Overweight
Conditions
Keywords
Proteins (seafood and meat), GI, Energy expenditure, Energy balance, Thermogenesis (DIT), Appetite regulating hormones, Appetite sensations, Glucose allostatis, Amino acid metabolism, Satiety, Food preferences
Brief summary
The hypothesis is that seafood proteins given in combination with carbohydrates with low GI are superior to seafood proteins in combination with carbohydrates with high GI and meat in combination with both carbohydrates with low and high GI in promoting energy expenditure and satiety. The overall objective of this study is to investigate the acute effects of meals containing fish versus meat proteins on energy balance (thermogenesis, appetite regulating hormones and appetite sensations), markers of glucose allostatis and amino acid metabolism.
Interventions
OTHERFish and carbohydrats with low or high GI
OTHERVeal and carbohydrats with low or high GI
Sponsors
The Fisheries and Aquaculture Industry Research Fund
National Institute of Nutrition and Seafood Research, Norway
University of Copenhagen
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 50 Years
Healthy volunteers
Yes
Inclusion criteria
* Healthy men and women * Between 18 and 50 years of age * BMI between 25.0 and 30.0 kg×m-2 * Fasting blood glucose \< 5.9 mmol/L (measured at the screenings visit) * Non-smoker
Exclusion criteria
* Self-reported eating disorders or irregular eating schedule (e.g. skipping breakfast) * Chronic diseases (e.g. cancer, asthma, back pain, thyroid disease, heart disease, diabetes, neurological disorders, or sleep disorders) * Use currently or within the previous 3 months of prescription medication that has the potential of affecting body weight or glucose metabolism such as glucocorticoids (but excluding inhaled and topical steroids; bronchodilators are allowed), psychoactive medication, epileptic medication, or weight loss medications (either prescription, over the counter or herbal). Low dose antidepressants are allowed if they, in the judgement of the investigator, do not affect weight or participation to the study protocol. Levothyroxine for treatment of hypothyroidism is allowed if the participant has been on a stable dose for at least 3 months. * Women who are pregnant, breast-feeding or have intention of becoming pregnant during the study period * Menopausal women and women with an irregular menstrual cycle * Food allergies * Substance abuse * Vigorous physical activity more than 10 hours/week * Alcohol intake above the recommendations from the Danish Health and Medicines Authority * Caffeine intake above 300 mg/day * Night- or shift work * Blood donation \<1 month before study commencement and during study period * Simultaneous participation in other clinical studies * Inability, physically or mentally, to comply with the procedures required by the study protocol, as evaluated by the study staff * Subject's general condition contraindicates continuing the study, as judged by the study personnel or the medical expert
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Differences in diet induced thermogenesis between the four test meals | 3 hours | In the following three hours after eating the test meal respiratory gas exchange will be measured 6x25 minutes with 5 minutes breaks in between each measurement. Diet induced thermogenesis (DIT) will be measured by indirect calorimetry using a ventilated hood system. Each measurement will last for 25 minutes of which the last 20 minutes will be used for calculation of energy expenditure. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| C-peptide | 3 hours | Blood sample |
| Plasma amino acids | 3 hours | Blood samples |
| Appetite regulating hormones | 3 hours | e.g. glucagon-like peptide-1 (GLP-1) |
| Free fatty acids | 3 hours | Blood sample |
| Glucagon | 3 hours | Blood sample |
| Satiety | 3 hours | Evaluated by VAS-measures of subjective appetite sensations (satiety, hunger, fullness and prospective food consumption) |
| Food preferences | 3 hours | In an attempt to measure spontaneous energy intake and macronutrient preferences in an experimental context, the participants will be given an ad libitum buffet lunch at noon. A cold and hot buffet-style lunch comprising a variety of foods (representing a wide selection of food groups) will be offered after the last measurement of gas exchange and the participants will be instructed to eat ad libitum. |
| Glucose | 3 hours | Blood sample |
| Insulin | 3 hours | Blood sample |
| Glycerol | 3 hours | Blood sample |
Countries
Denmark
Outcome results
None listed