Figure 1From: Accuracy and precision of variance components in occupational posture recordings: a simulation study of different data collection strategies Upper arm postures during an illustrative full shift; minute-by-minute values of average elevation, percentage time above 90°, and percentage time below 15° (top to bottom). The vertical line at minute #337 separates original data (solid curve) from simulated data (dashed curve) added to achieve a full 480 minute shift.Back to article page