Assessment of Trunk Muscle Co-contraction during Multi-axial Movements
نویسندگان
چکیده
INTRODUCTION It has been well documented that individuals with chronic low back pain (CLBP) tend to exhibit different muscle activation patterns in the trunk musculature when compared with healthy individuals. Studies investigating the flexion relaxation phenomenon have observed the persistence of muscle activation during full trunk flexion in CLBP [1], while Silfies et al. [2] found that CLBP exhibited higher abdominal activation levels during loaded reaching movements. These previous findings highlight the importance of understanding the neuromuscular control of movement in healthy individuals, which can then in turn be compared to CLBP patients. However, trunk muscle activation patterns have typically only been assessed during single plane movements; in addition, muscles are generally examined in isolation, as opposed to investigating the relationships between muscles’ activation patterns. Therefore, the aim of this study was to assess global co-contraction levels of the trunk musculature during both single-plane and multi-axial movements in sitting and standing postures.
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