Trunk and Lower Limb Muscle Contributions to ACL Loading During Single-Leg Landing
19 mai 2026 mis à jour par: Shazlin Shaharudin, Universiti Sains Malaysia
Anterior cruciate ligament (ACL) injuries commonly occurred through non-contact mechanisms during dynamic tasks such as single-leg landing (SLL).
Trunk control and lower limb muscle coordination were believed to play a critical role in modulating knee joint biomechanics and ACL loading; however, their individual muscle contributions remained poorly understood due to the difficulty of in-vivo ACL force measurement.
This cross-sectional study aimed to investigate the relationship between core strength, lower limb muscle forces, knee joint biomechanics, and ACL loading during single-leg landing in collegiate athletes.
Three-dimensional full-body kinematics, ground reaction forces, and electromyography data were collected and integrated into a musculoskeletal modelling framework to estimate ACL loading and individual muscle force contributions.
Findings from this study were expected to provide biomechanical evidence to support targeted injury-prevention and rehabilitation strategies.
Aperçu de l'étude
Statut
Complété
Les conditions
Description détaillée
Anterior cruciate ligament injuries often led to long-term consequences including early knee osteoarthritis, abnormal neuromuscular function, and reduced athletic participation. Approximately 70% of ACL injuries occurred via non-contact mechanisms, frequently during single-leg landing tasks. During such movements, ACL loading was influenced by joint kinematics, external forces, and neuromuscular coordination of both trunk and lower limb muscles. This study adopted a two-level approach. First, standard biomechanical analyses were conducted to evaluate the relationship between functional core strength and knee joint biomechanics, including knee valgus angle and knee abduction moment during SLL. Second, a musculoskeletal modelling approach was employed to quantify the contribution of individual trunk and lower limb muscles to ACL loading.
Participants performed standardized single-leg landing tasks while wearing inertial motion sensors and surface electromyography electrodes. Ground reaction forces were recorded using a force platform. A full-body musculoskeletal model was scaled to participant anthropometry and used to estimate muscle forces and ACL loading during the landing phase. Statistical analyses included linear regression and linear mixed-effects modelling to examine relationships between muscle forces, knee biomechanics, and ACL loading.
Type d'étude
Observationnel
Inscription (Réel)
40
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.
Lieux d'étude
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Pulau Pinang
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Nibong Tebal, Pulau Pinang, Malaisie
- School of Mechanical Engineering, Universiti Sains Malaysia
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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
Méthode d'échantillonnage
Échantillon non probabiliste
Population étudiée
The study population consisted of forty collegiate male athletes aged 19 to 25 years who participated in sports involving frequent jumping and landing movements.
All participants had a minimum of three years of competitive experience and trained at least twice per week.
Individuals with a history of major lower limb or back injury requiring surgery, current musculoskeletal injury, or medical conditions limiting maximal physical effort were excluded.
All participants provided written informed consent prior to participation.
La description
Inclusion Criteria:
- Male collegiate athletes aged 19-25 years
- Minimum of 3 years of competitive experience in jump-landing sports (e.g., volleyball, basketball, netball)
- Training frequency of at least twice per week
- No history of back or lower limb injury
Exclusion Criteria:
- History of major lower limb or back injury requiring surgery
- Any medical condition preventing maximal physical effort
- Current musculoskeletal pain or injury affecting movement performance
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
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Peak Anterior Cruciate Ligament (ACL) Force During Single-Leg Landing
Délai: Assessed during a single laboratory testing session (up to 2 hours).
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Peak anterior cruciate ligament (ACL) force (Newtons, N) was estimated during the landing phase of a single-leg landing task using subject-specific musculoskeletal modelling.
Three-dimensional whole-body kinematics (Xsens inertial motion capture), ground reaction forces (Bertec force platform), and surface electromyography (EMG) signals from trunk and lower limb muscles were integrated within a full-body musculoskeletal model to compute ACL loading.
Peak ACL force was extracted from initial ground contact to maximum knee flexion.
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Assessed during a single laboratory testing session (up to 2 hours).
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Correlation Between Plank Endurance Time and Peak Knee Valgus Angle During Single-Leg Landing
Délai: Assessed during a single laboratory testing session (up to 2 hours).
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Pearson correlation between plank endurance time (seconds) and peak knee valgus angle (degrees) measured during single-leg landing using three-dimensional motion analysis (Xsens inertial motion capture).
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Assessed during a single laboratory testing session (up to 2 hours).
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Knee Valgus Angle During Single-Leg Landing
Délai: Assessed during a single laboratory testing session (up to 2 hours).
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Peak knee valgus angle (degrees, °) was calculated from three-dimensional lower limb kinematic data collected using full-body inertial motion capture (Xsens).
Knee joint angles were derived using inverse kinematics and analyzed from initial ground contact to maximum knee flexion during the single-leg landing task.
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Assessed during a single laboratory testing session (up to 2 hours).
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Knee Abduction Moment During Single-Leg Landing
Délai: Assessed during a single laboratory testing session (up to 2 hours).
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Peak knee abduction moment (Newton-meters, Nm) was computed using inverse dynamics based on synchronized three-dimensional kinematic data (Xsens) and ground reaction force data (Bertec force platform).
Peak values were identified during the landing phase from initial ground contact to maximum knee flexion.
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Assessed during a single laboratory testing session (up to 2 hours).
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Trunk and Lower Limb Muscle Forces During Single-Leg Landing
Délai: Assessed during a single laboratory testing session (up to 2 hours).
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Peak trunk and lower limb muscle forces (Newtons, N) were estimated using a full-body lumbar spine musculoskeletal model driven by experimental kinematics, ground reaction forces, and electromyography-informed muscle activation patterns.
Muscle force outputs were analyzed during the landing phase of the single-leg landing task from initial ground contact to maximum knee flexion.
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Assessed during a single laboratory testing session (up to 2 hours).
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Collaborateurs et enquêteurs
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Parrainer
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)
12 juin 2024
Achèvement primaire (Réel)
11 juillet 2024
Achèvement de l'étude (Réel)
11 juillet 2024
Dates d'inscription aux études
Première soumission
1 janvier 2026
Première soumission répondant aux critères de contrôle qualité
19 mai 2026
Première publication (Réel)
27 mai 2026
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
27 mai 2026
Dernière mise à jour soumise répondant aux critères de contrôle qualité
19 mai 2026
Dernière vérification
1 janvier 2026
Plus d'information
Termes liés à cette étude
Autres numéros d'identification d'étude
- USM/JEPeM/KK/23100759
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
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