caa a22 4500 605460515 CHVBK 20210128100239.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00167-014-3165-4 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3165-4 Effects of anterior cruciate ligament reconstruction on neuromuscular tensiomyographic characteristics of the lower extremity in competitive male soccer players [Elektronische Daten] [Pedro Alvarez-Diaz, Eduard Alentorn-Geli, Silvia Ramon, Miguel Marin, Gilbert Steinbacher, Marta Rius, Roberto Seijas, Jordi Ballester, Ramon Cugat] Purpose: To investigate the effects of anterior cruciate ligament (ACL) reconstruction on mechanical and contractile properties of the skeletal muscles of the lower extremities in soccer players through tensiomyography (TMG). Methods: All soccer players with acute ACL tear included underwent resting TMG assessment of muscles of both lower extremities before and 1year after ACL reconstruction. The muscles assessed were vastus medialis (VM), vastus laterals (VL), rectus femoris (RF), semitendinosus (ST), biceps femoris (BF), gastrocnemius medialis (GM), and gastrocnemius lateralis (GL). The TMG parameters obtained for each muscle were maximal displacement (D m), delay time (T d), contraction time (T c), sustained time (T s), and half-relaxation time (T r). Results: The injured leg had a significant decrease in VL-T c, ST-T c, GM-T c, GL-T r, and GL-T d, and a significant increase in VM-T r and GM-T s in the postoperative compared to preoperative period. The non-injured leg demonstrated significant preoperative-postoperative changes in the VL, RF, and BF, but not in VM, ST, GM, and GL The magnitude of preoperative-postoperative differences in the injured leg was significantly higher in RF-T c, ST-T c, BF-D m, and GL-T r, but lower in RF-T r and GM-T s, compared to the non-injured leg. Both groups improved their symmetry between the quadriceps and hamstring muscle groups in both sides. Conclusions: The quadriceps muscles improved their resistance to fatigue and contraction velocity in both sides, and the hamstring muscles improved their contraction velocity and muscle tone in both sides as well. Improvements in contraction velocity and muscle tone were more evident in the quadriceps and hamstrings of the injured compared to the uninjured side. In addition, the intervention increased the percentage of symmetry between both sides in the TMG of the quadriceps muscles and the balance between ACL-agonist (hamstrings) and ACL-antagonist (quadriceps) muscle groups in both sides. This study shows how ACL reconstruction (and subsequent rehabilitation) can positively impact neuromuscular characteristics of the quadriceps and hamstrings. Level of evidence: Therapeutic, Level II. Springer-Verlag Berlin Heidelberg, 2014 Tensiomyography nationallicence Neuromuscular nationallicence ACL reconstruction nationallicence Soccer players nationallicence Alvarez-Diaz Pedro Mutualidad de Futbolistas, Federación Española de Fútbol, Delegación Cataluña, Barcelona, Spain aut Alentorn-Geli Eduard Department of Orthopaedic Surgery and Traumatology. Parc de Salut Mar, Hospital del Mar & Hospital de l'Esperança, Universitat Autonoma de Barcelona (UAB), Barcelona, Spain aut Ramon Silvia Fundación García-Cugat, Barcelona, Spain aut Marin Miguel Department of Physical Medicine and Rehabilitation, Hospital Quirón, Barcelona, Spain aut Steinbacher Gilbert Mutualidad de Futbolistas, Federación Española de Fútbol, Delegación Cataluña, Barcelona, Spain aut Rius Marta Mutualidad de Futbolistas, Federación Española de Fútbol, Delegación Cataluña, Barcelona, Spain aut Seijas Roberto Fundación García-Cugat, Barcelona, Spain aut Ballester Jordi Department of Surgery, Universitat Autonoma de Barcelona (UAB), Barcelona, Spain aut Cugat Ramon Mutualidad de Futbolistas, Federación Española de Fútbol, Delegación Cataluña, Barcelona, Spain aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3407-3413 0942-2056 23:11<3407 2015 23 167 https://doi.org/10.1007/s00167-014-3165-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-3165-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alvarez-Diaz Pedro Mutualidad de Futbolistas, Federación Española de Fútbol, Delegación Cataluña, Barcelona, Spain aut NATIONALLICENCE 700 1- Alentorn-Geli Eduard Department of Orthopaedic Surgery and Traumatology. Parc de Salut Mar, Hospital del Mar & Hospital de l'Esperança, Universitat Autonoma de Barcelona (UAB), Barcelona, Spain aut NATIONALLICENCE 700 1- Ramon Silvia Fundación García-Cugat, Barcelona, Spain aut NATIONALLICENCE 700 1- Marin Miguel Department of Physical Medicine and Rehabilitation, Hospital Quirón, Barcelona, Spain aut NATIONALLICENCE 700 1- Steinbacher Gilbert Mutualidad de Futbolistas, Federación Española de Fútbol, Delegación Cataluña, Barcelona, Spain aut NATIONALLICENCE 700 1- Rius Marta Mutualidad de Futbolistas, Federación Española de Fútbol, Delegación Cataluña, Barcelona, Spain aut NATIONALLICENCE 700 1- Seijas Roberto Fundación García-Cugat, Barcelona, Spain aut NATIONALLICENCE 700 1- Ballester Jordi Department of Surgery, Universitat Autonoma de Barcelona (UAB), Barcelona, Spain aut NATIONALLICENCE 700 1- Cugat Ramon Mutualidad de Futbolistas, Federación Española de Fútbol, Delegación Cataluña, Barcelona, Spain aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3407-3413 0942-2056 23:11<3407 2015 23 167