Flaveur: Awakening to the Taste of Food Among Restrained Women

Sponsor

Laval University (Other)

Overall Status

Completed

CT.gov ID

NCT01535846

Collaborator

Canadian Foundation for Dietetic Research (CFDR) (Other)

Enrollment

Location

Arms

Duration (Months)

2.2

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

Energy-restricted diets often require dieting rules, which forced the dieter to eat according to cognitive norms, which increase his vulnerability to external food cues. Allowing the recognition of internal hunger and satiety cues by using conscious food tasting could be helpful among restrained eaters to facilitate an internalized regulation of food intake.

The objectives of the proposed study are to investigate among restrained women whether conscious food tasting can influence 1) attitudes and behaviors associated with food and eating; 2) reliance on hunger and satiety signals; and 3) development of taste and olfactory memory.

Females (n=50) will be randomly assigned to: 1) experimental group (conscious food tasting intervention) (n=24), or 2) control group (n=26). The conscious food tasting intervention will be conducted by a registered dietitian into groups of ten to twelve women during six weekly 2-hour workshops. Women in the control group will not receive any intervention. Measurements will be taken at baseline, at the end of the intervention period, and at 12-week post-intervention. Restraint Scale, Three-Factor Eating Questionnaire, Mindful Eating Questionnaire, Intuitive Eating Scale, Body-Esteem Scale and Rosenberg Self-Esteem Scale will measure attitudes and behaviors associated with food and eating as well as some aspects related to psychological functioning. The Intuitive Eating Scale and a snack-meal taste rating task (visual analogue scales) will assess internal hunger/satiety cues. Vocabulary used to describe the foods will be recorded from the snack-meal taste rating task and use to assess taste and olfactory memory. Sensory capabilities will be assessed by odour detection and identification test, and a taste detection test.

The proposed study will provide a better understanding of the effects of conscious food tasting on eating attitudes and behaviors, which is relevant to dietetic practice as it could help to promote sustainable healthy eating habits.

Condition or Disease	Intervention/Treatment	Phase
Other Eating Disorders	Behavioral: Conscious food tasting intervention	N/A

Detailed Description

In the experimental group (n=24), the conscious food tasting intervention will be conducted by a registered dietitian into small groups of ten to twelve women during six weekly 2-hour workshops. Workshops will be taking place in a well-ventilated room to insure that there are no extraneous odours or noises that may hamper the activities involving senses. To enhance feeling of belonging to the group as well as the confidence within each participant, time will be allowed for participants' introduction at the beginning of the first workshop. Specific themes will be addressed during each of the six workshops. During the first and second workshops, theoretical notions about weight management and energy-restricted diets, restrained eating versus intuitive and mindful eating, appetite sensations, sensory-specific satiety and weight-related issues will be presented by the registered dietitian. The presentation will be interactive, so that discussion and questions will be foster throughout the workshops. From the third workshop, basic knowledge and activities related to sensory food perceptions will be introduced. Prior to food tasting activities, participants will be advised to avoid drinking coffee or eating chocolate and any other foods with a strong or persistent taste, and to avoid wearing perfumes, scented lotions and creams as all these conditions could affect sensory perceptions. During the third workshop, theoretical notions about taste qualities (sweet, salt, sour, bitter) will be firstly addressed. A taste activity will then be done using aqueous solutions containing different concentrations of a taste compound. The objective of this activity will be to let participants experience their own taste sensitivity level so that they can identify at which concentration level they can detect different tastes. During the fourth and fifth workshop, theoretical and practical notions about food tasting techniques will be addressed. The various roles played by other senses (i.e., sight, hearing, touch, smell) during food tasting will also be experienced by the participants using practical activities. For that purpose, various foods will be used such as herbs and spices, cheeses, fruits, chocolate and chips. In addition, one of the most difficult aspects of tasting evaluation is to find the right words that well-described food perception. Each participant will thus be guided by the registered dietitian and discuss about some of the terminology of tasting in order to find out appropriate terms they could be used to describe the tasted foods. A list of these descriptive words will then be created, so that they can have their own list of reference. At the end of each food tasting activities, a discussion will be led by the registered dietitian about appetite sensations, emotions and recollection of memories associated with the tasted foods. As enjoying eating involve more than sensory stimulation from the foods, the last workshop will discuss the cognitive, social and emotional aspects related to tasting and pleasure while eating (e.g. dichotomized thinking about healthy eating, eating with family and friends, and affective processes in eating behaviors) in order to integrate these eating-related aspect to a peaceful relationship with foods.

In the waiting-list control group (n=26), women will be instructed to follow their usual lifestyle habits for the duration of the study. Over the study period, these women will not receive any form of contact from the research team, with the exception of post treatment testing sessions (T=2 and T=3), as performed in the experimental group. To control for potential confounding effects of other treatments, the investigators will ask to women from the waiting-list control group to report all consultations with health professionals and/or any forms of intervention that they received during the course of the study. After the final testing session at 12-week post-intervention (T=3), women from the control group will be invited to participate in the conscious food tasting intervention on a voluntary basis.

Study Design

Study Type:

Interventional

Actual Enrollment :

50 participants

Allocation:

Randomized

Intervention Model:

Parallel Assignment

Masking:

None (Open Label)

Official Title:

Awakening to the Taste of Food: What Are the Effects on Cognitions and Behaviors About Food and Eating Among Restrained Women?

Study Start Date :

Jan 1, 2011

Actual Primary Completion Date :

Apr 1, 2012

Actual Study Completion Date :

Dec 1, 2012

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Conscious food tasting intervention Instead of focusing on dieting rules to restrict food intake, paying attention to sensory stimulation allow the recognition of internal cues of hunger and satiety which can be helpful to facilitate a more internalized regulation of food intake among restrained eaters. In the experimental group, the conscious food tasting intervention will be conducted by a registered dietitian into small groups of ten to twelve women during six weekly 2-hour workshops. Workshops will be taking place in a well-ventilated room to insure that there are no extraneous odours or noises that may hamper the activities involving senses.	Behavioral: Conscious food tasting intervention Six weekly 2-hour workshops
No Intervention: Control

Arm

Intervention/Treatment

Experimental: Conscious food tasting intervention

Instead of focusing on dieting rules to restrict food intake, paying attention to sensory stimulation allow the recognition of internal cues of hunger and satiety which can be helpful to facilitate a more internalized regulation of food intake among restrained eaters. In the experimental group, the conscious food tasting intervention will be conducted by a registered dietitian into small groups of ten to twelve women during six weekly 2-hour workshops. Workshops will be taking place in a well-ventilated room to insure that there are no extraneous odours or noises that may hamper the activities involving senses.

Behavioral: Conscious food tasting intervention

Six weekly 2-hour workshops

No Intervention: Control

Outcome Measures

Primary Outcome Measures

Attitudes and behaviors associated with food and eating [Up to 3 months]
To evaluate the effects of conscious food tasting on attitudes and behaviors associated with food and eating. This measure is made through a questionnaire.

Secondary Outcome Measures

Physical signals for hunger and satiety [Up to 3 months]
To assess whether conscious food tasting affect reliance on physical signals for hunger and satiety (rather than external cues). This measure is made through a questionnaire.
Development of taste and olfactory memory [Up to 3 months]
To evaluate the effects of conscious food tasting on the development of taste and olfactory memory. This measure is made through a questionnaire.

Eligibility Criteria

Criteria

Ages Eligible for Study:

25 Years to 60 Years

Sexes Eligible for Study:

Female

Accepts Healthy Volunteers:

Yes

Inclusion Criteria:

females aged 25 to 60 year-old
stable weight (± 2.5 kg) for at least 2 months
restrained eaters (scores of 15 or higher at the Restraint Scale)

Exclusion Criteria:

food allergies
taking medication (e.g., corticosteroids, tricyclic antidepressants, atypical antipsychotics)
chronic health problems (e.g., eating disorders, type 1 and type 2 diabetes, hyperthyroidism)
pregnant or lactating
smoker