A comparative study of the physical activity guidelines for children and adolescents from five countries and WHO

This study presented a narrative review of the six latest sets of guidelines on physical activity for children and adolescents from Australia, Canada, China, the United Kingdom, the United States and WHO, and analysed the history of the development of the guidelines; the policy context in which the guidelines were developed; and the main subjects of the guidelines. The core elements of the latest guidelines were identified and compared, including frequency, intensity, duration (time), and type of physical activity, assessment intensity of physical activity, and risk prevention for physical activity participation. There is an urgent need for obtaining the latest scientific evidence to support and update the contents of the Chinese guidelines. We therefore make the following recommendations for future revisions of the Chinese guidelines based on the findings of this study: (1) to update the recommended frequency, intensity, duration, and type of physical activities that meet the needs for Chinese children and adolescents; (2) to update the methods for assessing physical activity intensity, and identifying and managing the risk factors in participating in physical activity; and (3) to incorporate analyses and reviews of school physical education curriculum for effectively achieving the adequate levels of physical activity.

Public health in the making: Dietary innovators and their on-the-job sociology

Diet is understood to be one of the most important influences on public health and chronic disease, and is particularly implicated in the so-called 'obesity epidemic'. Yet interventions aiming to improve the population's dietary habits have failed to translate into widespread health improvements. Simultaneously, the knowledge landscape has become increasingly contentious, with fat activism challenging dominant approaches to how obesity is framed and addressed. This paper is based on 24 ethnographic interviews, and explores the work of health practitioners promoting therapeutic carbohydrate restriction ('low-carb' diets) for people with metabolic health conditions. Drawing on Michel Callon's study of technological innovation, I show practitioners engaging in 'on-the-job sociology'-situated sociological work to justify, and forge a space for, innovative dietary intervention. These innovators employ physiological explanations of hormones, satiety (or hunger), and pleasure (or shame), supported with personal experience, to emphasise material connections between particular eating habits and the sustainability of dietary improvement in everyday life. They resist fat activist influence on healthcare practice (that has resulted in practitioners avoiding conversations about diet, fatness and health), as well as the more extensively critiqued practices of health promotion. Deflecting blame/shame from individuals, innovators spotlight the role of the food industry in undermining public understandings of food and physiology, and dietary improvement that is achievable and sustainable. Through on-the-job sociology, innovators forge a space to engage patients in collaborative dietary experimentation and improvement. This study highlights the importance of on-the-job sociology in the contemporary knowledge landscape, providing new insights about public health in the making.

Influence and effects of weight stigmatisation in media: A systematic

BACKGROUND

The lack of a comprehensive understanding of the role of mass media in perpetuating weight stigma hinders policy formulation. We reviewed the influence of mass media on weight stigmatisation and the effectiveness of media-based interventions designed to prevent or reduce stigma.

METHODS

We conducted a systematic review across seven databases from inception to December 2021. Included studies assessed exposure to or impact of weight stigma in mass media or examined interventions to reduce stigma through media in populations 12+ years. We synthesised data narratively, categorising studies based on similarity in focus to produce a set of integrated findings. The systematic review is registered in PROSPERO (No. CRD42020176306).

FINDINGS

One-hundred-and-thirteen records were eligible for inclusion from 2402 identified; 95 examined the prevalence of stigmatising content in mass media and its impact on stigma. Weight stigma was prevalent across media types, with the dominant discourse viewing overweight and obesity as an individual responsibility and overlooking systemic factors. Exposure to stigmatising content was found to negatively influence attitudes towards people with overweight or obesity. Few studies considered methods of reducing stigma in the media, with only two testing media-based interventions; their results were promising but limited.

INTERPRETATION

Weight stigma in media content is prevalent and harmful, but there is little guidance on reducing it. Future research focus needs to shift from assessing prevalence and impacts to weight stigma interventions.

FUNDING

None.

Understanding fatness in the public sphere of young students: social representations and emotional response

This study examines how youth collectively represent fatness and determines the emotions it arouses. Understanding how fatness is socially constructed by young people is crucial to create programs that better deal with it. A free association exercise elicited by the word "fatness" was answered by 200 people of the Autonomous Community of the Basque Country (Spain), and the content was analyzed by its lexicon using Alceste software. The results showed that health-related representation of fatness was mostly descriptive, and it was not connected to risky or any emotional response. But fatness was also completely represented as a social pressure issue related to stigmatization and highly correlated with negative emotions, such as sadness, insecurity, embarrassment, anguish, lonesomeness, pity or anger. That is, risky and negative emotions were linked to social non-acceptance, and not with health problems. Thus, the conclusion is that fatness is transmitted from fear and not from a positive construction of the health.

Lifestyle Inequalities: Explaining Socioeconomic Differences in Preventive Practices of Clinically Overweight Women After Menopause

Excess weight and menopause are two major factors increasing aging women's vulnerability to chronic diseases. However, social position and socioeconomic status have also been identified as major determinants influencing both health behaviors and the development of such diseases. This study focuses on the socioeconomic variations of behavioral risk factors of chronic diseases in aging women. By drawing on Bourdieu's sociocultural theory of practice, 40 semistructured interviews were conducted to investigate preventive health practices of clinically overweight, postmenopausal women from contrasting socioeconomic classes living in Canada. Findings emphasize class-based differences with respect to long-term health and preventive practices according to three major themes: priority to long-term time horizons, attention given to risk factors of diseases, and control over future health. Health care providers should strive to work in concert with all subgroups of women to better understand their values, worldviews, and needs to decrease health inequalities after menopause.

Life transitions and relevance of healthy living in late adolescence

Using a cross-sectional qualitative design involving focus groups and interviews, we sought to gain a more detailed understanding of adolescents’ physical activity, eating habits and health perceptions during the transition from secondary school (or high school) to work. Based on thematic analyses, three themes were extracted: (1) perceptions of lifestyle and health, (2) changes in priorities and (3) passive acceptance of internal and external influences on physical activity and diet. Poor diet and physical inactivity appeared to reflect participants’ amotivation towards health behaviours, reluctance to divert from perceived peer norms and efforts to assert independence from parents.

Evaluating the effectiveness of an Australian obesity mass-media campaign: how did the 'Measure-Up' campaign measure up in New South Wales?

In 2008, the Australian Government launched a mass-media campaign 'Measure-Up' to reduce lifestyle-related chronic disease risk. Innovative campaign messages linked waist circumference and chronic disease risk. Communication channels for the campaign included television, press, radio and outdoor advertising and local community activities. This analysis examines the impact of the campaign in the state of New South Wales, Australia. Cross-sectional telephone surveys (n = 1006 adults pre- and post-campaign) covered self-reported diet and physical activity, campaign awareness, knowledge about waist circumference, personal relevance of the message, perceived confidence to make lifestyle changes and waist-measuring behaviours. The campaign achieved high unprompted (38%) and prompted (89%) awareness. From pre- to post-campaign, knowledge and personal relevance of the link between waist circumference and chronic disease and waist measuring behaviour increased, although there were no significant changes in reported fruit and vegetable intake nor in physical activity. Knowledge of the correct waist measurement threshold for chronic disease risk increased over 5-fold, adjusted for demographic characteristics. 'Measure-Up' was successful at communicating the new campaign messages. Continued long-term investment in campaigns such as 'Measure-Up', supplemented with community-based health promotion, may contribute to population risk factor understanding and behaviour change to reduce chronic disease.

The weight of the word: knowing silences in obesity research

In this article, we examine the ethical and methodological tensions entailed in doing qualitative research in obesity studies. Framing our own embodied engagements through critical social theory, we consider how cultural meanings associated with obesity are silenced and negotiated in the research process. This negotiation is fraught with linguistic and corporeal challenges, beginning with the decision to use (or not use) the word obesity in research materials. Obesity is a visible stigma, and we argue that silencing language does not erase the tacit judgments that accompany discursive categorization. It is in a broader context of power relations that we examine the relationship between researcher and participant bodies and the ways in which collective knowingness about fat bodies underpins methodological engagement. The simultaneous presence and absence of obesity have a significant impact on the research process, in shaping both participants' experiences and the researcher's actions and interpretations.

Fighting obesity or obese persons? Public perceptions of obesity-related health messages

OBJECTIVE

This study examined public perceptions of obesity-related public health media campaigns with specific emphasis on the extent to which campaign messages are perceived to be motivating or stigmatizing.

METHOD

In summer 2011, data were collected online from a nationally representative sample of 1014 adults. Participants viewed a random selection of 10 (from a total of 30) messages from major obesity public health campaigns from the United States, the United Kingdom and Australia, and rated each campaign message according to positive and negative descriptors, including whether it was stigmatizing or motivating. Participants also reported their familiarity with each message and their intentions to comply with the message content.

RESULTS

Participants responded most favorably to messages involving themes of increased fruit and vegetable consumption, and general messages involving multiple health behaviors. Messages that have been publicly criticized for their stigmatizing content received the most negative ratings and the lowest intentions to comply with message content. Furthermore, messages that were perceived to be most positive and motivating made no mention of the word 'obesity' at all, and instead focused on making healthy behavioral changes without reference to body weight.

CONCLUSION

These findings have important implications for framing messages in public health campaigns to address obesity, and suggest that certain types of messages may lead to increased motivation for behavior change among the public, whereas others may be perceived as stigmatizing and instill less motivation to improve health.

Turning health research into health promotion: a study of causality and 'critical insights' in a United Kingdom health campaign

This article examines how important decisions about health can alter between public health policy formulation and eventual marketing implementation. Specifically, the article traces the development and production of a major United Kingdom social marketing campaign named Change4Life, and examines how ideas about the causes of and solutions to the obesity epidemic are produced in differing ways throughout the health promotion process. This study examines a variety of United Kingdom health research, policy, marketing strategy and marketing messages between 2008 and 2011. This research demonstrates that claims about causality oscillate and alter throughout the research, policy and Change4Life marketing process. These oscillations are problematic, since the Department of Health described the original consumer research as 'critical'. Given both the importance of the health issues being addressed and the amount of funding dedicated to Change4Life, that 'critical' research was directly contradicted in the campaign requires urgent review. To conclude, the article discusses the utility of social marketing when considering causal claims in health promotion.

Cluster-randomised trial to evaluate the 'Change for Life' mass media/ social marketing campaign in the UK

Background

Social marketing campaigns offer a promising approach to the prevention of childhood obesity. Change4Life (C4L) is a national obesity prevention campaign in England. It included mass media coverage aiming to reframe obesity into a health issue relevant to all and provided the opportunity for parents to complete a brief questionnaire (‘How are the Kids’) and receive personalised feedback about their children’s eating and activity. Print and online C4L resources were available with guidance about healthy eating and physical activity. The study aims were to examine the impact of personalised feedback and print material from the C4L campaign on parents’ attitudes and behaviours about their children’s eating and activity in a community-based cluster-randomised controlled trial.

Methods

Parents of 5–11 year old children were recruited from 40 primary schools across England. Schools were randomised to intervention or control (‘usual care’). Basic demographic data and brief information about their attitudes to their children’s health were collected. Families in intervention schools were mailed the C4L print materials and the ‘How are the Kids’ questionnaire; those returning the questionnaire were sent personalised feedback and others received generic materials. Outcomes included awareness of C4L, attitudes to the behaviours recommended in C4L, parenting behaviours (monitoring and modelling), and child health behaviours (diet, physical activity and television viewing). Follow-up data were collected from parents by postal questionnaire after six months. Qualitative interviews were carried out with a subset of parents (n = 12).

Results

3,774 families completed baseline questionnaires and follow-up data were obtained from 1,419 families (37.6%). Awareness was high in both groups at baseline (75%), but increased significantly in the intervention group by follow-up (96% vs. 87%). Few parents (5.2% of the intervention group) returned the questionnaire to get personalised feedback. There were few significant group differences in parental attitudes or parenting and child health behaviours at follow-up. Physical activity was rated as less important in the intervention group, but a significant group-by-socioeconomic status (SES) interaction indicated that this effect was confined to higher SES families. Similar interactions were also seen for physical activity monitoring and child television time; with adverse effects in higher SES families and no change in the lower SES families. Effects were little better in families that completed the questionnaire and received personalised feedback. At interview, acceptability of the intervention was modest, although higher in lower SES families.

Conclusions

The C4L campaign materials achieved increases in awareness of the campaign, but in this sample had little impact on attitudes or behaviour. Low engagement with the intervention appeared a key issue.

Trial registration number

Current Controlled Trials ISRCTN00791709.