Posture Risk Score Formula

Understand the math behind the posture risk score. Each variable explained with a worked example.

Use the Posture Risk Score

Formulas Used

Posture Risk Score

posture_risk = min(sitting_hours * 5 + max(6 - stretching_per_day, 0) * 5 + ergonomic_setup, 100)

Recommended Breaks

recommended_breaks = ceil(sitting_hours * 2)

Sitting % of Waking Hours

sitting_pct = sitting_hours / 16 * 100

Variables

VariableDescriptionDefault
sitting_hoursHours Sitting per Day(hours)8
stretching_per_dayStretch/Move Breaks per Day(breaks)3
ergonomic_setupErgonomic Setup Quality5

How It Works

Posture Risk Assessment

Scoring Components

  • Sitting hours: 5 points per hour
  • Missing stretch breaks: 5 points per missing break (below 6/day)
  • Poor ergonomics: up to 10 points

    • Risk Levels

    | Score | Risk | |---|---| | 0-25 | Low | | 26-50 | Moderate | | 51-75 | High | | 76+ | Very high |

    Research suggests taking a movement break every 30-45 minutes during prolonged sitting.

    Worked Example

    8 hours sitting, 3 stretch breaks, average ergonomics.

    sitting_hours = 8stretching_per_day = 3ergonomic_setup = 5
    1. 01Sitting = 8 x 5 = 40
    2. 02Missing breaks = (6 - 3) x 5 = 15
    3. 03Ergonomics = 5
    4. 04Total = 40 + 15 + 5 = 60 (High risk)

    Ready to run the numbers?

    Open Posture Risk Score