Explosive quadriceps strength and landing mechanics in females with and without anterior cruciate ligament reconstruction

Yu Lun Huang*, Eunwook Chang, Samuel T. Johnson, Christine D. Pollard, Mark A. Hoffman, Marc F. Norcross

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Lower explosive quadriceps strength, quantified as rate of torque development (RTD), may contribute to landing mechanics associated with anterior cruciate ligament (ACL) injury risk. However, the association between quadriceps RTD and landing mechanics during high demand tasks remains unclear. Therefore, this study investigated the influence of quadriceps RTD on sagittal plane landing mechanics during double-leg jump landings (DLJL) and single-leg jump cuts (SLJC) in females with and without ACL reconstruction (ACLR). Quadriceps RTD was measured during isometric muscle contractions. Landing mechanics were collected during DLJL and SLJC tasks. Separate stepwise multiple linear regression models determined the amount of variance in sagittal plane landing mechanics that could be explained by quadriceps RTD, group (ACLR or Control), and their interaction. The results indicate that greater quadriceps RTD is associated with lower loading rate (p = 0.02) and longer time to peak vertical ground reaction force (p = 0.001) during SLJC, regardless of ACLR status. As greater loading rate may lead to higher risk of ACL injuries and post-traumatic knee osteoarthritis post-ACLR, explosive muscle strength interventions might be useful for individuals with and without ACLR to facilitate the use of safer landing mechanics.

Original languageEnglish
Article number7431
Pages (from-to)1-13
Number of pages13
JournalInternational journal of environmental research and public health
Volume17
Issue number20
DOIs
Publication statusPublished - 2020 Oct 2
Externally publishedYes

Keywords

  • Loading rate
  • Osteoarthritis
  • Quadriceps function

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

Fingerprint

Dive into the research topics of 'Explosive quadriceps strength and landing mechanics in females with and without anterior cruciate ligament reconstruction'. Together they form a unique fingerprint.

Cite this