Human performance

¡Es•Physical ergonomics

• Match between the design of the physical aspects

of tasks, equipment, environments and the

dimensions and capabilities of the human body

Cognitive ergonomics • Match between the design of the information processing and decision-making aspects of tasks, equipment & systems, and the perceptual, mental, & psychomotor capabilities of humans

•Organizational ergonomics • Match between the organization of socio-technical systems, and the human requirements for coordination, communication and other functions necessary for system performance

Design is a process of generating a solution to a problem • Intuition, creativity, curiosity and playfulness are useful and important, but they are not sufficient. We need a process to guide these towards a solution that will address the real problem

• The design must be based on the requirements • Use an iterative process of designing, evaluating, refining • Involve the users/workers in the evaluations (and in the design if possible)

Functional- lo que se necesita para funcionar

Non-functional Requirements: criteria that needs to be met for business or legal reasons: Cost

Ergonomic requirements

• Physical needs of worker ● Occupy space ● Move limbs –

Cognitive needs of worker

● Know what activities should be performed now, or what options are available ● Understand current state of process ● Risks to process,

Ongoing costs

• Utilities (electricity, gas)

• Worker time

• Periodic training

• Cost of errors (rework, scrap)

• Medical costs

• Absences (downtime)

• Turnover of workers (recruiting,

hiring, training, lower

performance at start)

One time costs

• Cost of researching and

designing intervention

• Equipment costs

• Installation costs (including

downtime)

• One-time ret

What to consider to achieve those goals • Posture of the spine • Especially the position of and pressure within the disks • Affected by hip rotation • Type and amount of muscle work required to maintain work postures • Including individual fatigue tolerance levels • Compression of tissues (blood vessels and nerves) • Under sit bones • Back of thighs • Behind knees