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Effectiveness of protein supplementation combined with resistance training to counteract disproportional fat-free mass loss following metabolic bariatric surgery: rationale and design of the ENRICHED randomised controlled trial

Por: de Roos · B. M. · Yeh · L.-L. Y. · van den Hooff · P. S. · Nuijten · M. A. H. · Twisk · J. W. R. · Liem · R. S. L. · van Acker · G. J. D. · Severens · J. L. · Kambic · T. · Serlie · M. J. M. · Monpellier · V. M. · Eijsvogels · T. M. H. · Hopman · M. T. E. · Karregat · J. H. M.
Introduction

Metabolic bariatric surgery (MBS) can lead to substantial fat-free mass loss (FFML) due to malnutrition, decreased protein intake and insufficient physical activity. Disproportional FFML has been associated with an increased risk for adverse health outcomes. Resistance training (RT) combined with protein intake contributes to maintenance and increase of fat-free mass (FFM) in healthy individuals. However, it is unclear whether RT and protein supplementation can prevent FFML after MBS.

Methods and analysis

In the EffectiveNess of pRotein supplementatIon Combined witH resistance Exercise training to counteract Disproportional fat-free mass loss following metabolic bariatric surgery (ENRICHED) randomised controlled trial, 400 patients scheduled to undergo MBS will be randomised in a 1:1 ratio to the ENRICHED perioperative care programme (intervention group) or the standard perioperative care programme of the Dutch Obesity Clinic (control group). The study is currently recruiting participants at two centres in the Netherlands: Nieuwegein and Amsterdam. The postoperative standard programme consists of 13 group sessions spread over a period of 18 months. As part of the ENRICHED programme, RT and protein supplementation will be added 3 weeks after MBS. Additional whole-body RT consists of home-based training sessions two to three times a week, and supervised RT sessions of 45–60 min once weekly, performed at 60–75% of one-repetition maximum (1-RM). Protein supplementation will start by adding 20 g of whey protein to the daily intake. The supplementation will be gradually increased with 20 g every 4 weeks until a total of 60 g whey protein a day is reached. After 12 weeks of protein supplementation, the focus shifts towards incorporating protein-rich food products into the daily dietary intake. The primary endpoint is the prevalence of disproportional FFM loss, defined as FFML/total weight loss ≥30%, at 3 months post-MBS. Secondary endpoints are differences in body composition, muscle strength and function, cardiorespiratory fitness, (cardio)metabolic health, health-related quality of life, gastrointestinal discomfort, cost-effectiveness of the intervention and treatment satisfaction. Outcomes will be assessed preoperatively and at 3, 6 and 12 months postoperatively.

Ethics and dissemination

The study protocol V.2.0 was approved by the Medical Research Ethics Committee Oost-Nederland (NL-OMON57119) on 9 April 2025. All participants will provide written informed consent prior to enrolment. Study findings will be disseminated through peer-reviewed publications and conference presentations. Insights gained in this study will provide evidence for a patient-tailored intervention that could be implemented in clinical practice.

Trial registration number

NCT07156552.

Adherence to Choosing Wisely Africa recommendations in breast cancer care: a cross-sectional study across three Sub-Saharan African centres

Por: Rubagumya · F. · Rugengamanzi · E. · Nyagabona · S. K. · Ndumbalo · J. · Kwizera · V. · Uwimbabazi · A. · Celyna · K. · Ayettey · H. · Vanderpuye · V. · Hopman · W. M. · Hammad · N. · Booth · C. M.
Objective

The expenses associated with cancer treatment are increasing at a rapid pace. The financial strain of providing care is experienced worldwide, but is particularly pronounced in low and middle-income countries (LMICs). This has resulted in a growing acknowledgement of the importance of value-based cancer care. Choosing Wisely Africa (CWA) is an initiative aimed at reducing the excessive use and expenses associated with cancer treatment. In this study, we assessed adherence to CWA recommendations for the treatment of breast cancer in three high-volume cancer centres in Sub-Saharan Africa (SSA).

Design

A cross-sectional study across Rwanda, Ghana and Tanzania was conducted, involving a review of medical records to assess adherence to five measurable CWA practices in breast cancer care. The study used inferential statistics, such as 2 tests, to compare adherence among these countries.

Settings

This study was conducted in three cancer centres (Ocean Road Cancer Institute, Rwanda Military Hospital and Korle Bu Teaching Hospital) in three countries (Tanzania, Rwanda and Ghana, respectively).

Participants

A total of 542 patients were recruited. Eligible patients were those with a breast cancer diagnosis and complete data as pertaining to five CWA recommendations.

Results

A total of 542 participants with a mean age of 51 years were included. Participants were well distributed across Ghana (37%), Rwanda (34%) and Tanzania (29%). Female patients represented 97% of the study cohort. Half (51%) of the participants had some form of insurance. The study observed high adherence to cancer staging (94%) before treatment and histological confirmation (91%) before breast lump removal across all sites. Hypofractionation was used in 0% of cases in Rwanda, 42% in Ghana and 70% in Tanzania.

Conclusion

This study provides critical insights into the implementation of CWA recommendations in breast cancer care in SSA. It highlights the disparities in adherence to CWA recommendations across different centres, showing the need for policy-driven changes and healthcare infrastructure improvement to standardise cancer care practices in LMICs.

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