Does the camera add 10 pounds? Media use,perceived importance of appearance,and weight concerns among teenage girls

PURPOSE: To examine the relationship between use of electronic media and perceived importance of appearance and weight concerns among adolescent girls. METHODS: Physical measures and self-report surveys were obtained from 837 ninth-grade girls attending pubs lic high schools in San Jose, California (mean age = 14.9 +/- 0.47 years; 36% Latino, 24% White, 22% Asian, 8% Black, 10% other). Correlational and multiple regression analyses were performed with ethnicity, body mass index (BMI), perceived importance of appearance, weight concerns, and media use (based on self-reported average weekly use of television, videotapes, video and computer games, and music videos). RESULTS: Total media use was not significantly related to perceived importance of appearance or weight concerns. When media use was separated into distinct media genres, only hours of watching music videos was related to perceived importance of appearance and weight concerns (r = 0.12, p < .001, and r = .08, p < .05, respectively). In multivariate analyses, after controlling for BMI and ethnicity, no media use variables were significantly associated with either perceived importance of appearance or weight concerns. CONCLUSIONS: Frequent music video use may be a risk factor for increased perceived importance of appearance and increased weight concerns among adolescent girls.     

Demographic and lifestyle factors associated with body mass index among children and adolescents

Cases of overweight and obesity among adults, adolescents, and children are escalating in the United States. Using data from the Continuing Survey of Food Intake for Individuals (CSFII) 1994-1996 and 1998, and the National Health and Nutrition Examination Survey III (NHANES), we developed multivariate regression models to examine the association between demographic and lifestyle variables (gender, race/ethnicity, age, family income, diet, and television viewing) and the body mass index (BMI) of children aged 6-11 years, and adolescents aged 12-19 years for CSFII and aged 12-16 years for NHANES. In the children's model, the statistically significant demographic predictors of BMI were age, race, gender, and family income. Among adolescents, the demographic predictors were age, race, and gender. Among the lifestyle variables, dietary factors were not associated with BMI in children. On the contrary, carbohydrates (less added sugars) had a statistically significant inverse relationship to BMI among adolescents. In both children and adolescents, television viewing was markedly associated with BMI, and participation in team sports was negatively associated with BMI. The overall process by which overweight develops is complex, and our four models explained only a small portion of total variance of BMI. The CSFII models explained 8.5% of the variance for children and 11.4% of the variance for adolescents. The NHANES models explained 8.8% of the variance for children and 12.5% of the variance for adolescents. Demographic variables accounted for roughly one-half of the explained variance for both children and adolescents. The rest of the explained variance was accounted for by television viewing, diet, and family income.     

Demographic and lifestyle factors associated with body mass index among children and adolescents

Cases of overweight and obesity among adults, adolescents, and children are escalating in the United States. Using data from the Continuing Survey of Food Intake for Individuals (CSFII) 1994–1996 and 1998, and the National Health and Nutrition Examination Survey III (NHANES), we developed multivariate regression models to examine the association between demographic and lifestyle variables (gender, race/ethnicity, age, family income, diet, and television viewing) and the body mass index (BMI) of children aged 6–11 years, and adolescents aged 12–19 years for CSFII and aged 12–16 years for NHANES. In the children's model, the statistically significant demographic predictors of BMI were age, race, gender, and family income. Among adolescents, the demographic predictors were age, race, and gender. Among the lifestyle variables, dietary factors were not associated with BMI in children. On the contrary, carbohydrates (less added sugars) had a statistically significant inverse relationship to BMI among adolescents. In both children and adolescents, television viewing was markedly associated with BMI, and participation in team sports was negatively associated with BMI. The overall process by which overweight develops is complex, and our four models explained only a small portion of total variance of BMI. The CSFII models explained 8.5% of the variance for children and 11.4% of the variance for adolescents. The NHANES models explained 8.8% of the variance for children and 12.5% of the variance for adolescents. Demographic variables accounted for roughly one-half of the explained variance for both children and adolescents. The rest of the explained variance was accounted for by television viewing, diet, and family income.     

The contribution of psychosocial and home environmental factors in explaining eating behaviours in adolescents

OBJECTIVE: The present study aimed at investigating the influence of food availability, rules and television viewing habits on eating behaviours in adolescents. DESIGN: Cross-sectional study. SETTING: Four randomly selected middle schools. SUBJECTS: A sample of 534 seventh and eighth graders. INTERVENTIONS: Validated questionnaires were used to measure the family environment and fat, soft drink and fruit consumption. Hierarchical regression analyses on fat, soft drink and fruit consumption, with demographic and psychosocial variables entered as the first and environmental factors as the second block were conducted in boys and girls. RESULTS: Boys with more unhealthy products available at home consumed more fat (P< or =0.001, 95% CI: 8.2-29.4) and more soft drinks (P< or =0.01, 95% CI: 0.2-1.4). Boys who reported better television viewing habits ate more fruit (P< or =0.001, 95% CI: -1.7 to -0.5). Girls who reported better television viewing habits consumed less fat (P< or =0.01, 95% CI: 1.4-9.0) and more fruit (P< or =0.05, 95% CI: -1.0 to -0.1). Girls who reported higher availability of healthy products at home (P< or =0.05, 95% CI: 0.3-3.1) and more food rules (P< or =0.001, 95% CI: -1.8 to -0.5), consumed more fruit. Environmental factors were poor predictors of soft drink consumption among girls. CONCLUSION: Availability of (un)healthy food products, family food rules and TV viewing habits were related to one or more eating behaviours in boys or girls. Although home environmental factors can play an important role in influencing adolescents' eating behaviours, these factors were generally less predictive than demographic and psychosocial variables.     

Television watching and some eating habits of 6-14-year-old children in Amsterdam, the Netherlands; a cross-sectional study

OBJECTIVE: To describe the time spent by children between the ages of 6-14 years watching television during a weekday and to examine associated factors. DESIGN: Cross-sectional questionnaire study. METHOD: Data were collected during a vaccination campaign against meningococci C in Amsterdam in September 2002. From a sample of 2910 parents of 6-14-year-old children 1775 agreed to participate in the study. Socio-demographic characteristics and data on television viewing the previous day, the presence of a television in the child's bedroom and on eating habits were collected by short interviews. RESULTS: In total 1587 children were included in the analyses, 805 boys and 782 girls. In total 40.1% of the boys and 36.5% of the girls had watched television for > or = 2 h during the previous day. Among the children < or = 10 years 28.7% had a television in their bedroom, among children > 10 years this was 45.7%. Age (> 10 years), ethnicity (notably Surinam origin) and having a television in the bedroom was related to spending more time watching television. Having parents with a high socioeconomic status (SES) was associated with less television viewing than having parents with a lower SES. Children who had not eaten fresh fruit or who had visited a snackbar the previous day had been watching television for > or = 2 h more often than children who had eaten fresh fruit (p < 0.001) or who had not visited a snackbar (p < 0.05). CONCLUSION: Children spent a lot of time watching television. In view of the relation between television viewing and overweight this is an alarming development. Possibilities for the prevention of overweight by reducing television viewing must be investigated.     

The Role of Television Access in the Viewing Time of US Adolescents

We identify the adolescent and family factors that shape the time adolescents spend viewing television. Adolescent traits, family/household characteristics, television access, and TV viewing time were assessed by self-report using a web-based survey conducted with a sample of 457 14- to 16-year-old adolescents in a Northeastern US city. Bivariate analyses indicated that the number of televisions in the home, having a bedroom TV, and subscribing to premium cable/satellite channels were each positively and significantly associated with television viewing time. Regression results show that having greater access to TV significantly increased viewing independent of adolescent and family variables. In addition, the influence of different forms of access on adolescent time varied by respondent race. Having a television set in the bedroom was the strongest predictor of TV time for White adolescents, and having more television sets in the home was the strongest predictor of TV time for Black adolescents. The pattern of findings suggests that interventions should encourage parents to make their adolescents' bedrooms television free and to reduce the number of television sets in the home. Campaigns designed to reduce TV viewing may be most effective if they are tailored for distinct audiences.     

Sedentary Behavior and Food Cravings in Diverse Overweight Women: A Pilot Study

Obesity rates have risen sharply in the United States, with minority women among those most affected. Although a majority of Americans are considered inactive, little attention has been devoted to studying the correlation of sedentary behavior with dietary cravings in adults. Objective: The current study used objective and self-report methods to measure sedentary behavior and its relationship to food cravings in a sample of overweight African American and Caucasian women. Design: Thirty-nine adult women (54% African American) with an average body mass index of 33.7 wore accelerometers for one week and completed self-report measures of sedentary behavior, physical activity, and food cravings. Results: Self-reported television viewing time was slightly longer (3.0 versus 2.5 hours), although total sedentary time was shorter (6.7 versus 8.0 hours) on weekends versus weekdays. Weekend but not weekday sedentary time and television viewing were associated with stable aspects of food cravings rather than craving for specific foods. Conclusion: In this small sample, only a third of all sedentary time was attributed to viewing television. Assessing whether sedentary behavior occurs by necessity versus choice may be a factor to consider in examining its relationship to food cravings.     

Do the psychosocial risks associated with television viewing increase mortality? Evidence from the 2008 General Social Survey–National Death Index dataset

BackgroundTelevision viewing is associated with an increased risk of mortality, which could be caused by a sedentary lifestyle, the content of television programming (e.g., cigarette product placement or stress-inducing content), or both.MethodsWe examined the relationship between self-reported hours of television viewing and mortality risk over 30 years in a representative sample of the American adult population using the 2008 General Social Survey–National Death Index dataset. We also explored the intervening variable effect of various emotional states (e.g., happiness) and beliefs (e.g., trust in government) of the relationship between television viewing and mortality.ResultsWe find that, for each additional hour of viewing, mortality risks increased 4%. Given the mean duration of television viewing in our sample, this amounted to about 1.2 years of life expectancy in the United States. This association was tempered by a number of potential psychosocial mediators, including self-reported measures of happiness, social capital, or confidence in institutions. Although none of these were clinically significant, the combined mediation power was statistically significant (P < .001).ConclusionsTelevision viewing among healthy adults is correlated with premature mortality in a nationally representative sample of U.S. adults, and this association may be partially mediated by programming content related to beliefs or affective states. However, this mediation effect is the result of many small changes in psychosocial states rather than large effects from a few factors.     

Mental health and family functioning as correlates of a sedentary lifestyle among low-income women with young children

The authors in this cross-sectional study examined mental health and family environmental factors related to a sedentary lifestyle, including lack of leisure-time physical activity and high levels of television viewing, among low-income mothers/female guardians of preschool-aged children. A self-administered questionnaire was completed by 131 mothers in 2010. Primary outcome measures included television viewing time (minutes/day) and leisure-time physical activity (<150 versus ≥150 minutes per week). Independent variables included depressive symptoms, perceived stress, and family functioning. Demographic factors (age, marriage, work status, education, number of children in the household, and race/ethnicity) were examined as potential covariates. Participating women watched television on average 186.1 minutes/day (i.e., >3 hours). Additionally, 36% of women engaged in less than the recommended 150-minute leisure-time physical activity per week. Hierarchical multiple regression analyses indicated that greater depressive symptoms (B = 76.4, p < 0.01) and lower family functioning (B = 33.0, p < 0.05) were independently related to greater television viewing when controlling for other variables. No independent factors were identified for lack of leisure-time physical activity when controlling for other covariates. Findings suggest that health promotion efforts to promote an active lifestyle among low-income women with young children should address mental health and family functioning factors, especially depressive symptoms.     

Life without TV? cultivation theory and psychosocial health characteristics of television-free individuals and their television-viewing counterparts

Much attention has been paid to the amount of time Americans spend watching television. Cultivation theory has been important in exploring behavioral effects of television viewing for many years. However, psychosocial health has received much less scrutiny in relation to television viewing time. This investigation examined the hypotheses that television-free individuals and viewers adhering to the American Academy of Pediatrics (AAP) recommendations (up to 2 hr of viewing per day) would display a more positive psychosocial health profile when compared with more frequent television viewers. Results confirmed the hypothesis for women, but not for men. Our analysis showed that moderate television viewing, as defined by the AAP, provides a similar relation with psychosocial health as being television-free. Results are discussed in a cultivation theory framework.     

Psychosocial variables associated with binge eating in obese males and females.

OBJECTIVE: This study tested a psychosocial model of binge eating symptoms in obese men and women. Predictor variables included depression, dietary restraint, self-esteem, weight cycling, history of teasing, body dissatisfaction, and neuroticism. METHOD: Participants (N = 808) completed a packet of self-report questionnaires. RESULTS: Weight cycling, teasing about weight and shape, body dissatisfaction, negative affect, and dietary restraint comprised the best fitting models (original and cross-validation) for binge eating in women and men. These variables explained 61-72% of the variance in symptoms of binge eating in the samples of men and 70% of the variance in the samples of women. Although the male and female models were mostly similar, notable differences between them were found. DISCUSSION: The variables that comprise these etiological models should be considered in the development of prevention programs for obese binge eaters. Longitudinal studies, however, are needed to examine these etiological paths and to test for causal relationships.     

Job Acquisition for People with Severe Mental Illness Enrolled in Supported Employment Programs: A Theoretically Grounded Empirical Study

Introduction The main purpose of this study was to test a conceptual model based on the theory of planned behaviour (TPB) to explain competitive job acquisition of people with severe mental disorders enrolled in supported employment programs. Methods Using a sample of 281 people with severe mental disorders participating in a prospective study design, the authors examined the contribution of the TPB in a model including clinical (e.g., severity of symptoms), psychosocial (e.g., self-esteem) and work related variables (e.g., length of time absent from the workplace) as predictors of job acquisition. Path analyses were used to test two conceptual models: (1) the model of job acquisition for people with mental illness adapted from the TPB, and (2) the extended TPB including clinical, psychosocial, and work related variables recognized in the literature as significant determinants of competitive employment. Results Findings revealed that both models presented good fit indices. In total, individual factors predicted 26% of the variance in job search behaviours (behavioural actions). However, client characteristics explained only 8% of variance in work outcomes, suggesting that environmental variables (e.g., stigma towards mental disorders) play an important role in predicting job acquisition. About 56% (N = 157) of our sample obtained competitive employment. Conclusion Results suggest that employment specialists can be guided in their interventions by the concepts found in the extended model of work integration since most of these are modifiable, such as perceived barriers to employment, self-efficacy, and self-esteem.     

Predictors of adolescent male body image dissatisfaction: implications for negative health practices and consequences for school health from a regionally representative sample

BACKGROUND: Adolescent males are more likely to sustain intentional and unintentional injuries, be involved in a physical confrontation, and be successful in suicide attempts. Body image dissatisfaction (BID) has been linked as a possible contributing factor to these negative health behaviors and risks; however, research is limited with males. The interaction of intrapersonal, interpersonal, and social variables in a holistic model has yet to be explored for males. Variables precipitating adolescent males to develop an unhealthy body image and act on negative health behaviors, such as body image drug use, were the impetus for this study. METHODS: A randomized cross‐sectional sample of 330 adolescent males answered questions concerning body image using the Adolescent Body Image Satisfaction Scale (ABISS). Pearson product moment correlations and stepwise regression analyses identified the strongest predictive variables of BID. RESULTS: The strongest contributing variables accounting for 56.7% of model variance were desire for the body of another person (r = .571, p < .001), teasing (r = .490, p < .001), satisfaction with their body when they were younger (r = .450, p < .001), and difficulty coping with criticism (r = .443, p < .001). No statistically significant differences were found for racial/ethnic background (p < .822, n.s.). CONCLUSIONS: Educators and school districts should consider the confluence of psychosocial variables affecting body image and adolescent male health risk behaviors based on a statistically sound predictive model as provided by the ABISS. Targeted programming to enhance body image and address teasing/bullying behaviors is strongly recommended.     

Fatness,physical activity,and television viewing in children during the adiposity rebound period: the Iowa Bone Development Study

BACKGROUND: Understanding the determinants of adiposity in young children may be particularly critical for preventing adult obesity since the age at which body fatness reaches a postinfancy low point (typically 4-6 years) is inversely associated with obesity later in life. METHODS; We examined cross-sectional associations among fatness, leanness, and physical activity in 467 children (range 4-6 years). Activity was measured using accelerometry and parental report of children's television (TV) viewing. Dual energy X-ray absorptiometry was used to quantify body composition. RESULTS: Minutes spent in vigorous activity and TV viewing were the variables most consistently and most highly associated with adiposity. Children in the lowest quartile for vigorous activity had on average (absolute) body fat percentages that were 4% greater than those children in the highest quartile for vigorous activity. Body fat percentages for children in the highest category for TV viewing were on average 3% greater than those children who watched the least amount of TV. CONCLUSIONS: Low levels of vigorous physical activity and high levels of TV viewing are associated with fatness in young children during the adiposity rebound period. This suggests that increasing children's active play may be important in preventing obesity later in life.     

Time with friends and physical activity as mechanisms linking obesity and television viewing among youth

Background

Though bivariate relationships between childhood obesity, physical activity, friendships and television viewing are well documented, empirical assessment of the extent to which links between obesity and television may be mediated by these factors is scarce. This study examines the possibility that time with friends and physical activity are potential mechanisms linking overweight/obesity to television viewing in youth.

Methods

Data were drawn from children ages 10-18 years old (M = 13.81, SD = 2.55) participating in the 2002 wave of Child Development Supplement (CDS) to the Panel Study of Income Dynamics (PSID) (n = 1,545). Data were collected both directly and via self-report from children and their parents. Path analysis was employed to examine a model whereby the relationships between youth overweight/obesity and television viewing were mediated by time spent with friends and moderate-to-vigorous physical activity (MVPA).

Results

Overweight/obesity was directly related to less time spent with friends, but not to MVPA. Time spent with friends was directly and positively related to MVPA, and directly and negatively related to time spent watching television without friends. In turn, MVPA was directly and negatively related to watching television without friends. There were significant indirect effects of both overweight/obesity and time with friends on television viewing through MVPA, and of overweight/obesity on MVPA through time with friends. Net of any indirect effects, the direct effect of overweight/obesity on television viewing remained. The final model fit the data extremely well (χ² = 5.77, df = 5, p<0.0001, RMSEA = 0.01, CFI = 0.99, TLI =0.99).

Conclusions

We found good evidence that the positive relationships between time with friends and physical activity are important mediators of links between overweight/obesity and television viewing in youth. These findings highlight the importance of moving from examinations of bivariate relationships between weight status and television viewing to more nuanced explanatory models which attempt to identify and unpack the possible mechanisms linking them.

     

Biopsychosocial studies on cutaneous malignant melanoma: psychosocial factors associated with prognostic indicators, progression, psychophysiology and tumor-host response

A series of seven studies investigating biopsychosocial aspects of cutaneous malignant melanoma were conducted by a multidisciplinary group of researchers at the University of California, San Francisco. Two studies investigated the relationship of variables derived from a videotaped psychosocial interview and from self-report measures, and two histopathologic indicators: tumor thickness and level of invasion. Associations of psychosocial variables to prognostic indicators were stronger within the younger vs the older subject group. In a multiple regression analysis, patient delay in seeking medical attention emerged as the most significant variable predicting tumor thickness. A study of factors related to patient delay found longer delays in patients who had lesions on the back, less previous knowledge of melanoma, less understanding of its treatment and less minimization of its seriousness. Another study compared the repressive coping reactions--defined as the discrepancy between reported anxiety and that reflected in electrodermal activity--in melanoma patients, cardiovascular disease patients and disease-free controls. The melanoma group was significantly more 'repressed' on the combined self-report/physiological measure, as well as on other self-report measures of repressiveness. In order to investigate the relationship of psychosocial factors to more disease-relevant physiological variables, the next study focused on two clinical variables significantly predictive of disease outcome:mitotic rate of the tumor and lymphocytes at tumor site. Emotional expression of sadness and anger, rated from the videotaped interviews, was positively correlated with tumor-specific host-response factors and negatively correlated with mitotic rate. In another study, subjects who had died or had disease progression were matched on the basis of tumor and demographic characteristics with subjects who had no evidence of disease by follow-up. The unfavorable outcome group had higher scores on self-report scales of dysophoric emotion and distress which were administered one to three years previously. An experimental investigation of relationships among behavioral, physiological and tumor outcome variables in the Syrian hamster found that general activity was correlated positively with greater tumor growth following induction. These results were compared to those from the preceeding two human studies, and discussed in terms of a stress-arousal-coping model.     

The influence of physical activity, socioeconomic status, and ethnicity on the weight status of adolescents

OBJECTIVE: This study examined the effects of physical activity, television viewing, video game play, socioeconomic status (SES), and ethnicity on body mass index (BMI). RESEARCH METHODS AND PROCEDURES: The sample was 2389 adolescents, 10 to 16 years of age (12.7 +/- 1.0 years); 1240 (52%) females and 1149 (48%) males; 77% white and 23% African American; from rural (77%) and urban (23%) settings. BMI and skinfolds were directly assessed. All other data were obtained from questionnaires. RESULTS: Watching television on non-school days was related to being overweight (p < 0.005). However, when BMI analyses were adjusted for ethnicity and SES, there were no significant effects of television viewing on BMI (p > 0.061). Increased hours of video game play enhanced the risk of being overweight for both genders when analyses were adjusted for ethnicity and SES (p < 0.019). In males, participation in as little as one high-intensity physical activity 3 to 5 days a week decreased the ethnic- and SES-adjusted relative risk of being overweight (RR = 0.646; CI: 0.427 to 0.977). For females, the ethnic- and SES-adjusted relative risk for being overweight was not significantly altered by physical activity. The logistic analyses further indicated the influence of low SES and African American ethnicity overshadowed any direct effect of television or videos. DISCUSSION: Because weight status of male adolescents appears to be more related to exercise habits than to television or video game habits, increased participation in high-intensity exercise appears to be important. For females, neither videos nor exercise habits appear to be related to risk of being overweight. However, ethnicity and SES may be important factors that can influence body weight status, while television viewing may be of some importance. Thus, programs to reduce obesity in female adolescent should focus their efforts in lower SES communities.     

Social psychological determinants of patient satisfaction: A test of five hypotheses

Five hypotheses regarding the social psychological determinants of patient satisfaction were tested among patients attending the primary care clinics of a university medical center in Manhatten. The social psychological variables operationalized here were expectations, values, entitlement and perceived occurrences; the three dimensions of satisfaction studied were doctor conduct, convenience and general satisfaction. The social psychological variables together were found to explain only a small proportion of the variance in satisfaction, although their contribution varied with the dimension of satisfaction. Expectations consistantly explained most of the variance in satisfaction ratings; particularly noteworthy was the direct effect of prior expectations of the doctor's conduct on subsequent satisfaction with that dimension of the care received. Values had little independent effect on satisfaction, and the combination of values and expectations (their interaction) was unrelated to satisfaction. Feelings of entitlement were also unrelated to satisfaction ratings. There was some support for the discrepancy model, which holds that the greater the discrepancy between perceived occurrences and prior expectations the less the satisfaction. The importance of carrying out further methodological studies aimed at developing reliable measures of these constructs is stressed.     

The effects of the child and adolescent trial for cardiovascular health intervention on psychosocial determinants of cardiovascular disease risk behavior among third-grade students

PURPOSE: The Child and Adolescent Trial for Cardiovascular Health is a multi-site study of a school-based intervention designed to reduce or prevent the development of risk factors for cardiovascular disease. The goal was to change (or prevent) related risk behaviors and the psychosocial variables that theoretically influence those behaviors. DESIGN: A nested design was used in which schools served as the primary unit of analysis. Twenty-four schools participated at each of four sites (Austin, San Diego, Minneapolis, and New Orleans). Each site had 10 control and 14 intervention schools. SETTING AND SUBJECT: Ninety-six schools (with more than 6000 students) in the four sites were randomized to three treatment conditions: control, school-based interventions, and school-plus-family interventions. The sample included approximately equal numbers of males and females and was 67.5% white, 13.9% African-American, 13.9% Hispanic, and 4.7% other. MEASURES: The psychosocial determinants included improvements in dietary knowledge, intentions, self-efficacy, usual behavior, perceived social reinforcement for healthy food choices, and perceived reinforcement and self-efficacy for physical activity. RESULTS: The findings indicated significant improvements in all the psychosocial determinants measured (p < .0001). The results revealed a greater impact in the school-plus-family intervention schools for two determinants, usual dietary behavior and intentions to eat heart-healthy foods. CONCLUSIONS: These findings support theory-based interventions for changing selected psychosocial determinants of cardiovascular disease risk behavior among children.