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Does Food Labeling Influence Long-term Food Intake and Eating-related Variables in Women? (MENU)

31. August 2015 aktualisiert von: Véronique Provencher, Laval University
Weight management is a critical issue in developed countries where the prevalence of obesity is always increasing. While the mismatch of energy intake and energy expenditure is recognized as a leading cause of obesity, knowledge related to the determinants of healthy eating patterns are still an important issue to further address. Various nutrition-education campaigns have been implemented as a way to increase knowledge about healthy foods and facilitate the adoption of better eating behaviors. There is currently social and politic pressure on health authorities to increase availability of nutrition information as a way to tackle the obesity epidemic. Does nutrition information on food labels really contribute to improving dietary intake among the population and to helping them to better manage their body weight? Some evidence suggests that describing foods as healthy might have unintended enhancement effects on the acute amount of food and calories consumed. A better understanding of how and why nutrient and calorie labels influence acute and chronic intake is thus needed. This study investigate how providing nutritional information on food labels influences intake and eating-related variables over a 10-day period among women characterized by varying levels of adiposity. As it has never been investigated before, the present research will provide important knowledge on the long-term impacts of different food labeling strategies on the regulation of food intake. It will also help to determine whether weight status could influence the effects of perceptions about foods on intake, so that the investigators can identify individuals who mostly tend to overeat in specific situations. Consumer advocacy organizations are urging government to adopt policies regarding food labeling. Such research is thus of great relevance for the promotion of healthy body weight at the population level, as it will clearly contribute to assess how food labels should be used by health governing bodies in the context of the obesity epidemic.

Studienübersicht

Status

Abgeschlossen

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

Much effort has been invested to educate Canadians about the importance of healthy eating and active living. Various food labeling strategies are currently used (e.g. nutrient-content claims approved by Health Canada), or strongly suggested (e.g. calorie information on restaurant menus), as tools to increase knowledge about healthy food choices and to help consumers make more so-called healthier choices. Does nutrition information on food labels really contribute to improve dietary intakes among the population? Some evidence does suggest that food labeling could influence consumer's choices and purchases. But, consumers remain confused about what healthy eating should be, and about how many calories they should be eating per day. Data suggest that only 50% of them truly understand and use food labels. Results regarding the impact of food labeling on intake are less convincing. We have recently shown that perceiving a snack food as healthy increased intake of that food by 35% in female students. Health halos promoted by nutrition information may lead consumers to draw misleading inferences from food labels. Considering current public pressure on health authorities to increased availability of nutrition information as a way to attack the obesity epidemic, long-term impact of food labeling strategies on food intake regulation represents a critical key issue that have not been yet investigated.

The general objective of the present research proposal is to investigate how providing nutritional information on food labels influences intake and eating-related variables over a 10-day period among women. We will more specifically:

  1. Compare the impact of 1) nutrient quality and 2) calorie content food labels vs. "no label" condition on mean ad libitum intake and appetite sensations before/after meals over a 10-day period in women.
  2. Examine how body weight (normal versus obesity) influences the impact of the nutrient quality and calorie content food labels on mean ad libitum intake and appetite sensations over a 10-day period in women.
  3. Verify whether types of food labels influence attitudes towards meals offered (i.e. perceived healthiness, appropriateness, palatability) over a 10-day period in women.

Studientyp

Interventionell

Einschreibung (Tatsächlich)

160

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

  • Kanada
    • Quebec
      • Québec city, Quebec, Kanada, G1V 0A6
        • Institute of Nutraceuticals and Functionnal Foods (INAF)

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

25 Jahre bis 65 Jahre (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Ja

Studienberechtigte Geschlechter

Weiblich

Beschreibung

Inclusion Criteria:

  • stable weight (± 2.5 kg) for at least 3 months prior to the study.
  • BMI between 18.5 and 25 kg/m2 for the non-obese group and BMI between 30 and 40 kg/m2 for the obese group.

Exclusion Criteria:

  • pregnant or lactating.
  • aversion to the foods in the study.
  • taking medication (e.g., corticosteroids,tricyclic antidepressants, atypical antipsychotics) and present chronic health problems (e.g.,food allergies, eating disorders, diabetes, hyperthyroidism) that could affect appetite measurements and food intake.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Zuteilung: Zufällig
  • Interventionsmodell: Fakultätszuweisung
  • Maskierung: Single

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Sonstiges: Non-obese
Non-obese women (BMI between 18.5 and 25 kg/m2)
Verhalten: Nutrient-label
A label indicating that the lunch they will eat is low in saturated fat and free from trans fat will be posted on the containers.
Verhalten: Calorie-label
A label indicating the amount of calories for a fixed serving plus information about daily caloric requirement ("The recommended daily caloric intake for an average adult is 2000 calories") will be posted on the containers.
Verhalten: No label
Lunches will be free from labels, so that no nutritional information will be provided to the participants(control group).
Sonstiges: Obese
Obese women (BMI between 30 and 40 kg/m2)
Verhalten: Nutrient-label
A label indicating that the lunch they will eat is low in saturated fat and free from trans fat will be posted on the containers.
Verhalten: Calorie-label
A label indicating the amount of calories for a fixed serving plus information about daily caloric requirement ("The recommended daily caloric intake for an average adult is 2000 calories") will be posted on the containers.
Verhalten: No label
Lunches will be free from labels, so that no nutritional information will be provided to the participants(control group).

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Mean ad libitum intake
Zeitfenster: Up to 2 years after the beginning of the study
The mean amount per day of food eaten during the 10-day period (grams and calories).
Up to 2 years after the beginning of the study

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Appetite sensations
Zeitfenster: Up to 2 years after the beginning of the study
Visual-analogue ratings of hunger and fullness(measured in millimeters) before and after each meal.
Up to 2 years after the beginning of the study

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Laval University

Mitarbeiter

Canadian Institutes of Health Research (CIHR)

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn

1. August 2011

Primärer Abschluss (Tatsächlich)

1. Mai 2013

Studienabschluss (Tatsächlich)

1. April 2015

Studienanmeldedaten

Zuerst eingereicht

16. Mai 2012

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

22. Mai 2012

Zuerst gepostet (Schätzen)

24. Mai 2012

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Schätzen)

1. September 2015

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

31. August 2015

Zuletzt verifiziert

1. August 2015

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Schlüsselwörter

Andere Studien-ID-Nummern

  • INAF 2011-088

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