Reducing weight bias and stigma in qualitative research interviews: Considerations for researchers.

Perceptions and biases influence how we interact with and experience the world, including in professional roles as researchers. Weight bias, defined as negative attitudes or perceptions towards people that have large bodies, can contribute to weight stigma and discrimination leading to negative health and social consequences. Weight bias is experienced by people living with obesity in media, health care, education, employment and social settings. In research settings, there is potential for weight bias to impact various aspects of qualitative research including the participant-researcher dynamic in interviews. However, evidence-based strategies to reduce weight bias in qualitative research interviews have yet to be identified. We discuss how weight bias may influence research interviews and identify several considerations and strategies for researchers to minimize the impact of weight bias. Strategies include practicing reflexivity, planning and conducting interviews in ways that support rapport building, using inclusive language, and considering participatory methods.

Review of an international pilot project to adapt the Canadian Adult Obesity Clinical Practice Guideline.

Background: The evidence-based Canadian Adult Obesity Clinical Practice Guideline (CPG) released in August 2020 were developed through a systematic literature review and patient-oriented research process. This CPG is considered a paradigm shift for obesity care as it introduced a new obesity definition that is based on health not body size, incorporates lived experiences of people affected by obesity, and addresses the pervasive weight bias and stigma that patients face in healthcare systems. The purpose of this pilot project was to assess the feasibility of adapting the Canadian CPG in Chile and Ireland. Methods: An International Clinical Practice Guideline Adaptation Committee was established to oversee the project. The project was conducted through four interrelated phases: 1) planning and preparation; 2) pilot project application process; 3) adaptation; and 4) launch, dissemination, and implementation. Ireland used the GRADE-ADAPTE framework and Chile used the GRADE-ADOLOPMENT approach. Results: Chile and Ireland developed their adapted guidelines in one third of the time it took to develop the Canadian guidelines. In Ireland, 18 chapters, which underpin the 80 key recommendations, were contextually adapted. Chile adopted 18 chapters and 76 recommendations, adapted one recommendation, and developed 12 new recommendations.. Conclusion: The pilot project demonstrated it is feasible to adapt the Canadian CPG for use in other countries with different healthcare systems, languages, and cultural contexts, while retaining the Canadian CPG's key principles and values such as the treatment of obesity as a chronic disease, adoption of new clinical assessment approaches that go beyond anthropometric measurements, elimination of weight bias and stigma, shifting obesity care outcomes to improved health and well-being rather than weight loss alone, and the use of patient-centred, collaborative and shared-decision clinical care approaches.

Patient perceptions about obesity management in the context of concomitant care for other chronic diseases.

Background: Approximately 15% of Canadian adults live with two or more chronic diseases, many of which are obesity related. The degree to which Canadian obesity treatment guidelines are integrated into chronic disease management is unknown. Methods: We conducted a 12-min online survey among a non-probability sample of 2506 adult Canadians who met at least one of the following criteria: 1) BMI ≥30 kg/m2; 2) medical diagnosis of obesity; 3) undergone medically supervised treatment for obesity; or 4) a belief that excess/abnormal adipose tissue impairs their health. Participants must have been diagnosed with at least one of 12 prevalent obesity-related chronic diseases. Data analysis consisted of descriptive statistics. Results: One in four (26.4%) reported a diagnosis of obesity, but only 9.2% said they had received medically supervised obesity treatment. The majority (55%) agreed obesity makes managing their other chronic diseases challenging; 39% agreed their chronic disease(s) have progressed or gotten worse because of their obesity. While over half (54%) reported being aware that obesity is classified as a chronic disease, 78% responded obesity was their responsibility to manage on their own. Only 33% of respondents responded they have had success with obesity treatment. Interpretation: While awareness of obesity as a chronic disease is increasing, obesity care within the context of a wider chronic disease management model is suboptimal. More work remains to be done to make Canadian obesity guidelines standard for obesity care.

A scoping review of obesity education interventions for current and prospective medical professionals in Canada.

Background: Obesity is a prevalent chronic disease in Canada. Individuals living with obesity frequently interact with medical professionals who must be prepared to provide evidence-based and person-centred care options. The purpose of this scoping review was to summarize existing educational interventions on obesity in Canada for current and prospective medical professionals and to identify key future directions for practice and research. Methods: A scoping review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews. The search strategy was conducted using Medline (via PubMed), Embase, Eric, CBCA, Proquest Education, and Proquest Theses. The inclusion criteria included delivery of an educational intervention on obesity for current medical professionals, medical undergraduate trainees, or residents administered in Canada. Data were extracted from the included studies to thematically summarize the intervention content, and main outcomes assessed. Future directions for research and practice were identified. Results: Eight studies met the inclusion criteria. The interventions ranged in terms of the mode of delivery, including interactive in-person workshops and seminars, online learning modules, webinars, and videos. The main outcomes assessed were attitudes towards patients living with obesity, self-efficacy for having sensitive obesity-related discussions, skills to assess obesity and provision of management options. All studies reported improvements in the outcomes. Future directions identified were the need to develop standardized obesity competencies for inclusion across medical education programs, further research on effective pedagogical approaches to integrating content into existing curricula and the need for broader awareness and assessment of the quality of obesity education resources. Conclusion: Although there have been few obesity-specific educational interventions for current and prospective medical professionals in Canada, existing evidence shows positive learning outcomes. These findings advocate for continued investment in the development of obesity medical training and educational interventions.

Transforming the landscape of obesity education - The Canadian obesity education competencies.

Background: With ongoing gaps in obesity education delivery for health professions in Canada and around the world, a transformative shift is needed to address and mitigate weight bias and stigma, and foster evidence-based approaches to obesity assessment and care in the clinical setting. Obesity Canada has created evidence-based obesity competencies for medical education that can guide curriculum development, assessment and evaluation and be applied to health professionals' education programs in Canada and across the world. Methods: The Obesity Canada Education Action Team has seventeen members in health professions education and research along with students and patient experts. Through an iterative group consensus process using four guiding principles, key and enabling obesity competencies were created using the 2015 CanMEDS competency framework as its foundation. These principles included the representation of all CanMEDS Roles throughout the competencies, minimizing duplication with the original CanMEDS competencies, ensuring obesity focused content was informed by the 2020 Adult Obesity Clinical Practice Guidelines and the 2019 US Obesity Medication Education Collaborative Competencies, and emphasizing patient-focused language throughout. Results: A total of thirteen key competencies and thirty-seven enabling competencies make up the Canadian Obesity Education Competencies (COECs). Conclusion: The COECs embed evidence-based approaches to obesity care into one of the most widely used competency-based frameworks in the world, CanMEDS. Crucially, these competencies outline how to address and mitigate the damaging effects of weight bias and stigma in educational and clinical settings. Next steps include the creation of milestones and nested Entrustable Professional Activities, a national report card on obesity education for undergraduate medical education in Canada, and Free Open Access Medication Education content, including podcasts and infographics, for easier adoption into curriculum around the world and across the health professions spectrum.

Acceptability and preliminary effectiveness of a single-arm 12-week digital behavioral health intervention in patients with knee osteoarthritis.

BACKGROUND: Digital health interventions may improve osteoarthritis (OA) management. This study evaluated the acceptability and preliminary effectiveness of a multimodal digital nutrition, exercise, and mindfulness intervention in adults with knee OA. METHODS: Adults with advanced knee OA and an orthopaedic referral were invited to self-enroll in a pragmatic 12-week single-arm intervention. OA-focused nutrition and exercise resources were delivered weekly by email, and secondary components accessed on-demand (web-platform, webinars, and nutrition consultation). Acceptability was assessed by qualitative interview data and completion rates. Preliminary effectiveness on clinical outcomes was assessed by change in health-related quality of life, well-being, mindfulness, self-efficacy, and interest in total knee arthroplasty (TKA) between baseline and 12-weeks. RESULTS: N = 102 patients self-enrolled (73.5% female, age 64 ± 7 years, body mass index 32.9 ± 7.3 kg/m2); n = 53 completed the 12-week intervention (71.7% female, age 65 ± 7 years, body mass index 33.4 ± 6.3 kg/m2). Acceptability was demonstrated by positive perceptions of tailored intervention resources. In study completers, health-related quality of life components of pain and physical functioning domains improved at 12-weeks [change in SF36 4.4 (95%CI 0.2-8.6), p = 0.016, and 6.7 (95%CI 2.7-10.7), p < 0.001, respectively]. Self-efficacy for managing daily activities improved [change in PROMIS T-score 4.4 (95%CI 2.8-6.0), p < 0.001]. CONCLUSION: A 12-week digital multimodal intervention for knee OA was acceptable to patients and shows preliminary effectiveness in improving self-efficacy, aspects of quality of life, and decreasing interest in TKA. Digital behavioral interventions for knee OA may be an acceptable approach to improve patient outcomes and OA self-management while potentially reducing utilization of costly health system resources.

Protocol for the POMELO (Prevention Of MusclE Loss in Osteoarthritis) randomized pilot feasibility trial.

Objective: Individuals with advanced knee osteoarthritis (OA) and a large body size [a body mass index (BMI) ≥35 â€‹kg/m2] have a higher risk of complications with total knee arthroplasty (TKA), and hence may be ineligible for surgery unless they reduce their BMI. However, pre-TKA weight-loss has not been shown to reduce surgical infection risk and may inadvertently increase risk for muscle loss and development of sarcopenic obesity (low muscle and low strength with higher fat mass). This suggests that a knee OA management approach that doesn't focus on weight change (weight-neutral) may be beneficial. This study examines if a weight-neutral behavioural intervention is feasible and acceptable to participants, and improves muscle mass and physical function in comparison to usual care. Design: This pilot randomized clinical trial compares a 12-week multimodal intervention [including targeted nutrition, progressive resistance exercise, and arthritis self-management support] to usual care. Co-primary outcomes are feasibility and acceptability, with secondary outcomes of change in lean soft tissue and physical function within and between groups at 3-months and 9-months from baseline. Change in waist circumference, fat mass, blood biomarkers, energy metabolism, OA-related pain and function, health-related quality of life, self-efficacy for arthritis management, and interest in pursuing a TKA within and between groups will be explored. Conclusion: This study will inform future development of more personalized knee OA treatment approaches for adults with larger bodies. Further, this will contribute to effective alternative treatment pathways that reduce inequities in access to OA care for this understudied patient population.

Telephone-based cognitive behavioural therapy for patients with postoperative bariatric surgery to manage COVID-19 pandemic-related mental health issues and distress (TELE-BARICARE): a protocol for a randomised controlled trial.

INTRODUCTION: Bariatric surgery is currently the most effective treatment for obesity, and is performed yearly in over 8000 patients in Canada. Over 50% of those who live with obesity also have a history of mental health disorder. The COVID-19 pandemic has made it difficult for people living with obesity to manage their weight even after undergoing bariatric surgery, which combined with pandemic-related increases in mental health distress, has the potential to adversely impact obesity outcomes such as weight loss and quality of life. Reviews of virtual mental health interventions during COVID-19 have not identified any interventions that specifically address psychological distress or disordered eating in patients with obesity, including those who have had bariatric surgery. METHODS AND ANALYSIS: A randomised controlled trial will be conducted with 140 patients across four Ontario Bariatric Centres of Excellence to examine the efficacy of a telephone-based cognitive behavioural therapy intervention versus a control intervention (online COVID-19 self-help resources) in postoperative bariatric patients experiencing disordered eating and/or psychological distress. Patients will be randomised 1:1 to either group. Changes in the Binge Eating Scale and the Patient Health Questionnaire 9-Item Scale will be examined between groups across time (primary outcomes). Qualitative exit interviews will be conducted, and data will be used to inform future adaptations of the intervention to meet patients' diverse needs during and post-pandemic. ETHICS AND DISSEMINATION: This study has received ethics approvals from the following: Clinical Trials Ontario (3957) and the University Health Network Research Ethics Committee (22-5145), the Board of Record. All participants will provide written informed consent prior to enrolling in the study. Results will be made available to patients with bariatric surgery, the funders, the supporting organisations and other researchers via publication in peer-reviewed journals and conference presentations. TRIAL REGISTRATION NUMBER: NCT05258578.

Psychotherapy Within Occupational Therapy Literature: A Scoping Review.

Background. Recent changes in the Canadian regulatory landscape have prompted reflections on the role and scope of occupational therapy in the provision of psychotherapy. Purpose. To document how psychotherapy has been explored in occupational therapy literature. Method. We conducted a scoping review following Preferred Reporting Items for Systematic Reviews and Meta-Analyses Scoping Review (PRISMA-ScR) guidelines by searching eight databases (e.g., Medline, AMED, CINAHL, EMBASE, PsycINFO, Cochrane Database of Systematic Reviews, Sociological Abstracts, and ProQuest Dissertations & Theses). Articles included at the full-text stage were subjected to a narrative synthesis. Findings. A total of 207 articles met the criteria for inclusion, spanning 93 years. 47.3% of these articles represented non-empirical literature, with only 14% representing effectiveness studies, suggesting that this body of literature remains in an early stage of development. Implications. Occupational therapists have been writing about and practicing psychotherapy for nearly a century, yet there remains an important opportunity to develop and evaluate occupation-based psychotherapy approaches. Effectiveness studies are needed.

Mapping changes in the obesity stigma discourse through Obesity Canada: a content analysis.

BACKGROUND: Stigmatization of persons living with obesity is an important public health issue. In 2015, Obesity Canada adopted person-first language in all internal documentation produced by the organization, and, from 2017, required all authors to use person-first language in abstract submissions to Obesity Canada hosted conferences. The impact of this intentional shift in strategic focus is not known. Therefore, the aim of this study was to conduct a content analysis of proceedings at conferences hosted by Obesity Canada to identify whether or how constructs related to weight bias and obesity stigma have changed over time. METHODS: Of 1790 abstracts accepted to conferences between 2008-2019, we excluded 353 abstracts that featured animal or cellular models, leaving 1437 abstracts that were reviewed for the presence of five constructs of interest and if they changed over time: 1) use of person-first versus use of disease-first terminology, 2) incorporation of lived experience of obesity, 3) weight bias and stigma, 4) aggressive or alarmist framing and 5) obesity framed as a modifiable risk factor versus as a disease. We calculated and analyzed through linear regression: 1) the overall frequency of use of each construct over time as a proportion of the total number of abstracts reviewed, and 2) the ratio of abstracts where the construct appeared at least once based on the total number of abstracts. RESULTS: We found a significant positive correlation between use of person-first language in abstracts and time (R2 = 0.51, p < 0.01 for frequency, R2 = 0.65, p < 0.05 for ratio) and a corresponding negative correlation for the use of disease-first terminology (R2 = 0.48, p = 0.01 for frequency, R2 = 0.75, p < 0.001 for ratio). There was a significant positive correlation between mentions of weight bias and time (R2 = 0.53 and 0.57, p < 0.01 for frequency and ratio respectively). CONCLUSION: Use of person-first language and attention to weight bias increased, while disease-first terminology decreased in accepted abstracts over the past 11 years since Obesity Canada began hosting conferences and particularly since more explicit actions for expectations to use person-first language were put in place in 2015 and 2017.

"It's not a simple answer." A qualitative study to explore how healthcare providers can best support families with a child with autism spectrum disorder and overweight or obesity.

PURPOSE: This qualitative study aimed to explore the experiences of parents supporting their child with Autism Spectrum Disorder (ASD) and overweight or obesity (OW/OB), including their weight management support needs. METHODS: Interview transcripts were analysed using inductive thematic analysis. Nine parents (n = 9 mothers) of ten children with ASD (7 males, 3 females) participated in individual semi-structured interviews. RESULTS: The three themes developed were: (1) Our journey to obtain weight management support; (2) I need real-world solutions; and (3) The what, who and how of our weight management needs. Parents reported being proactive in seeking weight management support for their child but were disappointed with the services offered. Resources were not tailored to the child's complex nutrition and behavioural issues or their abilities and functioning. A multidisciplinary approach that integrated both disability and weight management expertise was desired, but not experienced. A range of formal and informal programs were recommended. CONCLUSION: This study provides a call to action for supports that ensure children with ASD and OW/OB receive integrated, individualised support to maximise their health and wellness.Implications for rehabilitationChildren with autism spectrum disorder (ASD) are at high risk of developing overweight or obesity.The weight management support needs of parents of children with ASD and overweight or obesity are not being met.Support must be tailored to the child's needs, which are often complex.Health services that integrate expertise in both disability and weight management are needed for children with ASD and their families.

Patient engagement in the design of an intervention to prevent muscle loss in individuals with knee osteoarthritis and a body mass index (BMI) ≥ 35.

OBJECTIVE: Interventions for knee osteoarthritis (OA) in adults with a large body size (defined as a body mass index [BMI] ≥ 35 kg/m2 ) often prioritise weight-loss, which may overshadow specific benefits for physical function, metabolic health, and body composition. As part of the development of a future clinical study, we gathered perspectives from individuals living with knee OA and a large body size to inform the proposed intervention design and delivery. METHODS: Purposive and voluntary sampling was used to engage individuals ≥40 years of age with self-reported knee OA and a BMI ≥ 35 kg/m2 . An anonymous electronic survey was distributed on social media between April 2020 and June 2020. Open-ended questions addressed a proposed 12-week multimodal intervention (involving targeted nutrition, resistance exercises, and self-management support). An optional semi-structured interview was offered upon completion, with interviews recorded and transcribed verbatim. Reflexive thematic analysis and interpretation guided by an acceptability framework was used to identify recommendations for the intervention design and delivery. RESULTS: Twenty individuals living across Canada completed the survey (100% female; 18 aged <65 years and 2 ≥ 65 years). Ten individuals completed the interview. From aggregate survey and interview data, three recommendations were generated: (1) the effectiveness of the intervention for health improvement (specifically mobility and pain) must be emphasised to avoid perceived weight-loss expectations; (2) extend support beyond 12-weeks and consider terminology free from weight-bias to enhance acceptance; (3) include optional customisation of intervention delivery to reduce acceptability-related burden. CONCLUSION: These female patient-derived recommendations may improve perceived intervention acceptability, and thereby may enhance participant enrolment and retention in clinical trials.

The use of digital storytelling of patients' stories as an approach to translating knowledge: a scoping review.

BACKGROUND: A growing interest has centered on digital storytelling in health research, described as a multi-media presentation of a story using technology. The use of digital storytelling in knowledge translation (KT) is emerging as technology advances in healthcare to address the challenging tasks of disseminating and transferring knowledge to key stakeholders. We conducted a scoping review of the literature available on the use of patient digital storytelling as a tool in KT interventions. METHODS: We followed by Arksey and O'Malley (Int J Soc Res Methodol 8(1):19-32, 2005), and Levac et al. (Implement Sci 5(1):69, 2010) recommended steps for scoping reviews. Search strategies were conducted for electronic databases (Medline, CINAHL, Web of Science, ProQuest dissertations and theses global, Clinicaltrials.gov and Psychinfo). The Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews (PRISMA-ScR) was used to report the review process. RESULTS: Of 4656 citations retrieved, 114 full texts were reviewed, and twenty-one articles included in the review. Included studies were from nine countries and focused on an array of physical and mental health conditions. A broad range of interpretations of digital storytelling and a variety of KT interventions were identified. Digital storytelling was predominately defined as a story in multi-media form, presented as a video, for selective or public viewing and used as educational material for healthcare professionals, patients and families. CONCLUSION: Using digital storytelling as a tool in KT interventions can contribute to shared decision-making in healthcare and increase awareness in patients' health related experiences. Concerns centered on the accuracy and reliability of some of the information available online and the impact of digital storytelling on knowledge action and implementation.

Digital storytelling is a multi-media presentation of a story, often in the form of a narrated video. The use of digital storytelling of patient experiences with healthcare has gained attention in recent years, as a tool for sharing and understanding information among patients, caregivers, healthcare professionals and policy makers. A summary of the findings reported in studies looking at digital storytelling as a way of sharing information in healthcare is needed.We searched literature that included the use of digital storytelling of patients' healthcare experiences as a means of sharing and translating information, also referred to as knowledge translation or knowledge mobilization. There were 21 studies found from nine countries that used digital stories to look at experiences related to different physical and mental health conditions. A broad range of interpretations of digital storytelling and a variety of knowledge translation approaches were identified. The most common use of patients' digital stories was educational material for healthcare professionals and other patients.Using digital storytelling to translate knowledge can contribute to patients, caregivers, healthcare professionals and policy makers sharing the best available evidence when faced with making a health decision. Digital storytelling can help us understand patients' health related experiences. Further work is needed to test the accuracy and reliability of some online information and how to best measure the impact of digital storytelling on knowledge translation activities.

Associations Between Self-Reported Weight History and Sarcopenic Obesity in Adults with Knee Osteoarthritis.

OBJECTIVE: The purpose of this study was to examine associations between self-reported weight history and sarcopenic obesity in adults with advanced knee osteoarthritis (OA). METHODS: Self-reported weight history was collected from n = 151 adults (58.9% female) with knee OA and BMI ≥30 kg/m2 in a cross-sectional study. Body composition was assessed using dual-energy x-ray absorptiometry. Sarcopenic obesity was defined as appendicular skeletal muscle mass, adjusted by BMI, <0.51 kg/m2 in females and <0.79 kg/m2 in males; prevalence was 27.2%. Weight gain in the preceding year, weight gain ≥5% of body weight in the past decade, and multiple weight cycling events in life-span (loss of ≥10 lb [4.5 kg] with regain ≥3 times) were examined using logistic regression (adjusted by age, sex, and %fat mass), with the dependent variable of sarcopenic obesity presence. RESULTS: Weight gain in the preceding year was associated with sarcopenic obesity (odds ratio [OR]: 2.45, 95% CI: 1.02-5.87). No associations were found with weight gain in the past decade (OR: 1.04, 95% CI: 0.43-2.5) or weight cycling (OR: 0.86, 95% CI: 0.37-2.01). CONCLUSIONS: In adults with obesity and advanced knee OA, self-reported weight gain in the preceding year was associated with sarcopenic obesity. This patient population may benefit from recommendations that prioritize prevention of weight gain.

Addressing weight bias and stigma of obesity amongst physiotherapists.

Backgound: Physiotherapists, as with all other healthcare professionals, report attitudes toward patients with obesity and beliefs about obesity that contribute to weight bias and stigma. Objectives: Determine if physiotherapists' attitudes and/or beliefs changed after attending an educational seminar that included content about the challenges faced by patients with obesity undergoing joint replacement and strategies on how to work effectively and sensitively with this population.Methods: Physiotherapists completed a survey before and after attending a one day seminar to evaluate attitudes (The Attitude Towards Obese Persons, ATOP) and beliefs (Beliefs About Obese Persons, BAOP) towards obesity. To provide a reference, the seminar group's attitudes and beliefs were compared to a provincial cohort of 383 physiotherapists who completed the online version of the survey.Results: The pre-seminar mean ATOP score (71.3 ± 19.3) was similar to the online mean score (72.6 ± 15.3) (p = .66). The post-seminar ATOP score decreased (63.6 ± 15.9) (p = .02) indicating greater negative attitudes. The mean difference of the seminar BAOP showed a modest increase (mean difference 4.6, p = .001) indicating that participants believed obesity was less in control of the individual.Conclusions: Seminar information presented by respected and trusted leaders did not challenge participants' implicit attitudes and beliefs towards obesity. Further evaluation of theory-driven approaches specifically targeting physiotherapists is needed to address stigmatization within the profession.

A critical review of weight loss recommendations before total knee arthroplasty.

OBJECTIVE: Increased infection risk after total knee arthroplasty (TKA) in patients with a higher body mass index (BMI), particularly a BMI ≥40kg/m2, suggests that BMI reduction (through weight loss) prior to TKA may be important. However, the impact of weight loss on TKA risk reduction is unclear. Furthermore, weight loss could have detrimental consequences with respect to muscle loss and development of sarcopenic obesity, whereby a potential weight loss paradox in adults with advanced knee OA and obesity may be present. Using a critical review approach, we examined the current evidence supporting weight loss in adults with obesity and advanced knee osteoarthritis (OA). We focused on three key areas: (1) TKA complication risk with severe obesity compared to obesity (BMI ≥40kg/m2 versus 30.0-39.9kg/m2); (2) weight loss recommendations for individuals with advanced knee OA; and (3) TKA outcomes after pre-surgical weight loss. METHODS: Medline and CINAHL databases were examined from Jan 2010 to May 2020 to identify high-level and/or clinically-influential evidence (systematic reviews, meta-analyses and clinical practice guidelines). RESULTS: The literature does not show a clear relationship between weight loss and reduction in TKA complications, and no indication that a patients' individual risk is lowered by reducing their BMI from a threshold of ≥40kg/m2 to ≤39.9kg/m2. Studies that have found a benefit of weight loss for knee OA have not included patients with higher BMIs (≥40kg/m2) or more advanced knee OA. Furthermore, there is unclear evidence of a benefit of pre-surgical weight loss on TKA outcomes. These are important evidence gaps, suggesting that recommendations for BMI reduction prior to TKA should be tempered by the current uncertainty in the literature. CONCLUSION: Evidence to support a benefit of weight loss prior to TKA is lacking. Until knowledge gaps are clarified, it is recommended that practitioners consider individual patient needs and risk before recommending weight loss (and therefore BMI reduction).

Clinical screening and identification of sarcopenic obesity in adults with advanced knee osteoarthritis.

BACKGROUND AND AIMS: Sarcopenic obesity (defined as low muscle mass and strength with high adiposity) requires attention in adults with advanced knee osteoarthritis (OA) due to implications on treatment outcomes. This study aimed to identify muscle function measures and patient characteristics associated with the presence of low muscle mass that could be used to screen and detect sarcopenic obesity in patients with knee OA in the clinical setting. METHODS: Cross-sectional study of patients with knee OA and a body mass index (BMI) ≥30 kg/m2. Body composition was measured in n = 151 patients (59% female, mean age 65.1 ± 7.9 years) using dual-energy x-ray absorptiometry. Appendicular skeletal muscle mass (ASM) adjusted by BMI and below established sex-specific cut-points was used to differentiate low muscle mass. Muscle function was assessed by 4-m gait speed, 6 min walk test, and maximal grip strength (absolute, and relative, adjusted by BMI). Logistic regression was used to assess the relationship between muscle function measures, patient characteristics, and low muscle mass. Receiver operating characteristic curves and area under the curve (AUC) were used to examine the final model and identify potential clinical cut-points. RESULTS: Sex and relative grip strength were associated with low muscle mass (AUC 0.774, p < 0.001). Cut-points for low relative grip strength (<0.65 kg/m2 in females and <1.1 kg/m2 in males) were distinguished and used in combination with low muscle mass to screen and identify sarcopenic obesity. Patients with both low relative grip strength and low muscle mass (sarcopenic obesity) had impaired mobility and quality of life. CONCLUSION: Relative grip strength shows promise as a clinical screening measure for sarcopenic obesity in patients with knee OA.

Obesity in adults: a clinical practice guideline

Obesity is a complex chronic disease in which abnormal or excess body fat (adiposity) impairs health, increases the risk of long-term medical complications and reduces lifespan.1 Epidemiologic studies define obesity using the body mass index (BMI; weight/height2), which can stratify obesity-related health risks at the population level. Obesity is operationally defined as a BMI exceeding 30 kg/m2 and is subclassified into class 1 (30­34.9), class 2 (35­39.9) and class 3 (≥ 40). At the population level, health complications from excess body fat increase as BMI increases.2 At the individual level, complications occur because of excess adiposity, location and distribution of adiposity and many other factors, including environmental, genetic, biologic and socioeconomic factors.