Physiological Factors
Comfort & Fatigue
Biomechanics
MSDs
AI & Technology
100

This physiological factor determines how well a person can see objects under different lighting conditions.

What is visual acuity?

100

This term describes being free of physical pain when using a product.

What is comfort?

100

The study of mechanical movements of the body and how they interact with external forces.

What is biomechanics?

100

This category of disorders affects muscles, nerves, blood vessels, ligaments, and tendons.

What are Musculoskeletal Disorders (MSDs)?

100

This technology analyzes video of a user doing a task and maps the movement of joints to identify risk.

What is task analysis using AI?

200

The maximum amount of force that a muscle or muscle group can exert in a single effort.

What is muscle strength?

200

This can occur over time and results in a feeling of tiredness or weakness.

What is fatigue?

200

The amount of compression, pushing, twisting, pulling, etc. a person can exert.

What is force?

200

Lifting heavy items, bending, reaching overhead, and performing repetitive tasks can increase the risk of these disorders.

What are risk factors for MSDs?

200

The AI system highlights movements that are outside safe parameters using this color.

What is red?

300

This physiological factor determines the range of motion a joint can move before discomfort or injury occurs.

What is flexibility?

300

Sitting for long periods of time or frequently turning a handle can put stress on the body, leading to discomfort and long-term physical issues.

What are physical stresses?

300

Repeating the same motion frequently over time can lead to strain and discomfort.

What is repetition?

300

Poor tool handle design can cause users to grip it in a way that is unsafe and potentially harmful over time.

What is an ergonomic risk?

300

A system designed to track and evaluate repetitive motions, awkward postures, and excessive force to minimize injury risks.

What is AI-based risk analysis?

400

This physiological limitation must be considered when designing temperature-sensitive equipment, such as industrial tools and protective gear.

What is heat and cold tolerance?

400

Designers incorporate this feature into their designs to accommodate different user preferences, such as seat height or mattress firmness.

What is adjustability?

400

Designers must ensure this factor minimizes physical stress when designing computer chairs, workstations, or handheld tools.

What is posture?

400

Users experiencing chronic pain, muscle weakness, or numbness may be suffering from this.

What are symptoms of MSDs?

400

This field combines ergonomics with AI technology to improve workplace safety and efficiency.

What is AI in ergonomics?

500

This factor affects a person’s ability to perform tasks requiring precision and coordination between their hands and eyes.

What is hand/eye coordination?

500

If a product is not comfortable to touch, users may avoid interacting with it. This concept explains why designers focus on comfort to improve user satisfaction.

What is pleasure?

500

Even small tasks, when repeated many times, can cause damage to human tissue over time. This factor measures how long a task is performed or repeated.

What is duration?

500

Fatigued users are more likely to injure themselves, so designers must consider this factor when designing for health and safety.

What is fatigue-related injury risk?

500

Answer: Designers use this type of AI system to predict potential strain or discomfort before a product is even manufactured.

What is AI-driven predictive modeling?