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- Essai clinique NCT07705698
Nordic vs Blood Flow Restriction Nordic Exercise in Elite Female Pole Vaulters
Effects of Nordic Hamstring Exercise and Blood Flow Restriction-Assisted Nordic Hamstring Exercise on Hamstring Strength, Muscle Morphology and Functional Performance in Elite Adolescent Female Pole Vaulters: A Randomized Controlled Trial
Aperçu de l'étude
Statut
Les conditions
Description détaillée
Hamstring muscles play a crucial role in sprinting, acceleration, deceleration, and explosive athletic performance. Nordic Hamstring Exercise is widely recommended for increasing eccentric hamstring strength and reducing injury risk. However, evidence regarding the additional effects of blood flow restriction during Nordic Hamstring Exercise is limited, particularly in elite adolescent female athletes.
This randomized controlled trial aims to investigate whether adding blood flow restriction to Nordic Hamstring Exercise enhances adaptations in hamstring muscle strength, muscle morphology, and functional performance compared with conventional Nordic Hamstring Exercise and routine training alone.
Thirty-six elite adolescent female pole vaulters aged 12-18 years will be recruited from the Turkish Olympic Preparation Center. Participants will be allocated using block randomization into three groups:
Nordic Hamstring Exercise Group Blood Flow Restriction Nordic Hamstring Exercise Group Control Group Intervention groups will perform supervised exercise sessions three times weekly for eight weeks. The control group will continue regular training activities without additional hamstring-specific intervention.
Assessments will include hamstring muscle strength measured with a MicroFET2 handheld dynamometer, muscle morphology assessed using ultrasonography, and functional performance evaluated using a 30-meter sprint test.
Type d'étude
Inscription (Estimé)
Phase
- N'est pas applicable
Contacts et emplacements
Coordonnées de l'étude
- Nom: İdil Esin Ünlü, Assist. Prof. Dr.
- Numéro de téléphone: +90 506 515 66 22
- E-mail: idil.unlu@toros.edu.tr
Lieux d'étude
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Adana, Turquie (Türkiye)
- Recrutement
- Adana Olympic Preparation Center
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Contact:
- Burçin Uğur, PHD
- Numéro de téléphone: +90 507 772 17 72
- E-mail: burcnugur@yahoo.com
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Enfant
- Adulte
Accepte les volontaires sains
La description
Inclusion Criteria:
- Female athletes aged between 12 and 18 years.
- Elite pole vault athletes actively participating in organized training and competition.
- Minimum of 1 year of regular pole vault training experience.
- Participation in regular training at least 3 times per week.
- Ability to participate in an 8-week exercise program.
- Written informed assent from the athlete and written informed consent from a parent or legal guardian.
Exclusion Criteria:
- Any lower extremity musculoskeletal injury within the previous 6 months.
- Previous hamstring muscle surgery.
- Current pain or injury limiting sports participation.
- Neurological disorders affecting movement or balance.
- Cardiovascular conditions contraindicating exercise training or blood flow restriction.
- Any contraindication to blood flow restriction training.
- Participation in another structured hamstring strengthening program during the study period.
- Inability or unwillingness to comply with study procedures.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Autre
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Aucun (étiquette ouverte)
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
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Expérimental: Nordic Hamstring Exercise
Participants will perform a supervised Nordic Hamstring Exercise program three times per week for 8 weeks in addition to their routine pole vault training.
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Participants will perform a supervised Nordic Hamstring Exercise program three times per week for 8 weeks in addition to their routine pole vault training.
The exercise program will be progressively increased according to participant tolerance and training progression.
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Expérimental: Blood Flow Restriction-Assisted Nordic Hamstring Exercise
Participants will perform Nordic Hamstring Exercise combined with blood flow restriction training three times per week for 8 weeks in addition to their routine pole vault training.
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articipants will perform a supervised Nordic Hamstring Exercise program combined with individualized blood flow restriction training three times per week for 8 weeks in addition to their routine pole vault training.
Blood flow restriction will be applied using pneumatic cuffs at a predetermined percentage of arterial occlusion pressure.
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Aucune intervention: Control
Participants will continue their routine sports training without additional hamstring-specific exercise intervention.
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Hamstring Muscle Strength
Délai: Baseline and 8 weeks
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Isometric hamstring muscle strength will be assessed bilaterally using a MicroFET2 handheld dynamometer.
Three measurements will be recorded and the average value will be used for analysis.
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Baseline and 8 weeks
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Hamstring Muscle Thickness
Délai: Baseline and 8 weeks
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Hamstring muscle thickness will be evaluated bilaterally using ultrasonography.
Three measurements will be obtained and averaged.
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Baseline and 8 weeks
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Hamstring Cross-Sectional Area
Délai: Baseline and 8 weeks
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Cross-sectional area of the hamstring muscle will be assessed bilaterally using ultrasonography.
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Baseline and 8 weeks
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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30-Meter Sprint Performance
Délai: Baseline and 8 weeks
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Sprint performance will be assessed using a 30-meter sprint test.
The average of three trials will be used for analysis.
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Baseline and 8 weeks
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Collaborateurs et enquêteurs
Parrainer
Publications et liens utiles
Publications générales
- Ripley NJ, Cuthbert M, Comfort P, McMahon JJ. Effect of additional Nordic hamstring exercise or sprint training on the modifiable risk factors of hamstring strain injuries and performance. PLoS One. 2023 Mar 2;18(3):e0281966. doi: 10.1371/journal.pone.0281966. eCollection 2023.
- Vianna KB, Rodrigues LG, Oliveira NT, Ribeiro-Alvares JB, Baroni BM. A Preseason Training Program With the Nordic Hamstring Exercise Increases Eccentric Knee Flexor Strength and Fascicle Length in Professional Female Soccer Players. Int J Sports Phys Ther. 2021 Apr 1;16(2):459-467. doi: 10.26603/001c.19452.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
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
Mots clés
Autres numéros d'identification d'étude
- 25.05.2026-05/82
Plan pour les données individuelles des participants (IPD)
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Informations sur les médicaments et les dispositifs, documents d'étude
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