Fig. 5From: Neck Muscle EMG-Force Relationship and Its Reliability During Isometric ContractionsTest-retest reliability of the EMG-force relationship over the full force range. Solid lines denote point estimates of the standard error of measurement (SEM), and dotted lines its 95% confidence interval (CI). Lines with squares marks point estimates of the intraclass correlation coefficient (ICC), and dashed lines its 95% CIBack to article page