Investigate and Estimate Attendant's Propelling Work Against Wheelchair's Load

Uchiyama, Hironobu; Suzuki, T.; Kurata, Junichi; Murakami, Yoshihiro

doi:10.1299/kikaic.72.842

Cited by 2 publications

(4 citation statements)

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“…Then 30 -50 seconds passed, the trajectory had limit cycles at steady state. The time behaviors of the F(t) and V(t) at steady state, oscillated by two leg walking (8) , but plotted circles on Fig. 4(a) show well averaged…”

Section: Autonomous Propelling Activitymentioning

confidence: 92%

“…For the design of the system, it is important to investigate how much workers naturally exert pushing force with walking in daily life. In the light propelling activity, we studied attendant's behaviors to propel a wheelchair in autonomous condition (8) . The light propelling activity is done without purposed wheelchair speed in workers.…”

Section: Journal Of Biomechanical Science and Engineeringmentioning

confidence: 99%

“…The time behaviors of EHR became steady after 10min. passed from beginning in each trial (8) . The EHR increased slightly from around 20% against the increase of the R, which caused the decrease of the walking speed.…”

Section: Journal Of Biomechanicalmentioning

confidence: 99%

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Investigation of the Light Load in Propelling a Handcart on Various Road Resistances

Suzuki

Uchiyama

2009

JBSE

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Propelling handcart tasks, such as pushing a wheelchair with an occupant or a handcart with heavy objects are well seen and met in our daily life and occupational works. Office workers and attendants in propelling wheelchairs are physically weaker than workers in industries. Also, aged persons propelling wheelchairs for aged spouses increase in recent aged society in advanced industrialized countries around the world. In this paper, we proposed the linear signal model of worker-cart system based on steady propelling state, and produced the experimental device for investigating the propelling activity in daily life. We analyzed the mechanism of the steady propelling behavior at steady state with the model and device. From experimental results with three subjects in his 20s, we found followings; The proposed model is useful in walking speed 1km/h above. Maximum estimated forces by single leg is around 50N against maximum road resistance, and the force decreases proportionally in walking speed 1km/h above against the decrease of the resistance. Also, autonomous natural pushing force in maximum mechanical power 25-40W, are carried out under exercising heart ratio (EHR) 30%, which shows light load activity to be able to continue over 20min.

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Section: Autonomous Propelling Activitymentioning

confidence: 92%

Section: Journal Of Biomechanical Science and Engineeringmentioning

confidence: 99%

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Investigation of the Light Load in Propelling a Handcart on Various Road Resistances

Suzuki

Uchiyama

2009

JBSE

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“…In Europe, Van Der Woude et al evaluated the optimum grip height while forces for pushing an assistance wheelchair are measured by incorporating sensors to handle some of load of the assistance wheelchair (7) . Furthermore, Uchiyama et al reported that characteristics when pushing force depending on a load and walking speed are regulated autonomously when using an electrically driven walking-action test device while a helper walks with pushing operations (8) . Consequently, sensory evaluation such as ease of pushing the assistant wheelchair and evaluation of burden exerted to the upper limb of the helper have been conducted.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Dynamics of Pushing a Wheelchair Up or Down a Slope

Miyawaki

Sasaki

Iwami

et al. 2012

JSDD

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Japan's progressing aging society increasingly needs evaluation of equipment used for human assistance. Earlier studies have evaluated the use of wheelchairs. However, the manner in which the equipment moderates the generated consumption energy of helpers has not been described sufficiently. This study performs mechanical evaluation of a helper's walking using a wheelchair on a slope. We use the Musculoskeletal Model to estimate the joint moment and energy consumption. Results obtained with 14 volunteers who assisted these wheelchair experiments were considered for cases in which the energy consumption of the wheelchair increased by 13% from that of a normal gait when moving up an incline. This evaluation method is useful for developing practical assistance equipment.

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Investigate and Estimate Attendant's Propelling Work Against Wheelchair's Load

Cited by 2 publications

References 0 publications

Investigation of the Light Load in Propelling a Handcart on Various Road Resistances

Investigation of the Light Load in Propelling a Handcart on Various Road Resistances

Evaluation of Dynamics of Pushing a Wheelchair Up or Down a Slope

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