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Stress and Eating Behavior Among University Students - an Randomized Controlled Trial (StrEat)

14 marzo 2016 aggiornato da: Anders M Sjödin, MD, PhD, Professor, University of Copenhagen

StrEat - Stress and Eating Behavior

The high worldwide prevalence of overweight and obesity as well as metabolic and disease consequences, are well-documented. The positive energy balance underlying obesity is attributable to excess energy intake and/or insufficient energy expenditure. However, it seems that the increase in mean body weight can be sufficiently explained by increases in mean energy intake. It has been proposed that this overeating is partly caused by increased availability of highly processed energy dense, high reward foods. Psychosocial stress and sleep insufficiency is pervasive in industrialized societies. A growing body of evidence suggests stress to be involved in obesity, although it is unknown whether stress is a cause or consequence. Stress affecting dietary intake; skewing intake towards greater consumption of highly palatable energy dense foods, also referred to as high reward foods. A causal relationship between stress and reward seeking behavior is supported by findings from animal studies reporting rewarding behavior by consumption of sweet tasting food in response to a stressor.

Our aim is to investigate differences in purchases of particular food-items in free living individuals, during a stressful (upcoming exam) and non-stressful (no upcoming exam) period.

Hypothesis: Participants will purchase more high reward foods during the pre-exam period, compared to the control non-exam period.

Panoramica dello studio

Stato

Sconosciuto

Condizioni

Intervento / Trattamento

Descrizione dettagliata

STUDY METHODS

Study design:

The study is a randomized controlled two-armed cross-over intervention study. The study is carried out in 50 healthy university students, both genders. In random order the participants will be investigated during stressful-period (prior to an exam) and a non-stressful (control period) period. Each participant will take part in all together four visits, two in the stressful period and two visits in the non-stressful period.

The study will take place, at the Department of Nutrition, Exercise and Sports (NEXS), Faculty of Science at the University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C. Recruitment will take place at the University of Copenhagen

STATISTICAL ANALYSES Analysis of the primary outcome (food choices) will be based on an ANCOVA-type linear mixed model with the intervention and allocation order as the fixed effect and person as the random effect. Analysis will be performed using the software R, SAS, STATA or SPSS. Analyses, data processing and writing of the article are expected to extend over the study period and a year beyond.

Tipo di studio

Interventistico

Iscrizione (Anticipato)

50

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Luoghi di studio

  • Danimarca
      • Frederiksberg, Danimarca, 1958
        • Reclutamento
        • Nutrition, Exercise and Sports
        • Contatto:
        • Contatto:
          • Julie B Schmidt, PhD
          • Numero di telefono: 0045 35333650
          • Email: jbs@nexs.ku.dk

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Bambino
  • Adulto
  • Adulto più anziano

Accetta volontari sani

No

Sessi ammissibili allo studio

Tutto

Descrizione

Inclusion Criteria:

  • Healthy, weight stabile (defined as no weight gain/loss >3 kg during the past three months) students at the University of Copenhagen
  • Age > 18 years, men and women

Exclusion Criteria:

  • Purposefully seeking to lose or gain weight
  • Diabetes.
  • Blood donation < 1 week prior to the study and during the study
  • Lactation, Pregnancy or planning of pregnancy during the study
  • Inability, physically or mentally, to comply with the procedures required by the study- protocol, as evaluated by the investigator
  • Participation in other clinical trials during the study
  • Diagnosed with stress
  • Daily use of medication influencing biomarkers of stress

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Scienza basilare
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione incrociata
  • Mascheramento: Separare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Comparatore attivo: University Exam Period
This visit takes place the week before an exam at the university assuming that this will induce a stress response. Measurements (see description elsewhere) are being taken within 1-2 weeks prior to an university exam.
Altro: University exam-period
This visit takes place one week prior to an exam at the university assuming that students will be stressed in this period.
Comparatore placebo: University Non-exam Period
This visit takes place several weeks post and prior to an exam at the university assuming that students will not be stressed in this period. Measurements (see description elsewhere) are being taken in a control-period without exams (at least 4 weeks after and 4 weeks prior to an exam)
Altro: University non-exam-period
This visit takes place several weeks post and prior to an exam at the university assuming that students will not be stressed in this period.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Differences in purchase of high reward foods from the gift certificates between the exam-period and non-exam period.
Lasso di tempo: The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
The classification will be done blinded for the outcome assessor.
The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Differences in Heart Rate Variability (HRV) based on a one minute breathing test between the exam-period and non-exam period.
Lasso di tempo: The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
The classification will be done blinded for the outcome assessor.
The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
Differences in morning cortisol measured in saliva between the exam-period and non-exam period.
Lasso di tempo: The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
The classification will be done blinded for the outcome assessor.
The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
Differences in insulin resistance measured by homeostatic model assessment (HOMA-IR) calculated from insulin and glucose measured in plasma between the exam-period and non-exam period.
Lasso di tempo: The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
The analyses will be done blinded for the outcome assessor.
The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
Differences in Perceived Stress (Perceived Stress Scale, PSS) between the exam-period and non-exam period.
Lasso di tempo: The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
The analyses will be done blinded for the outcome assessor.
The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
Differences in eating behavior using the "Three factor eating questionnaire" between the exam-period and non-exam period.
Lasso di tempo: The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
The analyses will be done blinded for the outcome assessor.
The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
Differences in sleep habits using the "Pittsburgh sleep quality index" between the exam-period and non-exam period.
Lasso di tempo: The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
The analyses will be done blinded for the outcome assessor.
The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
Differences in sleep duration measured by ActiGraph between the exam-period and non-exam period.
Lasso di tempo: The outcome is assessed twice, in the exam period (one week prior to an exam) and in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
The analyses will be done blinded for the outcome assessor.
The outcome is assessed twice, in the exam period (one week prior to an exam) and in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
Differences in activity measured by ActiGraph between the exam-period and non-exam period.
Lasso di tempo: The outcome is assessed twice,in the exam period (one week prior to an exam) and in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
The analyses will be done blinded for the outcome assessor.
The outcome is assessed twice,in the exam period (one week prior to an exam) and in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
Differences in blood pressure between the exam-period and non-exam period.
Lasso di tempo: The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
The analyses will be done blinded for the outcome assessor.
The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
Differences in Perceived Stress ( questionaire: RESTQ-76 sport) between the exam-period and non-exam period.
Lasso di tempo: The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)
The analyses will be done blinded for the outcome assessor.
The outcome is assessed twice, once in the exam period (one week prior to an exam) and once in the non-exam period (four to five weeks prior and post an exam ) Data are analyzed after last subject last visit (May 2016)

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

University of Copenhagen

Investigatori

  • Cattedra di studio: Anders M Sjödin, PhD, University of Copenhagen, NEXS
  • Investigatore principale: Mads F Hjorth, PhD, University of Copenhagen
  • Investigatore principale: Julie B Schmidt, PhD, University of Copenhagen, NEXS

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio

1 febbraio 2016

Completamento primario (Anticipato)

1 agosto 2016

Completamento dello studio (Anticipato)

1 agosto 2016

Date di iscrizione allo studio

Primo inviato

4 marzo 2016

Primo inviato che soddisfa i criteri di controllo qualità

14 marzo 2016

Primo Inserito (Stima)

15 marzo 2016

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Stima)

15 marzo 2016

Ultimo aggiornamento inviato che soddisfa i criteri QC

14 marzo 2016

Ultimo verificato

1 marzo 2016

Maggiori informazioni

Termini relativi a questo studio

Parole chiave

Altri numeri di identificazione dello studio

  • B321

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

No

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

prodotto fabbricato ed esportato dagli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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