EMG session sheet

Electrode positions, signal check and MVC test on one sheet

emgguide.de
25.10.2026

Date

Subject / ID

Examiner

Device · sampling rate

Recording set-up per Konrad 2005: Inter-electrode distance 2 cm (centre to centre) · Skin impedance: aim < 10 kΩ, up to 30 kΩ acceptable, above 50 kΩ prepare again · Band-pass 10–500 Hz · Sampling ≥ 1000 Hz · no notch filter

S1 M. Obliquus Externus Abdominis External Oblique · left · Trunk Anterior Literature

Position: Below the lowest rib, 45 degrees to the horizontal
Orientation: Parallel to the muscle fibers (oblique, approx. 45 degrees)
Signal check: Rotate the torso; diagonal sit-up.
Crosstalk from: internal oblique · rectus abdominis · latissimus dorsi · quadratus lumborum
MVC test: Side-lying with legs and hips fixed; flex the trunk up and fix it early in the flexed position.
Fixation: Legs and hip fixed with belts or manually.
Resistance: Fixation itself (isometric hold); an added trunk rotation may raise the oblique activity.

Skin prepared ImpedancekΩ Signal check ok MVC peakµV Note

Sources: Ng et al. 1998 · Signal check & crosstalk: Criswell 2011 · MVC test & set-up: Konrad 2005
Live on the 3D model: emgguide.de/?muscle=obliquus_externus_l
Visualise the activation live: easyEMG · Educational reference, not a medical device. For use by trained persons following the manufacturer's instructions. emgguide.de/disclaimer