong correlations between body checking and body avoidance and clinical perfectionism, depression, and anxiety such that higher body checking and body avoidance was related to higher clinical perfectionism, depression, and anxiety. Exploratory analyses found no significant differences between ballet dancers and dancers of other dance genres; professional dancers scored in the normative range on measures of body checking and body avoidance. Dancers' qualitative descriptions of body checking and avoidance revealed behaviors not included in existing questionnaires, such as unique mirror use behaviors, technology-assisted body checking, and the checking and avoidance of body parts relevant to the dance-specific body ideal. Results support the inclusion of body checking and avoidance interventions in ED treatments for dancers (particularly pre-professional dancers) and emphasize the need for dancer-specific ED assessment methods.

The Weight-Related Eating Questionnaire (WREQ), designed for assessing distinct constructs of dietary restraint and disinhibition-related eating behaviors, has not been validated in pregnancy. This secondary data analysis aimed to evaluate the WREQ's psychometrics in a diverse sample of pregnant women from the eMoms randomized controlled trial (N = 1399), randomly split for exploratory (EFA, n = 691) and confirmatory factor analysis (CFA, n = 708). Cronbach's alpha and corrected item-total correlation was used to examine internal consistency reliability. Sequential multiple regression analyses were used to assess criterion validity. EFA revealed three factors – dietary restraint, susceptibility to external cues, and emotional eating – accounting for 65.6 % of total variances. Parallel analysis confirmed a combination of two restraint subtypes (routine restraint and compensatory restraint). CFA showed that item 3 for assessing routine restraint had the lowest squared multiple correlation (0.22). The overall Cronbach's alpha of 0.87 demonstrated good internal consistency. Dietary restraint was negatively associated with the intake of energy (p = .03) and carbohydrates (p = .02), whereas susceptibility to external cues was positively associated with the intake of energy (p < .001), carbohydrates (p < .001), and total fat (p = .003). Additionally, emotional eating was positively associated with early-pregnancy body mass index (BMI) after adjustment for covariates (p < .001). These findings confirmed the reliability of the WREQ, the construct validity for susceptibility to external cues and emotional eating, and demonstrated its criterion validity regarding nutritional intake in pregnant women.

This study aimed to describe the frequency of dieting practices among adolescents and young adults in Canada, as well as determine the association between dieting and eating disorder attitudes and behaviors. Data from 2762 Canadian adolescents and young adults from the Canadian Study of Adolescent Health Behaviors were analyzed. Frequencies were used to determine the prevalence of 11 different diets among the sample, and chi-square tests were used to assess gender differences. Multiple modified Poisson and linear regression analyses were conducted to determine the associations between any dieting and eating disorder attitudes and behaviors. Among the sample, 15.7 % of girls and women, 10.4 % of boys and men, and 13.0 % of transgender/gender expansive (TGE) participants reported any dieting in the past 12 months, with the Ketogenic diet being most common among all genders. Results from regression analyses showed that engaging in any dieting in the past 12 months was associated with greater eating disorder psychopathology among girls, women, boys, and men, but not TGE participants. There were varying trends in association between specific types of dieting practices and eating disorder behaviors among girls, women, boys, and men. Dieting is relatively common among a national sample of Canadian adolescents and young adults, and engagement is associated with greater eating disorder psychopathology and behaviors. Healthcare and public health professionals should consider screening for eating disorders among adolescents and young adults who report engaging in dieting practices.

Introduction

Disordered eating behaviors are a current public health concern since their progression can lead to the development of a full criteria eating disorder. Sensitization to repeated intake of high energy density (HED) foods is associated with excess weight gain over time, but less is known about relationships with assessments of disordered eating. Thus, this study aims to understand how disordered eating behaviors refunlate to the influence of the food environment and sensitization.

Method

163 adolescents – 50 % female and 13.2 mean age – were followed for 24 months. Sensitization was assessed by comparing the relative reinforcing value (RRV) of HED food at baseline and after two weeks of daily intake; sensitization was defined as RRV of food after repeated intake. Study participants also completed the EDE-Q, and Power of Food Scale (PFS). We conducted multivariate general linear models to examine these associations.

Results

Sensitization status and PFS scores at baseline were positively associated with EDE-Q subscale scores cross-sectionally, but not longitudinally, at baseline and 24 months. We found that sensitization to HED food and higher susceptibility to food cues relates to increased disordered eating behaviors and both at baseline and at 24-months.

Discussion

These findings suggest that sensitization to repeated HED food intake and the food environment might be a risk factor for later engagement in disordered eating behaviors. Future studies should address the temporal relationships among these factors and the role that social norms around body weight and weight stigma may play in the development of these behaviors.

Eating decisions may be influenced by an impact bias, or the tendency to overestimate the intensity and duration of emotions for future events or outcomes. In this study, we tested the impact bias, among college students, for eating a novel health food – kale chips. We also examined how an emotion adaptation recall exercise influenced emotions and eating behavior. After reading about the health benefits of kale, college students (N = 80) reported their anticipated emotions (e.g., how intensely they would experience each emotion) for eating kale chips. Following a control (n = 40) or emotion adaptation (n = 40) writing exercise, they were asked to eat these chips. They then reported their experienced emotions (e.g., how intensely they experienced each emotion) as well as their intentions to eat kale in the future. Findings indicated that participants showed a negative impact bias in which they anticipated more intense negative emotions than they experienced. However, they showed an opposite effect for positive emotions, anticipating lower positive emotion than they experienced. Relative to the control group, those who did an emotion adaptation exercise experienced lower levels of disgust after eating kale chips and reported higher intentions to eat them in the future. Subsequent analyses of consumption revealed that those in the emotion adaptation condition also ate more of the kale chips. Findings suggest that affective forecasting theory may be a useful framework through which to develop and test ideas about emotions and eating in the context of novel health foods.