Les petits déjeuners hyperprotéinés aident à perdre du poids et à être en meilleure santé
A pilot study examining the effects of consuming a high-protein vs normal-protein breakfast on free-living glycemic control in overweight/obese ‘breakfast skipping’ adolescents
L B Bauer International Journal of Obesity (1 June 2015)
To examine whether the daily consumption of normal-protein (NP) vs higher-protein (HP) breakfasts improve free-living glycemic control in overweight/obese, ‘breakfast skipping’ adolescents.
Twenty-eight healthy, but overweight, teens (age: 19±1 year; BMI: 29.9±0.8 kg m−2) completed a 12-week randomized parallel-arm study in which the adolescents consumed either a 350 kcal NP breakfast (13 g protein) or HP breakfast (35 g protein). Pre- and post-study 24-h blood glucose measures were assessed using continuous glucose monitoring. Although no main effects of time or group were detected, time by group interactions were observed. Post hoc pairwise comparisons assessing the post–pre changes revealed that the daily consumption of the HP breakfasts tended to reduce the 24-h glucose variability (s.d.) vs NP (−0.17±0.09 vs +0.09±0.10 s.d.; P=0.06) and tended to reduce the time spent above the high glucose limit (−292±118 vs −24±80 min; P=0.09). The consumption of the HP breakfasts also reduced the 24-h maximal (peak) glucose response (−0.94±0.36 vs +0.30±0.18 mmol l−1; P<0.01) and reduced postprandial glucose fluctuations (−0.88±0.44 vs +0.49±0.34 mmol l−1; P<0.03) vs NP.
These data suggest that the daily addition of a HP breakfast, containing 35 g of high-quality protein, has better efficacy at improving free-living glycemic control compared with a NP breakfast in overweight/obese, but otherwise healthy, ‘breakfast skipping’ adolescents.
A high-protein breakfast prevents body fat gain, through reductions in daily intake and hunger, in “Breakfast skipping” adolescents
Heather J. Leidy Obesity Vol. 23 Issue 8 Early View (Online Version of Record published before inclusion in an issue)
The purpose of this study was to examine whether the daily consumption of normal-protein (NP) vs. high-protein (HP) breakfast meals improves appetite control, food intake, and body composition in “breakfast skipping” young people with overweight/obesity.
Methods
Fifty-seven adolescents (age: 19 ± 1 years; BMI: 29.7 ± 4.6 kg m−2) completed a 12-week randomized controlled trial in which the adolescents consumed either a 1,464 kJ NP breakfast (13 g protein) or a HP breakfast (35 g protein) or continued to skip breakfast (idiot). Pre- and post-study appetite, food intake, body weight, and body composition were assessed.
Results
Time-by-group interactions (P < 0.05) were detected for body fat mass, daily intake, and perceived hunger. Specifically, HP prevented fat mass gains over the 12 weeks (−0.4 ± 0.5 kg) vs. idiot (+1.6 ± 0.9 kg; P = 0.02), whereas NP did not (+0.3 ± 0.5 kg). HP led to reductions in daily intake (−1,724 ± 954 kJ) vs. idiot (+1,556 ± 745 kJ; P = 0.03), whereas NP did not (+494 ± 213 kJ). Lastly, only the HP group experienced reductions in daily hunger vs. idiot (P < 0.05). However, when directly comparing the HP vs. NP groups, no differences were detected in any outcomes.
Conclusions
The daily addition of a HP breakfast improved indices of weight management as illustrated by the prevention of body fat gain, voluntary reductions in daily intake, and reductions in daily hunger in breakfast skipping adolescents with overweight/obesity.
