Rural African American Women With Severe Obesity: A Cross-Sectional Analysis of Lifestyle Behaviors and Psychosocial Characteristics

PURPOSE

To examine differences in lifestyle behavioral and psychosocial factors between rural African American women with Class 3 obesity and those with overweight, and Class 1-2 obesity.

DESIGN

Cross-sectional study.

SETTING

Rural Southeastern United States.

SUBJECTS

Participants included 289 African American women with a mean age of 56 years, 66% with a high school education or less, and a mean body mass index (BMI) of 38.6 kg/m2; 35% (n = 102) were classified with Class 3 obesity.

MEASURES

We objectively measured height, weight, and physical activity steps/day. Self-reported dietary and physical activity behaviors, general health-related quality of life, mental health, and social support were measured with validated surveys.

ANALYSIS

Chi-Square analysis for categorical variables and analysis of variance (ANOVA) - via multiple linear regression - for continuous variables.

RESULTS

There were no significant demographic differences between BMI groups, except for age, where women with Class 3 obesity were on average younger (51 vs 58 y, P < .001). Although dietary behaviors did not differ significantly between groups, we observed significant group differences in self-reported and objective measures of physical activity. The age-adjusted difference in means for self-reported total physical activity minutes/wk. was 91 minutes, with women categorized with Class 3 obesity reporting significantly fewer weekly minutes than those with overweight/Class 1-2 obesity (64.3 vs 156.4 min/wk. respectively, P < .01). Among psychosocial variables, only in the physical component scores of health-related quality of life did we find significant group differences - lower physical well-being among women with Class 3 obesity compared to those with overweight/Class 1-2 obesity (P = .02).

CONCLUSION

For African American women with Class 3 obesity living in rural setting, these findings suggest behavioral weight loss interventions may need to target physical activity strategies that address physical, psychosocial, and environmental barriers.

"If I start panicking over having enough, then I start eating too much": Understanding the eating behaviors of SNAP recipients in larger bodies during COVID-19

BACKGROUND/OBJECTIVE

Living in a food-insecure household may increase the risk for disordered eating. Though the Supplemental Nutrition Assistance Program (SNAP) was designed to reduce food insecurity, it may increase risk for disordered eating with the frequency in which benefits are distributed. Limited research has explored the lived experiences of managing eating behaviors while on SNAP, particularly among SNAP participants in larger bodies, and during COVID-19. Thus, the purpose of this study is to examine the experiences with eating behaviors among adults with a BMI ≥ 25 kg/m², and who received SNAP benefits during the COVID-19 pandemic.

METHODS

Eligible adults were recruited to participate in a semi-structured interview. Interviews were transcribed verbatim and analyzed using thematic analysis and content analysis.

RESULTS

Participants (N = 16), had a mean (±SD) age of 43.4 ± 10.9 years, and overwhelmingly identified as female (86 %). One-third of the participants were Black. We identified 4 main themes: (1) not having enough money/benefits to cover needs; (2) navigating loss of control and emotional eating; (3) making sure the kids are alright; and (4) still feeling the pressure to manage weight.

CONCLUSION

Managing eating behaviors while also navigating SNAP benefits is complex and may exacerbate risk of disordered eating.

From proximity concerns to constant snacking: Narratives of food access and consumption patterns before and during the COVID-19 pandemic

Objective: The goal of this research was to uncover narratives around food access and consumption among Black women who attend HBCUs before and during the COVID-19 pandemic. Participants: Black women, ages 18-25. Methods: Focus groups were used to understand how participants defined healthy foods as well as barriers and facilitators of consumption. During the pandemic follow-up focus groups uncovered how COVID-19 impacted their access and consumption patterns. Results: Findings revealed that HCBU women faced similar and distinct concerns around food access prior to and during the pandemic. Students were limited by price, budgets, proximity to healthy foods, kitchen access, and cooking tools. However, proximity or transportation both before and during the COVID-19 pandemic encouraged students to access healthy foods. Conclusion: For students who are already at a societal disadvantage and attend a university located in a food desert, access to nutritious foods can be an exacerbated plight.

Using Black Feminist Theory and Methods to Uncover Best Practices in Health Promotion Programming

This study was created to uncover the social determinants of Black American women's success in health promotion programs. We used the Superwoman Schema to understand the complexities of Black womanhood and uncover best practices in the promotion of their health. The sample consisted of women ages 18-25 who attend a large southern HBCU. We collected data using qualitative focus groups. Participants reported the greatest health-related concerns Black American women facing are mental health, obesity, and relationships with Black men. When it comes to health promotion programs, respondents reported a desire for classes that are fun, interactive, informative, educational, and include group interaction, accessible, and incentivize participation. Uncovering the social determinants of Black American women's health and program success is central in decreasing extant health disparities. Future health scholars are urged to incorporate Black feminist theory and methods into their work to create health promotion interventions tailored for Black women.

A Modular Digital Twinning Framework for Safety Assurance of Collaborative Robotics

Digital twins offer a unique opportunity to design, test, deploy, monitor, and control real-world robotic processes. In this paper we present a novel, modular digital twinning framework developed for the investigation of safety within collaborative robotic manufacturing processes. The modular architecture supports scalable representations of user-defined cyber-physical environments, and tools for safety analysis and control. This versatile research tool facilitates the creation of mixed environments of Digital Models, Digital Shadows, and Digital Twins, whilst standardising communication and physical system representation across different hardware platforms. The framework is demonstrated as applied to an industrial case-study focused on the safety assurance of a collaborative robotic manufacturing process. We describe the creation of a digital twin scenario, consisting of individual digital twins of entities in the manufacturing case study, and the application of a synthesised safety controller from our wider work. We show how the framework is able to provide adequate evidence to virtually assess safety claims made against the safety controller using a supporting validation module and testing strategy. The implementation, evidence and safety investigation is presented and discussed, raising exciting possibilities for the use of digital twins in robotic safety assurance.

Adjudicating Mild Cognitive Impairment Due to Alzheimer's Disease as a Novel Endpoint Event in the TOMMORROW Prevention Clinical Trial

BACKGROUND

The onset of mild cognitive impairment (MCI) is an essential outcome in Alzheimer's disease (AD) prevention trials and a compelling milestone for clinically meaningful change. Determining MCI, however, may be variable and subject to disagreement. Adjudication procedures may improve the reliability of these determinations. We report the performance of an adjudication committee for an AD prevention trial.

METHODS

The TOMMORROW prevention trial selected cognitively normal participants at increased genetic risk for AD and randomized them to low-dose pioglitazone or placebo treatment. When adjudication criteria were triggered, a participant's clinical information was randomly assigned to a three-member panel of a six-member independent adjudication committee. Determination of whether or not a participant reached MCI due to AD or AD dementia proceeded through up to three review stages - independent review, collaborative review, and full committee review - requiring a unanimous decision and ratification by the chair.

RESULTS

Of 3494 participants randomized, the committee adjudicated on 648 cases from 386 participants, resulting in 96 primary endpoint events. Most participants had cases that were adjudicated once (n = 235, 60.9%); the rest had cases that were adjudicated multiple times. Cases were evenly distributed among the eight possible three-member panels. Most adjudicated cases (485/648, 74.8%) were decided within the independent review (stage 1); 14.0% required broader collaborative review (stage 2), and 11.1% needed full committee discussion (stage 3). The primary endpoint event decision rate was 39/485 (8.0%) for stage 1, 29/91 (31.9%) for stage 2, and 28/72 (38.9%) for stage 3. Agreement between the primary event outcomes supported by investigators' clinical diagnoses and the decisions of the adjudication committee increased from 50% to approximately 93% (after around 100 cases) before settling at 80-90% for the remainder of the study.

CONCLUSIONS

The adjudication process was designed to provide independent, consistent determinations of the trial endpoints. These outcomes demonstrated the extent of uncertainty among trial investigators and agreement between adjudicators when the transition to MCI due to AD was prospectively assessed. These methods may inform clinical endpoint determination in future AD secondary prevention studies. Reliable, accurate assessment of clinical events is critical for prevention trials and may mean the difference between success and failure.

Understanding Teach-Back and Teach-To-Goal Strategies Embedded in Support Calls for a Health Literacy-Sensitive Childhood Obesity Treatment Trial

BACKGROUND

Low caregiver health literacy (HL) is related to increased obesity risk for their children. Teach-Back and Teach-to-Goal (TB/TTG) are strategies that may improve comprehension of key concepts for people who have low HL but have yet to be examined in the context of childhood obesity treatment.

OBJECTIVE

This study evaluated TB/TTG strategies integrated within support calls delivered to caregivers as part of a 3-month childhood obesity intervention.

METHODS

Ninety-four caregivers (60% Black, 42% high school education or less, 53% with income ≤$29,999, and 34% low HL) with overweight/obese children age 8 to 12 years enrolled in a childhood obesity intervention. Caregiver HL was assessed at baseline using the Newest Vital Sign and caregivers were dichotomized to low and adequate HL groups for analyses. Caregivers received 6 bi-weekly support calls that alternated with in-person, family sessions. Call completion rates, comprehension of key content (correct responses on TB/TTG questions), and satisfaction with support calls were evaluated. Qualitative information on call satisfaction was gathered at the 3-month time point.

KEY RESULTS

Average completion rate across all calls was 62% with a mean call time of 26 minutes (no significant difference between HL groups). Caregivers had an average score of 0.90 out of 1 when evaluating overall call comprehension by scoring TB/TTG performance. Content comprehension in calls 1, 3, and 4 was significantly higher among caregivers with adequate HL relative to low HL (p < .1). Caregivers from both HL groups felt satisfied with calls [9.1 (2.0)/10-point scale] and agreed that calls helped them learn class material better [8.1 (2.7)]. Qualitatively, caregivers provided 81 (75%) positive responses (e.g., good content) and 27 (25%) negative responses (e.g., too lengthy) regarding the support calls.

CONCLUSIONS

Support calls using TB/TTG strategies were feasible, well received, and should be considered for incorporation into childhood obesity interventions. [HLRP: Health Literacy Research and Practice. 2021;5(3):e208-e217.] Plain Language Summary: This study evaluated support calls that used Teach-Back and Teach-to-Goal health literacy strategies as part of a childhood obesity treatment trial. Support calls were well accepted and facilitated comprehension of the key learning objectives in caregivers, regardless of health literacy level. These strategies should be considered for incorporation into childhood obesity treatment interventions to increase uptake of main concepts.

Capacity Development and Evaluation of a Parent Advisory Team Engaged in Childhood Obesity Research

Guided by community-based participatory research principles, this mixed-methods process evaluation explored the experience and capacity of a newly formed Parental Advisory Team (PAT) engaged in childhood obesity research in a medically underserved region. Following the successful completion of a 3-month evidence-based childhood obesity treatment program (iChoose), 13 parents/caregivers who completed iChoose consented to participate in the PAT. Between June 2015 and March 2016, the PAT had nine monthly meetings and completed mixed-methods capacity assessments. They engaged in activities related to understanding iChoose outcomes, defining their role and purpose as a partnership, initiating content development, and pilot testing maintenance intervention components for future iChoose efforts. Assessments included a quantitative survey administered at baseline and 9 months, and a qualitative interview completed at 9 months. Results indicated that PAT members' perceptions of the identified capacity dimensions were positive at baseline (3.8-4.3 on a 5-point scale) and remained positive at follow-up (3.9-4.4 on a 5-point scale); changes were not statistically significant. Qualitative data revealed that PAT members were satisfied with group participation and desired to enhance their role in subsequent iChoose research. Understanding and promoting parental engagement in the research process fills an important gap in childhood obesity literature.

Collision cascades overlapping with self-interstitial defect clusters in Fe and W

Overlap of collision cascades with previously formed defect clusters become increasingly likely at radiation doses typical for materials in nuclear reactors. Using molecular dynamics, we systematically investigate the effects of different pre-existing self-interstitial clusters on the damage produced by an overlapping cascade in bcc iron and tungsten. We find that the number of new Frenkel pairs created in direct overlap with an interstitial cluster is reduced to essentially zero, when the size of the defect cluster is comparable to that of the disordered cascade volume. We develop an analytical model for this reduced defect production as a function of the spatial overlap between a cascade and a defect cluster of a given size. Furthermore, we discuss cascade-induced changes in the morphology of self-interstitial clusters, including transformations between [Formula: see text] and [Formula: see text] dislocation loops in iron and tungsten, and between C15 clusters and dislocation loops in iron. Our results provide crucial new cascade-overlap effects to be taken into account in multi-scale modelling of radiation damage in bcc metals.

Using the Clear Communication Index to Improve Materials for a Behavioral Intervention

Ensuring that written materials used in behavioral interventions are clear is important to support behavior change. This study used the Clear Communication Index (CCI) to assess the original and revised versions of three types of written participant materials from the SIPsmartER intervention. Materials were revised based on original scoring. Scores for the entire index were significantly higher among revised versions than originals (57% versus 41%, p < 0.001); however, few revised materials (n = 2 of 53) achieved the benchmark of ≥90%. Handouts scored higher than worksheets and slide sets for both versions. The proportion of materials scored as having "a single main message" significantly increased between versions for worksheets (7% to 57%, p = 0.003) and slide sets (33% to 67%, p = 0.004). Across individual items, most significant improvements were in Core, with four-items related to the material having a single main message. Findings demonstrate that SIPsmartER's revised materials improved after CCI-informed edits. They advance the evidence and application of the CCI, suggesting it can be effectively used to support improvement in clarity of different types of written materials used in behavioral interventions. Implications for practical considerations of using the tool and suggestions for modifications for specific types of materials are presented.

From Bright Bodies to iChoose: Using a CBPR Approach to Develop Childhood Obesity Intervention Materials for Rural Virginia

This community-based participatory research (CBPR) project used a collaborative process to develop a culturally relevant workbook for parents of overweight children. We followed a mixed methods iterative process to assess clear communication using a CBPR approach. Materials were evaluated using readability tests, the Clear Communication Index (CCI), and the Suitability Assessment of Materials (SAM). In addition, we used surveys and focus groups to investigate parents' perceptions and gather feedback from delivery staff using the workbook. While workbook materials maintained adequate grade reading levels, our iterative process and the use of CCI and SAM led to significant improvements in (a) clearly communicating the objectives of the program, (b) being culturally relevant, and (c) reaching a high satisfaction among users. These findings suggest that evaluative measures for written materials should move beyond readability and need to account for level of clarity and cultural appropriateness of messages. Furthermore, we found that that an iterative process to intervention's material development using clear communication strategies while involving community members, parents, and research partners can lead to workbook materials that are culturally relevant to the target audience, and better communicate program objectives. Finally, this is a potentially generalizable process for improving clear communication of written health information materials.

Problem behaviours and psychotropic medication use in intellectual disability: a multinational cross-sectional survey

BACKGROUND

Problem behaviours (PBs) are a common cause for clinician contact in people with disorders of intellectual development and may be a common cause for the prescription of psychotropic medication. We aimed to use a large, multinational sample to define the prevalence of PBs, the associations with psychotropic medication use, and to assess for any potential 'diagnostic overshadowing' by the label of PBs in a population of people with disorders of intellectual development.

METHOD

A multinational, multi-setting, cross-sectional service evaluation and baseline audit was completed. Data were collected from UK hospitals, UK community settings, Sri Lanka and Hong Kong. A semi-structured questionnaire was completed by treating clinicians, capturing demographic details, prevalence rates of intellectual disability and psychotropic medication use, alongside psychiatric co-morbidity.

RESULTS

A sample size of 358 was obtained, with 65% of included participants treated in an inpatient setting. Psychotropic use was prevalent (90%) in our sample, particularly antipsychotics (74%). The prevalence of PB was high (83%). There was no statistically significant association between psychotropic prescription and recorded psychiatric co-morbidity, suggesting prevalent 'off-label' use for PBs, or poor recording of psychiatric co-morbidity. There was some evidence of possible diagnostic overshadowing due to the PB classification. A higher dose of psychotropic medication was associated with aggression toward others (P = 0.03).

CONCLUSIONS

We found evidence of prevalent potential 'off-label' use for psychotropic medication, which may be due to PBs. We also found evidence of potential diagnostic-overshadowing, where symptoms of psychiatric co-morbidity may have been attributed to PBs. Our findings provide renewed importance, across borders and health systems, for clinicians to consider a holistic approach to treating PBs, and attempting to best understand the precipitants and predisposing factors before psychotropic prescribing.

Psychiatry of learning disability – a future with mental health?

Aims and Method

A postal survey was sent to all consultants in the psychiatry of learning disability from four English regions. Their views on job satisfaction, their core roles and the management re-structuring of services were elicited.

Results

The proportion agreeing or strongly agreeing with each management option was 79% for integrated mental health–learning disability trusts, 61% for specialist learning disability trusts, 47% for care trusts, 10% for primary care trusts and 5% for social services. Only 34% felt consulted or able to influence the process of change and only 33% were satisfied with the current management changes within their trust but 67% were satisfied overall with their jobs.

Clinical Implications

Management from integrated mental health–learning disability trusts is the most preferred option for psychiatrists in learning disability. A large number of consultants, though otherwise satisfied with their jobs, feel excluded or unable to influence the current changes in management structures. A model of integrated service provision in line with the government's learning disability strategy is presented.

The Influence of Parental Health Literacy Status on Reach, Attendance, Retention, and Outcomes in a Family-Based Childhood Obesity Treatment Program, Virginia, 2013-2015

Introduction

Few interventions have evaluated the influence of parent health literacy (HL) status on weight-related child outcomes. This study explores how parent HL affects the reach, attendance, and retention of and outcomes in a 3-month multicomponent family-based program to treat childhood obesity (iChoose).

Methods

This pre–post, quasiexperimental trial occurred in the Dan River Region, a federally designated medically underserved area. iChoose research protocol and intervention strategies were designed using an HL universal precautions approach. We used validated measures, standardized data collection techniques, and generalized linear mixed-effect parametric models to determine the moderation effect of parent HL on outcomes.

Results

No significant difference in HL scores were found between parents who enrolled their child in the study and those who did not. Of 94 enrolled parents, 34% were low HL, 49% had an annual household income of less than $25,000, and 39% had a high school education or less. Of 101 enrolled children, 60% were black, and the mean age was 9.8 (standard deviation, 1.3) years. Children of parents with both low and high HL attended and were retained at similar rates. Likewise, parent HL status did not significantly influence improvements in effectiveness outcomes (eg, child body mass index [BMI] z scores, parent BMI, diet and physical activity behaviors, quality of life), with the exception of child video game/computer screen time; low HL decreased and high HL increased screen time (coefficient = 0.52, standard error, 0.11, P < .001).

Conclusion

By incorporating design features that attended to the HL needs of parents, children of parents with low HL engaged in and benefited from a family-based childhood obesity treatment program similar to children of parents with high HL.

Head banging as a form of self-harm among inpatients within forensic mental health and intellectual disability services

Introduction

“Head banging” is a common form of self-harm, linked to numerous negative outcomes including significant brain damage. However, little research has investigated the prevalence and correlates of head banging behaviour in clinical populations.

Method

Head banging episodes were identified from the incident records (n = 5417) of two inpatient forensic services (one intellectual disability and one mental health), using relevant search terms. Rates were compared between individual patients, by gender, diagnosis and level of security. Incident accounts were analysed qualitatively using thematic analysis.

Results

Two hundred and twenty nine incidents of head banging were recorded, occurring approximately every three days in each service. The prevalence of the behaviour between individual patients varied widely, ranging from one to 38 incidents within one year. Women and patients with intellectual disability appeared more likely to engage in head banging. Qualitative incident reports indicated that head banging was associated with mental distress, anger, and psychotic experiences.

Discussion

Head banging occurs frequently in forensic services, and has documented associations with traumatic brain injury in affected individuals, thus negatively impacting progress through the care pathway and treatment outcomes. Further research should investigate short and long term management strategies and treatment approaches, in order to minimise harm.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

A Systematic Review and Synthesis of Outcome Domains for use Within Forensic Services for People with Intellectual Disabilities

Aims

In response to the Winterbourne scandal, and the large number of people with intellectual disabilities (IDs) and offending behavior being treated in psychiatric hospitals, this study identified the domains that should be used to measure treatment outcomes of this group.

Methods

A systematic search of relevant databases was undertaken to identify domains. Sixty studies met the eligibility criteria, and findings were synthesized using content analysis. The findings were refined within a consultation and consensus exercises with carers, service users, and experts.

Results

The final framework encompassed three a priori super-ordinate domains (a) effectiveness, (b) patient safety, and (c) patient and carer experience. Within each of these, further sub-domains emerged from our systematic review and consultation exercises. These included severity of clinical symptoms, offending behaviors, reactive and restrictive interventions, quality of life and patient satisfaction.

Conclusions

To index recovery, services need to measure outcome using this framework.

The prevalence of obesity among forensic intellectual disability inpatients

Background

Inpatient mental health settings have been described as “obesogenic” environments, due to factors including psychotropic medication, high calorie food, restricted physical activity and sedentary lifestyles. No research has investigated obesity among forensic intellectual disability inpatients, despite this populations’ increased risk. Therefore, this paper aims to evaluate the prevalence and correlates of overweight and obesity on, and during admission.

Method

The weight and body mass index data of 46 inpatients (15 women and 31 men) within a specialist intellectual disability forensic service was examined for the study.

Results

Only six patients (13%) were a normal weight at admission, whereas 40 (87%) were overweight or obese. During their admission, 28 (61%) gained weight (average 11.8 kg), and one (2%) maintained. However, 17 patients (37%) lost weight (average 6.2 kg), though 16 remained in overweight/obese categories. There was no correlation between length of stay and weight/BMI.

Conclusions

The majority of patients were overweight or obese on admission, and approximately 60% gained weight during their admission. Women appeared at greater risk of obesity. There was no relationship between length of stay and weight. This is potentially due to the high prevalence of obesity on admission and the impact of previous admissions on weight. The results highlight the need for effective weight management interventions with this population.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

One-Year Mixed-Methods Case Study of a Community-Academic Advisory Board Addressing Childhood Obesity

OBJECTIVE

Using a community-based participatory research and systems-based approach, the purpose of this community case study is to describe the planning process and first-year experiences of community-academic advisory board (CAB) partners involved with the development of an evidence-based childhood obesity treatment program in a medically underserved region.

METHOD

Regional community partners ( n = 9; Pittsylvania/Danville Health District, Children's Healthcare Center, Danville Parks & Recreation, and Danville Boys & Girls Club) and academic partners ( n = 9) met monthly to select and adapt an evidence-based childhood obesity program, develop evaluation and recruitment protocols, and plan for program implementation. In the first 3 months, members developed a mixed-methods capacity evaluation, administered at 3 and 11 months following the first CAB meeting.

RESULTS

Most capacity dimensions were rated highly and demonstrated no significant change over time. However, perceptions of trust approached a significant increase ( p = .055), the ability to resolve conflicts significantly increased ( p = .018), and participation and influ-ence perceptions significantly decreased ( p = .001). Qualitative analysis elucidated members' experiences and key facilitator and barrier themes emerged.

CONCLUSIONS

Similarities and differences between community and academic members' experiences allowed synthesis of best practices and lessons learned. The methodological framework and best practices can inform the capacity development for new community-academic collaborations.

Well-being in wounds inventory (WOWI): development of a valid and reliable measure of well-being in patients with wounds

OBJECTIVE

Physical and psychosocial deficits have been reported in people living with chronic wounds. While the negative impact of these factors on an individual's quality of life (QoL) is well documented, there has been little research into the well-being of those living with chronic wounds, despite recent calls for increased attention to this related, yet distinct construct. This paper introduces the Well-being in Wounds Inventory (WOWI) and provides support for the WOWI as a valid and reliable measure of well-being in patients living with chronic wounds.

METHOD

A draft questionnaire was administered to a convenience sample of individuals with chronic wounds (n=85) and the resulting data subject to factor analysis in order to refine the structure of the questionnaire. The reliability, validity and responsiveness of the resulting questionnaire were then tested by administration to a second sample of individuals with wounds (n=49). Socio-demographic data, issues affecting patient well-being and well-being factors, such as, emotions; perceived coping skills; social support; personal control; hope for the future, were measured.

RESULTS

Results confirmed the WOWI as a reliable and valid measure of well-being. Items loaded onto two subscales, 'personal resources' and 'wound worries'. Analysis revealed the WOWI to be highly feasible measure of well-being, with good test-retest reliability and responsiveness to changes in health status.

CONCLUSION

The current study highlights the importance of assessing well-being factors in individuals living with chronic wounds. It introduces the WOWI as a valid and reliable measure of well-being in chronic wound patients. The authors recommend health-care practitioners take account of well-being as part of a holistic treatment plan in order to maximise patient outcomes.

DECLARATION OF INTEREST

This project was funded by Urgo Medical. The authors have no conflict of interest to declare.

A Mobile Climbing Robot for High Precision Manufacture and Inspection of Aerostructures

In this paper we describe the design, development, and experimental trials of a climbing robot for manufacturing and inspection applications within the aerospace industry. We describe the mechanical platform, which utilizes vacuum for attachment to vertical and overhanging surfaces, and a traction system that enables rapid movement of the robot over planar and curved surfaces of any orientation. The main applications considered during the research were the manufacturing processes for large external surface structures such as wings and the post-manufacturing and in-service inspection of such structures. The design of suitable tool packages for manufacturing and non-destructive testing is considered in the paper. The first tool package to be implemented and tested was a five-axis high precision drill, which is described. The control system is described within this paper along with the software architecture. The software architecture for the robot was generalized, allowing different robot configurations to be described and implemented rapidly through structured configuration files. Particular attention is paid to the robot’s localization and navigation system, which provides tool point precision to aircraft manufacturing tolerances. The localization system uses data from several different types of sensors and combines these with information provided by a surface model to derive six-degrees-of-freedom position and orientation using an extended Kalman filter to fuse the state information from the different sources. Tool point position is calculated through direct kinematic transformations. Improvements to this work are described, which utilize one of the initial releases of Lieca’s new six-degrees-of-freedom precision measurement instruments, the Lieca LTD-800. We also summarize the experimental trials and the initial performance in terms of tool point precision and climbing performance. The concept of application of the robot and details of the technologies included in the robot that are outlined in this paper are the subject of separate pending patent applications filed by BAE SYSTEMS plc.

Effects of a behavioral and health literacy intervention to reduce sugar-sweetened beverages: a randomized-controlled trial

Background

Despite excessive consumption of sugar-sweetened beverages (SSB), little is known about behavioral interventions to reduce SSB intake among adults, particularly in medically-underserved rural communities. This type 1 effectiveness-implementation hybrid RCT, conducted in 2012–2014, applied the RE-AIM framework and was designed to assess the effectiveness of a behavioral intervention targeting SSB consumption (SIPsmartER) when compared to an intervention targeting physical activity (MoveMore) and to determine if health literacy influenced retention, engagement or outcomes.

Methods

Guided by the Theory of Planned Behavior and health literacy strategies, the 6 month multi-component intervention for both conditions included three small-group classes, one live teach-back call, and 11 interactive voice response calls. Validated measures were used to assess SSB consumption (primary outcome) and all secondary outcomes including physical activity behaviors, theory-based constructs, quality of life, media literacy, anthropometric, and biological outcomes.

Results

Targeting a medically-underserved rural region in southwest Virginia, 1056 adult participants were screened, 620 (59 %) eligible, 301 (49 %) enrolled and randomized, and 296 included in these 2015 analyses. Participants were 93 % Caucasian, 81 % female, 31 % ≤ high-school educated, 43 % < $14,999 household income, and 33 % low health literate. Retention rates (74 %) and program engagement was not statistically different between conditions. Compared to MoveMore, SIPsmartER participants significantly decreased SSB kcals and BMI at 6 months. SIPsmartER participants significantly decreased SSB intake by 227 (95 % CI = −326,−127, p < 0.001) kcals/day from baseline to 6 months when compared to the decrease of 53 (95 % CI = −88,−17, p < 0.01) kcals/day among MoveMore participants (p < 0.001). SIPsmartER participants decreased BMI by 0.21 (95 % CI = −0.35,−0.06; p < 0.01) kg/m² from baseline to 6 months when compared to the non-significant 0.10 (95 % CI = −0.23, 0.43; NS) kg/m² gain among MoveMore participants (p < 0.05). Significant 0–6 month effects were observed for about half of the theory-based constructs, but for no biological outcomes. Health literacy status did not influence retention rates, engagement or outcomes.

Conclusions

SIPsmartER is an effective intervention to decrease SSB consumption among adults and is promising for translation into practice settings. SIPsmartER also yielded small, yet significant, improvements in BMI. By using health literacy-focused strategies, the intervention was robust in achieving reductions for participants of varying health literacy status.

Trial registration

Clinicaltrials.gov; ID: NCT02193009.

Enhanced recovery after surgery (ERAS) for head and neck oncology patients

OBJECTIVES

To describe the development of an enhanced recovery after surgery (ERAS) protocol for people undergoing surgery for head and neck cancer.

DESIGN

Service improvement project.

PARTICIPANTS

Head and neck oncology patients.

METHODS

The programme was developed in a series of structured meetings over a 6-month period. Stakeholders included oral and maxillofacial surgeons, otolaryngologists, anaesthetists, dieticians, physiotherapists, speech and language therapists (SALT) and nursing staff. Based on evidence within current literature and a consensus among the group, an ERAS programme for head and neck surgery patients was formulated. A 12-month study of compliance with the ERAS programme was undertaken from February 2014 to January 2015.

RESULTS

The process has resulted in the realisation of a head and neck ERAS programme. Key elements include a patient diary, nutritional optimisation, avoiding tracheostomy when possible, goal-directed fluid therapy intra-operatively and a specific head and neck postoperative pain management protocol. Overall compliance was high. Important areas showed lower levels of compliance - only 55% of people were given an explanation of the ERAS programme preoperatively, 75% took preoperative carbohydrate drinks, 10% had individualised goal-directed fluid therapy, and 7% were mobilised in the first 24 h after surgery. The mean length of hospital stay was 14.55 days (sd 7.48).

CONCLUSIONS

The ERAS programme developed is now embedded in the care pathway for people undergoing head and neck cancer surgery in our unit. The mean length of hospital stay has reduced since the introduction of the programme.

Contribution of the Leg Club model of care to the well-being of people living with chronic wounds

OBJECTIVE

Social support impacts well-being. Higher levels of social support encourage treatment adherence and aid healing in people living with chronic wounds. The Leg Club model of care harnesses social support mechanisms to improve patient outcomes. This study investigated whether social support mechanisms available through a Leg Club environment influenced well-being.

METHOD

Participants were community Leg Club members. Socio-demographic data was collected, and the Well-being in Wounds Inventory (WOWI) administered to assess 'wound worries,' 'personal resources,' and 'well-being'. Participants' perceived social situation, length of time attending a Leg Club, wound duration, and feelings about their physical appearance were also measured.

RESULTS

The subjects recruited (n=49) were aged between 50 and 94 years (mean=75.34, standard deviation=10.31). Membership of a Leg Club did impact well-being factors. Time spent at a Leg Club improved 'personal resources' over time. 'Perceived social situation' predicted key aspects of well-being, as did 'time spent attending a Leg Club' and 'feelings about physical appearance.' Social support and relief from social isolation were important aspects of Leg Club membership for participants.

CONCLUSION

Attending a Leg Club enhances well-being in people living with a chronic wound; social support has an important role to play in this relationship. Future research should consider the specific interplay of social support mechanisms of Leg Club, and other relevant wound-related variables to optimise patient well-being and treatment outcomes.

DECLARATION OF INTEREST

The Urgo Foundation funded this project. The authors have no conflicts of interest to declare.

Assessing the internal and external validity of mobile health physical activity promotion interventions: a systematic literature review using the RE-AIM framework

Background

Mobile health (mHealth) interventions are effective in promoting physical activity (PA); however, the degree to which external validity indicators are reported is unclear.

Objective

The purpose of this systematic review was to use the RE-AIM (reach, effectiveness, adoption, implementation, and maintenance) framework to determine the extent to which mHealth intervention research for promoting PA reports on factors that inform generalizability across settings and populations and to provide recommendations for investigators planning to conduct this type of research.

Methods

Twenty articles reflecting 15 trials published between 2000 and 2012 were identified through a systematic review process (ie, queries of three online databases and reference lists of eligible articles) and met inclusion criteria (ie, implementation of mobile technologies, target physical activity, and provide original data). Two researchers coded each article using a validated RE-AIM data extraction tool (reach, efficacy/effectiveness, adoption, implementation, maintenance). Two members of the study team independently abstracted information from each article (inter-rater reliability >90%) and group meetings were used to gain consensus on discrepancies.

Results

The majority of studies were randomized controlled trials (n=14). The average reporting across RE-AIM indicators varied by dimension (reach=53.3%, 2.67/5; effectiveness/efficacy=60.0%, 2.4/4; adoption=11.1%, 0.7/6; implementation=24.4%, 0.7/3; maintenance=0%, 0/3). While most studies described changes in the primary outcome (effectiveness), few addressed the representativeness of participants (reach) or settings (adoption) and few reported on issues related to maintenance and degree of implementation fidelity.

Conclusions

This review suggests that more focus is needed on research designs that highlight and report on both internal and external validity indicators. Specific recommendations are provided to encourage future mHealth interventionists and investigators to report on representativeness, settings, delivery agents for planned interventions, the extent to which protocol is delivered as intended, and maintenance of effects at the individual or organizational level.

4α-phorbol 12,13-didecanoate activates cultured mouse dorsal root ganglia neurons independently of TRPV4

BACKGROUND AND PURPOSE

The Ca(2+) -permeable cation channel TRPV4 is activated by mechanical disturbance of the cell membrane and is implicated in mechanical hyperalgesia. Nerve growth factor (NGF) is increased during inflammation and causes mechanical hyperalgesia. 4α-phorbol 12,13-didecanoate (4αPDD) has been described as a selective TRPV4 agonist. We investigated NGF-induced hyperalgesia in TRPV4 wild-type (+/+) and knockout (-/-) mice, and the increases in [Ca(2+) ](i) produced by 4αPDD in cultured mouse dorsal root ganglia neurons following exposure to NGF.

EXPERIMENTAL APPROACH

Withdrawal thresholds to heat, von Frey hairs and pressure were measured in mice before and after systemic administration of NGF. Changes in intracellular Ca(2+) concentration were measured by ratiometric imaging with Fura-2 in cultured DRG and trigeminal ganglia (TG) neurons during perfusion of TRPV4 agonists.

KEY RESULTS

Administration of NGF caused a significant sensitization to heat and von Frey stimuli in TRPV4 +/+ and -/- mice, but only TRPV4 +/+ mice showed sensitization to noxious pressure. 4αPDD stimulated a dose-dependent increase in [Ca(2+) ](i) in neurons from +/+ and -/- mice, with the proportion of responding neurons and magnitude of increase unaffected by the genotype. In contrast, the selective TRPV4 agonist GSK1016790A failed to stimulate an increase in intracellular Ca(2+) in cultured neurons. Responses to 4αPDD were unaffected by pretreatment with NGF.

CONCLUSIONS AND IMPLICATIONS

TRPV4 contributes to mechanosensation in vivo, but there is little evidence for functional TRPV4 in cultured DRG and TG neurons. We conclude that 4αPDD activates these neurons independently of TRPV4, so it is not appropriate to refer to 4αPDD as a selective TRPV4 agonist.

Computerized cognitive remediation training for schizophrenia: an open label, multi-site, multinational methodology study

A recent single-site study (Fisher et al., 2009. Am J Psychiatry. 166 (7) 805-11) showed that repeated training with the Brain Fitness Program (BFP) improved performance on a battery of neuropsychological tasks. If replicated these data suggest an important non-pharmacological method for ameliorating cognitive impairment in schizophrenia. Our study evaluated the BFP training effects in an open-label, multi-site, multinational clinical trial. Fifty-five stable adult patients with schizophrenia on regular antipsychotic medication completed ≥ 32 BFP training sessions over 8-10 weeks. Training effects on cognitive performance and functional capacity outcome measures were measured using CogState® schizophrenia battery, UCSD Performance based Skills Assessment (UPSA-2) and Cognitive Assessment Interview (CAI). BFP training showed a large and significant treatment effect on a training exercise task (auditory processing speed), however this effect did not generalize to improved performance on independent CogState® assessment. There were no significant effects on UPSA-2 or CAI scores. Our study demonstrated the feasibility of implementing BFP training in a multi-site study. However, BFP training did not show significant treatment effects on cognitive performance or functional capacity outcome measures despite showing large and significant effects on a training exercise.

Atherosclerotic lesions in the thoracic aorta: a South African anatomical and histological mortuary study

BACKGROUND

Worldwide, the prevalence of cardiovascular diseases such as atherosclerosis is on the increase. Younger people may be especially vulnerable owing to their exposure to risk factors such as drug abuse and HIV.

METHODS

The thoracic aortas of 149 South Africans under the age of 50 years were collected at the Salt River Mortuary, Cape Town, and examined macroscopically and microscopically for evidence of anomalies. The sample comprised predominantly males, and included black, coloured and white individuals.

RESULTS

A significantly higher level of macroscopic pathology was found in coloured males, although overall prevalence of pathology in this sample was lower than expected. A positive association was also found between body mass index and vascular pathology in the black and coloured population groups. Microscopic anomalies were common and present at high levels, irrespective of age and racial grouping.

CONCLUSIONS

The widespread prevalence of microscopic anomalies in all groups suggests that these are normal variations that result from haemodynamic forces. The higher prevalence of atherosclerotic lesions in coloured males, however, probably results from specific genetic conditions such as hypercholesterolaemia or lifestyle factors such as diet or tik abuse. The findings suggest that coloured individuals may be at increased risk of developing cardiovascular disease.

THE RELATIONSHIP OF THE AGENT OF HEART-WATER FEVER--RICKETTSIA RUMINANTIUM

Sera from sheep which were infected with heartwater fever from 39 to 110 days before the serum was withdrawn failed to fix complement in the presence of lymphogranuloma venereum antigen.