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Everitt JD, Battista-Dowds EM, Heggs D, Hewlett P, Squire ALM. Determinants of completion and early dropout in an adult weight management service: a prospective observational study. J Hum Nutr Diet 2023; 36:1931-1941. [PMID: 37357716 DOI: 10.1111/jhn.13196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 06/05/2023] [Indexed: 06/27/2023]
Abstract
BACKGROUND High attrition rates in weight management interventions (WMIs) undermine their effectiveness but are poorly understood. This study aimed to identify determinants of completion and early dropout in National Health Service (NHS) WMIs. METHODS In this prospective observational study, 329 patients recruited at initial consultation appointments satisfied the eligibility criteria: age ≥18 years and body mass index (BMI) ≥30 kg/m2 . Multivariate logistic regression analyses were performed to identify the odds ratios (OR, given with 95% confidence interval) of completion and early dropout. RESULTS Intervention completion rate was 39.8% (131 of 329). Variables that increased the likelihood of completion included engagement in support sessions, OR10.6 (4.7-23.6, p < 0.001); male sex, OR2.5 (1.4-4.5, p = 0.002); osteoarthritis, OR1.9 (1.1-3.3, p = 0.014); and one or more missed intervention appointments marked as 'could not attend' (notified nonattendance), OR1.8 (1.1-2.9, p = 0.032). Odds of early dropout were higher for participants with anxiety and depression OR2.0 (1.0-4.0, p = 0.039). Dietetic 1:1 participants were less likely to drop out early compared with group programme participants, OR0.3 (0.2-0.7, p = 0.002), but were less likely to complete the full intervention, OR0.5 (0.3-0.9, p = 0.02). Age, BMI, social deprivation and travel distance were among the variables not associated with completion or early dropout. CONCLUSIONS This study provides further evidence of the importance of support for participants of WMIs and the need for services to consider how support networks can be incorporated. Patients with poorer mental health may be more likely to drop out early and consequently benefit less from WMIs. Future research should qualitatively explore why these factors contribute to attrition to improve WMI effectiveness.
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Affiliation(s)
| | - Enzo M Battista-Dowds
- Weight Management Service, Nutrition and Dietetics Department, Cwm Taff Morgannwg University Health Board, Merthyr Tydfil, Wales, UK
| | - Daniel Heggs
- Department of Applied Psychology, School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, Wales, UK
| | - Paul Hewlett
- Department of Applied Psychology, School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, Wales, UK
| | - Amanda L M Squire
- Department of Healthcare and Food, School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, Wales, UK
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Jongenelis MI, Jackson B, Newton RU, Pettigrew S. Longitudinal associations between formal volunteering and well-being among retired older people: follow-up results from a randomized controlled trial. Aging Ment Health 2022; 26:368-375. [PMID: 33571004 DOI: 10.1080/13607863.2021.1884845] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Volunteering has been identified as a potential mechanism for improving the psychosocial health of older adults. Utilizing a randomized controlled trial approach, the present study assessed the extent to which commencing volunteering can improve psychosocial health outcomes for older people. Fully retired Australian adults aged 60+ years (N= 445) were assessed at baseline and allocated to either the intervention or control arms of the trial. Those in the intervention condition were asked to participate in at least 60 min of formal volunteering per week for 6 months. Per-protocol analyses were conducted comparing psychosocial outcomes for those who complied with the intervention condition (n= 73) to outcomes for those who complied with the control condition (n= 112). Those who complied with the intervention condition demonstrated significant improvements in life satisfaction, purpose in life, and personal growth scores over a 12-month period relative to those in the control condition who did no volunteering. Findings provide evidence of a causal relationship between commencing volunteering and improvements in psychosocial health among older adults and indicate that encouraging participation in this activity could constitute an effective healthy aging intervention.
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Affiliation(s)
- Michelle I Jongenelis
- Melbourne Centre for Behaviour Change, Melbourne School of Psychological Sciences, University of Melbourne, Parkville, Australia
| | - Ben Jackson
- School of Human Sciences (Exercise and Sports Science), University of Western Australia, Crawley, Australia
| | - Robert U Newton
- cSchool of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
| | - Simone Pettigrew
- The George Institute for Global Health, Newtown, Australia.,eSchool of Public Health and Community Medicine, University of New South Wales, Kensington, Australia
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Predictors of attrition from a weight loss program. A study of adult patients with obesity in a community setting. Eat Weight Disord 2021; 26:1729-1736. [PMID: 32816208 PMCID: PMC8292291 DOI: 10.1007/s40519-020-00990-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 08/11/2020] [Indexed: 11/15/2022] Open
Abstract
PURPOSE Obesity unit attrition is frequent and contributes to treatment failure. Many studies evaluating attrition predictors were part of randomized trials, and different terminology and criteria were used in the engagement field. We aimed to investigate the factors potentially implicated in early (< 12 weeks) and late (> 12 weeks) attrition from an obesity unit in a community setting METHODS: This was a retrospective cohort study of 250 patients with obesity who were followed-up at our obesity unit. Our program included at least 6 meetings in 12 months. Sociodemographic and anthropometric data, and psychometric questionnaires were collected from all participants. RESULTS One-hundred thirty-four (53.6%) participants dropped out. Those individuals showed lower BMI, lower overall health status, and increased depression scores. In a multiple regression model, BMI (inversely; OR = 0.90; 95%CI 0.84-0.96) and depression score (directly, OR = 1.05; 1.00-1.10) were associated with attrition risk. Early dropouts (n = 47) had lower weights, smaller waist circumferences and worse mental health scores than late dropouts (n = 87) and more frequently lived alone. When compared to completers, early dropouts had lower weights, BMIs, waist circumferences, overall health and mental status scores, increased depression scores and percentage of individuals living alone. In a multiple regression, lower BMI (OR = 0.83; 0.75-0.92), lower mental status score (OR = 3.17; 1.17-8.59) and living alone (OR = 2.25; 1.02-4.97) were associated with early attrition risk. CONCLUSION Lower BMI and increased depression score were associated with attrition. Early attrition was associated with lower weight, decreased mental well-being, and living alone. Individuals with these characteristics might need tailored approaches to enhance their engagement. LEVEL OF EVIDENCE Level V, retrospective descriptive study.
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Cannon MJ, Masalovich S, Ng BP, Soler RE, Jabrah R, Ely EK, Smith BD. Retention Among Participants in the National Diabetes Prevention Program Lifestyle Change Program, 2012-2017. Diabetes Care 2020; 43:2042-2049. [PMID: 32616617 PMCID: PMC11000538 DOI: 10.2337/dc19-2366] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 04/28/2020] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To assess retention in the National Diabetes Prevention Program (DPP) lifestyle change program, which seeks to prevent type 2 diabetes in adults at high risk. RESEARCH DESIGN AND METHODS We analyzed retention among 41,203 individuals who enrolled in Centers for Disease Control and Prevention (CDC)-recognized in-person lifestyle change programs at organizations that submitted data to CDC's Diabetes Prevention Recognition Program during January 2012-February 2017. RESULTS Weekly attrition rates were typically <1-2% but were between 3.5% and 5% at week 2 and at weeks 17 and 18, where session frequency typically transitions from weekly to monthly. The percentage of participants retained through 18 weeks varied by age (45.9% for 18-29 year olds, 53.4% for 30-44 year olds, 60.2% for 45-54 year olds, 66.7% for 55-64 year olds, and 67.6% for ≥65 year olds), race/ethnicity (70.5% for non-Hispanic whites, 60.5% for non-Hispanic blacks, 52.6% for Hispanics, and 50.6% for other), mean weekly percentage of body weight lost (41.0% for ≤0% lost, 66.2% for >0% to <0.25% lost, 72.9% for 0.25% to <0.5% lost, and 73.9% for ≥0.5% lost), and mean weekly physical activity minutes (12.8% for 0 min, 56.1% for >0 to <60 min, 74.8% for 60 to <150 min, and 82.8% for ≥150 min) but not by sex (63.0% for men and 63.1% for women). CONCLUSIONS Our results demonstrate the need to identify strategies to improve retention, especially among individuals who are younger or are members of racial/ethnic minority populations and among those who report less physical activity or less early weight loss. Strategies that address retention after the first session and during the transition from weekly to monthly sessions offer the greatest opportunity for impact.
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Affiliation(s)
- Michael J Cannon
- Translation, Health Education, and Evaluation Branch, Division of Diabetes Translation, Centers for Disease Control and Prevention, Atlanta, GA
| | | | - Boon Peng Ng
- College of Nursing and Disability, Aging and Technology Cluster, University of Central Florida, Orlando, FL
| | - Robin E Soler
- Translation, Health Education, and Evaluation Branch, Division of Diabetes Translation, Centers for Disease Control and Prevention, Atlanta, GA
| | | | - Elizabeth K Ely
- Translation, Health Education, and Evaluation Branch, Division of Diabetes Translation, Centers for Disease Control and Prevention, Atlanta, GA
| | - Bryce D Smith
- Translation, Health Education, and Evaluation Branch, Division of Diabetes Translation, Centers for Disease Control and Prevention, Atlanta, GA
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Perna S, Spadaccini D, Riva A, Allegrini P, Edera C, Faliva MA, Peroni G, Naso M, Nichetti M, Gozzer C, Vigo B, Rondanelli M. A path model analysis on predictors of dropout (at 6 and 12 months) during the weight loss interventions in endocrinology outpatient division. Endocrine 2018; 61:447-461. [PMID: 29470776 DOI: 10.1007/s12020-018-1563-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 02/04/2018] [Indexed: 02/07/2023]
Abstract
INTRODUCTION This study aimed to identify the dropout rate at 6 and 12 months from the first outpatient visit, and to analyze dropout risk factors among the following areas: biochemical examinations, anthropometric measures, psychological tests, personal data, and life attitude such as smoking, physical activity, and pathologies. METHODS This is a retrospective longitudinal observational study. Patients undergo an outpatient endocrinology visit, which includes collecting biographical data, anthropometric measurements, physical and pathological history, psychological tests, and biochemical examinations. RESULTS The sample consists of 913 subjects (682 women and 231 men), with an average age of 50.88 years (±15.80) for the total sample, with a BMI of 33.11 ± 5.65 kg/m2. 51.9% of the patients abandoned therapy at 6 months after their first visit, and analyzing the dropout rate at 12 months, it appears that 69.5% of subjects abandon therapy. The main predictor of dropout risk factors at 6 and 12 months is the weight loss during the first 3 months (p < 0.05). As regards the hematological predictors, white blood cell and iron level stated dropout at 12 months. Patients who introduced physical activity had a reduction of - 17% (at 6 months) and -13% (at 12 months) of dropout risk (p < 0.05). As regards the "worker" status, patients classified as"retired" had a decrease risk of dropout vs. other categories of worker (i = 0.58; p < 0.05). Dropout risk at 12 months decrease in patients with a previous history of cancer, Endocrine and psychic and behavioral disorders (p < 0.001). CONCLUSIONS The main factor that predisposes patients to continue therapy or to abandon it is the success (or failure) of the diet in the initial period, based on weight lost (or not lost) in the early months of the initiation of therapy. Furthermore, considerable differences were found in different categories of "workers", and with previous "pathologies". The level of physical activity and previous diseases also seem to be predictors of dropout.
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Affiliation(s)
- Simone Perna
- Department of Public Health, Experimental and Forensic Medicine, Section of Human Nutrition, Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona, University of Pavia, Pavia, Italy.
| | - Daniele Spadaccini
- Department of Public Health, Experimental and Forensic Medicine, Section of Human Nutrition, Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona, University of Pavia, Pavia, Italy
| | | | | | - Chiara Edera
- Department of Public Health, Experimental and Forensic Medicine, Section of Human Nutrition, Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona, University of Pavia, Pavia, Italy
| | - Milena Anna Faliva
- Department of Public Health, Experimental and Forensic Medicine, Section of Human Nutrition, Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona, University of Pavia, Pavia, Italy
| | - Gabriella Peroni
- Department of Public Health, Experimental and Forensic Medicine, Section of Human Nutrition, Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona, University of Pavia, Pavia, Italy
| | - Maurizio Naso
- Department of Public Health, Experimental and Forensic Medicine, Section of Human Nutrition, Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona, University of Pavia, Pavia, Italy
| | - Mara Nichetti
- Department of Public Health, Experimental and Forensic Medicine, Section of Human Nutrition, Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona, University of Pavia, Pavia, Italy
| | - Carlotta Gozzer
- Department of Public Health, Experimental and Forensic Medicine, Section of Human Nutrition, Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona, University of Pavia, Pavia, Italy
| | - Beatrice Vigo
- Department of Public Health, Experimental and Forensic Medicine, Section of Human Nutrition, Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona, University of Pavia, Pavia, Italy
| | - Mariangela Rondanelli
- Department of Public Health, Experimental and Forensic Medicine, Section of Human Nutrition, Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona, University of Pavia, Pavia, Italy
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Parkinson L, Waters DL, Franck L. Systematic review of the impact of osteoarthritis on health outcomes for comorbid disease in older people. Osteoarthritis Cartilage 2017; 25:1751-1770. [PMID: 28710026 DOI: 10.1016/j.joca.2017.07.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 05/28/2017] [Accepted: 07/05/2017] [Indexed: 02/02/2023]
Abstract
OBJECTIVE A systematic review was undertaken examining the impact of comorbid osteoarthritis on health outcomes for people aged 50 years or older with cardiovascular disease, diabetes or obesity. DESIGN The protocol is registered in PROSPERO (CRD42015023417). Relevant electronic databases and grey literature were systematically searched for studies published in English between January 2005 and December 2016. Two reviewers independently screened studies for selection using predetermined inclusion and exclusion criteria, and independently completed methodological quality review. Data was extracted at study level by one reviewer and independently checked by a second reviewer, using a standardized form. The results across studies were qualitatively synthesized with outcomes described and summarized. RESULTS Of 1456 articles, we identified 15 relevant studies, with nine good to high quality studies describing significant negative impact of osteoarthritis on outcomes for cardiovascular diseases. There were too few studies focussing on diabetes and obesity to make conclusions in regard to these diseases. CONCLUSIONS This review provides evidence that osteoarthritis should not be overlooked when impacts of chronic disease on health outcomes and related health service use are considered. There is a clear need for more studies that consider the impacts of osteoarthritis on comorbid disease, especially those that consider the impact of osteoarthritis beyond the morbidity impacts. The management of comorbid osteoarthritis should be addressed for those with cardiovascular disease, and treatment choices considered given this association.
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Affiliation(s)
- L Parkinson
- Central Queensland University, Rockhampton, Australia.
| | - D L Waters
- University of Otago, Dunedin, New Zealand
| | - L Franck
- Central Queensland University, Rockhampton, Australia
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Abstract
BACKGROUND Overweight and obesity are becoming more and more relevant for armed forces in westernized countries, especially with respect to the impact on recruitment and soldiers' performance. The German Armed Forces have been organizing a Military Obesity Intervention Program (OIP) in Warendorf, Germany, since 2001. In addition to the existing outpatient program, a course version was offered. This course version is of interest since it offers a potential alternative to outpatient programs. OBJECTIVE To analyse the results obtained from the course version of the OIP and comparing these to other OIPs. METHODS Retrospective analysis of the course version of the OIP, starting in 2001, based on an intention-to-treat analysis. RESULTS 334 participants showed significant improvement (p < 0.05) in bodyweight (-3.4±6.6 kg), body mass index (-1.0±2.0 kg/m2), waist circumference (-3.8±6.4 cm), systolic and diastolic blood pressure (-5.6±18.0/-3.3±12.8 mm Hg), physical capacity (+11.4±32.6 Watt), total cholesterol (-0.16±0.94 mmol/l), HDL (+0.04±0.23 mmol/l), LDL (-0.16±0.80 mmol/l), uric acid (-31.2±69.3 μmol/l) and hemoglobin A1c (-0.13±0.52%). The entire OIP course was completed by 180 participants (53.9%). 27.5% of all 334 participants had reduced their body weight by 5% or more during their participation in the OIP. CONCLUSIONS In this specific OIP only a small number of obese patients reduced their bodyweight, even though the examined parameters improved significantly. Therefore, greater efforts need to be undertaken in order to prevent overweight and obesity in the military in addition to the implemented obesity intervention programs.
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Affiliation(s)
- Stefan Sammito
- Bundeswehr Medical Service Headquarters -Section Military Medical Research, Koblenz, Germany.,Occupational Medicine, Faculty of Medicine, Otto-von-Guericke-University of Magdeburg, Magdeburg, Germany
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Jiandani D, Wharton S, Rotondi MA, Ardern CI, Kuk JL. Predictors of early attrition and successful weight loss in patients attending an obesity management program. BMC OBESITY 2016; 3:14. [PMID: 26966544 PMCID: PMC4784380 DOI: 10.1186/s40608-016-0098-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 03/04/2016] [Indexed: 11/10/2022]
Abstract
Background Our objective was to identify factors that are independently associated with early attrition and successful weight loss (WL) in an obesity-management program. Methods Participants were 9,498 patients enrolled in treatment at the Wharton Weight Management Clinic for at least 6 months. Predictors of early attrition (<6 months) and successful WL (≥5 %) were analyzed using relative risk (RR) in men and women separately. Pearson’s correlation was used to determine the relationship between WL and treatment time Weight loss and attrition analysis was restricted to patients who had more than two visits (n = 5415). Results Older individuals had lower early attrition (RR Range:0.74–0.92, P < 0.05) and greater WL success (RR Range:1.40–1.65, P < 0.05) than younger individuals. Males with hypertension and females with depression had greater early attrition (RR Range:1.09–1.20, P < 0.05) and lower WL success (RR Range:0.48–0.57, P < 0.05) than those without these health conditions. Males with lower education had greater early attrition (RR = 1.11[1.03–1.19]) than males with higher education, but did not differ in WL. Females who smoked had greater early attrition (RR = 1.06[1.01–1.11]) than females who did not smoke, but did not differ in WL. Ethnicity was not related to early attrition, however, females of Black and Other ethnicities had lower WL success compared to White females (RR Range:0.58–0.74, P < 0.05). After adjusting for treatment time, all above associations were no longer significant and treatment time remained as the only independent predictor of WL success (P < 0.0001). Conclusion As WL is positively and independently related with treatment time, individuals at risk for early attrition may need alternative treatment options, in order to improve patient retention and improve WL success.
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Affiliation(s)
- Dishay Jiandani
- School of Kinesiology and Health Science, York University, Toronto, Canada
| | - Sean Wharton
- School of Kinesiology and Health Science, York University, Toronto, Canada ; The Wharton Weight Management Clinic, Toronto, Canada
| | - Michael A Rotondi
- School of Kinesiology and Health Science, York University, Toronto, Canada
| | - Chris I Ardern
- School of Kinesiology and Health Science, York University, Toronto, Canada
| | - Jennifer L Kuk
- School of Kinesiology and Health Science, York University, Toronto, Canada ; Room 2002B, Sherman Health Science Research Centre, York University, 4700 Keele St., Toronto, ON M3J 1P3 Canada
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Lederhuber H, Axer S, Ihle C. Case report: rare case of mechanical bowel obstruction due to strangulation by gastric stimulator electrodes. BMC Surg 2015; 15:35. [PMID: 25881095 PMCID: PMC4381395 DOI: 10.1186/s12893-015-0022-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 03/18/2015] [Indexed: 12/12/2022] Open
Abstract
Background Implantation of a gastric stimulator is a feasible surgical therapy for patients with therapy refractory gastroparesis. In addition it seems to be a promising alternative for treating morbid obesity. We present for the first time the surgical emergency of small bowel obstruction due to strangulation by gastric stimulator electrodes. Case presentation A 59-year-old Caucasian female had undergone implantation of a gastric stimulator to cope with the symptoms of a partial gastroparesis. Eight years after the operation, the patient began to present repeatedly to different hospitals because of abdominal pain and nausea. Symptoms and imaging indicated ileus, which could always be treated conservatively. The underlying pathology could not ultimately be determined and the symptoms were eventually considered gastroparesis-related. After two years the patient was finally referred in circulatory shock due to peritonitis with underlying small bowel obstruction. Emergency laparotomy revealed small bowel strangulation by the gastric stimulator electrodes. Conclusion Repeated presentation of a patient with an unfamiliar treatment modality must raise suspicion of unusual complications. Specialist surgeons treating with innovative methods should provide proper information that is accessible to everyone who might have to treat possible complications.
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Affiliation(s)
- Hans Lederhuber
- Department of General Surgery, Torsby Hospital, Värmland County Council, Lasarättsvägen 8, 68529, Torsby, Sweden.
| | - Stephan Axer
- Department of General Surgery, Torsby Hospital, Värmland County Council, Lasarättsvägen 8, 68529, Torsby, Sweden
| | - Christof Ihle
- Department of General Surgery, Torsby Hospital, Värmland County Council, Lasarättsvägen 8, 68529, Torsby, Sweden
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Gatterer H, Haacke S, Burtscher M, Faulhaber M, Melmer A, Ebenbichler C, Strohl KP, Högel J, Netzer NC. Normobaric Intermittent Hypoxia over 8 Months Does Not Reduce Body Weight and Metabolic Risk Factors--a Randomized, Single Blind, Placebo-Controlled Study in Normobaric Hypoxia and Normobaric Sham Hypoxia. Obes Facts 2015; 8:200-9. [PMID: 26008855 PMCID: PMC5644878 DOI: 10.1159/000431157] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 03/02/2015] [Indexed: 01/22/2023] Open
Abstract
OBJECTIVE Both a 1- to 4-week continuous or intermittent stay and moderate exercise in hypoxia versus normoxia can lead to weight loss. We examined the reproducibility and durability of added hypoxic exposure in a feasible health program of several months. METHODS 32 obese persons, randomly assigned to either a hypoxia (age 50.3 ± 10.3 years, BMI 37.9 ± 8.1 kg/m(²)) or a normoxia (age 52.4 ± 7.9 years, BMI 36.3 ± 4.0 kg/m(²)) group, completed 52 exercise sessions within 8 months. Participants exercised for 90 min (65-70% HR(peak)) either at a simulated altitude of 3,500 m or in normoxia, and rested for further 90 min at 4,500 m or normoxia. Before, after 5 weeks, after 3 months, and after the intervention, body composition and exercise capacity were determined. Risk markers (e.g., blood pressure, cholesterol) were measured before, after 3 months, and after the intervention period. RESULTS Body weight, BMI, waist and hip circumference, P(peak) and BP(sys) improved over time (p < 0.05) but without group difference. Fat mass reductions correlated with HDL changes (r = -0.427; p < 0.05) in the entire group. CONCLUSION Long-term, moderate intensity exercise and rest in hypoxia does not lead to higher reductions in body weight than normoxia alone. Therefore, for weight loss and metabolic markers hypoxic exposure does not add effects at least when stimuli (i.e., hypoxia dose, exercise intensity/duration) are unaltered throughout the intervention.
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Affiliation(s)
- Hannes Gatterer
- Department of Sport Science, Medical Section, University Innsbruck, Innsbruck, Austria
- *Dr. Hannes Gatterer, Department Sport Science, University Innsbruck, Fürstenweg 185, 6020 Innsbruck, Austria,
| | | | - Martin Burtscher
- Department of Sport Science, Medical Section, University Innsbruck, Innsbruck, Austria
| | - Martin Faulhaber
- Department of Sport Science, Medical Section, University Innsbruck, Innsbruck, Austria
| | - Andreas Melmer
- Department of Internal Medicine I, Division of Diabetology and Metabolic Research, Innsbruck Medical University, Innsbruck, Austria
| | - Christoph Ebenbichler
- Department of Internal Medicine I, Division of Diabetology and Metabolic Research, Innsbruck Medical University, Innsbruck, Austria
| | - Kingman P. Strohl
- Department of Medicine, Division of Pulmonary Medicine, University Hospitals, Case Western Reserve University, Cleveland, OH, USA
| | - Josef Högel
- Department of Genetics, University Hospitals, Ulm, Germany
| | - Nikolaus C. Netzer
- Department of Sport Science, Medical Section, University Innsbruck, Innsbruck, Austria
- Department of Medicine, Division of Pulmonary Medicine, University Hospitals, Case Western Reserve University, Cleveland, OH, USA
- Hermann Buhl Institute for Hypoxia and Sleep Medicine Research, University Innsbruck, Bad Aibling, Germany
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Measuring and reporting attrition from obesity treatment programs: A call to action! Obes Res Clin Pract 2014; 9:187-202. [PMID: 25293585 DOI: 10.1016/j.orcp.2014.08.007] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 08/08/2014] [Accepted: 08/25/2014] [Indexed: 11/23/2022]
Abstract
The high attrition rates in obesity interventions are associated with poorer weight loss and maintenance for the individual and poorer overall treatment effectiveness and cost-effectiveness for the treatment provider. Increased knowledge about factors associated with attrition can facilitate the identification of individuals at risk of drop-out and inform treatment program improvements with the aim of maximising treatment retention. To date, a relatively small body of literature has explored attrition from weight-loss interventions using two methods of attrition assessment: identification of pre-treatment predictors of attrition and eliciting post-treatment reasons for attrition. A range of attrition rates have been reported and no reliable or consistent predictors of attrition have been found. It is unknown whether the lack of consistent findings reflects population or treatment differences, or if the discrepant findings simply reflect differences in definition and measurement of attrition. Further research is required to address these limitations. There is a need for a recognised definition of obesity treatment attrition, the consideration of predictors that are theoretically and empirically associated with attrition, the development of a well-validated and standardised measure of barriers to attendance, and assessment of both treatment completers and drop-outs. Understanding the factors that influence attrition can be used to inform the modification of treatment programs and to target those most at risk of drop-out so as to maximise the success of obesity interventions.
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Obesity intervention during a work health promotion: the Obesity Intervention Program of the German military forces. J Occup Environ Med 2014; 55:728-31. [PMID: 23787560 DOI: 10.1097/jom.0b013e318297337b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The aim of the Obesity Intervention Program of the German Army was to enhance physical activity levels, to adjust diet behavior, and to reduce risk factors in outpatients over a period of 24 months. METHODS The data of the participants in the outpatient intervention from 2003 till 2011 were analyzed. RESULTS In total, 665 participants took part. All examined parameters were improved by the intervention, already in the second follow-up, significant for all parameters. A total of 12.2% of all patients reduced their body weight by 5%, and 8.4% by 10%. CONCLUSIONS A significant improvement in all examined parameters was found. With respect to the fact that the participants of this Obesity Intervention Program were only military servicemen and servicewomen, it should be tested if the program can be transferred on work health promotions outside the military.
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Colombo O, Ferretti VV, Ferraris C, Trentani C, Vinai P, Villani S, Tagliabue A. Is drop-out from obesity treatment a predictable and preventable event? Nutr J 2014; 13:13. [PMID: 24490952 PMCID: PMC3914843 DOI: 10.1186/1475-2891-13-13] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 01/28/2014] [Indexed: 11/16/2022] Open
Abstract
Background Attrition is an important but understudied issue that plays a vital role in the successful treatment of obesity. To date, most studies focusing on attrition rates and/or its predictors have been based on pretreatment data routinely collected for other purposes. Our study specifically aims at identifying the predictors of drop-out focusing on empirically or theoretically-based factors. Methods We conducted a retrospective observational study in an academic outpatient clinical nutrition service in Pavia, Italy. We examined a total of 98 adult obese patients (36 males, 62 females) who underwent a 6-month dietary behavioral weight-loss treatment at our Center. Pre-treatment and treatment-related variables were collected or calculated from clinical charts in order to discriminate those subjects who completed treatment from those who abandoned it before its completion. Multivariable regression analysis was used to identify the independent predictors of drop-out. Results The drop-out rates were 21% at 1 month and 57% at 6 months. Compared with completers, noncompleters were significantly younger in terms of age at first dieting attempt (24.0 ± 10.7 vs. 31.3 ± 11.2 years, P = 0.005), had lower diastolic blood pressure (87.8 ± 9.7 vs. 92.7 ± 11.4 mmHg, P = 0.022), had a lower baseline body fat percentage (38.5 ± 6.4 vs. 41.2 ± 4.4% weight, P = 0.015), and had a lower percentage of early weight loss (-1.8 ± 1.8% vs. -3.1 ± 2.1%, P = 0.035). Moreover, noncompleters significantly differed from completers with regard to type of referral (34.1% vs. 53.3% sent by a physician, P = 0.036) and SCL-90 anger-hostility subscale (0.83 ± 0.72 vs. 0.53 ± 0.51, P = 0.022). A multivariable logistic regression analysis including pre-treatment variables showed that body fat percentage (P = 0.030) and SCL-90 anger-hostility subscale (P = 0.021) were independently associated with attrition. In a multivariable model considering both pre-treatment and treatment-related factors, attrition was found to be independently related to the age at first dieting attempt (P = 0.016) and the achievement of early weight loss (P = 0.029). Conclusions Our data confirm that psychopathological tracts, early dieting attempts, and a poor initial treatment response are key independent predictors of drop-out from obesity treatment.
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Affiliation(s)
| | | | | | | | | | | | - Anna Tagliabue
- Human Nutrition and Eating Disorder Research Center, Department of Public Health, Experimental and Forensics Medicine, University of Pavia, via A, Bassi, 21, I-27100 Pavia, Italy.
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Nam S, Dobrosielski DA, Stewart KJ. Predictors of exercise intervention dropout in sedentary individuals with type 2 diabetes. J Cardiopulm Rehabil Prev 2012; 32:370-8. [PMID: 23011489 PMCID: PMC3496000 DOI: 10.1097/hcr.0b013e31826be485] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE While the benefits of exercise in people with type 2 diabetes mellitus is well-known, knowledge of factors associated with dropouts of exercise intervention trials is limited. Examining clinical and psychosocial factors related to dropout is a necessary first step to developing an effective exercise program. We examined the predictors of a randomized trial of exercise intervention dropout among sedentary individuals with type 2 diabetes mellitus. METHODS Participants (n = 140) were randomly allocated to a 6-month, 3 times per week exercise intervention, or to a control group. Psychological well-being was assessed using a 36-item Short Form Health Survey, the Profile of Mood States questionnaire, and an Exercise Self-Efficacy scale. Total percent body fat and abdominal subcutaneous and visceral fat were measured. Insulin resistance was assessed with the quantitative insulin sensitivity check index. Fitness was expressed as VO2 peak during treadmill testing. RESULTS There were significantly more dropouts in the exercise group than in the control group (r = 20.220; P < .01). Those who dropped out of the study had less exercise self-efficacy for lifting weight (r = 0.187; P < .05). Physiological parameters associated with dropouts included low fitness (r = 0.255; P < .01), higher insulin resistance (r = 0.167; P < .05), higher total percent body fat (r = 20.213; P < .05), and higher subcutaneous abdominal fat (r = 20.220; P < .05). In the multiple logistic regression model, exercise group assignment, insulin resistance, and fitness remained significant predictors of dropouts. CONCLUSIONS Special attention to the sedentary individuals with high insulin resistance and poor fitness should be incorporated into implementing exercise programs to improve diabetes treatment.
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Affiliation(s)
- Soohyun Nam
- School of Nursing, Yale University, New Haven, Connecticut 06519, USA.
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Moroshko I, Brennan L, O'Brien P. Predictors of dropout in weight loss interventions: a systematic review of the literature. Obes Rev 2011; 12:912-34. [PMID: 21815990 DOI: 10.1111/j.1467-789x.2011.00915.x] [Citation(s) in RCA: 311] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Attendance and completion of weight loss intervention is associated with better weight loss outcomes; however, attrition is neither consistently reported nor comprehensively explored in the weight loss literature. A systematic review was undertaken to identify factors associated with attrition in weight loss interventions involving overweight or obese (body mass index ≥ 25) adults (18-65 years). Sixty-one studies published before May 2011 and addressing factors associated with weight loss programme attrition were identified. Conclusions were limited by the large number of variables explored, the small number of studies exploring each variable, the large variety of study settings and methodologies used, the inconsistent reporting of results, and the conflicting findings across studies. A consistent set of predictors has not yet been identified. The majority of studies relied on pre-treatment routinely collected data rather than variables selected because of their theoretical and/or empirical relationship with attrition. However, psychological and behavioural patient factors and processes associated with the treatment were more commonly associated with attrition than patient background characteristics. Future research should consider theoretically grounded social-psychological and behavioural processes as potential predictors of dropout. Identification of patients at risk of dropout will contribute to both the effectiveness and the cost-effectiveness of weight loss interventions.
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Affiliation(s)
- I Moroshko
- Centre for Obesity Research and Education, Monash University, Melbourne, Victoria, Australia
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Schoenborn CA, Stommel M. Adherence to the 2008 adult physical activity guidelines and mortality risk. Am J Prev Med 2011; 40:514-21. [PMID: 21496750 DOI: 10.1016/j.amepre.2010.12.029] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Revised: 11/03/2010] [Accepted: 12/23/2010] [Indexed: 11/16/2022]
Abstract
BACKGROUND Mortality differentials by level and intensity of physical activity have been widely documented. A comprehensive review of scientific evidence of the health benefits of physical activity led the USDHHS to issue new Federal Guidelines for physical activity in 2008. Reductions in mortality risk associated with adherence to these Guidelines among the general U.S. adult population have not yet been studied. PURPOSE This study compared the relative mortality risks of U.S. adults who met the 2008 Guidelines with adults who did not meet the recommendations. METHODS Cox proportional hazards models were used to examine the relative mortality risks of U.S. adults aged ≥18 years, using data from the 1997-2004 National Health Interview Survey and linked mortality records for deaths occurring in 1997-2006 (analyzed in 2010). Risks for adults with and without chronic health conditions were examined separately. RESULTS Meeting the recommendations for aerobic activity was associated with substantial survival benefits, especially among the population having chronic conditions, with estimated hazard ratios ranging from 0.65 to 0.75 (p<0.05). While strengthening activities by themselves did not appear to reduce mortality risks, they may provide added survival benefits to those already engaged in aerobic activities. The relative benefits of physical activity were greatest among adults who had at least one chronic condition. CONCLUSIONS Adherence to the 2008 Physical Activity Guidelines was associated with reduced all-cause mortality risks among U.S. adults, after controlling for sociodemographic characteristics, BMI, smoking, and alcohol use.
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Affiliation(s)
- Charlotte A Schoenborn
- Division of Health Interview Statistics, National Center for Health Statistics/CDC, Hyattsville, Maryland 20782, USA.
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