Relationship between comfort and back posture and mobility in sitting-posture

Vergara, Margarita; Page, Álvaro

doi:10.1016/s0003-6870(01)00056-4

Cited by 202 publications

(133 citation statements)

References 15 publications

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“…For instance, a study carried out by Callaghan and McGill [15] evaluating dynamic posture strategies in office work showed that people who continuously vary their body posture appear to relieve their passive tissues. Moreover, Vergara and Page [14] concluded that frequent change of body posture indicated discomfort. Fujimaki and Noro [7] also observed that body movements start to occur when discomfort reaches a certain level during 60 minutes of sitting.…”

Section: Observationsmentioning

confidence: 99%

“…Although several studies examined the relation between bodily movements and discomfort, there seems to be no consensus on the frequency and range of movement that should be offered [14,15]. For instance, Vergara and Page [14] defined macro-movement as a distinctive change of posture every 5 to 6 minutes.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Vergara and Page [14] defined macro-movement as a distinctive change of posture every 5 to 6 minutes. On the other hand, Callaghan and McGill [15] described that dynamic sitting consists of at least 3 posture variations in 2 hours.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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: Observationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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show abstract

“…48 This becomes increasingly relevant as more of the population acquires a sedentary lifestyle. Despite considerable research into optimising ergonomic sitting practices, 22,23,[40][41][42][43][44][45][46] the incidence of LBP remains high. 13 The proposed negative effects of prolonged sitting include compromised disc nutrition and static loading of spinal structures secondary to a lack of spinal movement.…”

mentioning

confidence: 99%

Lumbopelvic Kinematics and Trunk Muscle Activity During Sitting on Stable and Unstable Surfaces

O’Sullivan¹,

Dankaerts²,

Burnett³

et al. 2006

J Orthop Sports Phys Ther

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Study Design: A single-group comparative study. Objectives: To compare lumbopelvic kinematics and muscle activation patterns while sitting on stable and unstable surfaces. Background: Unstable surfaces are commonly used during the rehabilitation of certain low back pain disorders. The benefits postulated are increased muscle activity and facilitation of sustainable midrange positions via neuromuscular control. The use of unstable sitting devices in the workplace is controversial, as the postulated increase in muscle activity is thought to lead to a muscle fatigue/pain response. However, little evidence exists for or against the ability of these devices to alleviate or prevent spinal pain. Methods and Measures:This study included 26 healthy adults (14 male, 12 female). Fastrak 3-dimensional motion analysis detected lumbar curvature, pelvic tilt, and postural sway during sitting on a stable and unstable surface over 5-minute periods. Surface electromyography was used to measure activity in the superficial lumbar multifidus, transverse fibers of internal oblique, and iliocostalis lumborum pars thoracis. Results: Spinal postures were similar for sitting on a stable and unstable surface. Significant increases in postural sway were detected (P = .013) in 3 dimensions of movement during sitting on an unstable surface. Gender differences were noted. No EMG amplitude or variance differences were detected between seating conditions. Conclusions: Preliminary data show that sitting on unstable surfaces induces greater spinal motion, but does not significantly alter the lumbosacral posture nor the amount of activity in the superficial trunk muscles under investigation.

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“…Vergara, and Page 39) suggested that large changes in sitting posture are indicative of discomfort while small movements are necessary to alleviate pain caused by static lumbar and pelvic postures. This may indicate that seating conditions that promote movement are more comfortable 19) .…”

Section: Discussionmentioning

confidence: 99%

Effects of the Height of Ball-Backrest on Head and Shoulder Posture and Trunk Muscle Activity in VDT Workers

Yoo

Cho

et al. 2008

Ind Health

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Relationship between comfort and back posture and mobility in sitting-posture

Cited by 202 publications

References 15 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

Lumbopelvic Kinematics and Trunk Muscle Activity During Sitting on Stable and Unstable Surfaces

Effects of the Height of Ball-Backrest on Head and Shoulder Posture and Trunk Muscle Activity in VDT Workers

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