Psychological stress and long-term blood pressure variability of military young males: The cardiorespiratory fitness and hospitalization events in armed forces study

Figure 1 Standard deviation and average real variability for systolic blood pressure variability denoted as SD_SBP and ARV_SBP respectively presented by dotted and solid lines. Average real variability was defined as the average absolute difference between successive measurements of blood pressure, and it takes the order of measurements into account [(|Δ1| + |Δ2| + |Δ3|)/3]. SBP: Systolic blood pressure; SD_SBP: Standard deviation for systolic blood pressure variability.