| Title: |
Neuroplastic alterations in common synaptic inputs and synergistic motor unit clusters controlling the vastii muscles of individuals with ACL reconstruction |
| Authors: |
Nuccio S.; Germer C. M.; Casolo A.; Borzuola R.; Labanca L.; Rocchi J. E.; Mariani P. P.; Felici F.; Farina D.; Falla D.; Macaluso A.; Sbriccoli P.; Del Vecchio A. |
| Contributors: |
Nuccio, S.; Germer, C. M.; Casolo, A.; Borzuola, R.; Labanca, L.; Rocchi, J. E.; Mariani, P. P.; Felici, F.; Farina, D.; Falla, D.; Macaluso, A.; Sbriccoli, P.; Del Vecchio, A. |
| Publication Year: |
2024 |
| Collection: |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
| Subject Terms: |
ACL reconstruction; common synaptic input; force steadine; motor unit; muscle synergies |
| Description: |
This cross-sectional study aims to elucidate the neural mechanisms underlying the control of knee extension forces in individuals with anterior cruciate ligament reconstruction (ACLR). Eleven soccer players with ACLR and nine control players performed unilateral isometric knee extensions at 10% and 30% of their maximum voluntary force (MVF). Simultaneous recordings of high-density surface electromyography (HDEMG) and force output were conducted for each lower limb, and HDEMG data from the vastus lateralis (VL) and vastus medialis (VM) muscles were decomposed into individual motor unit spike trains. Force steadiness was estimated using the coefficient of variation of force. An intramuscular coherence analysis was adopted to estimate the common synaptic input (CSI) converging to each muscle. A factor analysis was applied to investigate the neural strategies underlying the control of synergistic motor neuron clusters, referred to as motor unit modes. Force steadiness was similar between lower limbs. However, motor neurons innervating the VL on the reconstructed side received a lower proportion of CSI at low-frequency bandwidths ( |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/pmid/39024407; info:eu-repo/semantics/altIdentifier/wos/WOS:001334164200001; volume:137; issue:4; firstpage:835; lastpage:847; numberofpages:13; journal:JOURNAL OF APPLIED PHYSIOLOGY; https://hdl.handle.net/11577/3542332 |
| DOI: |
10.1152/japplphysiol.00056.2024 |
| Availability: |
https://hdl.handle.net/11577/3542332; https://doi.org/10.1152/japplphysiol.00056.2024 |
| Rights: |
info:eu-repo/semantics/openAccess ; license:Accesso libero ; license uri:iris.PUB01 |
| Accession Number: |
edsbas.CB32CAF1 |
| Database: |
BASE |