Tato stránka byla automaticky přeložena a přesnost překladu není zaručena. Podívejte se prosím na anglická verze pro zdrojový text.

Effects of a Six-Day Whole-Diet Intervention on Taste Perception and Dietary Behaviour in Young Adults

25. srpna 2026 aktualizováno: YookChin Chia, Sunway University

Effects of a Six-Day Whole-Diet Intervention on Taste Perception, Dietary Behaviour, and Individual Differences in Young Adults

This study aims to investigate the effects of a specific diet modification on the pleasantness, desire, and saltiness intensities of selected foods and an ad libitum breakfast buffet through a randomized controlled trial with three arms. Participants will be randomized to either increase, decrease, or make no change to their daily intake of foods with a specific taste for six consecutive days, and outcomes will be assessed at two time points, at baseline (Day 1) and after the intervention (Day 7), alongside measures of adherence to the assigned diet. Each participant will receive an instruction to modify specific aspects of their diets for six days. This study is crucial for addressing diet-related health issues such as obesity, diabetes, and hypertension in Malaysia. By providing robust evidence on the effectiveness of specific diet modifications, the study can inform public health policies, improve dietary recommendations tailored to Malaysian cultural preferences, and promote long-term benefits.

Přehled studie

Postavení

Dokončeno

Podmínky

Intervence / Léčba

Detailní popis

Excess dietary sodium intake is a major modifiable risk factor for hypertension and cardiovascular disease. Public health strategies often assume that reducing exposure to salty foods will lower salt preference and encourage healthier food choices through sensory adaptation; however, evidence from whole-diet interventions conducted under real-world conditions remains limited and inconsistent. Dietary sodium consumption substantially exceeds recommended levels in many countries, including Malaysia, and contributes to the global burden of hypertension and cardiovascular disease. Public health sodium reduction programmes are based on the premise that lowering exposure to salty foods can gradually shift taste preferences towards less salty diets through sensory adaptation. However, evidence supporting this mechanism is mixed, and most previous studies have relied on controlled laboratory settings, single foods, or salt solutions rather than whole-diet interventions.

The study aims to determine whether short-term changes in dietary sodium exposure are sufficient to modify salt taste perception and related eating behaviors and to identify factors associated with individual variation in these responses. The primary objective is to determine whether increasing or decreasing exposure to salty foods over six days alters salt-related taste perception compared with maintaining usual dietary habits. Secondary objectives are to examine changes in sodium intake and appetite-related outcomes and to explore demographic and anthropometric factors associated with taste perception responses. The findings will improve understanding of short-term sensory adaptation to dietary sodium exposure and provide evidence relevant to sodium reduction policies, food reformulation efforts, and behavioral interventions aimed at reducing population sodium intake.

Typ studie

Intervenční

Zápis (Aktuální)

115

Fáze

  • Nelze použít

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní místa

  • Malajsie
    • Selangor
      • Subang Jaya, Selangor, Malajsie, 47500
        • Department of Biomedical Sciences, Sir Jeffrey Cheah Sunway Medical School, Faculty of Medical and Life Sciences, Sunway University,.

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

  • Dospělý

Přijímá zdravé dobrovolníky

Ano

Popis

Inclusion Criteria:

  • Being a student or staff member of Sunway University or Sunway College
  • Aged 18-35 years
  • Able to communicate in English
  • Regularly consuming breakfast
  • Being willing and able to comply with all study procedures.

Exclusion Criteria:

  • Vegan/smokers/with chronic medical conditions (e.g., hypertension or diabetes)
  • Food allergies
  • Pregnant or breastfeeding
  • Currently dieting or attempting to lose weight
  • History of smell or taste impairment
  • Use medications or supplements that could affect taste perception.

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Prevence
  • Přidělení: Randomizované
  • Intervenční model: Paralelní přiřazení
  • Maskování: Dvojnásobek

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Experimentální: Increase salty food consumption
Participants increase intake of salty foods and beverages.
Jiný: Experimental: Increased Salty Food Intake
Participants assigned to the increase group were instructed to increase their consumption of salty-tasting foods and beverages for six consecutive days (Days 1-6) while living in their usual environment. Participants selected their own foods and beverages but were encouraged to choose options consistent with a higher-salt dietary pattern. Written guidance and meal examples were provided to support implementation. Outcomes were assessed at baseline (Day 1) and after the intervention (Day 7).
Experimentální: Decrease salty food consumption
Participants decrease intake of salty foods and beverages.
Jiný: Experimental: Decrease Salty Food Intake

Participants assigned to the decrease group were instructed to reduce their consumption of salty-tasting foods and beverages for six consecutive days (Days 1-6). Participants selected their own foods and beverages while attempting to minimize intake of high-salt items according to written guidance and examples. Outcomes were assessed at baseline (Day 1) and after the intervention (Day 7).

A six-day, self-directed dietary intervention designed to reduce exposure to salty foods and beverages under free-living conditions. Participants modified their habitual diet without direct provision of foods by the investigators
Aktivní komparátor: Maintain usual diet
Participants continue their habitual dietary practices
Jiný: Active Comparator: Maintain Usual Diet

Participants assigned to the maintain group were instructed to continue their usual eating habits and dietary practices for six consecutive days without making deliberate changes to salty food consumption. Outcomes were assessed at baseline (Day 1) and after the intervention (Day 7).

A six-day control condition in which participants maintained their habitual dietary intake under free-living conditions.

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Pleasantness
Časové okno: Pleasantness ratings will be collected at baseline (Day 1) and Day 7

Pleasantness ratings, indicated after tasting three salty foods (Foods 1-3) and three non-salty foods (Foods 4-6), will be measured on a 10-point Likert scale.

The rating scores will be averaged across the six test foods to generate composite scores. The aggregated pleasantness score will be used to capture overall taste responses rather than food-specific effects, consistent with whole-diet taste exposure theory.
Pleasantness ratings will be collected at baseline (Day 1) and Day 7
Desire to eat
Časové okno: Desire to eat ratings will be collected at baseline (Day 1) and Day 7

Desire to eat ratings, indicated after tasting three salty foods (Foods 1-3) and three non-salty foods (Foods 4-6), will be measured on a 10-point Likert scale.

The rating scores will be averaged across the six test foods to generate composite scores. The aggregated pleasantness score will be used to capture overall taste responses rather than food-specific effects, consistent with whole-diet taste exposure theory.
Desire to eat ratings will be collected at baseline (Day 1) and Day 7
Saltiness intensity
Časové okno: Saltiness intensity ratings will be collected at baseline (Day 1) and Day 7

Saltiness intensity ratings, indicated after tasting three salty foods (Foods 1-3) and three non-salty foods (Foods 4-6), will be measured on a 10-point Likert scale.

The rating scores will be averaged across the six test foods to generate composite scores. The aggregated pleasantness score will be used to capture overall taste responses rather than food-specific effects, consistent with whole-diet taste exposure theory.
Saltiness intensity ratings will be collected at baseline (Day 1) and Day 7

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Dietary sodium intake
Časové okno: Dietary sodium intake is estimated at baseline (Day 1) and Day 7
Dietary sodium intake will be estimated from pre- and post-foods consumed by each participant.
Dietary sodium intake is estimated at baseline (Day 1) and Day 7
Sodium Density
Časové okno: Sodium density will be assessed at baseline (Day 1) and Day 7
Sodium density (mg/g) will be computed to distinguish compositional from volumetric changes in sodium intake.
Sodium density will be assessed at baseline (Day 1) and Day 7
Appetite
Časové okno: Appetite will be assessed at the baseline (Day 1) and Day 7
Appetite will be rated on 0-10 Likert scales at the start of each test session.
Appetite will be assessed at the baseline (Day 1) and Day 7
Adherence
Časové okno: Adherence was assessed only on Day 7
Adherence is a self-reported measure rated on a 10-point Likert scale.
Adherence was assessed only on Day 7

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Sunway University

Vyšetřovatelé

  • Vrchní vyšetřovatel: Yee-How Say, PhD, Department of Biomedical Sciences, Sir Jeffrey Cheah Sunway Medical School, Faculty of Medical and Life Sciences, Sunway University, 5, Jalan Universiti, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia.

Publikace a užitečné odkazy

Osoba odpovědná za zadávání informací o studiu tyto publikace poskytuje dobrovolně. Mohou se týkat čehokoli, co souvisí se studiem.

Obecné publikace

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia (Aktuální)

1. dubna 2026

Primární dokončení (Aktuální)

31. července 2026

Dokončení studie (Aktuální)

31. července 2026

Termíny zápisu do studia

První předloženo

15. července 2026

První předloženo, které splnilo kritéria kontroly kvality

22. července 2026

První zveřejněno (Aktuální)

24. července 2026

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

27. srpna 2026

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

25. srpna 2026

Naposledy ověřeno

1. srpna 2026

Více informací

Termíny související s touto studií

Klíčová slova

Další relevantní podmínky MeSH

Další identifikační čísla studie

  • SunwayU

Plán pro data jednotlivých účastníků (IPD)

Plánujete sdílet data jednotlivých účastníků (IPD)?

NE

Popis plánu IPD

The principal investigator will make the data available on reasonable request

Informace o lécích a zařízeních, studijní dokumenty

Studuje lékový produkt regulovaný americkým FDA

Ne

Studuje produkt zařízení regulovaný americkým úřadem FDA

Ne

Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .

Předplatit