Comparison between orthostatic squat and horizontal squat for validation of a novel device: semg of the lower limb

Providing load during dynamic lower limb CT acquisition has not been possible yet. This study aimed to explore the feasibility of a new device to create a weight-bearing condition during horizontal squat (HS)and to compare it to a wall orthostatic squat (OS). 3D kinematics and surface EMG (sEMG) were investigated in 15 healthy subjects. sEMG showed from moderate to excellent reliability across different resistances provided. The ICC ranged between 0.14 and 0.78. The highest value (0.78) was found for 55BW%. This study demonstrates the possibility to achieve adequate similarity regarding muscle activity between HS and OS with our device. This knowledge should allow us to perform dynamic CT technology acquisition of the lower limb during loading in clinical practice.