Diverse Body Sizes Research Articles

Body Positivity, Physical Health, and Emotional Well-Being Discourse on Social Media: Content Analysis of Lizzo's Instagram.

Weight stigma is a fundamental cause of health inequality. Body positivity may be a counterbalance to weight stigma. Social media is replete with weight-stigmatizing content and is a driver of poor mental health outcomes; however, there remains a gap in understanding its potential to mitigate the prevalence and impact of harmful messaging and to promote positive effects on a large scale. We selected musical artist Lizzo, whose brand emphasizes body positivity and empowerment, for an instrumental case study on the discourse on social media and specifically Instagram. We focused on 3 domains, including body positivity, physical health, and emotional well-being. These domains challenge social norms around weight and body size and have the potential to positively affect the physical and psychological health of people with diverse body sizes. We evaluated posts by Lizzo, comments from Instagram users, and replies to comments over a 2-month period (October 11 to December 12, 2019). Two coders rated Lizzo's posts and Instagram users' comments for their sentiments on the 3 domains. Replies to Instagram users' comments were assessed for their reactions to comments (ie, did they oppose or argue against the comment or did they support or bolster the comment). Engagement metrics, including the number of "likes," were also collected. The final sample included 50 original posts by Lizzo, 250 comments from Instagram users, and 1099 replies to comments. A proportion of Lizzo's content included body positive sentiments (34%) and emotional well-being (18%); no posts dealt explicitly with physical health. A substantial amount Instagram users' comments and replies contained stigmatizing content including the use of nauseated and vomiting emojis, implications that Lizzo's body was shameful and should be hidden away, accusations that she was promoting obesity, and impeachments of Lizzo's health. In spite of the stigmatizing content, we also discovered content highlighting the beneficial nature of having positive representation of a Black woman living in a larger body who is thriving. Moreover, analysis of the discourse between users illustrated that stigmatizing expressions are being combated online, at least to some degree. This study demonstrates that Lizzo has exposed millions of social media users to messages about body positivity and provided more visibility for conversations about weight and shape. Future research should examine the extent to which body positive messages can lead to greater acceptance of individuals living in larger bodies. Instagram and other social media platforms should consider ways to reduce body-shaming content while finding ways to promote content that features diverse bodies. Shifting the landscape of social media could decrease stereotypes about weight and shape while increasing dialog about the need for greater acceptance and inclusion of people with diverse bodies.

A size-inclusive playroom: Play therapy considerations to promote healing for children of diverse body shapes and sizes.

A size-inclusive playroom: Play therapy considerations to promote healing for children of diverse body shapes and sizes.

Fractional Richness: An index for camera trap networks

Camera trapping networks have the potential to monitor wildlife diversity at large scales. However, their efficacy in detecting different species varies, leading to considerable disparities in population density estimates. Furthermore, species of different trophic levels and body sizes naturally occur at different densities, challenging the evenness assumptions inherent in conventional diversity indices. Here we present a novel index: Fractional Richness, which is specifically designed for application in extensive camera trap networks. The index addresses situations where evenness is uninformative, for example in communities characterized by multiple trophic levels, diverse body sizes, variable population densities, or other complications. To determine the effectiveness of our Fractional Richness index, we modeled spatial patterns of Shannon diversity, species richness, and Fractional Richness for two wildlife communities in Wisconsin USA to quantitatively measure which index best reflected ecologically relevant landscape patterns. One community was much more uneven than the other, with detection rates ranging across three orders of magnitude. The more even community could be modeled accurately with both Shannon diversity and Fractional Richness, but the highly uneven community could only be modeled accurately with Fractional Richness. Maximum population density varies by species, and most wildlife survey methods are not equally capable of detecting all species. In communities with both high and low-density species, or when detectability varies, evenness may not be the most informative measure. In these situations, Fractional Richness may be a more suitable index.

P.016 Re-norming medical education: centering patient experience and diverse bodies in Lumbar Puncture (LP) instruction

Background: Medical curricula are often created with limited patient and student input and underrepresent certain body types. Traditional medical education often prepares learners to perform procedures, such as lumbar punctures (LPs), on a young white able-bodied 70kg male. When approaching diverse patients, this educational gap can lead to medical learners’ lack of confidence, skill, and knowledge, resulting in poor patient experiences. Methods: This co-design project involves patient and student input. We interviewed five patients who underwent LPs and explored their experience through a trauma-informed approach. To visualize landmarking across body types, we recruited nine volunteers of diverse body sizes, ages, tattoos, and skin colour (Fitzpatrick Scale). Incorporating patient narratives, as well as videos and photographs showing landmarking on diverse bodies, we crafted an online LP instructional module. Focus groups of 6-10 students will be held to collect student perception of the effectiveness of the module. Results: Our learning module and related media will be built into Western University’s Undergraduate Medical Education curriculum, available under a Creative Commons license through the Western Health Education Media Library. Conclusions: Integrating patient experience and student feedback, we are developing a comprehensive educational tool to better equip medical learners to deliver patient-centered LPs across diverse body types.

The Role of the MYL4 Gene in Porcine Muscle Development and Its Molecular Regulatory Mechanisms.

Muscle growth stands as a pivotal economic trait within pig production, governed by a complex interplay of multiple genes, each playing a role in its quantitative manifestation. Understanding the intricate regulatory mechanisms of porcine muscle development is crucial for enhancing both pork yield and quality. This study used the GSE99749 dataset downloaded from the GEO database, conducting a detailed analysis of the RNA-seq results from the longissimus dorsi muscle (LD) of Tibetan pigs (TP), Wujin pigs (WJ) and large white pigs (LW) at 60 days of gestation, representing diverse body sizes and growth rates. Comparative analyses between TPvsWJ and TPvsLW, along with differential gene expression (DEG) analysis, functional enrichment analysis, and protein-protein interaction (PPI) network analysis, revealed 1048 and 1157 significantly differentially expressed genes (p < 0.001) in TPvsWJ and TPvsLW, respectively. With stricter screening criteria, 37 DEGs were found to overlap between the 2 groups. PPI analysis identified MYL5, MYL4, and ACTC1 as the three core genes. This article focuses on exploring the MYL4 gene. Molecular-level experimental validation, through overexpression and interference of the MYL4 gene combined with EDU staining experiments, demonstrated that overexpression of MYL4 significantly promoted the proliferation of porcine skeletal muscle satellite cells (PSMSC), while interference with MYL4 inhibited their proliferation. Furthermore, by examining the effects of overexpressing and interfering with the MYL4 gene on the muscle hypertrophy marker Fst gene and the muscle degradation marker FOXO3 gene, the pivotal role of the MYL4 gene in promoting muscle growth and preventing muscle degradation was further confirmed. These findings offer a new perspective on the molecular mechanisms behind porcine muscle growth and development, furnishing valuable data and insights for muscle biology research.

DivaTrack: Diverse Bodies and Motions from Acceleration‐Enhanced Three‐Point Trackers

AbstractFull‐body avatar presence is important for immersive social and environmental interactions in digital reality. However, current devices only provide three six degrees of freedom (DOF) poses from the headset and two controllers (i.e. three‐point trackers). Because it is a highly under‐constrained problem, inferring full‐body pose from these inputs is challenging, especially when supporting the full range of body proportions and use cases represented by the general population. In this paper, we propose a deep learning framework, DivaTrack, which outperforms existing methods when applied to diverse body sizes and activities. We augment the sparse three‐point inputs with linear accelerations from Inertial Measurement Units (IMU) to improve foot contact prediction. We then condition the otherwise ambiguous lower‐body pose with the predictions of foot contact and upper‐body pose in a two‐stage model. We further stabilize the inferred full‐body pose in a wide range of configurations by learning to blend predictions that are computed in two reference frames, each of which is designed for different types of motions. We demonstrate the effectiveness of our design on a large dataset that captures 22 subjects performing challenging locomotion for three‐point tracking, including lunges, hula‐hooping, and sitting. As shown in a live demo using the Meta VR headset and Xsens IMUs, our method runs in real‐time while accurately tracking a user's motion when they perform a diverse set of movements.

Deep learning-based semantic segmentation of human features in bath scrubbing robots

With the rise in the aging population, an increase in the number of semidisabled elderly individuals has been noted, leading to notable challenges in medical and healthcare, exacerbated by a shortage of nursing staff. This study aims to enhance the human feature recognition capabilities of bath scrubbing robots operating in a water fog environment. The investigation focuses on semantic segmentation of human features using deep learning methodologies. Initially, 3D point cloud data of human bodies with varying sizes are gathered through light detection and ranging to establish human models. Subsequently, a hybrid filtering algorithm was employed to address the impact of the water fog environment on the modeling and extraction of human regions. Finally, the network is refined by integrating the spatial feature extraction module and the channel attention module based on PointNet. The results indicate that the algorithm adeptly identifies feature information for 3D human models of diverse body sizes, achieving an overall accuracy of 95.7%. This represents a 4.5% improvement compared with the PointNet network and a 2.5% enhancement over mean intersection over union. In conclusion, this study substantially augments the human feature segmentation capabilities, facilitating effective collaboration with bath scrubbing robots for caregiving tasks, thereby possessing significant engineering application value.

Phenotype predicts interspecific dominance hierarchies in a cloud‐forest hummingbird guild

AbstractCompetition over resources often leads to intra‐ and interspecific interactions, which can be detrimental to the individuals involved. Thus, natural selection should favor communication systems that reliably convey information regarding the relative competitive abilities of an individual, reducing the need for physically damaging confrontation. Body size, sex, age, relatedness, and ornamentation are important factors determining dominance across diverse taxa in intraspecific interactions. These traits, when perceptible, may serve as signals across species in guilds that have frequent interspecific interactions. Hummingbirds provide a tractable system to study such community dynamics due to their high frequency of interactions, variable ornamentation, diverse body sizes, fast metabolism, and large overlap in resource utilization. Even in this system, potential interactions between morphology and coloration are rarely accounted for together when analyzing dominance between species. We take a novel approach to understanding interspecific dominance by assessing behavior, morphology, and coloration across different types of behavioral interactions. Across 11 tropical montane hummingbird species, we find that dominance is predicted by wing size and some metrics of plumage coloration. However, the biological significance of these factors varies between the different dominance behaviors performed. These results inform our understanding of interspecific signaling and its role in the evolution of intraguild communication and resource competition.

A short-form drama series created for the digital media environment: A randomised controlled trial exploring effects on girls’ body satisfaction, acceptance of appearance diversity, and appearance-related internalised racism

‘Edutainment’ micro-interventions are a scalable public health strategy that can challenge media-related body image pressures and race- and weight- based stigma. This study evaluated the impact of viewing a brief, theoretically-informed, short-form drama episode on Black and non-Black adolescent girls’ body image, acceptance of diversity of appearance (assessed by acceptance of an individual in a larger body and a Black individual), and appearance-related internalised racism (among Black girls only). The fictional drama depicted characters of diverse body sizes and race/ethnicities, with each episode focusing on a risk or protective factor for body image concerns among adolescent girls (e.g., appearance-related teasing and conversations). Participants (N = 686; 50.4 % Black, 49.6 % non-Black) aged 13–18 (Mage = 15.72 years) were randomly allocated to view either the first episode of this series (focused on social media’s unrealistic appearance ideals and strategies to resist pressures) or a non-body-image-related control video. Findings revealed no significant differences in body satisfaction between conditions but significant improvements in the acceptance of appearance diversity among all girls who viewed the body image episode. Black girls who viewed this episode experienced significant improvements to appearance-related internalised racism. Edutainment micro-interventions constitute a promising avenue for promoting acceptance of appearance diversity and reducing appearance-related internalised racism.

Comparative Transcriptome Analyses of Leg Muscle during Early Growth between Geese (Anser cygnoides) Breeds Differing in Body Size Characteristics.

Goose is an important poultry commonly raised for meat. The early growth performance of geese significantly influences their market weight and slaughter weight, affecting the poultry industry's economic benefits. To identify the growth surge between the Shitou goose and the Wuzong goose, we collected the early growth body traits from 0 to 12 weeks. In addition, we investigated the transcriptomic changes in leg muscles at the high growth speed period to reveal the difference between the two geese breeds. We also estimated the growth curve parameters under three models, including the logistic, von Bertalanffy, and Gompertz models. The results showed that except for body length and keel length, the best-fitting model between the body weight and body size of the Shitou and Wuzong was the logistic model. The growth turning points of Shitou and Wuzong were 5.954 and 4.944 weeks, respectively, and the turning point of their body weight was 1459.01 g and 478.54 g, respectively. Growth surge occurred at 2-9 weeks in Shitou goose and at 1-7 weeks in Wuzong goose. The body size traits of the Shitou goose and Wuzong goose showed a trend of rapid growth in the early stage and slow growth in the later stage, and the Shitou goose growth was higher than the Wuzong goose. For transcriptome sequencing, a total of 87 differentially expressed genes (DEGs) were identified with a fold change ≥ 2 and a false discovery rate < 0.05. Many DEGs have a potential function for growth, such as CXCL12, SSTR4, FABP5, SLC2A1, MYLK4, and EIF4E3. KEGG pathway analysis identified that some DEGs were significantly enriched in the calcium signaling pathway, which may promote muscle growth. The gene-gene interaction network of DEGs was mainly related to the transmission of cell signals and substances, hematological system development, and functions. This study can provide theoretical guidance for the production and breeding management of the Shitou goose and Wuzong goose and help reveal the genetic mechanisms underlying diverse body sizes between two goose breeds.

“Refusing appearance anxiety”: A content analysis of body positive posts on Chinese social media

“Body positivity” is a global movement trending on social media. It aims to challenge predominant appearance ideals in media and encourage women to accept and appreciate all bodies regardless of appearance. In Western contexts, an increasing number of research has explored the potential of body positive social media to benefit young women’s body image. However, similar research in China is lacking. This study aimed to explore the content of body positivity posts on Chinese social media. Eight hundred eighty-eight posts from Xiaohongshu (one of China’s most popular social media platforms) were coded for positive body image themes, physical appearance-related attributes, and self-compassion themes. The results showed that these posts depicted diverse body sizes and appearances. Additionally, while over 40% of the posts conveyed appearance-focused messages, most contained positive body image themes, and nearly half contained self-compassion themes. The study clarified the content of body positivity posts on Chinese social media and provides theoretical support for future research on body positivity in social media content in China.

Weight-Based Disparities in Youth Mental Health: Scope, Social Underpinnings, and Policy Implications

Weight-based disparities in mental health impair the well-being of youth with overweight and obesity, who comprise a growing majority of young people in the United States. This review summarizes research regarding the extent of weight-based disparities in youth mental health and describes the social underpinnings of these disparities across contexts. Youth with high weight face frequent stigmatization (e.g., bullying, victimization, negative judgment), particularly in the school setting. Weight-based disparities in youth mental health emerge not because of high body weight itself, but because of the stigma associated with having high body weight. As such, policy actions need to address weight stigma. Empirical evidence can inform sound policies to reduce the stigma experienced by youth with high weight in order to support equitable mental health outcomes for youth with diverse body sizes.

Promoting Body Size Diversity in University Recreation Centers

ABSTRACT The purpose of this study was to examine university recreation center (URC) leaders’ perceptions of their URC climate and the strategies used to promote body size diversity. The study’s secondary goal was to explore the URC leaders’ plans and professional development needs to further promote body size diversity and inclusion in their URCs. 141 URC leaders from 37 states in the U.S. participated in a cross-sectional survey. Overall, participants perceived their URCs to have an inclusive climate for people in larger bodies. URC leaders reported adopting strategies consistent with research recommendations for creating inclusive environments. However, there were some misaligned priorities regarding changes needed to establish a more inclusive space for people in diverse bodies. Given previous research recommendations, we advocate that URC leaders shift their focus to more cost-effective efforts that can be feasible to implement and impactful in ensuring the inclusion of people with diverse body sizes in recreation spaces.

Designing for Curves

Designing for Curves

The Effectiveness of Model’s Body Size in Digital and Print Advertisements

Advertisings usually display thin bodies creating and endorsing the beauty standards of the society. Large body size models are sometimes featured in advertisings to show a more inclusive marketing communication. Previous researches have investigated consumer responses to more diverse body sizes in Beauty and Fashion industries ads. This paper aims at investigating advertisement effectiveness, for both print and digital advertisings, through consumer responses (Memorization, Aad, Ab, and Purchase Intention) to body sizes in food advertisements.&#x0D; &#x0D; We used a mixed design study with a between group factor (Media type: Print or Digital) and a within-subject variable (body shape: large, thin or no model), via a folder test procedure. Participants were exposed to a fictive magazine to measure their responses toward advertisements featuring large size model versus thin one. &#x0D; &#x0D; The findings reveal that &amp;ldquo;large model&amp;rdquo; advertisements are less effective compared to &amp;ldquo;thin model&amp;rdquo; advertisements for Memorization, Attitude towards Ad, and Purchasing Intention. However, participants expressed the same Attitude towards the Brand for both conditions. Moreover, hardly any significant influence of the means of exposure to ads (printed or digital) was found. &#x0D; &#x0D; Despite the latest consumer pertinacity trends on companies to adopt diversity for social reasons; consumers, of the food industry, are still better influenced by thin models when it comes to Memorization, Aad, and PI. &#x0D; &#x0D; Furthermore, this study offers practical and societal implications not only for the experimental design, but also for practitioners to comprehend and utilize the match‐up hypothesis of body size condition needed for their marketing and advertising objectives.

Translation and Validation of the Brazilian Portuguese Version of the Broad Conceptualization of Beauty Scale With Brazilian Women

In many countries, women are socialized to adopt a narrow definition of beauty. Research has revealed that, in the United States and China, the ability to broadly conceptualize beauty (perceive beauty in diverse body sizes, shapes, and appearances) is linked to women’s lower anti-fat attitudes, higher body appreciation, and higher well-being. In this study, we translated an existing measure of this construct, the Broad Conceptualization of Beauty Scale (BCBS), into Brazilian Portuguese and evaluated the factor structure and reliability and validity of its scores with a diverse sample of 563 Portuguese women. Findings revealed that the Brazilian Portuguese BCBS contains two factors—external/appearance features of beauty (BCBS-E) and internal features of beauty (BCBS-I)—contrary to the unidimensional factor structure found in previous studies. Support for internal consistency and 3-week test–retest reliability was garnered. Total BCBS and BCBS-E scores evidenced convergent, discriminant, and incremental validity, whereas the BCBS-I did not accrue substantial convergent or incremental validity support beyond its inverse bivariate association with anti-fat attitudes. We recommend the use of the Brazilian Portuguese BCBS in body image research programs as well as clinical practice and prevention programs with Brazilian women seeking support for body dissatisfaction and disordered eating.

The impact of inclusive fashion advertising with plus-size models on female consumers: The mediating role of brand warmth

ABSTRACT This study investigates the effectiveness of inclusive advertising featuring both plus-size models and straight-size models on consumers’ responses. By building on the Brands as Intentional Agents Framework (BIAF), the study also investigates the mechanism of the positive effect of including plus-size models on brand performance. For this study, a between-subjects design of model body size (diverse versus straight only) and a moderator of consumer body size (plus versus straight) were used; a multivariate analysis of covariance was conducted, along with a mediation analysis, to test the proposed hypotheses. The results indicated that inclusive advertisements depicting models with diverse body sizes had a positive main effect on brand attitude and an indirect effect on brand attitude and purchase intention. Brand warmth mediated the positive effect of diverse body sizes on brand attitude and purchase intention. This study contributes to the literature on body image by demonstrating the effectiveness of including plus-size models on two levels of consumer responses – brand attitude and purchase intention – and by demonstrating the mechanism of brand warmth. This study also informs brand managers as to how embracing plus-size models can benefit brand performance.

Small body size phenotypes among Middle and Later Stone Age Southern Africans

Modern humans originated between 300 and 200 ka in structured populations throughout Africa, characterized by regional interaction and diversity. Acknowledgment of this complex Pleistocene population structure raises new questions about the emergence of phenotypic diversity. Holocene Southern African Later Stone Age (LSA) skeletons and descendant Khoe-San peoples have small adult body sizes that may reflect long-term adaptation to the Cape environment. Pleistocene Southern African adult body sizes are not well characterized, but some postcranial elements are available. The most numerous Pleistocene postcranial skeletal remains come from Klasies River Mouth on the Southern Cape coast of South Africa. We compare the morphology of these skeletal elements with globally sampled Holocene groups encompassing diverse adult body sizes and shapes (n = 287) to investigate whether there is evidence for phenotypic patterning. The adult Klasies River Mouth bones include most of a lumbar vertebra, and portions of a left clavicle, left proximal radius, right proximal ulna, and left first metatarsal. Linear dimensions, shape characteristics, and cross-sectional geometric properties of the Klasies River Mouth elements were compared using univariate and multivariate methods. Between-group principal component analyses group Klasies River Mouth elements, except the proximal ulna, with LSA Southern Africans. The similarity is driven by size. Klasies River Mouth metatarsal cross-sectional geometric properties indicate similar torsional and compressive strength to those from LSA Southern Africans. Phenotypic expressions of small-bodied adult morphology in Marine Isotope Stages 5 and 1 suggest this phenotype may represent local convergent adaptation to life in the Cape.

“I’m Supposed To Be Thick”: Managing Body Image Anxieties Among Black American Women

Prior literature on Black women’s body image heavily relies on comparative studies to confirm Black women’s greater body satisfaction relative to white women. Collectively, these studies argue that “cultural buffers” exempt Black women from the thin ideal and instead, encourage women to embrace thickness as a mark of racial pride. And while the literature largely establishes Black women’s preference for a curvaceous figure, I take a different approach by examining women who describe failing to embody thickness and how they reconcile this conflict. Thus, this article asks how women negotiate body dissatisfaction when violating racialized bodily ideals. Drawing on in-depth interviews with 31 Black American women of diverse body sizes and shapes, I demonstrate how women rely on discursive frameworks such as healthism and the “strong Black woman” ideology to reconcile their self-image. While these discourses enable women to defend criticisms of violating thickness, they also participate in stigmatizing other forms of embodiment in their attempts to assuage body dissatisfaction. Overall, these findings reveal Black women’s agency to challenge idealized–and essentialized–notions of thickness that weighed heavily on their body image. Lastly, I discuss the broader implications of my findings within the literature of body politics and offer suggestions for future research.

Weight Stigma as a Predictor of Distress and Maladaptive Eating Behaviors During COVID-19: Longitudinal Findings From the EAT Study

BackgroundWeight stigma is common for people with obesity and harmful to health. Links between obesity and complications from COVID−19 have been identified, but it is unknown whether weight stigma poses adverse health implications during this pandemic.PurposeWe examined longitudinal associations between prepandemic experiences of weight stigma and eating behaviors, psychological distress, and physical activity during the COVID-19 pandemic in a diverse sample of emerging adults.MethodsParticipants (N = 584, 64% female, mean age = 24.6 ± 2.0 years, mean body mass index [BMI] = 28.2) in the COVID-19 Eating and Activity over Time (C-EAT) study were cohort members of the population-based longitudinal study EAT 2010–2018. Weight stigma reported by participants in 2018 was examined as a predictor of binge eating, eating to cope, physical activity, depressive symptoms, and stress during COVID-19. Data were collected via online surveys during the U.S. outbreak of COVID-19 in 2020.ResultsPrepandemic experiences of weight stigma predicted higher levels of depressive symptoms (β = 0.15, p < .001), stress (β = 0.15, p = .001), eating as a coping strategy (β = 0.16, p < .001), and an increased likelihood of binge eating (odds ratio = 2.88, p < .001) among young adults during the COVID-19 pandemic but were unrelated to physical activity. Although associations remained after accounting for demographic characteristics and BMI, the magnitude of longitudinal associations was attenuated after adjusting for prior levels of the outcome variables.ConclusionsYoung adults who have experienced weight stigma may have increased vulnerability to distress and maladaptive eating during this pandemic. Public health messaging could be improved to support people of diverse body sizes and reduce the harmful consequences of weight stigma.