Results
The lunch meal had a significant effect on the ad libitum dinner energy intake (p=0.0182).
The high meat protein lunch resulted in a lower energy intake than the normal lunch (-250 kJ).
A tendency towards a significantly reduced dai- ly energy intake was found when the high meat protein lunch was consumed (p=0.0561).
No significant effects could be demonstrated on hunger or fullness ratings. One exception was after the lunch, as the high meat protein lunch decreased fullness (p=0.0460).
Table 1. The served lunch meals and their nutritional composition (mean values).
Figure 1. Effects of lunch meal (high meat protein lunch
vs. normal lunch) on energy intake. A significant difference (p<0.05) between the lunch meals is indicated by a *.
Figure 2. Hunger and fullness ratings (means ± SE) for the two lunch meals.
Contact
Ursula Kehlet
Email: unk@dti.dk
Phone: +45 72 20 29 01
Serving a high meat protein lunch reduces subsequent
energy intake at dinner:
– a randomised trial conducted in a real-life setting
Ursula Kehlet
1, Per B.Brockhoff
2, Mari Ann Tørngren
1and Margit Dall Aaslyng
1Objectives
To investigate how high protein meals containing pork affect appetite and energy intake when con- sumed in a real-life setting.
Materials and Methods
• Crossover study
• 134 students (15-16 years old)
• Conducted at a local boarding school
1) Danish Meat Research Institute, DK-4000 Roskilde, www.DMRI.com 2) Technical University of Denmark, DK-2800 Lyngby
#112
Appetite 1 Appetite 2 Appetite 3 Appetite 4 Appetite 5
12:00 12:30 15:30 18:00 18:30
LUNCH
High meat protein Normal
DINNER Ad libitum
High-meat protein lunch Normal lunch
Pork stroganoff with mashed
potatoes and salad Pork stroganoff with mashed potatoes and salad
Energy: 2235 kJ Protein: 36 E%
Carbohydrate: 33 E%
Fat: 31 E%
Energy: 2480 kJ Protein: 17 E%
Carboydrate: 51 E%
Fat: 32 E%
0 1000 2000 3000 4000 5000 6000 7000 8000 9000
Ad libitum meal Daily energy intake
kJ
High meat protein lunch Normal lunch
*
0 20 40 60 80 100 120 140
12:00
before lunch 12:30
after lunch 15:30 18:00
before dinner 18:30 after dinner
VAS (0-150 mm)
Hunger High meat protein lunch Normal lunch
0 20 40 60 80 100 120 140
12:00
before lunch 12:30
after lunch 15:30 18:00
before dinner 18:30 after dinner
VAS (0-150 mm)
Fullness High meat protein lunch Normal lunch
*
0 20 40 60 80 100 120 140
12:00
before lunch 12:30
after lunch 15:30 18:00
before dinner 18:30 after dinner
VAS (0-150 mm)
Hunger High meat protein lunch Normal lunch
0 20 40 60 80 100 120 140
12:00
before lunch 12:30
after lunch 15:30 18:00
before dinner 18:30 after dinner
VAS (0-150 mm)
Fullness High meat protein lunch Normal lunch
*
Conclusion
High protein lunch meals with pork suppress
energy intake at dinner
