Analysis of mediation and reciprocal effects of changes in weight, self-esteem, and exercise in a behavioral weight loss treatment

Improving the treatment of obesity remains a critical challenge. Several health behaviour change models, often based on a social-cognitive framework, have been used to design weight management interventions (Baranowski et al., 2003). However, most interventions have only produced modest weight reductions (Wadden et al., 2002) and socialcognitive variables have shown limited power to predict weight outcomes (Palmeira et al., 2007). Other predictors, and possibl alte nati e e planatory models, are needed to better understand the mechanisms by which weight loss and other obesity treatment-outcomes are brought about (Baranowski, 2006). Self-esteem is one of these possible mechanisms, because is commonly reported to change during the treatment, although these changes are not necessarily associated with weight loss (Blaine et al., 2007; Maciejewski et al., 2005). This possibility should be more evident if the program integrates regular exercise, as it promotes improvements in subjective well-being (Biddle & Mutrie, 2001), with possible influences on long-term behavioral adherence (e.g. diet, exercise). Following the reciprocal effects model tenets (Marsh & Craven, 2006), we expect that the influences between changes in weight, selfesteem and exercise to be reciprocal and might present one of the mechanisms by which obesity treatments can be improved.

Developing persuasive interfaces

MSCC Dissertation in Computer Engineering

Conhecimentos, atitudes e práticas de médicos e enfermeiros, dos cuidados de saúde primários, no tratamento da obesidade : existe uma associação com as práticas pessoais de actividade física?

Resumo - As doenças crónicas não transmissíveis são uma ameaça crescente à Saúde Pública em Portugal. As principais causas de mortalidade e morbilidade são doenças relacionadas com os estilos de vida, hábitos alimentares e de actividade física. Os Cuidados de Saúde Primários estão na linha da frente para dar resposta a estas patologias. Os profissionais de saúde, nomeadamente médicos e enfermeiros, sentem dificuldades para as tratar, como a falta de tempo, de conhecimentos e de confiança para o fazer, bem como uma descrença na efectividade das suas intervenções no âmbito da mudança comportamental destes pacientes. A dificuldade em referenciar estes pacientes a outros profissionais, especializados, como os nutricionistas e os fisiologistas do exercício, implica dotar médicos e enfermeiros com as competências básicas de aconselhamento alimentar e de actividade física, bem como serem capazes de assumirem uma atitude centrada no paciente e motivadora da mudança comportamental. O objectivo deste estudo é avaliar os conhecimentos, atitudes e práticas no tratamento da obesidade e sua associação com o nível de actividade física reportado por médicos e enfermeiros. Este é um estudo observacional, transversal, que recorre à aplicação de um questionário de resposta directa. --------Abstract - Non communicable chronic diseases are increasingly relevant public health threats. The main causes of mortality and morbidity in Portugal are lifestyle, food and exercise habits, related diseases. Primary health care services are in the front line to adress this pathologies. Health care professionals, namely physicians and nurses, face numerous barriers like reduced consultation time, knowledge and confidence to deal with this problems, as well as a disbelief in the efectiviness of their intervention in patients health behaviour change. The inhability to reference this patients to nutrition and exercise specialists, increases the need to give physicians and nurses the adequate nutrition and exercise basic counselling skills, as well as promoting a patient centred attitude that enables them to increase patients motivation to health behaviour change. The study sought to assess the nutrition knowledge, atittudes and practice and its associations with self - reported personal physical activity habits of primary health care professionals. This is a descriptive, cross- sectional stu

Web-assisted tobacco intervention in Portuguese : intentions to make behavioural changes and behavioural changes

ABSTRACT - The problem of how to support “intentions to make behavioural changes” (IBC) and “behaviour changes” (BC) in smoking cessation when there is a scarcity of resources is a pressing issue in public health terms. The present research focuses on the use of information and communications technologies and their role in smoking cessation. It is developed in Portugal after the ratification of WHO Framework Convention on Tobacco Control (on 8 November 2005). The prevalence of smokers over fifteen years of age within the population stood at 20.9% (30.9% for men and 11.8% for women). While the strategy of helping people to quit smoking has been emphasised at National Health Service (NHS) level, the uptake of cessation assistance has exceeded the capacity of the service. This induced the search of new theoretical and practical venues to offer alternative options to people willing to stop smoking. Among these, the National Health Plan (NHP) of Portugal (2004-2010), identifies the use of information technologies in smoking cessation. eHealth and the importance of health literacy as a means of empowering people to make behavioural changes is recurrently considered an option worth investigating. The overall objective of this research is to understand, in the Portuguese context, the use of the Internet to help people to stop smoking. Research questions consider factors that may contribute to “intentions to make behavioural changes” (IBC) and “behavioural changes” (BC) while using a Web-Assisted Tobacco Intervention Probe (WATIP). Also consideration is given to the trade-off on the use of the Web as a tool for smoking cessation: can it reach a vast number of people for a small cost (efficiency) demonstrating to work in the domain of smoking cessation (efficacy)”? In addition to the introduction, there is a second chapter in which the use of tobacco is discussed as a public health menace. The health gains achieved by stopping smoking and the means of quitting are also examined, as is the use of the Internet in smoking cessation. Then, several research issues are introduced. These include background theory and the theoretical framework for the Sense of Coherence. The research model is also discussed. A presentation of the methods, materials and of the Web-Assisted Tobacco Intervention Probe (WATIP) follows. In chapter four the results of the use of the Web-Assisted Tobacco Intervention Probe (WATIP) are presented. This study is divided into two sections. The first describes results related to quality control in relation to the Web-Assisted Tobacco Intervention Probe (WATIP) and gives an overview of its users. Of these, 3,150 answered initial eligibility questions. In the end, 1,463 met all eligibility requirements, completed intake, decided on a day to quit smoking (Dday) and declared their “intentions to make behavioural changes” (IBC) while a second targeted group of 650 did not decide on a Dday. With two quit attempts made before joining the platform, most of the participants had experienced past failures while wanting to stop. The smoking rate averaged 21 cigarettes per day. With a mean age of 35, of the participants 55% were males. Among several other considerations, gender and the Sense of Coherence (SOC) influenced the success of participants in their IBC and endeavour to set quit dates. The results of comparing males and females showed that, for current smokers, establishing a Dday was related to gender differences, not favouring males (OR=0.76, p<0.005). Belonging to higher Socio-economic strata (SES) was associated with the intention to consider IBC (when compared to lower SES condition) (OR=1.57, p<0.001) and higher number of school years (OR=0.70, p<0.005) favoured the decision to smoking cessation. Those who demonstrated higher confidence in their likelihood of success in stopping in the shortest time had a higher rate of setting a Dday (OR=0.51, p<0.001). There were differences between groups in IBC reflecting the high and low levels of the SOC score (OR=1.43, p=0.006), as those who considered setting a Dday had higher levels of SOC. After adjusting for all variables, stages of readiness to change and SOC were kept in the model. This is the first Arm of this research where the focus is a discussion of the system’s implications for the participants’ “intentions to make behavioural changes” (IBC). Moreover, a second section of this study (second Arm) offers input collected from 77 in-depth interviews with the Web-Assisted Tobacco Intervention Probe (WATIP) users. Here, “Behaviour Change” (BC) and the usability of the platform are explored a year after IBC was declared. A percentage of 32.9% of self-reported, 12-month quitters in continuous abstinence from smoking from Dday to the 12-month follow- up point of the use of the Web-Assisted Tobacco Intervention Probe (WATIP) has been assessed. Comparing the Sense of Coherence (SOC) scores of participants by their respective means, according to the two groups, there was a significant difference in these scores of non smokers (BC) (M=144,66, SD=22,52) and Sense of Coherence (SOC) of smokers (noBC) (M=131,51, SD=21,43) p=0.014. This WATIP strategy and its contents benefit from the strengthening of the smoker’s sense of coherence (SOC), so that the person’s progress towards a life without tobacco may be experienced as comprehensible, manageable and meaningful. In this sample the sense of coherence (SOC) effect is moderate although it is associated with the day to quit smoking (Dday). Some of the limitations of this research have to do with self-selection bias, sample size (power) and self-reporting (no biochemical validation). The enrolment of participants was therefore not representative of the smoking population. It is not possible to verify the Web-Assisted Tobacco Intervention Probe (WATIP) evaluation of external validity; consequently, the results obtained cannot be applied generalized. No participation bias is provided. Another limitation of this study is the associated limitations of interviews. Interviewees’ perception that fabricating answers could benefit them more than telling the simple truth in response to questions is a risk that is not evaluated (with no external validation like measuring participants’ carbon monoxide levels). What emerges in this analysis is the relevance of the process that leads to the establishment of the quit day (Dday) to stop using tobacco. In addition, technological issues, when tailoring is the focus, are key elements for scrutiny. The high number of dropouts of users of the web platform mandates future research that should concentrate on the matters of the user-centred design of portals. The focus on gains in health through patient-centred care needs more research, so that technology usability be considered within the context of best practices in smoking cessation.

Gesture based persuasive interfaces for public ambient displays

Dissertação de Mestrado em Engenharia Informática 2º Semestre, 2011/2012

Reversible behavioural autistic-like regression: A manifestation of a special (new?) epileptic syndrome in a 28-month-old child. A 2-year longitudinal study .

A 28-month-old boy was referred for acute onset of abnormal head movements. History revealed an insidious progressive regression in behaviour and communication over several months. Head and shoulder 'spasms' with alteration of consciousness and on one occasion ictal laughter were seen. The electroencephalograph (EEG) showed repeated bursts of brief generalized polyspikes and spike-wave during the 'spasms', followed by flattening, a special pattern which never recurred after treatment. Review of family videos showed a single 'minor' identical seizure 6 months previously. Magnetic resonance imaging was normal. Clonazepam brought immediate cessation of seizures, normalization of the EEG and a parallel spectacular improvement in communication, mood and language. Follow-up over the next 10 months showed a new regression unaccompained by recognized seizures, although numerous seizures were discovered during the videotaped neuropsychological examination, when stereotyped subtle brief paroxysmal changes in posture and behaviour could be studied in slow motion and compared with the 'prototypical' initial ones. The EEG showed predominant rare left-sided fronto-temporal discharges. Clonazepam was changed to carbamazepin with marked improvement in behaviour, language and cognition which has been sustained up to the last control at 51 months. Videotaped home observations allowed the documentation of striking qualitative and quantitative variations in social interaction and play of autistic type in relation to the epileptic activity. We conclude that this child has a special characteristic epileptic syndrome with subtle motor and vegetative symptomatology associated with an insidious catastrophic 'autistic-like' regression which could be overlooked. The methods used to document such fluctuating epileptic behavioural manifestations are discussed.

Factors associated with clinical leptospirosis: a population-based case-control study in the Seychelles (Indian Ocean).

BACKGROUND: In Western countries, leptospirosis is uncommon and mainly occurs in farmers and individuals indulging in water-related activities. In tropical countries, leptospirosis can be up to 1000 times more frequent and risk factors for this often severe disease may differ. METHODS: We conducted a one-year population-based matched case-control study to investigate the frequency and associated factors of leptospirosis in the entire population of Seychelles. RESULTS: A total of 75 patients had definite acute leptospirosis based on microagglutination test (MAT) and polymerase chain reaction (PCR) assay (incidence: 101 per 100,000 per year; 95% confidence interval [CI]: 79-126). Among the controls, MAT was positive in 37% (past infection) and PCR assay in 9% (subclinical infection) of men aged 25-64 with manual occupation. Comparing cases and controls with negative MAT and PCR, leptospirosis was associated positively with walking barefoot around the home, washing in streams, gardening, activities in forests, alcohol consumption, rainfall, wet soil around the home, refuse around the home, rats visible around the home during day time, cats in the home, skin wounds and inversely with indoor occupation. The considered factors accounted for as much as 57% of the variance in predicting the disease. CONCLUSION: These data indicate a high incidence of leptospirosis in Seychelles. This suggests that leptospires are likely to be ubiquitous and that effective leptospirosis control in tropical countries needs a multifactorial approach including major behaviour change by large segments of the general public.

Attitudes of the public towards policies to address obesity

Key points Obesity and the related health burden is a growing problem in Ireland. Understanding public attitudes to policy interventions is important, as it provides a key indicator of the potential effectiveness of interventions and the readiness of the general public for policy implementation. The present research aimed to determine public acceptance of a range of policies to address obesity in Ireland. To this end, a survey of attitudes towards obesity-oriented policies among a nationally representative sample of the population of Irish adults was conducted. Strikingly high levels of public support were evident for a wide range of obesity-oriented interventions. The findings support prior research on behaviour change in key policy areas such as diet and smoking which demonstrates that support for interventions tends to decrease as the intrusiveness of interventions increases. Consistent with previous research, socio-demographic factors only explain a small portion (2 - 6%) of the variance in policy support. Overall, the findings indicate substantial public readiness for addressing obesity in Ireland, particularly through child-focused policies, informational measures, subsidies for healthy foods and co-operation between government and the food industry. - See more at: http://www.safefood.eu/Publications/Research-reports/Attitudes-of-the-public-towards-policies-to-addres

BeeZee Bodies

BeeZee Bodies is a family weight management programme targeted at children aged 7 15 designed to produce a sustainable reduction in childhood obesity through effective behaviour change in families.Aims:o To enhance self-esteemo To improve perceived body imageo To maintain or reduce BMI and waist circumference in children (and parents where necessary)o To increase levels of physical activityo To enhance parenting efficacyo For families to feel empowered to make significant changes to their lifestyle and for these to be sustainable over time.

Lite4Life (Tier 2 adult weight management service)

This service Aims: To provide a multi-component weight management service that supports sustainable behaviour change and weight loss in adults 16 years and over with a BMI 28. To enable patients to develop the necessary personal attributes for their own long term weight management and to understand the impact of their weight on their health and co-morbidities. Objectives: To provide an evidence based, multi-component tier 2 weight management service that improves patients knowledge and skills for effective and sustainable weight loss helps patients identify their own facilitators for positive behaviour change and to address underlying barriers to long-term behaviour changeincreases patients self-efficacy and confidence in their ability to address their weight To be an integral part of the tiered approach to weight management services for the population of Stockton. To ensure equitable service provision across Stockton-on-Tees. To provide intensive group based service, one-to-one support and maintenance support. To support the service user to develop and review a personalised goal setting plan phase 2 and at discharge after phase 2. To ensure a smooth transition from the service (tier2) to tier 1 services to ensure continuity of care for service users.Recruit referrals using a variety of and appropriate methods. To establish a single point of contact for referrals into the service.Continually promote the service across a range of mediums and liaise and work in partnership with key interdependencies (refer to 2.4) To establish a robust database and data collection system in line with information governance. To ensure the access criteria, care pathway and referral process is clearly understood by all health care professionals and those who may refer into the service. To establish close links with, and signpost and/or enable service users to access suitable services where patient needs indicate this. This may include access to Tees Time to Talk (IAPT) for psychological therapies; Specialist Weight Management Service; physical activity programmes; Tier 1 services; and primary care. To provide the necessary venues, equipment and assets needed to deliver the programme, ensuring due regard is given to the quality and safety of all materials used. To collect and provide data in quarterly reports to the Commissioner to allow for continued monitoring and evaluation of the service in line with the Standard Evaluation Framework (available at www.noo.org.uk/core/SEF) and as specified by the Commissioner.

CHIP-Community Health Improvement Programme (Group-Based)

This intervention aims to: - Increase fruit and vegetable intake - Increase activity levelsInitiate weight loss - Reduce health risks - Provide effective weight loss tools - Increase participant behaviour change skills

Keep it in the family

Primary Aims of this intervention are weight management and behaviour change of children 7-13 years.Secondary aims include parental weight management and increase in self esteem and confidence in both children and their family

Health Trainers weight management service

The aim of the intervention is to offer tailored advice, motivation, and practical support to individuals who want to adopt a healthier lifestyle. The objectives are to support clients in setting goals and planning behaviour change

Live 4 LIFE (Lifestyle Intervention for Food and Exercise)

Primary aims of this intervention are weight management and behaviour change of children 7-16 years old and secondary aims include parental weight management and increase in self esteem and confidence in both children and their families. The Referred Child:Will understand the importance of healthy eating and physical activity.Be able to make informed choices.Will have increased confidence and self esteem. The Parents:Will understand the importance of healthy eating and physical activity.Be able to make informed choices for themselves and their children.Feel empowered to continue a healthy lifestyle. The Family:Will understand the importance of healthy eating and physical activity.Will be able to work as a team to encourage each other to make healthy choices.Will feel confident enough to continue activities together.

Get up and Go

Aims and objectives of intervention: - Stabilising of BMI or a 3% reduction in BMI at each follow up - Reduction in waist circumference - Reduction in overall weight - Improvement in 'nutrition score' and adverse behaviour change index based on self reported confidence and food frequency questionnai