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Université de Fribourg

Body composition-derived BMI cut-offs for overweight and obesity in ethnic Indian and Creole urban children of Mauritius

Ramuth, Harris ; Hunma, Sadhna ; Ramessur, Vinaysing ; Ramuth, Magalutcheemee ; Monnard, Cathriona ; Montani, Jean-Pierre ; Schutz, Yves ; Joonas, Noorjehan ; Dulloo, Abdul G.

In: British Journal of Nutrition, 2020, vol. 124, no. 5, p. 481–492

It is increasingly recognised that the use of BMI cut-off points for diagnosing obesity (OB) and proxy measures for body fatness in a given population needs to take into account the potential impact of ethnicity on the BMI–fat % relationship in order to avoid adiposity status misclassification. This relationship was studied here in 377 Mauritian schoolchildren (200 boys and 177 girls, aged...

Université de Fribourg

Fat oxidation kinetics is related to muscle deoxygenation kinetics during exercise

Zurbuchen, Anouck ; Lanzi, Stefano ; Voirol, Ludovic ; Trindade, Cybele Barboza ; Gojanovic, Boris ; Kayser, Bengt ; Bourdillon, Nicolas ; Chenevière, Xavier ; Malatesta, Davide

In: Frontiers in Physiology, 2020, vol. 11, p. -

The present study aimed to determine whether whole-body fat oxidation and muscle deoxygenation kinetics parameters during exercise were related in individuals with different aerobic fitness levels.Methods: Eleven cyclists [peak oxygen uptake (V.O2peak): 64.9 ± 3.9 mL⋅kg–1⋅min–1] and 11 active individuals (V.O2peak: 49.1 ± 7.4 mL⋅kg–1⋅min–1) performed a maximal incremental...

Université de Fribourg

How dieting might make some fatter: modeling weight cycling toward obesity from a perspective of body composition autoregulation

Jacquet, Philippe ; Schutz, Yves ; Montani, Jean-Pierre ; Dulloo, Abdul G.

In: International Journal of Obesity, 2020, vol. 44, p. 1243-1253

The notion that dieting makes some people fatter has in the past decade gained considerable interest from both epidemiological predictions and biological plausibility. Several large-scale prospective studies have suggested that dieting to lose weight is associated with future weight gain and obesity, with such predictions being stronger and more consistent among dieters who are in the normal...

Université de Fribourg

Total energy expenditure assessed by doubly labeled water technique and estimates of physical activity in Mauritian children: analysis by gender and ethnicity

Ramuth, Harris ; Schutz, Yves ; Calonne, Julie ; Joonas, Noorjehan ; Dulloo, Abdul G.

In: European Journal of Clinical Nutrition, 2020, vol. 74, no. 3, p. 445–453

In the tropical island of Mauritius, the rise in obesity has accelerated in the past decades, and could be contributed by low physical activity and increased sedentary behavior. The study objectives were to generate the first dataset of total energy expenditure (TEE), to estimate physical activity in Mauritian children, and to explore differences due to gender and ethnicity.Subjects/methods:...

Université de Fribourg

Low 24-hour core body temperature as a thrifty metabolic trait driving catch-up fat during weight regain after caloric restriction

Calonne, Julie ; Arsenijevic, Denis ; Scerri, Isabelle ; Miles-Chan, Jennifer L. ; Montani, Jean-Pierre ; Dulloo, Abdul G.

In: American Journal of Physiology-Endocrinology and Metabolism, 2019, vol. 317, no. 4, p. E699–E709

The recovery of body weight after substantial weight loss or growth retardation is often characterized by a disproportionately higher rate of fat mass vs. lean mass recovery, with this phenomenon of “preferential catch-up fat” being contributed by energy conservation (thrifty) metabolism. To test the hypothesis that a low core body temperature (Tc) constitutes a thrifty metabolic trait...

Université de Fribourg

Assessment of the dose–response relationship between meal protein content and postprandial thermogenesis: effect of sex and the oral contraceptive pill

Duhita, Maharani R. ; Schutz, Yves ; Montani, Jean-Pierre ; Dulloo, Abdul G. ; Miles-Chan, Jennifer L.

In: Nutrients, 2019, vol. 11, no. 7, p. 1599

Implementation of efficacious dietary interventions to regulate energy balance requires understanding of the determinants of individual response. To date, information regarding individual variability in response to elevated meal protein content is lacking. This study investigates whether sex and/or oral contraceptive pill (OCP) use play a role in the response to elevated meal protein in 21...

Université de Fribourg

European practical and patient-centred guidelines for adult obesity management in primary care

Durrer Schutz, D. ; Busetto, L. ; Dicker, D. ; Farpour-Lambert, N. ; Pryke, R. ; Toplak, H. ; Widmer, D. ; Yumuk, V. ; Schutz, Yves

In: Obesity Facts, 2019, vol. 12, no. 1, p. 40–66

The first contact for patients with obesity for any medical treatment or other issues is generally with General Practitioners (GPs). Therefore, given the complexity of the disease, continuing GPs’ education on obesity management is essential. This article aims to provide obesity management guidelines specifically tailored to GPs, favouring a practical patient-centred approach. The focus is...