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Changes in the lifestyles in the 21st century

A lifestyle, that is the everyday behaviors, needs and motivations of people, has changed noticeably in the 21st century. We spend most of the time sitting, mainly at work, but also enjoying entertainment and resting. If you remain in a sitting position for a long time, it is necessary to ensure that you use a proper armchair or chair. A modern and ergonomic furniture should be adjusted to the curvature of the human spine, equipped with armrests, a solid base, and should provide the adjustments of all of its parts. Additionally, the seat should be wide enough not to restrict its user’s movements.

Diseases of office employees caused by an incorrect posture.

Sitting position dominates in office work. It does not require much physical effort, but work performed for a long time in this position causes pain and degenerative changes in the locomotor system, mainly in the spine. It is worth to remember that the type and workload degree of employees depends on the time spent working on the computer, the difficulty of performed tasks, commitment and knowledge of program use. During the control of working conditions and training, especially for managers responsible for the work organization, it is worth talking about ailments that the work in incorrect conditions can cause, as well as advise how to prevent these ailments.

Musculoskeletal disorders

These include primarily spinal pain in the lower back, loin, chest and neck areas, which frequently spreads to the upper and lower limbs. Additional symptoms may include neck stiffness, numbness of the hands and feet, decreased muscular strength, problems with mobility, as well as headaches and vertigo. These disorders are caused by long-lasting spinal muscle stress or overload, which leads to intervertebral disc disorders.

Venous thrombosis

Heavy legs after long hours at the desk may indicate venous thrombosis, an occupational disease. Thrombi form in the blood vessels, preventing or hindering blood flow. This condition is very widespread. Untreated, thrombosis leads to serious, possibly life-threatening complications. The condition most frequently affects the calves, but may also affect the thighs and hips as well.

Carpal tunnel syndrome

This condition results from compression of the median nerve, which runs through the wrist. It is caused by constantly repeated hand movements and improper arm placement when working in the sedentary position. Frequent symptoms include: numbness or tingling in the fingers, weakened muscles, restricted hand movement and difficulty holding items.

Proper posture at the desk

prawidlowa pozycja siedzenia
 
 

Spine – Head

The proper adaptation and regulation of the seat, backrest, lumbar support and headrest ensure the appropriate spine and head support, as well as correct body posture while sitting. A dynamic backrest offers permanent support of the spine when moving and lumbar support adjustment fitting the spine curvature maintains body in the right position.

 
 

Arm – Forearm

The armrests set at the appropriate height can be used as an extension of the desk, ensuring the proper forearm placement, which relieves spinal and shoulders. As a result, the proper angle between the arm and the forearm is achieved, enabling the hand to be pointed downward without strain.

 
 

Thigh – Calf

A height-adjustable seat enables the feet to rest firmly on the ground. Seat depth adjustment prevents excessive leg strain and does not constrict blood flow. A properly-adjusted seat enables the thighs to rest comfortably – perpendicular to the calves and parallel to the floor.

Ergonomic chairs

Chair construction improving work ergonomics:

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Lumbar support

Adjustable height and depth make it possible to adjust the chair to the curvature of the user’s spine. A well-adjusted lumbar support ensures comfortable spine support, reducing strain during work.

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Backrest

wide, shaped to match the curvature of the spine, offers good support and stability. Backrest height adjustment enables the user to adapt the backrest to best fit the entire back, especially at the loin level.

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Seat

large, appropriately shaped, made of a flexible and durable material, ensures proper hip positioning, preventing compression and blood flow constriction. Up-down and depth adjustment enables the user to move the seat forward and back and adjust its height, ensuring optimal leg support and minimising thigh strain. Tilting the seat forward puts the chair in “work mode”, while also reducing thigh strain when seated.

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Headrest

with up-down and angle adjustment, offers appropriate support and reduces neck strain.

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Armrests

height-adjustable with sideways and forward-back adjustable attachments, offering proper support for the forearms, ensuring a comfortable and ergonomic working experience, in addition to reducing shoulder and spinal strain.

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Mechanism

depending on the model, the mechanism should enable the user to adjust the individual elements of the chair to match their preferences, ensuring the ergonomics of sitting by e.g. adjusting backrest and seat tilt resistance to the user’s weight, offering a synchronous or asynchronous seat and backrest movement, height adjustment, seat depth adjustment and the ability to lock the mechanism in certain positions.