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Clinical Biomechanics & Ergonomics Laboratory

Run ID:	Seated_v2_20260206_123126
Date:	2026-02-06
Standard:	ISO 11226 / SWA Code of Practice
Subject:	Seated DSE User

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HIGH RISK CLASSIFICATION
Critical static loading detected. The subject maintained a fixed posture for 147 seconds (100% of session) with zero recovery breaks. Combined with 98.3% Non-Neutral Trunk Posture and 100% High-Risk Neck Flexion, this profile indicates immediate risk of cumulative musculoskeletal strain.

Video Analysis

Recorded session video analysis - Duration: 146.8s (2.45 min)

1. Postural Exposure (ISO 11226)

Trunk Flexion (Sagittal)

54.3° (Mean) AMBER ZONE DOMINANT

Safe: 0.0% Warn: 98.3% Crit: 1.7%

Cervical Flexion

61.9° (Mean) CRITICAL EXPOSURE

Safe: 0.0% Critical: 100.0%

2. Temporal & Static Loading

Max Static Hold 147s

Limit: <60s (ISO)

Posture Changes 0.0

Per Minute

Cervical Drift +7.4%

Fatigue Indicator

* Clinical Note: Zero "Micro-breaks" detected. Muscular blood flow is compromised after 60s of static loading.

3. Detailed Biomechanical Analysis

Metric	Value	Zone / Status	Interpretation
Forward Head Posture (Ratio)	0.44	HIGH	Significant anterior skull migration. Increases effective head weight on C7/T1 by ~300%.
Trunk Asymmetry	41.7°	SEVERE	Dominant lean to RIGHT. Indicates monitor or input device is not centered.
Upper Arm Elevation	41.5°	HIGH	Shoulders elevated >35° for 72% of time. Keyboard/Desk likely too high.

4. Corrective Action Plan

Immediate: Micro-break Intervention. The "static bout" of 147s is the primary risk factor. Implement a timer to prompt movement every 20 minutes (20-20-20 rule).
Workstation Geometry. The 41.7° asymmetry and right-side dominance suggests the primary screen is offset. Center the monitor and keyboard to the user's midline.
Cervical Support. Neck flexion is consistently >60°. Raise the monitor height by at least 15-20cm to bring the top of the screen to eye level.