Effects of Unilateral Compound Training on Lower-Limb Strength Asymmetry and Athletic Performance in Female Handball Players (UCT-HB)
Effects of a Six-Week Unilateral Compound Training Program on Lower-Limb Strength Asymmetry and Athletic Performance in Competitive Female Handball Players: A Randomized Controlled Trial
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
emale handball requires repeated sprinting, jumping, rapid changes of direction, and unilateral movements that may contribute to the development of lower-limb strength asymmetries. Such asymmetries have been associated with impaired athletic performance and an increased risk of injury. Although unilateral resistance and plyometric exercises have shown beneficial effects individually, evidence regarding the effectiveness of unilateral compound training in female handball players remains limited.
This randomized controlled trial aimed to evaluate the effects of a six-week unilateral compound training program on lower-limb strength asymmetry, isokinetic knee extensor and flexor strength, hamstring-to-quadriceps ratios, body composition, sprint performance, change-of-direction ability, countermovement jump performance, and single-leg jump performance in competitive female handball players.
Thirty competitive female handball players were randomly assigned to an experimental group or a control group. The experimental group completed unilateral resistance and plyometric exercises three times per week for six weeks in addition to regular handball training, whereas the control group continued regular handball training only. Outcome measures were assessed before and after the intervention using standardized laboratory procedures. The findings of this study are expected to provide evidence regarding the effectiveness of unilateral compound training for reducing lower-limb asymmetry and improving sport-specific performance in female handball athletes.
Type d'étude
Inscription (Réel)
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
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Gaziantep, Turquie (Türkiye), 27310
- Gaziantep University, Faculty of Sport Sciences
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
Accepte les volontaires sains
La description
Inclusion Criteria:
- Female handball players aged 18-25 years.
- Competing in the Turkish Women's 2nd Handball League.
- Regular participation in team training (4 sessions/week) and official matches.
- Voluntary participation with written informed consent.
Exclusion Criteria:
- Current musculoskeletal injury or pain preventing participation in training.
- History of lower-limb surgery within the previous 12 months.
- Neurological, cardiovascular, or other medical conditions affecting exercise participation.
- Failure to complete the intervention or assessment 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: Experimental
Participants received a six-week unilateral compound training program three times per week in addition to their regular handball training.
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Participants in the experimental group completed a supervised unilateral compound training program three times per week for six weeks in addition to their regular handball training.
The intervention consisted of progressive unilateral resistance and plyometric exercises designed to improve lower-limb strength asymmetry, isokinetic muscle strength, neuromuscular performance, sprint performance, change-of-direction ability, and jump performance.
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Aucune intervention: Control
Participants continued their regular handball training without additional unilateral compound training.
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Lower-Limb Strength Asymmetry
Délai: Baseline and immediately after the 6-week intervention
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Lower-limb strength asymmetry was assessed using isokinetic dynamometry before and after the intervention.
Changes in asymmetry between the dominant and non-dominant lower limbs were compared between the experimental and control groups.
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Baseline and immediately after the 6-week intervention
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Isokinetic Knee Extensor Strength
Délai: Baseline and immediately after the 6-week intervention
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Peak torque of the knee extensor muscles measured using an isokinetic dynamometer before and after the intervention.
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Baseline and immediately after the 6-week intervention
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Isokinetic Knee Flexor Strength
Délai: Baseline and immediately after the 6-week intervention
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Peak torque of the knee flexor muscles measured using an isokinetic dynamometer.
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Baseline and immediately after the 6-week intervention
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Hamstring-to-Quadriceps Ratio
Délai: Baseline and immediately after the 6-week intervention
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Hamstring-to-quadriceps strength ratio calculated from isokinetic knee muscle strength measurements.
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Baseline and immediately after the 6-week intervention
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20-m Sprint Performance
Délai: Baseline and immediately after the 6-week intervention
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Sprint time measured over 20 meters.
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Baseline and immediately after the 6-week intervention
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Change-of-Direction Performance
Délai: Baseline and immediately after the 6-week intervention
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Change-of-direction performance assessed using the agility test employed in the study protocol.
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Baseline and immediately after the 6-week intervention
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Countermovement Jump Height
Délai: Baseline and immediately after the 6-week intervention
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Vertical jump height assessed using the countermovement jump test.
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Baseline and immediately after the 6-week intervention
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Collaborateurs et enquêteurs
Parrainer
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
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
- 2025-080 (Turkish Medicines and Medical Devices Agency (TITCK))
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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