Ergonomic Office chairs. This work is an exploration of the ergonomic factors that may determine spinal pathology that results in spinal dysfunction which includes Backache, Low Back-Pain (LBP) & more serious breakdown of spinal components.
- It is intended as a resource for the designers of ergonomic or office work chairs, whether of the conventional upright office chair type or more modern concepts.
Once identified, corrective measures are described which can be developed to be incorporated into both initial design & remediation of ergonomic chairs.
- Correct ergonomics are the essential and fundamental requirements for any chair design and also determine comfort.
- Misconceived views can be avoided. Designers seem to have difficulties with the science behind ergonomics judging by the surprising number of poor ergonomic chairs in the market. ☛ Why?
- And the poor, even wrong, advice offered.
- Most ergonomic chairs are upright and only susceptable to partial remediations of the adverse effects of The upright seated posture.
- Whether partial or full the basic ergonomic requirements for ergonomic chairs for Sitting safely is described under ☛REMEDIATION →
- The fully optimised concept involves a reclined work-mode and is the ☛The 2Tilt concept, the ultimate remediation →
- This fully optimised design concept, suggested for an optimal solution to Low Back Pain, provides a resource for chair designers of ergonomic chairs and, indeed, of any chair..
- It is also very relevant for manufacturers of retail office ergonomic chairs if they wish to improve the ‘ergonomics’ of their ergonomic chairs with overwhelming health selling points.
- And to Interior designers and architects involved with office design and not forgetting the ‘end user’ who has the ultimate benefit and may be suffering from Back Pain .
For navigation & overview of of contents…..
This is indicated in the top menu↑. Most posts are shown in the menu on the right→ ( a few can only be accessed through the page from which they are derived).
Specialists may prefer to jump directly to their page of interest using the Right menu→. See the SPECIALIST page → This includes a large body of research and background, on spinal bio-mechanics. The essential reading is :-
- The SCIENCE
- BIOMECHANICS that determine safe sitting
- 2T CONCEPT a full solution
Manufacturers can be reassured that feasibility indicates that existing components can be used , avoiding the expense of retooling, while preserving their brand image. Prospective manufacturers can be helped to leap ahead of the field, New ideas can create both threats and opportunities , once both familiarity and normalcy biases are overcome. Creative disruption works.
For New offices ‘Coolness’ is the word to excite media interest for both the company and the Architect/Designer. Most firms aspire to project this cutting edge image. A 2T chair, or the derived 4M workstation, answers this exactly and in addition reduces LBP and increases productivity by lessened morbidity and stress. ( Also see ☛ Ergonomics and office stress.→ )
Office managers should consult this blog as a resource. It allows an alternative view to the usual hype, often laughably misguided, from manufacturers,
And not forgetting the interest of all chair users ……
Backache & chairs. A number of systems are described. Spinal bio-mechanics dictates that prolonged Sitting safely should be performed in a reclined position with frequent change of posture. For a full remediation a number of requirements are essential. To be effective these are detailed in the 2 Tilt (2T) concept.
Science, and some relevant topics
- Spinal anatomy includes a number of detailed studies of the more relevant component parts and an account of the paleoanthropology which resulted in the vulnerability of the lumbo-sacral junction. ☛ Spinal Anatomy→
- Biomechanics in relation to sitting postures. ☛ Spinal biomechanics→.
- How did we arrive here? ☛ Paleo Anthropology →
- In addition,The way we sit now, further explores present sitting including the comments (☛Why? Mandal explains…→), Gorman and others. Comparisons are made with various existing chairs (☛How do they measure up?→).
Ergonomic chairs – REMEDIATION
- Partial solutions, the only option for an upright ergonomic chairs, include:-
- Full solution. No chair yet in the market.
- obvious, and perhaps only, solution was for prolonged work to be performed in a chair that has a stable, correctly supported, supine reclined mode.
The big story here, however, is that it was found that a reclined mode is the only position that avoids all the adverse effects of prolonged upright sitting. For a reclined office work-chair to be practical a number of requirements are essential.
Combining these requirements can be difficult to achieve but is possible in a suitably supported reclined mode at 40-45° which conforms to spinal morphology (configuration). This alone is impractical as a work position unless a number of secondary requirements are incorporated to make this simple concept suitable and practical for sitting safely in a work chair.
- A reclined mode which has a correctly supported, supine, stable position for prolonged work ☛2T reclined mode→
- An upright mode required for certain jobs. ☛2T Upright mode→
- An unstable intermediate mode to enable a quick, easy transition between the 2T modes. ☛2T transition mode→ With the recognition that the transition movement has physiological advantages, this has been upgraded to a ‘mode’. ☛dynamic seating→. The 2T now becomes a triple-mode (3M) concept.
These 3 modes constitute the basis of the 2T CONCEPT .
- The office environment it’s relation to physiological and psycho-social stress, ergonomics and remediation.