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Barchfeld DC, Vagi RK, Lüdtke K, Schieffer E, Güler F, Einecke G, Jäger B, de Zwaan M, Nöhre M. Cognitive-behavioral and dietary weight loss intervention in adult kidney transplant recipients with overweight and obesity: Results of a pilot RCT study (Adi-KTx). Front Psychiatry 2023; 14:1071705. [PMID: 37113542 PMCID: PMC10126341 DOI: 10.3389/fpsyt.2023.1071705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 03/03/2023] [Indexed: 04/29/2023] Open
Abstract
The obesity epidemic and its health consequences have not spared the population of kidney transplant (KTx) candidates and recipients. In addition, KTx recipients are susceptible to weight gain after transplantation. Overweight and obesity after KTx are strongly associated with adverse outcomes. Therefore, we designed a randomized controlled, mono-center study to specifically test the effectiveness of a primarily cognitive-behavioral approach supplemented by nutritional counseling for weight reduction following KTx as the intervention group (IG) in comparison to a brief self-guided intervention as control group (CG). The study was registered in the German Clinical Trials Register (DRKS-ID: DRKS00017226). Fifty-six KTx patients with a BMI from 27 to 40 kg/m2 were included in this study and randomized to the IG or CG. Main outcome was the number of participants achieving a 5% weight loss during the treatment phase. Additionally, participants were assessed 6 and 12 months after the end of the 6-month treatment phase. Participants significantly lost weight without group differences. 32.0% (n = 8) of the patients in the IG and 16.7% (n = 4) of the patients in the CG achieved a weight loss of 5% or more. Weight loss was largely maintained during follow-up. Retention and acceptance rate in the IG was high, with 25 (out of 28) patients completing all 12 sessions and one patient completing 11 sessions. Short-term, cognitive-behaviorally oriented weight loss treatment seems to be feasible and acceptable for patients after KTx who suffer from overweight or obesity. This clinical trial was ongoing at the onset of the COVID-19 pandemic which might have influenced study conduct and results. Clinical Trial Registration: https://clinicaltrials.gov/ DRKS-ID: DRKS00017226.
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Affiliation(s)
- Dana Coco Barchfeld
- Department of Psychosomatic Medicine and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Ricarda-Katharina Vagi
- Department of Psychosomatic Medicine and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Katrin Lüdtke
- Department of Psychosomatic Medicine and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Elisabeth Schieffer
- Department of Cardiology, Angiology and Critical Care Medicine, Philipps University, Marburg, Germany
- Department of Sports Medicine, Hannover Medical School, Hannover, Germany
| | - Faikah Güler
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Gunilla Einecke
- Department of Nephrology and Rheumatology, University Medical Center Goettingen, Goettingen, Germany
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Burkard Jäger
- Department of Psychosomatic Medicine and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Martina de Zwaan
- Department of Psychosomatic Medicine and Psychotherapy, Hannover Medical School, Hannover, Germany
| | - Mariel Nöhre
- Department of Psychosomatic Medicine and Psychotherapy, Hannover Medical School, Hannover, Germany
- *Correspondence: Mariel Nöhre,
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Castle EM, Dijk G, Asgari E, Shah S, Phillips R, Greenwood J, Bramham K, Chilcot J, Greenwood SA. The Feasibility and User-Experience of a Digital Health Intervention Designed to Prevent Weight Gain in New Kidney Transplant Recipients—The ExeRTiOn2 Trial. Front Nutr 2022; 9:887580. [PMID: 35677553 PMCID: PMC9168981 DOI: 10.3389/fnut.2022.887580] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/03/2022] [Indexed: 12/02/2022] Open
Abstract
Half of kidney transplant recipients (KTRs) gain more than 5% of their body weight in the first year following transplantation. KTRs have requested support with physical activity (PA) and weight gain prevention, but there is no routine care offered. There are few high-quality studies investigating the clinical value of diet, PA or combined interventions to prevent weight gain. The development and evaluation of theoretically informed complex-interventions to mitigate weight gain are warranted. The aims of this mixed-methods randomized controlled trial (RCT) were to explore the feasibility, acceptability and user-experience of a digital healthcare intervention (DHI) designed to prevent post-transplant weight gain, in preparation for a large multi-center trial. New KTRs (<3 months) with access to an internet compatible device were recruited from a London transplant center. The usual care (UC) group received standard dietary and PA advice. The intervention group (IG) received access to a 12-week DHI designed to prevent post-transplant weight gain. Primary feasibility outcomes included screening, recruitment, retention, adherence, safety and hospitalizations and engagement and experience with the DHI. Secondary outcomes (anthropometrics, bioimpedance, arterial stiffness, 6-minute walk distance and questionnaires) were measured at baseline, 3- and 12-months. 38 KTRs were screened, of which 32 (84.2%) were eligible, and of those 20 (62.5%) consented, with 17 participants (85%) completing baseline assessment (Median 49 years, 58.8% male, Median 62 days post-transplant). Participants were randomized using a computer-generated list (n = 9 IG, n = 8 UC). Retention at 12-months was 13 (76.4%) (n = 6 IG, n = 7 UC). All a priori progression criteria were achieved. There were no associated adverse events. Reflexive thematic analysis revealed four themes regarding trial participation and experience whilst using the DHI. Halting recruitment due to COVID-19 resulted in the recruitment of 40% of the target sample size. Mixed-methods data provided important insights for future trial design. A definitive RCT is warranted and welcomed by KTRs.
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Affiliation(s)
- Ellen M. Castle
- Therapies Department, King's College Hospital, NHS Foundation Trust, London, United Kingdom
- King's Kidney Care, King's College Hospital, London, United Kingdom
- Renal Sciences, King's College London University, London, United Kingdom
- *Correspondence: Ellen M. Castle ; orcid.org/0000-0002-6961-6108
| | - Giulia Dijk
- Department of Nutrition and Dietetics, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Elham Asgari
- Kidney Services Team, Guy's and St Thomas' NHS Foundation Trust London, London, United Kingdom
| | - Sapna Shah
- King's Kidney Care, King's College Hospital, London, United Kingdom
- Renal Sciences, King's College London University, London, United Kingdom
| | - Rachel Phillips
- Imperial Clinical Trials Unit, School of Public Health, Imperial College London, London, United Kingdom
- Pragmatic Clinical Trials Unit, Centre for Evaluation and Methods, Wolfson Institute of Population Health, London, United Kingdom
| | - James Greenwood
- Victor Horsley Department of Neurosurgery, University College London Hospital, London, United Kingdom
| | - Kate Bramham
- King's Kidney Care, King's College Hospital, London, United Kingdom
- Department of Women and Children's Health, Faculty of Life Sciences and Medicine King's College London, London, United Kingdom
| | - Joseph Chilcot
- Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Sharlene A. Greenwood
- Therapies Department, King's College Hospital, NHS Foundation Trust, London, United Kingdom
- King's Kidney Care, King's College Hospital, London, United Kingdom
- Renal Sciences, King's College London University, London, United Kingdom
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