Apelsinjuice begränsar fettoxidationen efter måltider

[King Grub]

Caloric beverages may promote weight gain by simultaneously increasing total energy intake and limiting fat oxidation. During moderate intensity exercise, caloric beverage intake depresses fat oxidation by 25% or more. This randomized crossover study describes the impact of having a caloric beverage with a typical meal on fat oxidation under resting conditions. On 2 separate days, healthy normal-weight adolescents (n = 7) and adults (n = 10) consumed the same breakfast with either orange juice or drinking water and sat at rest for 3 h after breakfast. The meal paired with orange juice was 882 kJ (210 kcal) higher than the meal paired with drinking water. Both meals contained the same amount of fat (12 g). For both age groups, both meals resulted in a net positive energy balance 150 min after breakfast. Resting fat oxidation 150 min after breakfast was significantly lower after breakfast with orange juice, however. The results suggest that, independent of a state of energy excess, when individuals have a caloric beverage instead of drinking water with a meal, they are less likely to oxidize the amount of fat consumed in the meal before their next meal.

Adv Nutr. 2012 Jul 1;3(4):629S-35S. Orange juice limits postprandial fat oxidation after breakfast in normal-weight adolescents and adults.

[Sniggel]

Ökar man kolhydratsmängden förbränner man väl mer andel kolhydrater? Är inte det rätt väntat?

[Ola Wallengren]

Jag har inte läst studien men från sammanfattningen så låter det hela helkorkat.

Increasing energy intake in the resting state results in a more positive energy balance. However, we did not fully understand the concept of energy balance and the dynamics of post-prandial nutrient partitioning and consequently did not expect that.

[A.Steinbach]

Var det här verkligen nödvändigt att göra en studie för att undersöka? Det borde ju vara en självklarhet att om man har en måltid med mer energi jämfört med en annan måltid och jämför dessa under en viss mätperiod så kommer ju det ta längre tid för måltiden med högre energiinehåll att närma sig fastenivån av insulin och därmed bränna mindre fett under just denna mätperioden.

[Sniggel]

Increasing energy intake in the resting state results in a more positive energy balance. However, we did not fully understand the concept of energy balance and the dynamics of post-prandial nutrient partitioning and consequently did not expect that.

Va? Står det verkligen så?

[Ola Wallengren]

Nej, hela stycket har jag skrivit för att jag tyckte det skulle passa in i artikeln.

[Sniggel]

Jaha ok. Misstänkte nästan det! :P