Affiliations: [a] Faculty of Rehabilitation, Józef Piłsudski University of Physical Education in Warsaw, Warsaw, Poland
| [b] Institute of Physiotherapy, University of Rzeszów, Rzeszów, Poland
Correspondence:
[*]
Address for correspondence: Justyna Drzał-Grabiec, Institute of Physiotherapy, University of Rzeszów, 26 Warszawska Str. 35-205, Rzeszów, Poland. Tel.: +48 691 588 185; Fax: +48 17 872 19 42; E-mail: justyna.drzal.grabiec@wp.pl.
Abstract: BACKGROUND:The aim of the study was to determine the parameters of the postural changes between two sitting positions: sitting on a saddle chair compared to sitting on an office chair. OBJECTIVE:The aim of the study was to determine the impact of an adjustable saddle chair compared to an adjustable office chair with a backrest on sitting posture. METHODS:The study involved 60 healthy subjects, mean age 24.7±2.3 years. The study used a MORA 4G system, operating on the basis of spatial photogrammetry. RESULTS:It was found that there were statistically significant differences regarding the depth of thoracic kyphosis and the angle of the trunk forward inclination. These values were lower when measured on a saddle chair, and the inclination of the upper thoracic section and the lumbar lordosis depth were significantly higher when sitting on a saddle chair. CONCLUSIONS:Sitting on the saddle chair caused the positive effect of an increase of lumbar lordosis. A significant increase in the protraction in the cervical spine was observed, which would be considered to be a negative effect.
Keywords: Physiotherapy, prophylactic, posture, ergonomics, sitting position
