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Differential influence of quadriceps rate of torque development on single- and double-leg landing mechanics in anterior cruciate ligament reconstructed and control females.
Huang, Yu-Lun; Mulligan, Colin M S; Johnson, Samuel T; Pollard, Christine D; Hannigan, Kim; Stutzenberger, Lyndsay; Norcross, Marc F.
Afiliación
  • Huang YL; Department of Physical Education and Sport Sciences, College of Sports and Recreation, National Taiwan Normal University, Taipei City, Taiwan.
  • Mulligan CMS; Kinesiology & Athletic Training Programs, College of Health, Oregon State University, Corvallis, Oregon, USA.
  • Johnson ST; Kinesiology & Athletic Training Programs, College of Health, Oregon State University, Corvallis, Oregon, USA.
  • Pollard CD; Kinesiology Program, College of Health, Oregon State University-Cascades, Bend, Oregon, USA.
  • Hannigan K; Kinesiology & Athletic Training Programs, College of Health, Oregon State University, Corvallis, Oregon, USA.
  • Stutzenberger L; College of Physical Therapy, George Fox University, Newberg, Oregon, USA.
  • Norcross MF; Kinesiology & Athletic Training Programs, College of Health, Oregon State University, Corvallis, Oregon, USA.
Knee Surg Sports Traumatol Arthrosc ; 32(8): 2013-2022, 2024 Aug.
Article en En | MEDLINE | ID: mdl-38686590
ABSTRACT

PURPOSE:

The capacity to explosively contract quadriceps within the critical timeframe associated with anterior cruciate ligament (ACL) injury, quantified by the rate of torque development, is potentially essential for safe landing mechanics. This study aimed to investigate the influence of explosive quadriceps strength on ACL-related sagittal-plane landing mechanics in females with and without ACL reconstruction (ACLR).

METHODS:

Quadriceps explosive strength and landing mechanics were assessed in 19 ACLR and 19 control females during isometric contractions and double- and single-leg jump landings. A stepwise multiple linear regression model determined the variance in each of the landing biomechanics variables for the ACLR limb and nondominant limb of controls that could be explained by the group, rate of torque development and/or their interaction. If peak kinetic variables could be predicted by the rate of torque development or interaction, additional analyses were conducted, accounting for knee flexion as a covariate in the regression model.

RESULTS:

During single-leg landings, ACLR females exhibited greater knee flexion at initial contact than controls (p = 0.04). Greater quadriceps rate of torque development predicted higher peak posterior ground reaction force and anterior tibial shear force in both groups (p = 0.04). However, after controlling for knee flexion angle at those peak forces, quadriceps rate of torque development was not predictive. In double-leg landings, greater explosive quadriceps strength was associated with quicker attainment of peak knee extension moment and posterior ground reaction force in the ACLR limb (p = 0.03).

CONCLUSION:

Regardless of ACL injury status, females with greater explosive quadriceps strength adopted safer single-leg landings through increased knee flexion, potentially mitigating ACL loading despite encountering higher peak forces. During double-leg landings, a greater explosive quadriceps strength of the ACLR limb is associated with faster achievement of peak force upon landing. Incorporating explosive quadriceps strengthening into post-ACLR rehabilitation and injury prevention programmes may enhance landing mechanics for reducing primary and subsequent ACL injury risks. LEVEL OF EVIDENCE Level II.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Torque / Músculo Cuádriceps / Fuerza Muscular / Reconstrucción del Ligamento Cruzado Anterior / Lesiones del Ligamento Cruzado Anterior Límite: Adult / Female / Humans Idioma: En Revista: Knee Surg Sports Traumatol Arthrosc Asunto de la revista: MEDICINA ESPORTIVA / TRAUMATOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Taiwán

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Torque / Músculo Cuádriceps / Fuerza Muscular / Reconstrucción del Ligamento Cruzado Anterior / Lesiones del Ligamento Cruzado Anterior Límite: Adult / Female / Humans Idioma: En Revista: Knee Surg Sports Traumatol Arthrosc Asunto de la revista: MEDICINA ESPORTIVA / TRAUMATOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Taiwán