Fasting, Fed
Conditions
Brief summary
The Leeds Food Preference Questionnaire (LFPQ) is a computer-based task used to measure reward responses and preferences for images of food. The present study aims to develop a Spanish version of the LFPQ (ES-LFPQ) by examining its validity and repeatability under fasted and fed states.
Detailed description
The Leeds Food Preference Questionnaire (LFPQ) is a computer-based task for measuring reward responses (liking/wanting) and preferences for images of food. There are no cultural adaptation studies for the Spanish population to date in order to address its validity and repeatability in a test-retest design. The present study aim to develop a Spanish version of the LFPQ (ES-LFPQ), examine its outcomes under fasted and fed states; and test its reproducibility after one week. An online survey containing foods that were either low-fat sweet, high-fat sweet, low-fat savoury or high-fat savoury was first conducted among a sample of 96 Spanish adults (60.4 % women) to develop and validate a culturally appropriate food image database. 50 participants (25 men and 25 women) will participate in two identical trials where they will completed the ES-LFPQ under fasted and fed states (immediately after a standardised meal), at least one week apart.
Interventions
OTHERStandardized meal
Assessment of the validity of the ES-LFPQ: Each participant will complete the ES-LFPQ in before (fasted state) and after a standardized meal (fed state). Evaluation of the reproducibility of the ES-LFPQ: With at least one week of difference between tests, each participant will repeat the same protocol performed in the previous visit and under the same conditions.
Sponsors
Universidad de Granada
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE
Intervention model description
Participants are involved in two identical trials where they complete the ES-LFPQ under fasted and fed states (immediately after a standardised meal), at least one week apart.
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Being able to understand instructions, programs and questionnaires. * Being able to recognize the foods presented in at least 4 of the 5 photographs available for each category that make up the ES-LFPQ. * Living in Spain for at least 2 years
Exclusion criteria
* Being intolerant, allergic and/or having an aversion to the foods contained in the standardized meal. * Never eat the foods presented in at least 4 of the 5 photographs available for each category that make up the ES-LFPQ
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Taste appeal bias | 60 minutes | Bias scores for food taste (savoury or sweet) computed by subtracting the mean savoury scores from the mean sweet scores. Positive values indicate a preference for sweet foods, negative values indicate a preference for savoury foods and a score of 0 indicates an equal preference between taste categories |
| Relative preference | 60 minutes | The preference of a food in comparison with another food. Measured by punctuation on questionnaire ES-LFPQ. The score assigned to a specific food category based on a forced choice between pairs of food options in response to the question Which food do you desire to consume the most at present?. A positive score indicates a greater preference for a given food category relative to the alternatives in the task and a negative score indicates the opposite. A score of zero would indicate that the category is equally preferred. |
| Fat appeal bias | 60 minutes | Bias scores for food fat content (high or low) computed by subtracting the mean low-fat scores from the mean high-fat scores. Positive values indicate a preference for high-fat, negative values indicate a preference for low fat and a score of 0 indicates an equal preference between fat content. |
| Explicit liking | 60 minutes | The sensory pleasure elicited by contact with food. Measured with 0 to 100-mm visual analogue scale in response to the question How pleasant would it be to taste some of this food now? where 0 means Not at all and 100 means Extremely |
| Explicit wanting | 60 minutes | The motivation to consume a specific food manifesting explicitly (conscious and subjective). Measured with 0 to 100-mm visual analogue scale in response to the question How much do you want some of this food now? where 0 means Not at all and 100 means Extremely |
| Implicit wanting | 60 minutes | The motivation to consume a specific food manifesting implicitly (unconscious). Measured by punctuation on questionnaire ES-LFPQ. The score assigned to a specific food category based on a forced choice between pairs of food options and taking into account reaction time, in response to the question Which food do you desire to consume the most at present?. A positive score indicates a greater preference for a given food category relative to the alternatives in the task and a negative score indicates the opposite. A score of zero would indicate that the category is equally preferred. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Fullness | 60 minutes | The degree of satisfaction and/or fullness following food consumption. Measured with 0 to 100-mm visual analogue scale in response to the question How full do you feel now? where 0 means Not at all and 100 means Extremely |
| Hunger | 60 minutes | The subjective sensation described as the primary motivation to eat. Measured with 0 to 100-mm visual analogue scale in response to the question How hungry do you feel now? where 0 means Not at all and 100 means Extremely |
Countries
Spain
Contacts
Primary ContactJonatan R. Ruiz, Phd
Outcome results
None listed