Muscle Activity Onset Prior to Landing in Patients after Anterior Cruciate Ligament Injury: A Systematic Review and Meta-Analysis.

摘要: Muscle activation during landing is paramount to stabilise lower limb joints and avoid abnormal movement patterns. Delayed muscle activity onset measured by electromyography (EMG) has been suggested be associated with anterior cruciate ligament (ACL) injury. Therefore, the aim of this systematic review meta-analysis was test hypothesis if ACL-injured patients display different results for timing standard deceleration tasks compared healthy control participants. PubMed, Embase, Scopus ScienceDirect databases were systematically searched over period from January 1980 February 2015, yielding a total 1461 citations. Six studies meeting inclusion criteria underwent quality assessment, data extraction re-computing procedures meta-analysis. The rated “moderate” 2 “poor” 4. Patients included used highly heterogeneous. investigated single leg hopping, decelerating running or walking, tested on 102 participants 86 controls. EMG analyses muscles vastus lateralis, medialis, lateral medial hamstrings revealed trivial non-significant standardised mean differences (SMD 0.05) between Furthermore, no found contralateral controls gastrocnemius 0.05). Based 3 studies, involved legs showed overall earlier = 0.5; p Similar 2.1; p<0.001), greater effect size but based only study. We conclude that there are regarding landing. However, current evidence scarce weak, which highlights need further research in area.