Associação da ativação do glúteo máximo e médio nas variáveis cinéticas do quadril e joelho em tarefas funcionais unipodais: uma revisão sistemática

Abstract

Single-leg functional tasks are commonly included as assessment and intervention strategies in several dysfunctions. They require appropriate motor control to maintain lower limb alignment during movement. Although the neuromuscular control of the gluteus maximus (GMAX) and gluteus medius (GMED) is considered important in lower limb alignment, which would be associate with the knee and hip kinetic variables, consistent data-pooling to clarify that association during single-leg functional tasks is still missing. Thus, this study evaluated the current knowledge of the associations of gluteal electromyographic (EMG) activity with knee and hip kinetic variables during single-leg functional tasks. The study is a systematic review whose searches were performed in the following indexing databases: PubMed, CINAHL, MEDLINE, Web of Science, and Sportdiscus, where cross-sectional studies were selected with asymptomatic individuals and containing outcomes from hip and knee kinetics measured by 3D or 2D motion analysis, EMG activities of GMED and GMAX. Study quality was rated with the Joanna Briggs Institute Critical Appraisal Checklist for Cross-Sectional Studies, and study selection, assessment, and data extraction procedures were conducted by two independent reviewers. The searches resulted in 391 studies, with 3 studies included for the review. The reduced GMAX activation was associated with greater internal rotation angle and moment hip, and the reduced GMED activation was associated with greater adduction angle and moment hip and knee abduction moment. Although the studies have shown a possible association between the variables, the results need to be interpreted with caution, due to the small sample size and low methodological quality of the studies, which range from moderate to high risk of bias.