Dietary patterns and intelligence in early and middle childhood

The association between intelligence and diet at 3.5 and 7 years was examined in 591 children of European descent. Approximately half of the children were born small-for-gestational age (birth weight ≤ 10th percentile). The relationship between IQ and diet (measured by food frequency) was investigated using multiple regression analyses. Eating margarine at least daily was associated with significantly lower IQ scores at 3.5 years in the total sample and at 7 years in SGA children. For all children, eating the recommended daily number of breads and cereals was associated with significantly higher IQ scores at 3.5 years, and those who ate fish at least weekly had significantly higher IQ scores at 7 years than those who did not. The consumption of fish, breads and cereals commeasurable with nutritional guidelines may be beneficial to children's cognitive development. In contrast, consuming margarine daily was associated with poorer cognitive functioning. Further research is needed to identify the nutrients that may underlie this association.     

胖负面身体自我女大学生对胖信息的注意偏好:注意警觉还是注意维持

本研究对已有负面身体自我个体注意偏好研究采用的实验范式的问题进行了分析,提出胖负面身体自我个体对胖相关信息的注意偏向存在的另一种可能,即胖负面身体自我个体对胖相关信息可能存在注意维持时间更长的假设。共设计了3个实验对假设进行验证。实验1a采用线索范式研究高胖负面身体自我个体对胖相关词语的注意警觉和注意维持,线索目标SOA为300ms,实验1b采用同样的实验范式,只是将实验材料变为更具直接意义的身体轮廓图。两个实验的结果均支持实验假设,但是未能排除反应准备和线索对目标产生掩蔽等因素的影响。因此,实验2在身体和花瓶轮廓图周围呈现字母,要求被试对字母进行辨认,对被试的注意维持成分进行直接的测量。结果验证了高胖负面身体自我女大学生对胖身体轮廓图注意维持时间更长。综合几个实验的结果,得到以下结论:在本实验条件下,胖负面身体自我女大学生对胖身体信息的注意偏差成分是注意维持时间更长。     

Casuistic Reasoning in Expert Narratives on Healthy Eating

Individualisation of healthy eating is a broad tendency in Western culture and is becoming a popular ideal in nutrition science. Public perception of dietary knowledge is central to this individualisation and many experts now aim to present dietary knowledge in a way which relates to individual experience, as well as a casuistic style in which particular cases are discussed in relation to general, universal principles. Analysis of casuistic narrative styles in the public communication about healthy eating by experts makes explicit their flexible use of both particular cases and universal claims, in which clinical and personal cases are narratively employed by the experts to invite readers to personally consider dietary knowledge. Such casuistic narration by experts relates human agency and particular bodies to universal concepts in a way that has generative and critical functions with respect to dietary knowledge and understanding. The public articulation of clinical narratives by experts make salient the intersubjective emergence and accumulation of dietary knowledge between expert reasoning and lay understanding. Personal narratives have an essential role in presenting casuistic reasoning through experts’ personal lives and making their own bodies relevant to public communication about healthy eating. This emphasises the experts’ personal agency in relationship to common norms and general knowledge. Furthermore, both clinical and personal narratives are used by experts in their assessment of the shortcomings in public health messages. Experts’ casuistic narration thus does not merely construct credibility but has epistemic functions in constructing dietary knowledge tangible with respect to actual eating practices.     

Support for an expanded tripartite influence model with gay men

This study investigated whether an expanded tripartite influence model would represent gay men's experiences. This model was extended by adding partners and gay community involvement as sources of social influence and considering dual body image pathways (muscularity and body fat dissatisfaction) to muscularity enhancement and disordered eating behaviors. Latent variable structural equation modeling analyses upheld this model for 346 gay men. Dual body image pathways to body change behaviors were supported, although three unanticipated interrelationships emerged, suggesting that muscularity and body fat concerns and behaviors may be more integrated for gay men. Internalization of the mesomorphic ideal, appearance comparison, muscularity dissatisfaction, and body fat dissatisfaction were key mediators in the model. Of the sources of social influence, friend and media pressure to be lean, gay community involvement, and partner, friend, media, and family pressures to be muscular made incremental contributions. Unexpectedly, certain sources were directly connected to body change behaviors.     

Psychosocial correlates of bulimic symptomatology among male athletes

ObjectivesTo examine the relationship of four psychosocial constructs – body dissatisfaction, restrained eating, drive for muscularity, and negative affect – that have been identified as potential risk factors for bulimic symptoms in male athletes.DesignWe used a cross-sectional design and self-report questionnaires.MethodsParticipants were 203 male, NCAA Division I athletes who were drawn from three different U.S. universities and who competed in 17 different varsity sports. Athletes completed self-report measures of body satisfaction, dietary restraint, drive for muscularity (i.e., muscularity behaviors, muscular body image), negative affect (i.e., fear, hostility, guilt, sadness), and bulimic symptomatology.ResultsAfter controlling for the effects of body mass and social desirability, hierarchical regression analysis showed that the psychosocial variables explained an additional 21% of the variance in bulimic symptoms. In the full model, engaging in muscle building behaviors (β = .16), such as lifting weights, as well as restricting caloric intake (β = .33) were associated with higher levels of bulimic symptomatology; negative affect and body dissatisfaction were not.ConclusionsMale athletes' bulimic symptomatology is best explained by the extent to which they report engaging in behaviors to become leaner (i.e., less body fat) and more muscular.     

富血小板血浆（PRP）与脂肪移植的基础研究及临床应用进展

自体脂肪组织移植技术已有上百年的历史,可用于填充各种先天性及后天性软组织缺损,但移植脂肪成活率较低极大地限制了其在临床的广泛应用。随着自体富血小板血浆（PRP）在整形外科领域中的应用及其取得好的成效,PRP 技术逐渐成为了自体脂肪移植修复材料的研究热点。下面就 PRP 的获取与制备、基础研究、临床应用成效及遇到的问题做一综述。     

丙泊酚或七氟醚复合瑞芬太尼麻醉对机体蛋白质分解代谢的影响

比较丙泊酚或七氟醚复合瑞芬太尼全麻维持,对行经腹会阴联合直肠癌根治术（Miles 手术）患者机体蛋白质分解代谢的影响。选择40例将要行 Miles 手术的患者,年龄25岁～65岁,ASA Ⅰ级～Ⅱ级,随机分为两组：一组接受丙泊酚复合瑞芬太尼全麻维持（P 组,n＝20）;另一组接受七氟醚复合瑞芬太尼全麻维持（S 组,n＝20）。尿标本自手术开始切皮（0h）每小时收集一次,检测尿液中3-甲基组氨酸（3-M H）与肌酐（Cr）的比值（3-M H／Cr）。呼吸商（RQ）从手术切皮（0h）以后每小时检测一次。结果 P 组与 S 组 T2（1h ～2h）、T3（2h ～3h）的3-M H ／Cr 值与 T0（0h）、T1（0h ～1h）相比,明显升高,且 P 组 T2和 T3的3-M H／Cr 值和 RQ 均比 S 组低。丙泊酚脂肪乳中的甘油三酯可能会作为供能物质被机体分解利用,从而减少体内蛋白质的分解。     

Expectations of reducing fat intake: The role of perceived need within the theory of planned behaviour

Abstract

Dietary fat intake has been implicated in the causation of major diseases including coronary heart disease and cancer. Hence, current recommendatioris to improve health emphasise the reduction of fat intake (COMA, 1991). The present study investigated the effect of perceived need to reduce fat intake and past behaviour on peoples' expectations of reducing fat intake, using the framework of the Theory of Planned Behaviour (TPB) (Ajzen, 1985; 1991). The effects of estimated fat intake and body weight on perceived need to reduce were also investigated. One hundred and fifty-two adults completed a four-day weighed dietary record and completed a questionnaire based on the TPB. Perceived need to reduce fat intake, cognitive and affective components of attitude and past behaviour wm found to be significant predictors of expectation of reducing fat intake. Perceived body weight and estimated fat intake were significant predictors of perceived need to reduce fat intake. The implications of these findings for health promotion policy are discussed.     

Psychosocial factors as longitudinal predictors of bulimic symptomatology among female collegiate athletes

ObjectivesThis study examined the within-variable stability and prospective cross-lagged pathways between body satisfaction, negative affect, self-reported intentions to engage in dietary restraint, and bulimic symptomatology among female collegiate athletes in weight-sensitive sports.DesignThis study employed a cross-lagged longitudinal design.MethodFemale collegiate gymnasts, swimmers, and divers (n = 325) completed paper-pencil survey batteries at the beginning (Time 1) and end (Time 2) of their 5-month athletic season, including measures of body satisfaction, intentions to engage in dietary restraint, negative affect, and bulimic symptomatology.ResultsFrom Time 1 to Time 2, stability coefficients were highest for intentions to engage in dietary restraint and bulimic symptomatology. Significant cross-lagged relations revealed that Time 1 body satisfaction predicted a decrease in Time 2 negative affect, Time 1 bulimic symptomatology predicted a decrease in Time 2 body satisfaction, and Time 1 negative affect predicted a decrease in Time 2 intentions to engage in dietary restraint.ConclusionsThe relative stability of intentions to engage in dietary restraint and bulimic symptomatology suggests that certain disordered eating behaviors may become more resistant to change over the course of an athletic season and solidify while competing in college. The cross-lagged associations demonstrate the importance of targeting body satisfaction, negative affect, and bulimic behaviors when designing interventions for female collegiate athletes, and implementing such programs at the beginning of an athletic season. Risk factors for bulimic symptomatology should be examined over a time period longer than one athletic season and during transitional experiences (e.g., high school to college sports).     

The experience of feeling fat for women with anorexia nervosa: An interpretative phenomenological analysis

Feeling fat has been implicated as a maintenance factor in anorexia nervosa (AN), despite limited research into the experience. This study expanded the literature by exploring the lived experience of feeling fat for women with a diagnosis of AN. Seven women participated in this study and data was collected through semi-structured interviews. Interpretive Phenomenological Analysis (IPA) was employed to explore the participants’ experience of ‘feeling fat’ and its relevance for clinical treatment. Four main themes emerged from the data: ‘negative sense of self’, ‘feeling out of control’, ‘coping with feeling fat’, and ‘making sense of feeling fat is complex’. These results highlight feeling fat as a significant experience and maintenance factor for women with a diagnosis of AN. Implications for addressing feeling fat within psychological therapy are explored.