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. Adductor Magnus Adductor Magnus · right · Hip Literature

Position: At 60% of the distance from the greater trochanter to the lateral knee joint line, in the middle of the muscle belly between the posterior border of gracilis and the anterior border of the medial hamstrings
Orientation: Along the muscle fibres, 2 cm inter-electrode distance. Borders were located by ultrasound in the source - without ultrasound this is an approximation and crosstalk from adjacent adductors is possible
Signal check: Press the knees together (adduction); walking.
Crosstalk from: adductor longus and gracilis — Criswell describes only this group site for the adductors, no separate position for the magnus · vastus medialis · hamstrings
MVC test: Supine or seated with flexed legs; a big, stiff roll cushion is pressed between the knees.
Fixation: The cushion itself provides the rigid resistance; pelvis stable.
Resistance: Isometric adduction against the cushion.

Skin prepared ImpedancekΩ Signal check ok MVC peakµV Note

Sources: Elsais et al. 2020 · Signal check & crosstalk: Criswell 2011 · MVC test & set-up: Konrad 2005
Live on the 3D model: emgguide.de/?muscle=adductor_magnus_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