caa a22 4500 605460655 CHVBK 20210128100239.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00167-014-3121-3 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3121-3 Symmetry of squatting and the effect of fatigue following anterior cruciate ligament reconstruction [Elektronische Daten] [Kate Webster, Darren Austin, Julian Feller, Ross Clark, Jodie McClelland] Purpose: To evaluate weight-bearing and joint symmetry during the double-leg squat exercise at baseline and after fatigue in patients who have undergone anterior cruciate ligament reconstruction (ACLR) compared to uninjured controls. Methods: Ten males who had returned to sport after primary ACLR participated along with ten uninjured male controls. Lower limb kinematic, kinetic and ground reaction force (GRF) data were collected during double-leg squats at baseline and after a generalised fatigue protocol. Symmetry indices were calculated for hip and knee external flexion moments and the vertical GRF (weight-bearing symmetry) at maximum squat depth. These were compared between ACLR and control groups before and after fatigue using ANOVA models. Results: The ACL group preferentially unloaded the reconstructed limb at baseline, but changed to a more symmetrical load distribution to perform the squat exercise in the fatigue condition. This same loading pattern was seen at both the knee and hip joints. The control group did not show any effect of fatigue. For both groups, symmetry indices were closer to zero (which indicated perfect symmetry) in the fatigue condition. Conclusions: When prescribing squat exercises, it should be recognised that initially, patients with ACLR tend to unload the affected knee. More symmetrical loading patterns may be achieved by inducing bilateral fatigue. When fatigued, loading symmetry was similar between this patient group and controls. This is relevant information for those who implement rehabilitation training programmes. Level of evidence: III. Springer-Verlag Berlin Heidelberg, 2014 ACL nationallicence Knee joint nationallicence Rehabilitation nationallicence Weight-bearing asymmetry nationallicence Biomechanics nationallicence Webster Kate School of Allied Health, La Trobe University, 3086, Melbourne, VIC, Australia aut Austin Darren Department of Physiotherapy, La Trobe University, Melbourne, Australia aut Feller Julian School of Allied Health, La Trobe University, 3086, Melbourne, VIC, Australia aut Clark Ross School of Exercise Science, Australian Catholic University, Melbourne, Australia aut McClelland Jodie Department of Physiotherapy, La Trobe University, Melbourne, Australia aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3208-3213 0942-2056 23:11<3208 2015 23 167 https://doi.org/10.1007/s00167-014-3121-3 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/s00167-014-3121-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Webster Kate School of Allied Health, La Trobe University, 3086, Melbourne, VIC, Australia aut NATIONALLICENCE 700 1- Austin Darren Department of Physiotherapy, La Trobe University, Melbourne, Australia aut NATIONALLICENCE 700 1- Feller Julian School of Allied Health, La Trobe University, 3086, Melbourne, VIC, Australia aut NATIONALLICENCE 700 1- Clark Ross School of Exercise Science, Australian Catholic University, Melbourne, Australia aut NATIONALLICENCE 700 1- McClelland Jodie Department of Physiotherapy, La Trobe University, Melbourne, Australia aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3208-3213 0942-2056 23:11<3208 2015 23 167