Microvascular and Metabolic Effects of High-intensity Interval Exercise Training (HIIT-FAST)
Microvascular and Metabolic Effects of High-intensity Interval Training (HIIT) and Intermittent Fasting (FAST) in Overweight or Obese, Sedentary Women With Cardiometabolic Risk Factors: HIIT-FAST, a Randomized Clinical Trial
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
Physical inactivity and increased caloric intake play important roles in the pathophysiology of obesity. Increases of physical activity and modifications of eating behaviors are first-line interventions which, however, are not easily implemented, and lack of time to exercise and difficulties in coping with different diets are common reasons for failure. High-intensity interval training (HIIT) is a "faster" alternative to moderate-intensity continuous training (CT). Conversely, intermittent fasting is also an alternative to more complex diets, as it restricts caloric intake to a specified period of time without major diet composition changes. The combination of HIIT and fasting may therefore provide incremental benefits.
Sedentary women aged ≥ 30 years and ≤50 years, with body mass index ≥25 kg/m2 and cardiometabolic risk factors, will be randomized to HIIT performed in the fasting state, HIIT performed in the fed state, CT in the fasting state or CT in the fed state. Cardiometabolic parameters, anthropometric indices, cardiorespiratory fitness, quality of life and microvascular function (cutaneous capillary density and microvascular reactivity evaluated by laser speckle contrast imaging) will be evaluated before the initiation of the interventions and 4 weeks thereafter.
Type d'étude
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
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Rio de Janeiro, Brésil, 22240-006
- National Institute of Cardiology, Ministry of Health, Brazil
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- Female gender
- Age≥ 30 years and ≤50 years
- Premenopausal status
- Body mass index >25 kg/m2
- At least one of the following:
waist circumference ≥80 cm (women); triglycerides ≥150 mg/dl or treatment for this lipid abnormality; High density-lipoprotein cholesterol <50 mg/dl (women), or treatment for this abnormality; fasting plasma glucose ≥100 mg/dl
Exclusion Criteria:
- Any cardiovascular disease, including systemic hypertension
- Diabetes mellitus
- Chronic pulmonary disease
- Any systemic disease or condition that might reduce the adherence or tolerance to exercise or fasting
- Orthopedic or neurologic conditions that might impair exercise training
- Pregnancy or breastfeeding
- Abnormalities elicited at exercise treadmill testing that preclude the initiation of exercise training
- Current engagement in any exercise training protocol
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Soins de soutien
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Aucun (étiquette ouverte)
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Expérimental: HIIT only
Volunteers will be submitted to high-intensity interval training (HIIT) performed in fed state
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High-intensity interval exercise training in the fed state
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Expérimental: CT+FAST
Volunteers will be submitted to continous training (CT) performed in the fasting state
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Continous exercise training in the fasting state
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Expérimental: CT only
Volunteers will be submitted to continous training (CT) performed in fed state.
|
Continous exercise training in the fed state
|
|
Expérimental: HIIT+FAST
Volunteers will be submitted to high-intensity interval training (HIIT) performed in the fasting state.
|
High-intensity interval exercise training in the fasting state
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Capillary density
Délai: 6 months
|
Number of spontaneously perfused skin capillaries per mm2
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6 months
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Microvascular reactivity assessed by laser speckle contrast imaging
Délai: 6 months
|
Skin microvascular flow in arbitrary perfusion units
|
6 months
|
Collaborateurs et enquêteurs
Les enquêteurs
- Chercheur principal: EDUARDO V TIBIRICA, MD, PhD, National Innstitute of Cardiology
Publications et liens utiles
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Anticipé)
Achèvement de l'étude (Anticipé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- CAAE:69240017.1.0000.5272
Informations sur les médicaments et les dispositifs, documents d'étude
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