An assessment of seated activity and postures at five workplaces

Graf, M.; Guggenbühl, Urs; Krueger, Helmut

doi:10.1016/0169-8141(94)00027-z

Cited by 71 publications

(39 citation statements)

References 7 publications

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“…For instance, it seems necessary to enable frequent change between body postures provided that they are healthy and stable in order to improve seating comfort [5]. Graf et al [6] also supported that natural movements (within an acceptable range) are desirable in workplaces. Furthermore, Fujimaki and Noro [7] showed in their research that during prolonged sitting natural movements occur in order to decrease discomfort.…”

Section: Introductionmentioning

confidence: 99%

“…Previous research on comfort in office work has suggested that allowing for body movement is beneficial when the task does not allow for non-sedentary activities [5][6][7][8][9][10][11][12][13]. For instance, it seems necessary to enable frequent change between body postures provided that they are healthy and stable in order to improve seating comfort [5].…”

Section: Introductionmentioning

confidence: 99%

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Investigating Car Passenger Well-Being Related to a Seat Imposing Continuous Posture Variation

Veen¹,

Orlinskiy²,

Franz³

et al. 2015

J Ergonomics

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Static sitting when travelling by car is known to cause physical fatigue. It is generally encouraged to periodically engage in non-sedentary activities, but this is not possible when traveling by car. The present study aims to investigate the influence of moving the vehicle occupant's body passively. This posture variation is realized by continuously varying the seat configuration, i.e., the seat pan and backrest inclination. For the experiment, 21 participants sat twice on the same seat for 45 minutes: Once in a static and once in a dynamic configuration. The measurements obtained were the observation of body movements and questionnaires on perceived discomfort, seating comfort and experiential feelings. The results show that participants move significantly more in the static configuration and that they perceive more discomfort. The seat's comfort and support are evaluated significantly better in the dynamic configuration. The dynamic configuration results in participants feeling significantly more active, energetic, stimulated, pleasantly surprised, pleased, comfortable, accepting and calm. The static configuration results in the participants feeling marginally more tired and significantly more bored. Further research should investigate the effects in the context of driving on the road and an actual driving task. However, it can be concluded that the continuous movements of the seat have a beneficial effect on objective and subjective indicators of well-being.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigating Car Passenger Well-Being Related to a Seat Imposing Continuous Posture Variation

Veen¹,

Orlinskiy²,

Franz³

et al. 2015

J Ergonomics

View full text Add to dashboard Cite

show abstract

“…Previous studiesshowed there is relationship between lumbar spine and other body parts discomfort there is change in posture and increase the stress on spine and musculature in our study we evaluate the lumbar spine through scoliometer and find that there is change in posture as well as increase in lumbosacral angle due to the lack of back support. 21,22,23,24,25 …”

Section: Disscusionmentioning

confidence: 99%

“…Although earlier research has evident that seated posture effect on back muscles activities that cause fatigability but no results found lumbopelvic muscles fatigue in floor sitting, particularly in crossed-leg sitting posture 3 . Furthermore, musculoskeletal disorders and disturbance in body caused by wrong sitting poor posture 4,5,6 . In relation to ergonomic, authentication in sitting on motorcyclists riding consider a key factor.…”

mentioning

confidence: 99%

Evaluate the Associated Deformities in Motor Bike Riders

Rashad¹,

Habib²

2017

ijcrr

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Abstract:Objective: The aim of the study is to check the associated deformities due to of bike riding.Study Design: Observational study.Sample Size: 30 Participant meeting the inclusion criteria were enrolled. Sample population:Undergraduates of Ziauddin College of physical therapy and physiotherapist of Ziauddin hospital. Method:Every participant was asked to stand in a quiet room with air condition at 26 degree and proper lightening. We informed the participant about full procedure and distribute the consent form among all participants. Each participant attended an experiment on different stations to measure different deformities. Each session consisted for 15-20 minutes. Participant voluntarily responded the pre survey questionnaire before experiment. Afterward physical examination is done i.e. height and weights of participants are taken. During session scoliosis, kyphosis, bilateral shoulder shift and lumber lordosis are measured at each station and then participants are allowed to rest there for 5 minutes.Result: Result showed that there is a significant effect of having pain due to prolong riding and faulty posture. Conclusion:There was no significant effect on life style, type of bike use, duration of riding bike from years to years, estimated time of riding, localized pain, pain spread, numbness after riding, feeling pain in sitting or standing on cervical, thoracic, lumber spine, shoulder and neck.But there was a significant effect on cervical, lumber and thoracic spine in bike rider which having pain while riding, prolong riding time and faulty sitting posture.

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“…For example, air cells with pressure sensors to monitor the pressure distribution on the buttock are often utilized to provide timely adjustment of the shape of the seat cushion to relieve concentrated pressure [5][6][7]. "Dynamic seating" on the wheelchair, in which a poweroperated seat adjustment mechanism would allow the user to maintain proper posture, was also proposed [8].…”

Section: Introductionmentioning

confidence: 99%

Seat Adjustment Design of an Intelligent Robotic Wheelchair Based on the Stewart Platform

Hsu

Lü

et al. 2013

International Journal of Advanced Robotic Systems

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A wheelchair user makes direct contact with the wheelchair seat, which serves as the interface between the user and the wheelchair, for much of any given day. Seat adjustment design is of crucial importance in providing proper seating posture and comfort. This paper presents a multiple-DOF (degrees of freedom) seat adjustment mechanism, which is intended to increase the independence of the wheelchair user while maintaining a concise structure, light weight, and intuitive control interface. This four-axis Stewart platform is capable of heaving, pitching, and swaying to provide seat elevation, tilt-in-space, and sideways movement functions. The geometry and types of joints of this mechanism are carefully arranged so that only one actuator needs to be controlled, enabling the wheelchair user to adjust the seat by simply pressing a button. The seat is also equipped with soft pressure-sensing pads to provide pressure management by adjusting the seat mechanism once continuous and concentrated pressure is detected. Finally, by comparing with the manual wheelchair, the proposed mechanism demonstrated the easier and more convenient operation with less effort for transfer assistance.

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An assessment of seated activity and postures at five workplaces

Cited by 71 publications

References 7 publications

Investigating Car Passenger Well-Being Related to a Seat Imposing Continuous Posture Variation

Investigating Car Passenger Well-Being Related to a Seat Imposing Continuous Posture Variation

Evaluate the Associated Deformities in Motor Bike Riders

Seat Adjustment Design of an Intelligent Robotic Wheelchair Based on the Stewart Platform

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