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Université de Fribourg

The contribution of Swiss scientists to the assessment of energy metabolism

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

In: European Journal of Clinical Nutrition, 2018, vol. 72, no. 5, p. 665–679

Although Switzerland is considered a small country, it has its share in discoveries, inventions and developments for the assessment of energy metabolism. This includes seminal contributions to respiratory and metabolic physiology and to devices for measuring energy expenditure by direct and indirect calorimetry in vivo in humans and small animals (as well as in vitro in organs/tissues), for...

Université de Fribourg

Cardiovascular responses to sugary drinks in humans: galactose presents milder cardiac effects than glucose or fructose

Charrière, Nathalie ; Loonam, Cathriona ; Montani, Jean-Pierre ; Dulloo, Abdul G. ; Grasser, Erik K.

In: European Journal of Nutrition, 2017, vol. 56, no. 6, p. 2105–2113

PurposeThere is increasing interest into the potentially beneficial effects of galactose for obesity and type 2 diabetes management as it is a low-glycemic sugar reported to increase satiety and fat mobilization. However, fructose is also a low-glycemic sugar but with greater blood pressure elevation effects than after glucose ingestion. Therefore, we investigated here the extent to which the...

Université de Fribourg

Standing economy: does the heterogeneity in the energy cost of posture maintenance reside in differential patterns of spontaneous weight-shifting?

Miles-Chan, Jennifer L. ; Fares, Elie-Jacques ; Berkachy, Redina ; Jacquet, Philippe ; Isacco, Laurie ; Schutz, Yves ; Montani, Jean-Pierre ; Dulloo, Abdul G.

In: European Journal of Applied Physiology, 2017, vol. 117, no. 4, p. 795–807

Due to sedentarity-associated disease risks, there is much interest in methods to increase low-intensity physical activity. In this context, it is widely assumed that altering posture allocation can modify energy expenditure (EE) to impact body-weight regulation and health. However, we have recently shown the existence of two distinct phenotypes pertaining to the energy cost of...

Université de Fribourg

Reliability of low‐power cycling efficiency in energy expenditure phenotyping of inactive men and women

Fares, Elie-Jacques ; Isacco, Laurie ; Monnard, Cathriona R. ; Miles-Chan, Jennifer L. ; Montani, Jean-Pierre ; Schutz, Yves ; Dulloo, Abdul G.

In: Physiological Reports, 2017, vol. 5, no. 9, p. e13233

Standardized approaches to assess human energy expenditure (EE) are well defined at rest and at moderate to high‐intensity exercise, but not at light intensity physical activities energetically comparable with those of daily life (i.e., 1.5–4 times the resting EE, i.e., 1.5–4 METs). Our aim was to validate a graded exercise test for assessing the energy cost of low‐intensity dynamic...

Université de Fribourg

Polyunsaturated fatty acids stimulate de novo lipogenesis and improve glucose homeostasis during refeeding with high fat diet

Crescenzo, Raffaella ; Mazzoli, Arianna ; Cancelliere, Rosa ; Bianco, Francesca ; Giacco, Antonia ; Liverini, Giovanna ; Dulloo, Abdul G. ; Iossa, Susanna

In: Frontiers in Physiology, 2017, vol. 8, p. -

The recovery of body weight after a period of caloric restriction is accompanied by an enhanced efficiency of fat deposition and hyperinsulinemia—which are exacerbated by isocaloric refeeding on a high fat diet rich in saturated and monounsaturated fatty acids (SFA-MUFA), and poor in polyunsaturated fatty acids (PUFA), and associated with a blunting of de novo lipogenesis in adipose tissue...