- ICH GCP
- Register voor klinische proeven in de VS.
- Klinische proef NCT03917810
Acute Responses to Manipulating Dietary Carbohydrate Content on Free-living Physical Activity Energy Expenditure
Dietary sugar and carbohydrate intakes will be manipulated for 3 days in a randomised crossover design. All food will be provided. Free-living physical activity energy expenditure will be measured using combined heart rate and accelerometry. Metabolic and appetite/mood responses to 3 days on each diet will be measured.
Each participant will undergo 3 days of each diet:
- Moderate sugar - reflecting the composition of a typical European diet
- Low sugar - similar macronutrient composition of a typical European diet but with <5% energy intake from free sugars (as per government guidelines)
- Low carbohydrate - low carbohydrate diet with <5% energy intake from sugar and <8% energy intake from carbohydrate, replacing carbohydrate energy with fat
Studie Overzicht
Gedetailleerde beschrijving
Guidelines calling for dietary free sugars to be reduced have been formulated from evidence that diets high in sugar are associated with high energy intake. In theory, by reducing the intake of sugars, calorie surplus will be reduced and energy balance will be maintained. However, when referring to interventions/behaviours that influence energy balance, both sides of the energy balance equation need to be considered. Alterations in nutrients may influence aspects of energy expenditure, not solely energy intake, and this may have implications for the efficacy of guidelines seeking to influence energy intake.
It is important to consider energy expenditure in the context of health. The most variable component of energy expenditure between individuals is physical activity energy expenditure (PAEE), which varies from ~600-2100 kcal per day in men of a similar demographic. Current guidelines do not regard the effect that changing dietary sugar might have on PAEE and therefore total energy expenditure.
Furthermore, there is increasing interest in restricting overall carbohydrate intake to treat metabolic disease or achieve ketogenesis. Very little is known about nutrition-physical activity interactions with this type of intervention.
This study will prescribe 3 diets to healthy males for 3 days in a randomised crossover design, where each participant will consume each of the diets. All food will be prepared and provided by the study team. The diets are as follows:
- Moderate sugar - reflecting the composition of a typical European diet
- Low sugar - similar macronutrient composition of a typical European diet but with <5% energy intake from free sugars (as per government guidelines)
- Low carbohydrate - low carbohydrate diet with <5% energy intake from sugar and <8% energy intake from carbohydrate, replacing carbohydrate energy with fat
Studietype
Inschrijving (Werkelijk)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
-
-
Somerset
-
Bath, Somerset, Verenigd Koninkrijk, BA2 7AY
- University of Bath
-
-
Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Body mass index 18.5-29.9 kg∙m-2
- Age 18-65 years
- Male
- Able and willing to provide informed consent and safely comply with study procedures
- No anticipated changes in physical activity during the study (e.g. holidays)
Exclusion Criteria:
- Any reported condition or behaviour deemed either to pose undue personal risk to the participant or introduce bias
- Any diagnosed metabolic disease (e.g. type 1 or type 2 diabetes)•Any reported use of substances which may pose undue personal risk to the participants or introduce bias into the experiment
- Lifestyle not conforming to standard sleep-wake cycle (e.g. shift worker)
- Any reported recent (<6 months) change in body mass (±3%)
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Fundamentele wetenschap
- Toewijzing: Gerandomiseerd
- Interventioneel model: Crossover-opdracht
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Actieve vergelijker: MODSUG
Diet consisting of 50% carbohydrate (20% sugar), 15% protein, 35% fat
|
De samenstelling van macronutriënten (specifiek type en/of hoeveelheid koolhydraten) wordt gemanipuleerd
|
|
Experimenteel: LOWSUG
Diet consisting of 50% carbohydrate (<5% sugar), 15% protein, 35% fat
|
De samenstelling van macronutriënten (specifiek type en/of hoeveelheid koolhydraten) wordt gemanipuleerd
|
|
Experimenteel: LOWCHO
Diet consisting of <8% carbohydrate (<5% sugar), 15% protein, >77% fat
|
De samenstelling van macronutriënten (specifiek type en/of hoeveelheid koolhydraten) wordt gemanipuleerd
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Physical activity energy expenditure (kj/day or kcal/day)
Tijdsspanne: 3 days
|
Physical activity energy expenditure measured using individually-calibrated combined heart rate and accelerometry (kj/day or kcal/day)
|
3 days
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Time spent in different physical activity intensities (MET categories) (minutes)
Tijdsspanne: 3 days
|
Time spent in different physical activity intensities (MET categories) (minutes) using individually-calibrated combined heart rate and accelerometry
|
3 days
|
|
Energy expended in different physical activity intensities (MET categories) (kJ/day or kcal/day)
Tijdsspanne: 3 days
|
Energy expended in different physical activity intensities (MET categories) (kJ/day or kcal/day) using individually-calibrated combined heart rate and accelerometry
|
3 days
|
|
Energy expended in the postprandial period (kJ or kcal)
Tijdsspanne: 3 days
|
Energy expended in the postprandial period (kJ or kcal) measured using individually-calibrated combined heart rate and accelerometry
|
3 days
|
|
Fasting blood glucose concentrations
Tijdsspanne: 3 days
|
Measures of blood glucose concentrations pre- and post-intervention.
|
3 days
|
|
Fasting blood insulin concentrations
Tijdsspanne: 3 days
|
Measures of blood insulin concentrations pre- and post-intervention.
|
3 days
|
|
Fasting blood triglyceride concentrations
Tijdsspanne: 3 days
|
Measures of blood triglyceride concentrations pre- and post-intervention.
|
3 days
|
|
Fasting blood non-esterified fatty acid concentrations
Tijdsspanne: 3 days
|
Measures of blood non-esterified fatty acid concentrations pre- and post-intervention.
|
3 days
|
|
Fasting blood lactate concentrations
Tijdsspanne: 3 days
|
Measures of blood lactate concentrations pre- and post-intervention.
|
3 days
|
|
Fasting blood beta-hydroxybutyrate concentrations
Tijdsspanne: 3 days
|
Measures of blood beta-hydroxybutyrate concentrations pre- and post-intervention.
|
3 days
|
|
Fasting blood leptin concentrations
Tijdsspanne: 3 days
|
Measures of blood leptin concentrations pre- and post-intervention.
|
3 days
|
|
Fasting blood fibroblast growth factor-21 concentrations
Tijdsspanne: 3 days
|
Measures of blood fibroblast growth factor-21 concentrations pre- and post-intervention.
|
3 days
|
|
Fasting blood total cholesterol concentrations
Tijdsspanne: 3 days
|
Measures of blood total cholesterol concentrations pre- and post-intervention.
|
3 days
|
|
Fasting blood high density lipoprotein concentrations
Tijdsspanne: 3 days
|
Measures of blood high density lipoprotein concentrations pre- and post-intervention.
|
3 days
|
|
Fasting blood low density lipoprotein concentrations
Tijdsspanne: 3 days
|
Measures of blood low density lipoprotein concentrations pre- and post-intervention.
|
3 days
|
|
Food preference ratings
Tijdsspanne: 3 days
|
Food preference ratings determined by computer task measured pre- and post-intervention
|
3 days
|
|
Subjective appetite and mood ratings
Tijdsspanne: 3 days
|
Measured by 0-100 mm visual analogue scales measured pre- and post-intervention
|
3 days
|
|
Blood pressure
Tijdsspanne: 3 days
|
Blood pressure using an automated sphygmomanometer pre- and post-intervention
|
3 days
|
Medewerkers en onderzoekers
Sponsor
Publicaties en nuttige links
Algemene publicaties
- Betts JA, Richardson JD, Chowdhury EA, Holman GD, Tsintzas K, Thompson D. The causal role of breakfast in energy balance and health: a randomized controlled trial in lean adults. Am J Clin Nutr. 2014 Aug;100(2):539-47. doi: 10.3945/ajcn.114.083402. Epub 2014 Jun 4.
- Smith HA, Gonzalez JT, Thompson D, Betts JA. Dietary carbohydrates, components of energy balance, and associated health outcomes. Nutr Rev. 2017 Oct 1;75(10):783-797. doi: 10.1093/nutrit/nux045.
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Andere studie-ID-nummers
- EP 17/18 219
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .