A scoping review of school-based anthropometric measurement.

Though anthropometric measurement (AM) frequently occurs in school settings, it is not without risks to child wellbeing. The aim of this scoping review was to examine how AM in school settings takes place and is reported on to make recommendations on best practices. We identified and extracted data from 440 studies published since 2005 that conducted AM in school (pre-school through secondary/high school) settings. Privacy and sensitivity of AM were unclear in over 90% of studies. Thirty-one studies (7.0%) reported protecting student privacy, while nine (2.0%) reported public measurement. Only five studies reported sensitivity regarding AM (1.1%). Exactly who conducted AM was not specified in 201 studies (45.7%). Sixty-nine studies did not provide a weight status criteria citation (19.2%), and 10 used an incorrect citation (2.7%). In summary, serious shortcomings in the reporting of how AM is conducted and by whom, along with details concerning weight status classification, are evident. There is considerable room for improvement regarding the reporting of key methodological details. We propose best practices for AM in school settings, which also double as conditions that should be met before AM takes place in school settings.

Experiences of Size Inclusive Physical Activity Settings Among Women With Larger Bodies.

Purpose: Size inclusive physical activity settings may help mitigate the impact of physical activity-related weight stigma. In this interpretive description study, we aimed to understand how women with larger bodies experienced size inclusive physical activity settings. The study was informed by a settings-based approach to health promotion. Method: We interviewed nine women with larger bodies who participated in size inclusive physical activity and used an inductive approach to analyze the data. Findings: At the individual level, size inclusion was experienced as an enhancement of well-being, self-worth, and belonging. This was closely tied to the interpersonal level, whereby weight-neutral practices used by fitness instructors and lack of judgment from other exercisers contributed to experiences of size inclusion. At the organizational level, the organization's culture, marketing, programs, and physical spaces could enhance or limit inclusion and participation. However, weight stigma was prevalent in women's experiences outside the physical activity setting. Conclusion: We provide recommendations to improve size inclusion in physical activity settings.

The enigma of weight: Figures, flux, and fitting in.

Purpose: In Western society, the measurement of weight is prioritized over a person's bodily experience. Hermeneutic philosopher Gadamer warned against the emphasis on measurement, rather than experience, in the medical sciences. An examination of the complexity of the experience of weight provides the opportunity to shift focus from quantifying the connection between health and weight to the experience of the person being weighed. Methods: This qualitative hermeneutic study aims to understand people's experiences of weight from the interviews of professionals (n = 7) and lay experts (n = 10). Interviews were analyzed using an interpretive hermeneutic method. Results: The interviews revealed that weight was experienced as a number imbued with meaning and bias, as a number that could be manipulated, and as a constant and anticipated bodily change. Weight change was expected and often unwelcomed, despite weight being a quality of the body that is always in flux. External measures of weight meant to monitor wellness and health inadvertently became an unhealthy fixation that prevented some participants from fully participating in life events and appreciating the stages their bodies were in. Conclusion: Weight change is a necessary condition of being human, and bodies are and will be constantly changing. To achieve health and harmony, one must fit together the acceptance of change and their bodily experience of weight. It is often the preoccupation with weight, not weight itself, that gets in the way of living.

The optics of weight: expert perspectives from the panopticon and synopticon.

Objective: That we all weigh something is a fact of life, yet the material reality of weight is refracted through multiple layers of surveillance revealing contradictions in experience and understanding, depending on one's vantage point. We explored the complexities of weight with the specific aim of furthering understanding of this multifaceted surveillance.Methods and Measures: We used hermeneutics, the philosophy and practice of interpretation, as the method of inquiry. Ten experts by experience and seven professional experts participated in interviews, which were audio- recorded, transcribed, and analyzed. Interpretations were developed through group discussions among the eight authors and reiterative writing.Results: Using the metaphor of optics, we demonstrate how the interplay of the panopticon (the few watching the many) and synopticon (the many watching the few) help us gain a deeper understanding of weight through "fitting in," being "captured by numbers," "dieting: the tyrannic tower," and "the male gaze."Conclusion: Monitoring and judging body weight have become so normative in Western society that "weight watching" practices are synonymous with good citizenship and moral character. This study offers insight about how weight is conceptualized in personal and professional contexts, with implications for body image, dieting, eating disorders, public health, and weight bias.

Exploring weight bias internalization in pregnancy.

BACKGROUND: Recent research has shown that pregnant individuals experience weight stigma throughout gestation, including negative comments and judgement associated with gestational weight gain (GWG). Weight bias internalization (WBI) is often a result of exposure to weight stigma and is detrimental to biopsychological health outcomes. The purpose of this study was to explore WBI in pregnancy and compare scores based on maternal weight-related factors including pre-pregnancy body mass index (BMI), obesity diagnosis and excessive GWG. METHODS: Pregnant individuals in Canada and USA completed a modified version of the Adult Weight Bias Internalization Scale. Self-reported pre-pregnancy height and weight were collected to calculate and classify pre-pregnancy BMI. Current weight was also reported to calculate GWG, which was then classified as excessive or not based on Institute of Medicine (2009) guidelines. Participants indicated if they were diagnosed with obesity by a healthcare provider. Inferential analyses were performed comparing WBI scores according to pre-pregnancy BMI, excessive GWG, and obesity diagnosis. Significance was accepted as p < 0.05 and effect sizes accompanied all analyses. RESULT: 336 pregnant individuals completed the survey, with an average WBI score of 3.9 ± 1.2. WBI was higher among those who had a pre-pregnancy BMI of obese than normal weight (p = 0.04, η2 = 0.03), diagnosed with obesity than not diagnosed (p < 0.001, Cohen's d = 1.3), and gained excessively versus not (p < 0.001, Cohen's d = 1.2). CONCLUSIONS: Pregnant individuals who have a higher BMI, obesity and gain excessively may experience WBI. Given that weight stigma frequently occurs in pregnancy, effective person-oriented strategies are needed to mitigate stigma and prevent and care for WBI.

Weight stigma and prenatal physical activity: Exploring the perspectives of pregnant women living with obesity.

OBJECTIVE: To identify sources of weight stigma in physical activity (PA)-related milieus reported by pregnant women living with obesity. We also report person-informed strategies to improve the delivery of PA promotions and prescriptions to prevent weight stigma and improve maternal PA. DESIGN: This is a qualitative descriptive study and semi-structured interviews were conducted. SETTING AND PARTICIPANTS: Purposive sampling including pregnant women living with obesity, with a body mass index ≥35.0 kg/m2, ≥18 years of age, and receiving specialized prenatal care were recruited from an obstetrics clinic in Kingston, Canada. MEASUREMENT AND FINDINGS: Data were assessed by a content analysis, whereby coded themes represented sources of weight stigma related to prenatal PA. Demographic characteristics (pre-pregnancy body mass index, age, gestational age) were summarized and presented as means and standard deviations. In-depth interview data were collected from eight women. Average pre-pregnancy BMI, age, and gestational age were 44.6±4.8 kg/m2, 32.0±4.1 years, 31.1±5.8 weeks, respectively. Two sources of weight stigma related to prenatal PA were identified: 1. Lack of visual representation - online images and images found in exercise promotional material do not include women who have obesity; 2. Lack of individualized recommendations - currently available prenatal PA guidelines and/or recommendations from healthcare providers do not always consider individual physical barriers or health goals women may have. KEY CONCLUSION AND IMPLICATIONS FOR PRACTICE: By increasing body positive representation of pregnant women exercising and offering person-centered prenatal PA recommendations, maternal PA may improve including women living with obesity. Findings from this work can inform future PA interventions, health promotion programming, and prescriptions from prenatal care providers to implement person-oriented strategies to prevent weight stigma and improve the delivery of care for pregnant women living with obesity.

Effects of physical-activity-related anti-weight stigma materials on implicit and explicit evaluations.

OBJECTIVE: Although there exist videos and images created by Obesity Canada and similar organizations (e.g., the Rudd Center for Food Policy and Obesity), it is not known if the materials have the desired effect of reducing stigma against people with obesity and might have the opposite effect of increasing stigma. Therefore, two studies used implicit and explicit evaluations to examine the effectiveness of images and videos intended to reduce weight stigma. METHODS: Study 1 participants (N = 284; M age = 31.47 years [SD = 11.26]; 177 self-identified as women; 83 self-identified as living with obesity) completed two implicit measures (one with images of people living with obesity and the other with control images) followed by a weight stigma questionnaire. Study 2 participants (N = 308; M age = 31.54 years [SD = 11.35]; 153 self-identified as women; 59 self-identified as living with obesity) were randomly assigned to view an obesity and exercise video and images of persons with obesity, control video and images of persons with obesity, obesity and exercise video and control images, or control video and control images, followed by the implicit measures and explicit evaluation questionnaire. RESULTS: Implicit evaluations of the control images were more positive than the images of persons with obesity. Participants with no history of obesity who saw the control video and control images had lower weight stigma compared to participants in the other conditions. CONCLUSIONS: Materials created to reduce weight stigma might not be effective among people with no history of obesity themselves or via a family member or friend. Intervention and health promotion researchers may wish to investigate effects of the images in combination with other messages because simply using the nonstigmatizing images is likely not enough.

Women's Suggestions for How To Reduce Weight Stigma in Prenatal Clinical Settings.

OBJECTIVE: To describe the experiences of weight stigma in prenatal clinical settings among high-risk pregnant women living with obesity and to obtain women's perspectives regarding changes to prenatal health care practices that may reduce weight stigma. DESIGN: Qualitative descriptive study. SETTING/LOCAL PROBLEM: High-risk obstetrics clinic. Weight stigma experienced in prenatal clinical settings can negatively influence maternal health and well-being as well as communication with health care providers. PARTICIPANTS: Nine pregnant women with obesity who were receiving specialized prenatal care in their third trimester. INTERVENTION/MEASUREMENTS: Women participated in semistructured telephone interviews. Data were inductively analyzed using a content analysis, whereby coded data were organized to represent experiences of or suggestions provided by pregnant women to reduce weight stigma in prenatal clinical settings. RESULTS: Experiences of weight stigma included poor communication, generalizations made about health and lifestyle behaviors, and focusing only on excess body weight during clinical appointments as the cause of negative health outcomes. To reduce weight stigma, women suggested that health care providers practice sensitive communication, offer individualized care for weight management, and reduce the focus on body weight by also independently addressing comorbidities or other health indicators. CONCLUSION: Women interviewed for this study provided suggestions that can be implemented in prenatal clinical settings to reduce weight stigma and improve the delivery of equitable health care.

Motivated, Fit, and Strong-Using Counter-Stereotypical Images to Reduce Weight Stigma Internalisation in Women with Obesity.

BACKGROUND: This study aimed to use implicit retraining to change automatic associations between body size and physical activity (PA) in women with obesity to reduce weight bias internalisation (WBI). METHODS: A Solomon-square experimental design was used to determine the effect of a four-week online implicit retraining intervention on WBI (primary measure) and PA attitudes, self-efficacy, and self-reported behaviour (secondary measures). The intervention was a visual probe task pairing counter-stereotypical images of active individuals with obesity with positive PA-related words. In qualitative telephone interviews, a sub-sample of participants provided feedback and recommendations for using counter-stereotypical images in PA promotion. RESULTS: Women completed the intervention (n = 48) or a control task (n = 55). Results of a RM-ANOVA showed no interaction or main effect of group on WBI. A main effect of time demonstrated that both groups had reduced WBI between pre-test and post-test, through to one-week follow-up. There were no differences between groups or over time for PA attitudes, self-efficacy, or behaviour. Women who completed interviews (n = 16) discussed several benefits and drawbacks of using counter-stereotypical images. CONCLUSION: Implicit retraining did not reduce WBI but qualitative findings support the use of counter-stereotypical PA images.

Body weight misperception and psychological distress among young South Korean adults: the role of physical activity.

BACKGROUND: Emerging evidence suggests that body weight misperception may be associated with psychological distress among people in developed countries. Participating in physical activity (PA) may negate the association between weight misperception and psychological distress given the well-known benefits of PA on psychological health. This study examined the role of PA in associations between body weight misperception and psychological distress among young South Korean adults. METHODS: Data from individuals aged 20 to 39 years who participated in the Fifth Korean National Health and Nutrition Examination Surveys 2010-2012 (N = 6055) was included in the logistic regressions. RESULTS: The proportions of the respondents under- and over-perceiving their body weight were 66.9% and 0.8% among men and 16.3% and 15.6% among women respectively. A moderating effect of PA participation was observed on the relationship between body weight over-perception and depressed mood (Odds Ratio [OR] = 0.55; 95% Confidence Intervals [95% CI] = 0.34, 0.89). Among individuals who did not meet the recommended vigorous-intensity PA (≥ 20 min/session and ≥ 3 day/week), body weight over-perception was associated with depressed mood (OR = 1.71, 95% CI = 1.19, 2.46) compared to the accurate-perception group. However, no association was observed among those who met the recommended vigorous-intensity PA (OR = 1.52, 95% CI = 0.45, 5.22). Similar patterns were found among physically active versus inactive individuals (recommended walking not met: OR = 2.02, 95% CI = 1.29, 3.15; recommended walking met: OR = 1.28, 95% CI = 0.66, 2.49; muscular strengthening exercises for < 2 day/week: OR = 1.74, 95% CI = 1.21, 2.51; muscular strengthening exercises for ≥ 2 day/week: OR = 1.38, 95% CI = 0.37, 5.14). No relationship existed between body weight over-perception and depressed mood after adjusting for PA. CONCLUSIONS: Participating in regular PA may buffer a potential negative impact of body weight over-perception on depressive mood.

Characterization of the microbial acid mine drainage microbial community using culturing and direct sequencing techniques.

We characterized the bacterial community from an AMD tailings pond using both classical culturing and modern direct sequencing techniques and compared the two methods. Acid mine drainage (AMD) is produced by the environmental and microbial oxidation of minerals dissolved from mining waste. Surprisingly, we know little about the microbial communities associated with AMD, despite the fundamental ecological roles of these organisms and large-scale economic impact of these waste sites. AMD microbial communities have classically been characterized by laboratory culturing-based techniques and more recently by direct sequencing of marker gene sequences, primarily the 16S rRNA gene. In our comparison of the techniques, we find that their results are complementary, overall indicating very similar community structure with similar dominant species, but with each method identifying some species that were missed by the other. We were able to culture the majority of species that our direct sequencing results indicated were present, primarily species within the Acidithiobacillus and Acidiphilium genera, although estimates of relative species abundance were only obtained from direct sequencing. Interestingly, our culture-based methods recovered four species that had been overlooked from our sequencing results because of the rarity of the marker gene sequences, likely members of the rare biosphere. Further, direct sequencing indicated that a single genus, completely missed in our culture-based study, Legionella, was a dominant member of the microbial community. Our results suggest that while either method does a reasonable job of identifying the dominant members of the AMD microbial community, together the methods combine to give a more complete picture of the true diversity of this environment.

Activation of C-Cl by ground-state aluminum atoms: an EPR and DFT investigation.

The reaction of ground-state Al atoms with dichloromethane (CH(2)Cl(2)) in an adamantane matrix at 77 K yielded two mononuclear Al species. The magnetic parameters, extracted from the axial EPR spectrum of Species A/A' (g(1) = 2.0037, g(2) = g(3) = 2.0030, a(Al,1) = 1307 MHz, a(Al,2) = a(Al,3) = 1273 MHz, a(35Cl) = 34 MHz and a(37Cl) = 28 MHz) were assigned to the Al-atom insertion product, ClCH(2)AlCl. Density functional theory (DFT) calculations of the values of the Al and Cl hyperfine interaction (hfi) of the Cl(1)-Cl(2)gauche conformer were in close agreement with the experimental values of ClCH(2)AlCl. The second species, B/B', had identical magnetic parameters to those of ClCH(2)AlCl with the exception that the Al hfi was 15% smaller. Coordination of a ligand, possessing a lone pair of electrons, to the Al atom of the insertion product, [ClCH(2)AlCl]:X, could cause the a(Al) to decrease by 15%. Alternatively, it is possible that the Cl(1)-Cl(2) anti conformer of ClCH(2)AlCl is also isolated in the matrix. Support for the spectral assignments is given by calculation of the nuclear hfi of [ClCH(2)AlCl]:H(2)O and the Cl(1)-Cl(2) anti conformer of ClCH(2)AlCl using a DFT method. The potential energy hypersurface for an Al atom approaching CH(2)Cl(2), calculated at the B3LYP level, suggests that Al atom abstraction of Cl forming AlCl and CH(2)Cl is favoured in the gas phase. When produced in a matrix, the close proximity of AlCl and CH(2)Cl could account for the formation of ClCH(2)AlCl. EPR evidence was also found for the formation of the CHCl(2) radical.

Formation of gallaoxetanes: C-O activation of 1,2-epoxybutane by ground-state Ga atoms.

(69/71)Ga atoms were reacted with 1,2-epoxybutane and its isotopomers, 1,2-epoxybutane-1,1-d(2) (CH(3)CH(2)CHOCD(2)) and 1,2-epoxybutane-2-d(1) (CH(3)CH(2)CDOCH(2)), under matrix-isolation conditions. The novel gallaoxetanes CH(3)CH(2)CHCH(2)GaO and CH(3)CH(2)CHCH(2)OGa, resulting from the insertion of the metal atom in the C(1)-O and C(2)-O bonds, respectively, of the 1,2-epoxybutane, were detected by EPR spectroscopy. The Ga and H hyperfine interaction (hfi) values of the gallaoxetanes, calculated using a DFT method, were used to help assign the EPR spectra. A third Ga-centered species, detected at 190 K, underwent spectral changes similar to those of the C(2)-O insertion product upon isotopic substitution of the 1,2-epoxybutane. Although the Ga hfi for this species was 36% smaller than that of the C(2)-O insertion product, the values for the H hfi were similar, suggesting that the carrier of the spectrum was the C(2)-O insertion product where Ga was perturbed by the matrix constraints. The alkyl radical CH(3)CH(2)(•CH)CH(2)OGa, resulting from ring-opening at the C(2)-O bond of 1,2-epoxybutane, was observed at temperatures below 150 K. This radical has been implicated in the formation of the C(2)-O insertion product. The unusually small value found for two of the ß-hydrogens of the alkyl radical is discussed.