Psychosocial predictors of visceral adiposity

Psychosocial factors are thought to influence health through primarily direct physiological mechanisms or the alteration of health related behaviors. Three factors hypothesized to negatively impact health include arousal, life stress, and depressive symptomatology. One recent theorist suggests that the interaction between psychological stress and stress hormones on the neuroendocrine system may result in adverse changes to body composition, most notably the increased deposition of visceral adipose tissue (Bjorntorp, 1993). The current study prospectively examined the relationship between self-reported stressful life events, depressive symptoms and trait arousal on the deposition of visceral fat, as measured by computerized tomography (CT). Subjects were obtained from a sample of middle-aged males and females (n = 120). Stress measures included the Weekly Stress Inventory (WSI), a life-events measure of minor stressors, and the Life Events Survey (LES) a measure of major life events. Depression symptoms were measured with the Center for Epidemiological Studies Depression Scale (CES-D). Stress and depression were assessed at baseline, 6 and 12 months, and the CT images of visceral fat were obtained at baseline and 12 months. Trait arousal was measured with the Arousal Predisposition Scale at baseline. Arousal, stress and depression scores over 12 months were then standardized and averaged, and entered into a hierarchical multiple regression model in order to predict changes in visceral adiposity from baseline to 12 months. The model was significant in predicting visceral fat, accounting for 16.9% of the variance. Further examination of the model indicated the presence of a significant 3-way interaction between arousal, stress and depression, such that visceral fat was predicted by the interaction of low arousal, high stress and high depression. When the interaction terms were added to the regression analysis as additional steps, the model continued to be significant, accounting for 20.9% of the variance. Interestingly, these models were significant in predicting visceral adiposity despite the fact that the relationships observed were not all in the expected directions. These findings have implications for both researchers and clinicians, who may wish to incorporate more specific psychosocial measures and interventions in the study and treatment of overweight and obesity

Neuroanatomical Study of the A11 Diencephalospinal Pathway in the Non-Human Primate

BACKGROUND: The A11 diencephalospinal pathway is crucial for sensorimotor integration and pain control at the spinal cord level. When disrupted, it is thought to be involved in numerous painful conditions such as restless legs syndrome and migraine. Its anatomical organization, however, remains largely unknown in the non-human primate (NHP). We therefore characterized the anatomy of this pathway in the NHP. METHODS AND FINDINGS: In situ hybridization of spinal dopamine receptors showed that D1 receptor mRNA is absent while D2 and D5 receptor mRNAs are mainly expressed in the dorsal horn and D3 receptor mRNA in both the dorsal and ventral horns. Unilateral injections of the retrograde tracer Fluoro-Gold (FG) into the cervical spinal enlargement labeled A11 hypothalamic neurons quasi-exclusively among dopamine areas. Detailed immunohistochemical analysis suggested that these FG-labeled A11 neurons are tyrosine hydroxylase-positive but dopa-decarboxylase and dopamine transporter-negative, suggestive of a L-DOPAergic nucleus. Stereological cell count of A11 neurons revealed that this group is composed by 4002±501 neurons per side. A 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP) intoxication with subsequent development of a parkinsonian syndrome produced a 50% neuronal cell loss in the A11 group. CONCLUSION: The diencephalic A11 area could be the major source of L-DOPA in the NHP spinal cord, where it may play a role in the modulation of sensorimotor integration through D2 and D3 receptors either directly or indirectly via dopamine formation in spinal dopa-decarboxylase-positives cells

Development and Validation of the Parental Authority Questionnaire – Revised

Baumrind\u27s conceptualization of parenting style has influenced research and theorizing about child-rearing for more than 30 years, yet few clinical applications of this work have been realized. The purpose of this study was to examine the psychometric properties of a parenting style measure, the Parental Authority Questionnaire – Revised (PAQ-R). This project furthered the development and validation of the instrument by examining the factor structure, internal consistency, test-retest reliability, and convergent validity of the PAQ-R in a large, ethnically and socioeconomically diverse sample. The factor structure and reliability of the PAQ-R was modest, but generally within the acceptable range. Specifically, the Authoritarian and Permissive subscales of the PAQ-R had modest reliability and convergent validity; these PAQ-R subscales correlated with relevant subscales of the Parenting Scale and the Parent–Child Relationship Inventory. By contrast, the Authoritativeness subscale had poorer psychometric properties when used in lower SES, primarily African American populations. While African American mothers in the sample reported being more Permissive than did Caucasian mothers, these differences disappeared after controlling for income and maternal education. By contrast, African American mothers continued to report more Authoritarian attitudes even after controlling for income and maternal education

Use of the weight efficacy lifestyle questionnaire with African American women: validation and extension of previous findings

While the Weight Efficacy Lifestyle Questionnaire (WEL) shows promise as a measure of self-efficacy for eating control, there is a lack of research examining the psychometric properties of this measure with ethnic minorities. The current study examined the WEL with a sample of 144 overweight and obese African American females. Analyses indicated similar self-efficacy levels compared to predominantly Caucasian samples. Supporting the validity of the WEL, participants undergoing obesity treatment demonstrated modest improvement in WEL scores, while standard care participants showed no changes in self-efficacy over time. Factor analysis indicated a four-factor structure rather than the five factors previously found. The four-factor structure accounted for 61.85% of the variance. Results indicate the WEL may be a valid measure of self-efficacy for overweight and obese African American women, although researchers should be mindful of the variation in scale properties when using the WEL with this population

Problem Social Behavior in the Workplace: An Analysis of Social Behavior Problems in a Supported Employment Setting

The social skills problems that may influence the work-related success of supported employees has been only infrequently documented in the research literature. Though a multitude of research describes the performance-related challenges faced by supported employees, few papers address the interpersonal difficulties encountered by supported employees in the workplace. The present paper uses job trainer or coaches logs and two promising rating scales (the Psychopathology Instrument for Mentally Retarded Adults [PIMRA and PIMRA-S]) to describe the social problems encountered by some supported employees. Job coach\u27s logs indicated that approximately 58% of supported employees had experienced one or more incidents of interpersonal difficulty during their employment tenure and that 40% of the problems experienced by these individuals could be described as sexuality-related. Overall, about 25% of all supported employees had reported incidents of conflict with employees or customers that seemed sexuality-related. In addition, social and developmental factors that might contribute to the interpersonal problems found in the present research are discussed

Psychometric Characteristics of the Parenting Scale in a Head Start Population

Examined the reliability, construct, and concurrent validity of the Parenting Scale (PS), a brief instrument designed to measure dysfunctional parenting practices for parents of young children. In Study 1, 183 primarily African American mothers and their Head Start children completed the PS. The PS, which consists of 3 subscales--Laxness, Overreactivity, and Verbosity--was subjected to confirmatory factor analysis (CFA). Neither the original 3-factor structure, nor a 2-factor structure consisting of the original Laxness and Overreactivity factors, fit the data. A subsequent exploratory factor analysis yielded a 2-factor solution that was generally consistent with the Overreactivity and Laxness subscales identified by Arnold, O\u27Leary, Wolff, and Acker (1993). The 2-factor CFA solution was replicated with a sample of 216 similar mothers, and the 5-item Overreactivity and Laxness subscales retained internal consistencies above .70. Analysis of the convergent validity of the modified PS and its 2 subscales revealed moderate associations with measures of permissiveness, authoritarianism, involvement, and limit setting. Scores on the PS were not correlated significantly with measures of social desirability, maternal education level, or parent report of internalizing behavior problems. Concurrent validity evidence was obtained by correlating the PS with measures of parenting satisfaction and support, parenting stress, maternal depression, and measures of externalizing child behavior problems

A primary care weight management intervention for low-income African-American women

OBJECTIVE: To determine whether a tailored weight management program, addressing the needs of obese, low-income African-American women, would produce greater weight loss than standard medical care. RESEARCH METHODS AND PROCEDURES: A randomized, controlled trial was conducted between 1999 and 2003 with 144 overweight or obese women (predominantly African-American) enrolled at two primary care clinics. Four physicians at each clinic were randomly assigned to provide either tailored weight management interventions or standard care. The tailored condition consisted of six monthly outpatient visits lasting approximately 15 minutes each, which included personalized materials and messages. The main outcome was body weight change. RESULTS: The intervention group lost more weight than the standard care group (p = 0.03). The tailored group lost a mean (standard deviation) of 2.0 (3.2) kg by Month 6. The standard care group gained 0.2 (2.9) kg. More participants in the tailored group lost weight (79% vs. 47%; p = 0.04). DISCUSSION: Obese, low-income, African-American women provided with 90 minutes of physician-delivered, tailored weight management instruction over 6 months achieved greater weight loss than those receiving standard medical care. The primary care physician can be effective in delivering weight loss interventions, and the primary care clinic may be a useful setting to implement weight management interventions