Impact of an ergonomic seat on the stand-to-sit strategy in healthy subjects: Spinal and lower limbs kinematics

Autor: Jean-Claude Bernard, Stéphane Verdun, Camille Samuel, R. Bard-Pondarré, Grégoire Le Blay, Emmanuelle Chaleat-Valayer, Eric Berthonnaud
Rok vydání: 2019
Předmět:
Adult
Male
medicine.medical_specialty
Lordosis
Physical Therapy
Sports Therapy and Rehabilitation
Human Factors and Ergonomics
Kinematics
03 medical and health sciences
fluids and secretions
0302 clinical medicine
Physical medicine and rehabilitation
medicine
Humans
0501 psychology and cognitive sciences
Range of Motion
Articular
Safety
Risk
Reliability and Quality
Engineering (miscellaneous)
050107 human factors
Stand to sit
Sitting Position
business.industry
digestive
oral
and skin physiology
05 social sciences
Healthy subjects
Equipment Design
medicine.disease
030210 environmental & occupational health
Healthy Volunteers
Spine
Biomechanical Phenomena
Lower Extremity
Healthy individuals
Standing Position
Female
Ergonomics
Lumbar lordosis
business
High standard
Hip flexion
Interior Design and Furnishings
Zdroj: Applied Ergonomics. 80:67-74
ISSN: 0003-6870
Popis: To assess differences in spinal, pelvic and lower limb parameters in healthy individuals during a stand-to-sit task using three different seating conditions.Ten healthy adults carried out three stand-to-sit movements on different stools: a high ergonomic stool with the seat tilted 10° forward; a standard stool (adjusted to the same height as the ergonomic stool) and a standard stool at a lower level (so their thighs were horizontal). Movements were recorded by an optoelectronic Vicon system.Hip flexion was altered by the height of the seat (significantly greater for the low standard stool in comparison to either the ergonomic stool or the high standard stool (p 0.0001)). There was also significantly less knee flexion with the ergonomic stool in comparison to the low standard stool (p 0.0001) and to the high standard stool (p = 0.0017). Lumbar lordosis was not significantly altered by seat height, although it was less pronounced with the ergonomic stool, with a significantly higher range of motion for the pelvis (p = 0.015). At the thoracic level, no differences were observed, except that the stand-to-sit movement on the lower stool produced greater flexion.Lumbar lordosis was not increased by the ergonomic stool and the range of lower limb motion was reduced by the high seat. These findings contrast with current opinion that ergonomic seats promote lumbar lordosis.
Databáze: OpenAIRE
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