vendredi 17 juin 2011

Vous pouvez maigrir plus vite avec des mets plus pimentés...

1/ Essayez sans frais le régime paléolithique exposé dans ce blog
2/ ajoutez du piment à votre assiette
Les différents piments
Cayenne
Espelette mon préféré car n'occasionne aucun trouble digestif chez moi!
Niora
Bec d'oiseau
La conséquence sera une consommation métabolique plus élevée!
On pourrait essayer les piments en association avec l'arrêt du tabac...
La ressource :


Physiology & Behavior
Volume 102, Issues 3-4, 1 March 2011, Pages 251-258


The effects of hedonically acceptable red pepper doses on thermogenesis and appetite
a Purdue University, West Lafayette, IN 47907, USA
Received 11 August 2010;  
revised 17 October 2010;  
accepted 12 November 2010.  
Available online 18 November 2010. 



Abstract


Previous studies suggest consumption of red pepper (RP) promotes negative energy balance. However, the RP dose provided in these studies (up to 10 g/meal) usually exceeded the amount preferred by the general population in the United States (mean = ~ 1 g/meal). The objective of this study was to evaluate the effects of hedonically acceptable RP doses served at a single meal in healthy, lean individuals on thermogenesis and appetite. Twenty-five men and women (aged 23.0 ± 0.5 years, BMI 22.6 ± 0.3 kg/m2, 13 spicy food users and 12 non-users) participated in a randomized crossover trial during which they consumed a standardized quantity (1 g); their preferred quantity (regular spicy food users 1.8 ± 0.3 g/meal, non-users 0.3 ± 0.1 g/meal); or no RP. Energy expenditure, core body and skin temperature, and appetite were measured. Postprandial energy expenditure and core body temperature were greater, and skin temperature was lower, after test loads with 1 g RP than no RP. Respiratory quotient was lower after the preferred RP dose was ingested orally, compared to in capsule form. These findings suggest that RP's effects on energy balance stem from a combination of metabolic and sensory inputs, and that oral exposure is necessary to achieve RP's maximum benefits. Energy intake was lower after test loads with 1 g RP than no RP in non-users, but not in users. Preoccupation with food, and the desire to consume fatty, salty, and sweet foods were decreased more (or tended to be decreased more) in non-users than users after a 1 g RP test load, but did not vary after a test load with no RP. This suggests that individuals may become desensitized to the effects of RP with long-term spicy food intake.

Research Highlights


► Ingestion of red pepper (RP) increased energy expenditure and core temperature. ► Respiratory quotient was lower after oral RPingestion compared to capsule form. ► RP ingestion lowered intake and appetite in spicy food non-users, but not users. ► RP's effects on energy balance are a combination of metabolic and sensory inputs. ► Desensitization to RP's effects may occur with long-term spicy food intake.



D'où ma question:




"Dear Sir,
I just read you recent paper and have a question:
Do you think that the absolute increase in energy expenditure after RP consumption is in the same range that the nicotine induced increase of BM?
Thank you by advance,
regards,"

et la réponse:

"The most striking parallel to me between the nicotine and red pepper research is the existence of differential effects by level of use.  My read of the smoking literature is that compared to less frequent smokers, higher levels of cigarette smoking are associated with a desensitization to the energy expenditure effects of nicotine.  Although we observed that energy expenditure was enhanced by about 10 kcal following a meal with red pepper in both regular spicy food users and non-users, orexigenic appetitive sensations were suppressed only in non-users of spicy foods (decreased hunger for sweet, salty, and fatty foods, as well as a 60 kcal decrease energy intake at next meal). 

In terms of a comparision between the absolute magnitude of nicotine and red pepper's energy expenditure effects, this remains to be determined.  The 10 kcal increase we saw following a meal with 1 g red pepper was very modest.  The reported value for nicotine appears to be higher, around 5% resting metabolic rate."

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