The relationship between external knee moments and muscle co-activation in subjects with medial knee osteoarthritis

Autor(es)

Approbato Selistre, Luiz Fernando ; Mattiello, Stela Marcia ; Nakagawa, Theresa Helissa ; Goncalves, Glaucia Helena ; Petrella, Marina ; Jones, Richard Keith

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY; v. 33, p. 64-72, APR 2017.
• Citações Web of Science: 4

Resumo

Purpose: External knee moments are reliable to measure knee load but it does not take into account muscle activity. Considering that muscle co-activation increases compressive forces at the knee joint, identifying relationships between muscle co-activations and knee joint load would complement the investigation of the knee loading in subjects with knee osteoarthritis. The purpose of this study was to identify relationships between muscle co-activation and external knee moments during walking in subjects with medial knee osteoarthritis. Methods: 19 controls (11 males, aged 56.6 +/- 5, and BMI 25.2 +/- 3.3) and 25 subjects with medial knee osteoarthritis (12 males, aged 57.3 +/- 5.3, and BMI 28.2 +/- 4) were included in this study. Knee adduction and flexion moments, and co-activation (ratios and sums of quadriceps, hamstring, and gastrocnemius) were assessed during walking and compared between groups. The relationship between knee moments and co-activation was investigated in both groups. Findings: Subjects with knee osteoarthritis presented a moderate and strong correlation between co-activation (ratios and sums) and knee moments. Interpretation: Muscle co-activation should be used to measure the contribution of quadriceps, hamstring, and gastrocnemius on knee loading. This information would cooperate to develop a more comprehensive approach of knee loading in this population. (C) 2017 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 13/23644-0 - Momento adutor do joelho durante a marcha, torque abdutor do quadril e biomarcadores: estudo na progressão da osteoartrite do joelho
• Beneficiário: Luiz Fernando Approbato Selistre
• Modalidade de apoio: Bolsas no Brasil - Doutorado