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. Pectoralis Major Pars Abdominalis Pectoralis Major (Abdominal Head) · right · Shoulder Literature

Position: Over the pars abdominalis (lowest fibres), close to the sternum - of three sites compared, the medial one yielded the highest activity
Orientation: Along the muscle fibres, 2 cm inter-electrode distance
Signal check: Flex the arm, abduct above 90°, medially rotate or horizontally adduct.
Crosstalk from: anterior deltoid · sternocostal portion of pectoralis major · pectoralis minor
MVC test: Prone on a bench pressing against a fixed long bar, or a push-up position; both at 90° elbow flexion. Seated alternative: both hands press a rigid block in front of the chest.
Fixation: Very good shoulder and back support is the decisive factor in every variant.
Resistance: Fixed bar (prone) or the floor (push-up); pressing / horizontal adduction against it.

Skin prepared ImpedancekΩ Signal check ok MVC peakµV Note

Sources: Król et al. 2007 · Signal check & crosstalk: Criswell 2011 · MVC test & set-up: Konrad 2005
Live on the 3D model: emgguide.de/?muscle=pectoralis_major_abdominal_r
Visualise the activation live: easyEMG · Educational reference, not a medical device. For use by trained persons following the manufacturer's instructions. emgguide.de/disclaimer