Personne :
Lemieux, Simone

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Lemieux
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Simone
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Université Laval. École de nutrition
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Résultats de recherche

Voici les éléments 1 - 10 sur 89
  • Publication
    Accès libre
    Validity and reliability of a brief selfreported questionnaire assessing fruit and vegetable consumption among pregnant women
    (BioMed Central, 2016-09-15) Vézina-Im, Lydi-Anne; Perron, Julie; Couillard, Charles; Godin, Gaston; Lemieux, Simone; Robitaille, Julie
    Background: Short instruments measuring frequency of specific foods, such as fruit and vegetable (FV), are increasingly used in interventions. The objective of the study was to verify the validity and test-retest reliability of such an instrument among pregnant women. Methods: Pregnant women from the region of Quebec City, Quebec, Canada, were recruited through e-mails sent to female students and employees of the local university from October 2014 to April 2015. To assess the validity of the fruit and vegetable questionnaire (FVQ) developed by Godin et al. (Can J Public Health 99: 494-498, 2008), pregnant women were asked in a first mailing to complete the FVQ assessing FV intake over the past 7 days and a 3-day estimated food record. A subsample (n¿=¿33) also gave a fasting blood sample and completed a validated semi-quantitative FFQ administered by a trained registered dietitian during a visit at the research center. FV intakes for all instruments were calculated in terms of servings of FV based on Canada’s Food Guide definition of a serving of fruit or vegetable. In order to assess its test-retest reliability, respondents were asked to complete the FVQ 14 days later in a second mailing. Results: Forty-eight pregnant women from all three trimesters completed the questionnaires in the first mailing. FV intake assessed using the FVQ was correlated to FV consumption measured using the food record (r¿=¿0.34, p¿=¿0.0180) and the FFQ (r¿=¿0.61, p¿=¿0.0002). Results were similar when controlling for energy intake and the experience of nausea in the past month. Only ß-cryptoxanthin was significantly correlated to FV intake assessed by the FFQ when adjusted for the presence of nausea (r¿=¿0.35, p¿=¿0.0471). Data on the test-retest reliability was available for 44 women and the intra-class coefficient for the FVQ was 0.72 at a mean 28-day interval. Conclusions: The FVQ has acceptable validity and test-retest reliability values, but seems to underestimate FV servings in pregnant women. It represents an interesting alternative for researchers or clinicians interested in estimating quickly FV intake among pregnant women, such as in large trials or during prenatal visits. The FVQ should however be coupled with other self-reported measures, such as a food record, for assessing precise individual FV intake.
  • Publication
    Accès libre
    Impact of a health-at-every-size intervention on changes in dietary intakes and eating patterns in premenopausal overweight women : results of a randomized trial
    (2012-08-01) Leblanc, Vicky; Corneau, Louise; Tremblay, Angelo; Lemieux, Simone; Bégin, Catherine; Provencher, Véronique
    Background & aims : Previous studies have shown improvements in eating behaviors following a Health-At-Every-Size approach (HAES). However, to our knowledge, no study has yet investigated how a HAES intervention could influence dietary intakes and eating patterns in overweight women. Therefore, objectives of this study were to determine changes in dietary intakes and eating patterns in premenopausal overweight women in response to a HAES intervention compared to a social support intervention and a control group, and then to determine whether changes in eating behaviors were associated with changes in dietary intakes and eating patterns in response to the HAES intervention.
  • Publication
    Accès libre
    Carotenoids as biomarkers of fruit and vegetable intake in men and women
    (Cambridge University Press, 2016-08-30) Couillard, Charles; Lamarche, Benoît; Lemieux, Simone; Vohl, Marie-Claude; Couture, Patrick
    High fruit and vegetable (FAV) intake is associated with a lower prevalence of chronic diseases. Identifying the ideal number of FAV servings needed to reduce chronic disease risk is, however, difficult because of biases inherent to common self-report dietary assessment tools. The aim of our study was to examine the associations between daily FAV intake and plasma carotenoid concentrations in men and women enrolled in a series of fully controlled dietary interventions. We compiled and analysed data from a group of 155 men and 109 women who participated in six fully controlled dietary interventions and compared post-intervention fasting plasma carotenoid (a-carotene, ß-carotene, ß-cryptoxanthin, lutein, lycopene, zeaxanthin) concentrations with regard to the daily FAV servings consumed by the participants. We found that plasma ß-cryptoxanthin, lutein and zeaxanthin concentrations were positively associated with daily FAV servings (P=0·005). However, daily FAV intake was negatively associated with plasma a-carotene (P<0·0005) and lycopene (P<0·0001) concentrations, whereas no association was noted with plasma ß-carotene. When men and women were analysed separately, we found that for any given number of FAV servings consumed women had higher circulating lutein concentrations compared with men (P<0·01). Significant sex×FAV (P<0·0001) and sex×dietary ß-cryptoxanthin (P<0·0005) interactions were also noted favouring higher plasma ß-cryptoxanthin concentrations in women than in men for a given FAV consumption. Results from these fully controlled dietary feeding studies indicate that plasma ß-cryptoxanthin and lutein concentrations can be used as robust biomarkers of FAV consumption. They also suggest the existence of sex differences influencing circulating ß-cryptoxanthin and lutein concentrations following FAV consumption.
  • Publication
    Accès libre
    A health at every size intervention improves intuitive eating and diet quality in Canadian women
    (Nutrition Publications, 2016-06-18) Carbonneau, Élise; Turcotte, Mylène; Lemieux, Simone; Mongeau, Lyne; Labonté, Marie-Ève; Paquette, Marie-Claude; Bégin, Catherine; Provencher, Véronique
    Background & aims: Health at Every Size® (HAES®) interventions focus on healthy lifestyle by promoting behavioral changes related to diet and physical activity while emphasizing self-acceptance and well-being through an empowerment and intuitive approach. The purpose of this study was to investigate the effects of a HAES® program on intuitive eating and diet quality in women. Methods: The HAES® intervention, offered by professionals from Health and Social Services Centers in Quebec (Canada), was composed of thirteen 3-h weekly meetings and a 6-h intensive day. For this study, 216 women (1.9% normal-weight, 21.1% overweight, 77.0% obese) who took part to the HAES program were compared to 110 women (3.9% normal-weight, 23.3% overweight, 72.8% obese) from a control group (waiting list). Intuitive eating was assessed using the Intuitive Eating Scale and diet quality was evaluated through the calculation of the Healthy Eating Index (HEI) from a validated web-based self-administrated food frequency questionnaire. Measurements were performed at baseline, post-intervention, and at one-year follow-up. Results: Women who participated in the HAES® program significantly increased their intuitive eating score compared to women in the control group at post-intervention and at follow-up (group by time interaction, p = 0.0002). A significant improvement in diet quality was also observed in the HAES® group in comparison with the control group at post-intervention (group by time interaction, p = 0.0139). The intuitive eating score and the HEI score were positively associated in the HAES® group at post-intervention (r = 0.20, p = 0.0237) and one-year follow-up (r = 0.22, p = 0.0359), but no such associations were noted in the control group (post-intervention, r = 0.04, p = 0.70; one-year follow-up, r = -0.15, p = 0.30). Conclusions: The HAES® program seems effective in improving intuitive eating and also favours improvements in diet quality. However, the association between intuitive eating and diet quality remains unclear, being positive and significant only after the HAES® intervention.
  • Publication
    Accès libre
    Development and validation of the perceived food environment questionnaire in a french-canadian population
    (Published on behalf of the Nutrition Society by CAB International, 2017-04-03) Carbonneau, Élise; Corneau, Louise; Lamarche, Benoît; Lemieux, Simone; Robitaille, Julie
    Objective: The present study aimed to develop and validate a questionnaire assessing perceived food environment in a French-Canadian population. Design: A questionnaire, the Perceived Food Environment Questionnaire, was developed assessing perceived accessibility to healthy (nine items) and unhealthy foods (three items). A pre-test sample was recruited for a pilot testing of the questionnaire. For the validation study, another sample was recruited and completed the questionnaire twice. Exploratory factor analysis was performed on the items to assess the number of factors (subscales). Cronbach's α was used to measure internal consistency reliability. Test-retest reliability was assessed with Pearson correlations. Setting: Online survey. Subjects: Men and women from the Québec City area (n 31 in the pre-test sample; n 150 in the validation study sample). Results: The pilot testing did not lead to any change in the questionnaire. The exploratory factor analysis revealed a two-subscale structure. The first subscale is composed of six items assessing accessibility to healthy foods and the second includes three items related to accessibility to unhealthy foods. Three items were removed from the questionnaire due to low loading on the two subscales. The subscales demonstrated adequate internal consistency (Cronbach's α=0·77 for healthy foods and 0·62 for unhealthy foods) and test-retest reliability (r=0·59 and 0·60, respectively; both P<0·0001). Conclusions: The Perceived Food Environment Questionnaire was developed for a French-Canadian population and demonstrated good psychometric properties. Further validation is recommended if the questionnaire is to be used in other populations.
  • Publication
    Accès libre
    Associations between eating patterns, dietary intakes and eating behaviors in premenopausal overweight women
    (Pergamon, 2012-04-01) Gagnon-Girouard, Marie-Pierre; Leblanc, Vicky; Corneau, Louise; Tremblay, Angelo; Lemieux, Simone; Bégin, Catherine; Provencher, Véronique
    The regulation of energy intake is complex and many biological, psychosocial and environmental influences have been identified. To our knowledge, no study has yet investigated how eating patterns could mediate associations between eating behaviors and self-reported energy intake in premenopausal overweight women. Therefore, objectives of this study were to examine associations between eating behaviors and eating patterns in premenopausal overweight women and to test if eating patterns could mediate the associations between eating behaviors and self-reported energy intake. Women completed a 3-day food record and the Three-Factor Eating Questionnaire was used to assess eating behaviors (dietary restraint, disinhibition, hunger). In the total sample of women, flexible restraint was negatively (r = - 0.18; p = 0.03) and binge eating severity was positively (r = 0.24; p = 0.004) associated with self-reported energy intake. Moreover, flexible restraint was positively associated with the proportion of energy intake at breakfast (r = 0.24; p = 0.004), whereas disinhibition and binge eating severity were positively associated with the proportion of energy intake from snacks consumed after 5:00 pm (r = 0.22, p = 0.007 and r = 0.22, p = 0.01, respectively). In addition, mediational analyses showed that proportion of energy intake from snacks consumed after 5:00 pm explained 24.1% of the association between binge eating severity and self-reported energy intake. In conclusion, these results suggest that eating patterns are important factors to consider in order to explain the associations between eating behaviors and self-reported energy intake.
  • Publication
    Accès libre
    Development of a web-based 24-h dietary recall for a french-canadian population
    (MDPI Pub., 2016-11-15) Jacques, Simon; Tessier-Grenier, Maude; Lapointe, Annie.; Corneau, Louise; Lamarche, Benoît; Laramée, Catherine; Lemieux, Simone; Robitaille, Julie
    Twenty-four-hour dietary recalls can provide high-quality dietary intake data, but are considered expensive, as they rely on trained professionals for both their administration and coding. The objective of this study was to develop an automated, self-administered web-based 24-h recall (R24W) for a French-Canadian population. The development of R24W was inspired by the United States Department of Agriculture (USDA) Automated Multiple-Pass Method. Questions about the context of meals/snacks were included. Toppings, sauces and spices frequently added to each food/dish were suggested systematically. A list of frequently forgotten food was also suggested. An interactive summary allows the respondent to track the progress of the questionnaire and to modify or remove food as needed. The R24W prototype was pre-tested for usability and functionality in a convenience sample of 29 subjects between the ages of 23 and 65 years, who had to complete one recall, as well as a satisfaction questionnaire. R24W includes a list of 2865 food items, distributed into 16 categories and 98 subcategories. A total of 687 recipes were created for mixed dishes, including 336 ethnic recipes. Pictures of food items illustrate up to eight servings per food item. The pre-test demonstrated that R24W is easy to complete and to understand. This new dietary assessment tool is a simple and inexpensive tool that will facilitate diet assessment of individuals in large-scale studies, but validation studies are needed prior to the utilization of the R24W.
  • Publication
    Restreint
    Validation of a french-canadian adaptation of the intuitive eating scale-2 for the adult population
    (Academic Press, 2016-05-11) Carbonneau, Élise; Carbonneau, Noémie; Bradette-Laplante, Maude; Lamarche, Benoît; Laramée, Catherine; Lemieux, Simone; Bégin, Catherine; Provencher, Véronique
    Intuitive eating is an adaptive eating style based on the reliance on physiological cues to determine when, what, and how much to eat. The Intuitive Eating Scale-2 (IES-2) is a validated four-subscale tool measuring the degree of adherence to intuitive eating principles. The present series of studies aimed at evaluating the psychometric properties of a French-Canadian adaptation of the IES-2 for the adult population. The factor structure, the reliability (internal consistency and test-retest), the construct validity, and the discriminant validity were evaluated in 334 women and 75 men from the Province of Québec, Canada, across two studies. A confirmatory factor analysis upheld that the four-factor structure of the original IES-2 was adequate for the present sample of French-Canadians. The scale demonstrated adequate internal consistency and test-retest reliability. Construct validity evidence was obtained with the significant associations between intuitive eating and psychological and eating-related variables. Intuitive eating was negatively associated with eating disorder symptomatology and with food- and weight-preoccupation, and positively associated with body-esteem and well-being. The French-Canadian IES-2 was also able to discriminate between genders and body mass index categories. The properties of this new version of the IES-2 are demonstrative of a reliable and valid tool to assess intuitive eating in the French-Canadian adult population of the Province of Québec.
  • Publication
    Accès libre
    Sex differences in the impact of the Mediterranean diet on systemic inflammation
    (BioMed Central, 2015-05-12) Bédard, Alexandra; Corneau, Louise; Lamarche, Benoît; Lemieux, Simone; Dodin-Dewailly, Sylvie
    Background Some intervention trials have reported a reduction in systemic inflammation with the Mediterranean diet (MedDiet) while others have observed no effect. Despite the fact that sex differences have been highlighted in the inflammatory regulation, it is still not known whether MedDiet exerts similar effects on systemic inflammation in men and women. The aim of this study was therefore to investigate sex differences in the effects of the MedDiet on high-sensitivity C-reactive protein (hs-CRP). Findings Participants were 35 men and 27 premenopausal women (24–53 years) presenting a slightly deteriorated lipid profile. All foods were provided to participants during a 4-week isocaloric MedDiet. At baseline, women had higher hs-CRP concentrations than men (P = 0.03). No sex difference was observed in hs-CRP response to the MedDiet (P for sex-by-time interaction = 0.36), with both men and women experiencing no change (respectively P = 0.62 and P > 0.99). When subgroups were formed according to hs-CRP concentration before the MedDiet phase, men with elevated baseline values (≥2 mg/l) experienced a reduction in hs-CRP over time with the MedDiet (−26.5 %) while an increase was observed in men with lower baseline values (+96.6 %; P for group-by-time interaction = 0.02). This pattern of change was not observed in women. Conclusions Results from this controlled feeding study suggest that men and women have similar effects from the MedDiet on systemic inflammation. The individual’s overall inflammatory status seems to influence these effects, but only in men.
  • Publication
    Accès libre
    Gender differences in the effects of repeated taste exposure to the Mediterranean diet : a 6-month follow-up study
    (Diétistes du Canada, 2016-08-19) Bédard, Alexandra; Corneau, Louise; Lemieux, Simone; Dodin-Dewailly, Sylvie
    Objectif. Déterminer si une intervention basée principalement sur l'exposition au régime méditerranéen, accompagnée de recommandations et d'outils pour encourager une alimentation saine, mène à des effets différents en ce qui concerne l'adhésion au régime alimentaire et la gestion du poids six mois après l'intervention chez des femmes et des hommes canadiens. Méthodes. Trente-huit hommes et 32 femmes préménopausées (tous âgés de 24 à 53 ans) ont été exposés au même régime méditerranéen expérimental pendant 4 semaines au cours desquelles la nourriture leur était fournie. Les participants ont aussi reçu des recommandations et des outils pour les aider à adhérer à un régime alimentaire sain, sans autre contact jusqu'à la visite de suivi 6 mois plus tard. Résultats. En comparaison au début de l'étude, le score méditerranéen a augmenté à la fin du suivi de 6 mois (effet temps P = 0,003) sans différence entre les sexes (interaction entre le sexe et le temps P = 0,97). Concernant les composantes du score méditerranéen, on a observé des différences entre les sexes, les hommes déclarant des changements dans plus de groupes alimentaires que les femmes. Bien que l'intervention n'était pas axée sur la gestion du poids, en comparaison au début, l'IMC des participants a diminué au cours de l'intervention tant chez les hommes que chez les femmes. Cependant, seules les femmes ont maintenu un IMC plus bas 6 mois après l'intervention. Conclusions. L'exposition de courte durée au régime méditerranéen favorise l'adhésion à ce modèle alimentaire chez les deux sexes et aide à la gestion du poids, particulièrement chez les femmes.