A standing posture support device that reduces laparoscopic surgeons’ occupational lower limb stress

The chairless chair is a kind of ergonomical product which is actually a chair that is based on exoskeleton support. The primary work behavior of workers who have been listed as prolonged occupational standing reported that the worst health outcomes. A small study concluded that there stands a higher chance of significant and prolonged lower limb muscle fatigue while standing five hours or more than that a day. This might increase the risk for long-term back pain and musculoskeletal disorders. In mean time, the researchers found that people who primarily stand at work are several percentages more likely to develop heart disease than “predominantly sitting populations”. The traditional chair is inconvenient to carry to different working locations due to its large size, and its heavy weight (5 to 7 kg approximately) and rigid structure and thus, they are inappropriate for workplaces where enough space is not available. The ultimate aim of this project is to develop a lower body cost efficient external skeletal structure that supports sitting, walking and partial standing posture. Flexible wearable chair may have gross weight of 3 kg as it utilizes lightweight members. It is to be fabricated in such a way that the workers can be cozy during their tasks and can alter their sitting postures at any angles between ninety degree to hundred and sixty degree. A person can utilize this exoskeleton like an extra pair of legs to give him or herself as support to sit without a chair or to adopt a more comfortable position for different tasks. Workers can walk about as typical, but if they want to sit or lean, adjust and fix the supporting structure in the required position. Then the weight is supported on the ground by means of their adjustable structures. It aids to save space in the working place as the workers wear it on their legs. It reduces bad health impacts that occurs due to excessive standing.

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Response of tonic lower limb FE model in various real life car-pedestrian impact configurations: a parametric study for standing posture

International Journal of Vehicle Safety ◽

10.1504/ijvs.2009.026971 ◽

2009 ◽

Vol 4 (1) ◽

pp. 14 ◽

Cited By ~ 2

Author(s):

Anurag Soni ◽

Anoop Chawla ◽

Sudipto Mukherjee ◽

Rajesh Malhotra

Keyword(s):

Lower Limb ◽

Parametric Study ◽

Real Life ◽

Fe Model ◽

Standing Posture ◽

Pedestrian Impact

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Effect of joint contracture of lower limb on joint angle and joint moment during standing posture: A mechanics simulation study

Japanese Journal of Physical Fitness and Sports Medicine ◽

10.7600/jspfsm.65.511 ◽

2016 ◽

Vol 65 (6) ◽

pp. 511-520

Author(s):

Takuma Inai ◽

Mutsuaki Edama ◽

Tomoya Takabayashi ◽

Masayoshi Kubo

Keyword(s):

Simulation Study ◽

Lower Limb ◽

Joint Angle ◽

Joint Moment ◽

Joint Contracture ◽

Standing Posture

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Investigation of Lower Limb Fatigue on Two Standing Posture

Jurnal Optimasi Sistem Industri ◽

10.25077/josi.v11.n1.p208-213.2012 ◽

2016 ◽

Vol 11 (1) ◽

pp. 208 ◽

Cited By ~ 1

Author(s):

Sari Julia Sartika ◽

Siti Zawiah Dawal

Keyword(s):

Low Back Pain ◽

Back Pain ◽

Lower Limb ◽

Muscle Activity ◽

Surface Emg ◽

Sorting Task ◽

Low Back ◽

Standing Posture ◽

Prolonged Standing ◽

Lower Limb Muscles

The purpose of this study was to investigate the different effect from the two standing posture on lower limb fatigue and discomfort. Sixteen subjects (eight females and eight males), aged between 23-29 years, participated in the experiment. They performed a sorting task in front of a grading table by picking and placing objects for 90 minutes in two posture (1) standing and (2) standing using a footrest. Muscle activity was recorded with surface EMG through disposable electrodes. The result shows that standing for ninety minutes developed fatigue in lower limb muscles and back muscles that lead to low back pain. Standing using a footrest result proper posture for prolonged standing period and reduce force at the back. It also results less fatigue and reduce the %MVC of EMG. So, it is recommended to attach a footrest in standing workstation to reduce the fatigue and discomfort.Keywords:fatigue, posture, standing,lower limb, EMG

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