Figure 9From: Effects of cervical muscle fatigue on the perception of the subjective vertical and horizontalGraphical representation of the vertical and horizontal combined +18 and -18 scores for each isometric contraction direction. Extension (E), right posterior oblique (RPO), right lateral flexion (RLF), right anterior oblique (RAO), left posterior oblique (LPO), left lateral flexion (LLF), left anterior oblique (LAO), and flexion (F).Back to article page