Relationship between electromyographic activity of knee joint muscles with vertical and posterior ground reaction forces in anterior cruciate ligament reconstructed patients during a single leg vertical drop landing task

Dashti Rostami, K. and Alizadeh, M. and Minoonejad, H. and Thomas, A. and Yazdi, H. (2020) Relationship between electromyographic activity of knee joint muscles with vertical and posterior ground reaction forces in anterior cruciate ligament reconstructed patients during a single leg vertical drop landing task. Research in Sports Medicine, 28 (1). pp. 1-14.

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Abstract

The objective of the present study is to examine the relation between activity patterns of knee joint muscles with vertical and posterior ground reaction forces (VGRF and PGRF, respectively) in patients after anterior cruciate ligament reconstruction (ACLR). Twenty males post-ACLR participated in this cross-sectional study. The association between muscle activity with VGRF and PGRF was assessed during a single leg vertical drop-landing task. There were strong negative associations between preparatory VL, VM and MG activity and PGRF (P< 0.05). Strong positive associations were found between reactive VM and LH activity with PGRF (P< 0.05). Preparatory co-activation of VM: MH had significant negative associations with VGRF (P< 0.05) and reactive co-activation of VL:LH had a significant positive relation with PGRF(P< 0.05). Greater preparatory activity and co-activation of knee muscles were associated with lower peak PGRF and VGRF, whereas greater reactive activity and co-activation of knee muscles was associated with greater peak PGRF and VGRF. According to our findings, both activity and co-activation of knee muscles during the preparatory phase were associated with reduced PGRF and VGRF, respectively in ACLR patients; thus, incorporating exercises in order to increase preparatory activity and co-activation of knee joint muscles into rehabilitation programs in ACLR patients seems necessary. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.

Item Type: Article
Additional Information: cited By 1
Uncontrolled Keywords: adolescent; adult; anterior cruciate ligament injury; anterior cruciate ligament reconstruction; biomechanics; cross-sectional study; electromyography; human; knee; male; pathophysiology; physiology; skeletal muscle; task performance; young adult, Adolescent; Adult; Anterior Cruciate Ligament Injuries; Anterior Cruciate Ligament Reconstruction; Biomechanical Phenomena; Cross-Sectional Studies; Electromyography; Humans; Knee Joint; Male; Muscle, Skeletal; Task Performance and Analysis; Young Adult
Subjects: WE Musculoskeletal System
Depositing User: eprints admin
Date Deposited: 02 Sep 2020 03:52
Last Modified: 02 Sep 2020 03:52
URI: http://eprints.iums.ac.ir/id/eprint/24193

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