What do physiotherapists consider to be the best sitting spinal posture?
ABSTRACT While sitting is a common aggravating factor in low back pain (LBP), the best sitting posture remains unclear. This study investigated the perceptions of 295 physiotherapists in four different European countries on sitting posture. Physiotherapists selected their perceived best sitting posture from a sample of nine options that ranged from slumped to upright sitting, as well as completing the back beliefs questionnaire (BBQ). 85% of physiotherapists selected one of two postures as best, with one posture being selected significantly more frequently than the remainder (p < 0.05). Interestingly, these two most frequently selected postures were very different from each other. Those who selected the more upright sitting posture had more negative LBP beliefs on the BBQ (p < 0.05). The choice of best sitting posture also varied between countries (p < 0.05). Overall, disagreement remains on what constitutes a neutral spine posture, and what is the best sitting posture. Qualitative comments indicated that sitting postures which matched the natural shape of the spine, and appeared comfortable and/or relaxed without excessive muscle tone were often deemed advantageous. Further research on the perceptions of people with LBP on sitting posture are indicated.
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ABSTRACT: Objective: The aim of this study is to develop an ergonomic office chair that has an alarm function for the unbalanced sitting postures. Background: Contrary to expectation, it is reported that office workers sit on their chairs much more in unbalanced postures during daily work. Even though an office worker uses an ergonomically good-designed chair and begins their work in a good sitting posture, his/her posture is likely to shift to the unbalanced bad posture. Therefore, a posture alarm system would be very helpful in keeping office workers' good postures. Method: We developed a prototype chair with four load cells under a seat pan and one load cell beneath a backrest. Through some experiments, we set the criteria for unbalanced bad postures then implemented the criteria into the alarm system of the prototype chair. The chair called e-BASE chair could detect unbalance postures and show alarms for chair users. We also enhanced back support by developing a step-wised folding backrest. Results: The e-BASE chair showed better performance in interface pressure distributions and balanced posture ratio in VDT work. Conclusion: The ergonomic chair with posture alarm function(e-BASE chair) was developed. It showed better performance in seat pressure distribution and in keeping good posture during office work. Application: The posture alarm system and folding backrest can be applied to the new models of office chair.Journal of the Ergonomics Society of Korea. 02/2013; 32(1).
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ABSTRACT: [Purpose] The purpose of this study was to investigate the relationship between age and the maximum pelvic anteversion and retroversion angles, as well as the associated pelvic range of motion, measured in a sitting position with free knee movement. [Subjects] A total of 132 healthy volunteers (74 women, 58 men; age range, 20-79 years) were divided into six groups based on age (20-29, 30-39, 40-49, 50-59, 60-69, and 70-79 years). [Methods] The maximum pelvic anteversion and retroversion angles were measured manually five times by a goniometer in a sitting position that allowed free movement of the knee joints. [Results] There was a significant effect of age group on the maximum pelvic anteversion and retroversion angles and pelvic range of motion (the difference between these angles). There was a significant correlation between age and the maximum pelvic anteversion angle, maximum pelvic retroversion angle, and pelvic range of motion. [Conclusion] The maximum pelvic anteversion and retroversion angles and pelvic range of motion were significantly correlated with age. The maximum pelvic anteversion angle and pelvic range of motion were most affected by age.Journal of Physical Therapy Science 12/2014; 26(12):1959-61. · 0.20 Impact Factor
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ABSTRACT: Study design:Descriptive.Objective:To determine the wheelchair appropriateness in patients with spinal cord injury (SCI).Setting:National Rehabilitation Center in Ankara, Turkey.Methods:Twenty-seven (25 male, 2 female) SCI patients were included. Demographic and clinical characteristics of the patients were noted. All wheelchairs were evaluated considering each part (seat length, seat depth, seat height, back height, armrest, headrest, wheels and seat belt) by a physiatrist who had attended the wheelchair-training course. The wheelchair was declared as inappropriate if at least three parts of wheelchair were not appropriate.Results:The mean age of the patients was 32.9±9.3 years and mean duration of wheelchair use was 19.63±23.02 months. Among the patients, 21 (77.8%) were American Spinal Injury Association Impairment Scale (AIS) A, 4 (3.7%) AIS B, 1 (3.7%) AIS C and 1 (3.7%) AIS D. Five (18.5%) wheelchairs were motorized and 22 (81.5%) were manual. Overall, 15 (55.6%) wheelchairs were inappropriate. Seat height, cushion and back height were the most common inappropriate parts.Conclusion:In light of our first and preliminary results, we can argue that 55% of the patients with SCI use inappropriate wheelchairs. In order to achieve better mobility; personally designed wheelchairs should be prescribed by the clinicians.Spinal Cord advance online publication, 12 August 2014; doi:10.1038/sc.2014.128.Spinal Cord 08/2014; · 1.70 Impact Factor