Cette page a été traduite automatiquement et l'exactitude de la traduction n'est pas garantie. Veuillez vous référer au version anglaise pour un texte source.

Effect of Isometric Handgrip Exercise on Blood Pressure in Pregnant Women (GRIP4HEALTH)

21 mai 2026 mis à jour par: Carina Enea, University of Poitiers

Effect of Isometric Handgrip Exercise on Cardiovascular and Cognitive Responses in Normotensive and Hypertensive Pregnant Women (GRIP4HEALTH)

Hypertension during pregnancy is a major public health concern, increasing the risk of cardiovascular complications for both the mother and the fetus. Women with chronic hypertension are at higher risk of adverse outcomes, and elevated blood pressure during pregnancy has also been associated with long-term cardiovascular and cognitive impairments.Regular physical activity is recognized as an effective non-pharmacological strategy to reduce blood pressure. Among different exercise modalities, isometric exercise has shown promising effects in lowering blood pressure in the general population, with minimal cardiovascular strain. However, its effects and safety in pregnant women, particularly those with hypertension, remain poorly understood.In addition to cardiovascular alterations, hypertension during pregnancy may also impact cognitive function, potentially through changes in cerebral perfusion and vascular function. Despite these associations, the combined cardiovascular and cognitive responses to exercise in this population have not been fully explored.This study aims to investigate the effects of isometric handgrip exercise on cardiovascular and cognitive responses in pregnant women with and without chronic hypertension, in order to better understand its potential as a safe and effective non-pharmacological intervention during pregnancy.

Aperçu de l'étude

Statut

Recrutement

Les conditions

Intervention / Traitement

Description détaillée

Hypertension during pregnancy is a major public health concern associated with increased maternal and fetal morbidity, and long-term cardiovascular risk. Women with chronic hypertension are at higher risk of complications such as preeclampsia, preterm birth, and adverse neonatal outcomes. In addition, growing evidence suggests that hypertensive disorders of pregnancy may also be associated with long-term alterations in cardiovascular function and cognitive performance.During pregnancy, physiological changes in blood pressure regulation and vascular function may further complicate the management of hypertension. Pharmacological treatment options are limited due to potential risks for the fetus, highlighting the need for safe and effective non-pharmacological strategies.Physical exercise is recognized as an effective approach to reduce blood pressure and improve cardiovascular health in the general population. Among the different exercise modalities, isometric exercise has shown particularly promising effects in reducing blood pressure, with a low cardiovascular load. This modality may therefore represent an attractive option for pregnant women, as it can be performed safely with minimal physiological stress. However, despite these potential benefits, the effects and safety of isometric exercise during pregnancy, particularly in hypertensive women, remain poorly understood.In addition to cardiovascular alterations, hypertension during pregnancy may impact cognitive function, potentially through changes in cerebral perfusion and vascular regulation. Although physical activity has been associated with improvements in cognitive performance in the general population, the acute effects of exercise on cognitive function during pregnancy have not been well established.The aims of this study are:First, to evaluate the effect of isometric handgrip exercise on 24-hour blood pressure in pregnant women with and without chronic hypertension.Second, to compare cardiovascular responses to isometric exercise between normotensive and hypertensive pregnant women, including brachial and central blood pressure, arterial stiffness, and heart rate.Third, to examine differences in cognitive performance between normotensive and hypertensive pregnant women, and to explore the relationship between cardiovascular responses and cognitive outcomes.

Type d'étude

Interventionnel

Inscription (Estimé)

30

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Sauvegarde des contacts de l'étude

Lieux d'étude

  • France
      • Poitiers, France, 86000
        • Recrutement
        • Faculty of Sport Science - MOVE Laboratory - UR 20296
        • Contact:

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte

Accepte les volontaires sains

Oui

La description

Inclusion Criteria:

  • Pregnant women covered by the French National Health Insurance system
  • Pregnant women who do not object to participation in the study
  • Women belonging to one of the following two groups:
  • Women with chronic hypertension present before pregnancy (diagnosed within the past 5 years), defined as systolic blood pressure (SBP) ≥ 140 mmHg or diastolic blood pressure (DBP) ≥ 90 mmHg, without antihypertensive treatment
  • Normotensive pregnant women, defined as systolic blood pressure (SBP) < 140 mmHg and diastolic blood pressure (DBP) < 90 mmHg before pregnancy

Exclusion Criteria:

  • Current treatment for chronic or gestational hypertension
  • Known cardiovascular disease other than chronic hypertension
  • Age under 18 years
  • Persons deprived of liberty
  • Inability to speak or adequately understand French
  • Persons hospitalized without consent who are not subject to legal protection measures, and persons admitted to a health or social institution for purposes other than research
  • Persons currently excluded from participation in another research study
  • Persons under judicial protection or guardianship Type 1 or type 2 diabetes
  • Severe or extreme obesity (BMI ≥ 40 kg/m²)
  • Thyroid disease
  • Heavy smoking

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: La prévention
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation croisée
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Autre: Normotensive Pregnant Women
Pregnant women without chronic hypertension. Participants in this arm complete both the isometric handgrip exercise session and the control rest session in randomized order.
Comportemental: Isometric Handgrip Exercise
Isometric handgrip exercise performed at 30% of maximal voluntary contraction, consisting of four 2-minute contractions with one-minute rest intervals between efforts. The exercise is performed using a handgrip dynamometer.
Comportemental: Control Rest
Seated rest condition without exercise, used as a control comparison to the isometric handgrip intervention.
Autre: Hypertensive Pregnant Women
Pregnant women with chronic untreated hypertension. Participants in this arm complete both the isometric handgrip exercise session and the control rest session in randomized order.
Comportemental: Isometric Handgrip Exercise
Isometric handgrip exercise performed at 30% of maximal voluntary contraction, consisting of four 2-minute contractions with one-minute rest intervals between efforts. The exercise is performed using a handgrip dynamometer.
Comportemental: Control Rest
Seated rest condition without exercise, used as a control comparison to the isometric handgrip intervention.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Pression artérielle systolique et diastolique (mesure ambulatoire de la pression artérielle)
Délai: Après les séances (24 heures)
Hypotension post-exercice, à l'aide du Mobil-O-Graph (mmHg).
Après les séances (24 heures)

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Systolic and diastolic blood pressure (resting)
Délai: Before and after sessions (15 minutes)
Automated oscillometric tensiometer (mmHg)
Before and after sessions (15 minutes)
Central blood pressure
Délai: Baseline and post-intervention during sessions (30 minutes)
Central systolic and diastolic blood pressure assessed using pulse wave analysis derived from brachial oscillometric measurements.
Baseline and post-intervention during sessions (30 minutes)
Pulse wave velocity
Délai: Baseline
Arterial stiffness assessed by carotid-femoral pulse wave velocity using applanation tonometry. This measurement is performed at rest to characterize vascular health.
Baseline
Heart rate
Délai: Basline, before and after sessions (15 minutes)
Heart rate measured during each experimental session and recovery period using a heart rate monitor to assess cardiovascular response to the intervention.
Basline, before and after sessions (15 minutes)
Cognitive Performance
Délai: Baseline

Cognitive performance assessed at rest using a neuropsychological test battery including executive function, memory, attention, and processing speed tests. This outcome is used to compare cognitive function between normotensive and hypertensive pregnant women.

  • Stroop : higher scores indicate better executive function and inhibitory control. No universal minimum or maximum score.
  • Verbal Fluency Test: higher scores indicate better verbal executive functioning. No universal maximum score.
  • Rey Auditory Verbal Learning Test (RAVLT): Higher scores indicate better verbal learning and memory. Minimum score = 0; maximum score = 75.
  • Digit Span Test (forward and backward): higher scores indicate better working memory and attention. Minimum score = 0; No universal maximum score.
Baseline

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

University of Poitiers

Collaborateurs

Poitiers University Hospital
Laboratory MOVE, Faculty of Sport Sciences, University of Poitiers, France

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

6 mars 2026

Achèvement primaire (Estimé)

31 août 2027

Achèvement de l'étude (Estimé)

30 septembre 2027

Dates d'inscription aux études

Première soumission

6 mai 2026

Première soumission répondant aux critères de contrôle qualité

21 mai 2026

Première publication (Réel)

26 mai 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

26 mai 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

21 mai 2026

Dernière vérification

1 mai 2026

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • 2025-A00590-49

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

NON

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

S'abonner