caa a22 4500 605460728 CHVBK 20210128100240.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00167-014-3110-6 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3110-6 The effect of knee extensor open kinetic chain resistance training in the ACL-injured knee [Elektronische Daten] [Massimo Barcellona, Matthew Morrissey, Peter Milligan, Melissa Clinton, Andrew Amis] Purpose: To investigate the effect of different loads of knee extensor open kinetic chain resistance training on anterior knee laxity and function in the ACL-injured (ACLI) knee. Methods: Fifty-eight ACLI subjects were randomised to one of three (12-week duration) training groups. The STAND group trained according to a standardised rehabilitation protocol. Subjects in the LOW and HIGH group trained as did the STAND group but with the addition of seated knee extensor open kinetic chain resistance training at loads of 2 sets of 20 repetition maximum (RM) and 20 sets of 2RM, respectively. Anterior knee laxity and measurements of physical and subjective function were performed at baseline, 6 and 12weeks. Thirty-six subjects were tested at both baseline and 12weeks (STAND n=13, LOW n=11, HIGH n=12). Results: The LOW group demonstrated a reduction in 133N anterior knee laxity between baseline and 12weeks testing when compared to the HIGH and the STAND groups (p=0.009). Specifically, the trained-untrained knee laxity decreased an average of approximately 5mm in the LOW group while remaining the same in the other two groups. Conclusion: Twelve weeks of knee extensor open kinetic chain resistance training at loads of 2 sets of 20RM led to a reduction in anterior knee laxity in the ACLI knee. This reduction in laxity does not appear to offer any significant short-term functional advantages when compared to a standard rehabilitation protocol. These results indicate that knee laxity can be decreased with resistance training of the thigh muscles. Level of evidence: Randomised controlled trial, Level II. Springer-Verlag Berlin Heidelberg, 2014 Therapeutic exercise nationallicence Quadriceps nationallicence Joint stability nationallicence Hypermobility nationallicence Resistance training nationallicence Barcellona Massimo Academic Department of Physiotherapy, School of Medicine, King's College London, London, UK aut Morrissey Matthew Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia aut Milligan Peter King's College London, London, UK aut Clinton Melissa Guy's and St. Thomas' Hospital, London, UK aut Amis Andrew Department of Mechanical Engineering, Imperial College London, London, UK aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3168-3177 0942-2056 23:11<3168 2015 23 167 https://doi.org/10.1007/s00167-014-3110-6 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/s00167-014-3110-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Barcellona Massimo Academic Department of Physiotherapy, School of Medicine, King's College London, London, UK aut NATIONALLICENCE 700 1- Morrissey Matthew Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia aut NATIONALLICENCE 700 1- Milligan Peter King's College London, London, UK aut NATIONALLICENCE 700 1- Clinton Melissa Guy's and St. Thomas' Hospital, London, UK aut NATIONALLICENCE 700 1- Amis Andrew Department of Mechanical Engineering, Imperial College London, London, UK aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3168-3177 0942-2056 23:11<3168 2015 23 167