The Experts below are selected from a list of 7692 Experts worldwide ranked by ideXlab platform
Junji Katsuhira - One of the best experts on this subject based on the ideXlab platform.
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immediate synergistic effect of a trunk orthosis with joints providing Resistive Force and an ankle foot orthosis on hemiplegic gait
Clinical Interventions in Aging, 2018Co-Authors: Junji Katsuhira, Nodoka Machida, Mizuho Ohta, Yuji Ohmura, Arito Yozu, Sumiko Yamamoto, Setsuro Ibayashi, Masako Fuchi, Ko MatsudairaAbstract:Purpose: The synergistic effects of a trunk orthosis and an ankle-foot orthosis (AFO) in stroke patients with a hemiplegic gait are unclear. We previously developed a trunk orthosis with joints providing Resistive Force (TORF) to modify malalignment of the trunk and pelvis and confirmed its positive effects in stroke patients during level walking without an AFO. The aim of the present study was to determine if this trunk orthosis and an AFO have synergistic effects during level walking in community-dwelling patients with chronic stroke. Methods: Twenty-eight community-dwelling stroke patients performed level walking at a self-selected speed with an AFO and again while wearing a TORF (TORF group) or a corset (control group). Spatiotemporal, kinematic, and kinetic data were recorded using a three-dimensional motion analysis system. Results: When compared with the control group, the TORF group showed significant increases in walking speed, number of steps on the paretic leg per minute, and peak ankle plantar flexion moment during the single stance phase. Conclusion: The TORF increased the ankle joint plantar flexion moment at the end of the single stance phase during level walking in stroke patients, leading to an increase in their gait speed because of the modified trunk and pelvis alignment.
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efficacy of a trunk orthosis with joints providing Resistive Force on low back load during level walking in elderly persons
Clinical Interventions in Aging, 2016Co-Authors: Junji Katsuhira, Ko Matsudaira, Tadashi Yasui, Shinno Iijima, Akihiro Ito, Hiroyuki Oka, Arito YozuAbstract:PURPOSE The effects of lumbosacral and spinal orthoses on low back pain and gait are not exactly clear. We previously developed a trunk orthosis with joints providing Resistive Force on low back load to decrease such load, and confirmed its positive effects during level walking in healthy young adults. Therefore, we aimed to determine the efficacy of this trunk orthosis during level walking in healthy elderly subjects. METHODS Fifteen community-dwelling elderly subjects performed level walking at a self-selected speed without an orthosis, with our orthosis, and with a lumbosacral orthosis. Kinematic and kinetic data were recorded using a three-dimensional motion analysis system, and erector spinae activity was recorded by electromyography. RESULTS When comparing the three conditions, our orthosis showed the following effects: it decreased the peak extension moment, increased the peak flexion moment, decreased the lateral bending angle, increased the peak thoracic extension angle, and had significantly lower erector spinae activity and significantly larger peak pelvic forward tilt angles. CONCLUSION Our orthosis with joints providing Resistive Force decreased low back load and modified trunk and pelvis alignments during level walking in healthy elderly people.
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efficacy of a newly designed trunk orthosis with joints providing Resistive Force in adults with post stroke hemiparesis
Prosthetics and Orthotics International, 2016Co-Authors: Junji Katsuhira, Tadashi Yasui, Nodoka Miura, Takane Mitomi, Sumiko YamamotoAbstract:Background:Few studies have examined the efficacy of trunk orthoses that support the upper trunk and a paretic limb in stroke patients. To improve stability and alignment of the trunk and pelvis in hemiparetic patients, we developed a newly designed trunk orthosis that provides Resistive Force through spring joints.Objectives:This study aimed to determine the newly designed trunk orthosis’s biomechanical effects during level walking.Study design:Before-after trials must be better.Methods:Measurements were taken for nine chronic-phase (>2 years post-onset) stroke patients using a three-dimensional motion capture system and Force plates under three experimental conditions: self-selected gait speed without the newly designed trunk orthosis, with the newly designed trunk orthosis, and after newly designed trunk orthosis removal. We analyzed and compared spatiotemporal and kinetic parameters of the paretic and non-paretic limbs and kinematic parameters of the trunk and bilateral limbs.Results:Several pre-swing...
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efficacy of a trunk orthosis with joints providing Resistive Force on low back load in elderly persons during static standing
Clinical Interventions in Aging, 2015Co-Authors: Junji Katsuhira, Ko Matsudaira, Tadashi Yasui, Shinno Iijima, Akihiro ItoAbstract:Purpose Postural alignment of elderly people becomes poor due to aging, possibly leading to low-back pain and spinal deformity. Although there are several interventions for treating these conditions, no previous study has reported the effectiveness of a spinal orthosis or lumbosacral orthosis (LSO) in healthy elderly people without specific spinal deformity. We therefore developed a trunk orthosis to decrease low-back muscle activity while training good postural alignment through Resistive Force provided by joints with springs (here, called the ORF, which stands for orthosis with joints providing Resistive Force) as a preventive method against abnormal posture and low-back pain in healthy elderly persons.
Ko Matsudaira - One of the best experts on this subject based on the ideXlab platform.
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immediate synergistic effect of a trunk orthosis with joints providing Resistive Force and an ankle foot orthosis on hemiplegic gait
Clinical Interventions in Aging, 2018Co-Authors: Junji Katsuhira, Nodoka Machida, Mizuho Ohta, Yuji Ohmura, Arito Yozu, Sumiko Yamamoto, Setsuro Ibayashi, Masako Fuchi, Ko MatsudairaAbstract:Purpose: The synergistic effects of a trunk orthosis and an ankle-foot orthosis (AFO) in stroke patients with a hemiplegic gait are unclear. We previously developed a trunk orthosis with joints providing Resistive Force (TORF) to modify malalignment of the trunk and pelvis and confirmed its positive effects in stroke patients during level walking without an AFO. The aim of the present study was to determine if this trunk orthosis and an AFO have synergistic effects during level walking in community-dwelling patients with chronic stroke. Methods: Twenty-eight community-dwelling stroke patients performed level walking at a self-selected speed with an AFO and again while wearing a TORF (TORF group) or a corset (control group). Spatiotemporal, kinematic, and kinetic data were recorded using a three-dimensional motion analysis system. Results: When compared with the control group, the TORF group showed significant increases in walking speed, number of steps on the paretic leg per minute, and peak ankle plantar flexion moment during the single stance phase. Conclusion: The TORF increased the ankle joint plantar flexion moment at the end of the single stance phase during level walking in stroke patients, leading to an increase in their gait speed because of the modified trunk and pelvis alignment.
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efficacy of a trunk orthosis with joints providing Resistive Force on low back load during level walking in elderly persons
Clinical Interventions in Aging, 2016Co-Authors: Junji Katsuhira, Ko Matsudaira, Tadashi Yasui, Shinno Iijima, Akihiro Ito, Hiroyuki Oka, Arito YozuAbstract:PURPOSE The effects of lumbosacral and spinal orthoses on low back pain and gait are not exactly clear. We previously developed a trunk orthosis with joints providing Resistive Force on low back load to decrease such load, and confirmed its positive effects during level walking in healthy young adults. Therefore, we aimed to determine the efficacy of this trunk orthosis during level walking in healthy elderly subjects. METHODS Fifteen community-dwelling elderly subjects performed level walking at a self-selected speed without an orthosis, with our orthosis, and with a lumbosacral orthosis. Kinematic and kinetic data were recorded using a three-dimensional motion analysis system, and erector spinae activity was recorded by electromyography. RESULTS When comparing the three conditions, our orthosis showed the following effects: it decreased the peak extension moment, increased the peak flexion moment, decreased the lateral bending angle, increased the peak thoracic extension angle, and had significantly lower erector spinae activity and significantly larger peak pelvic forward tilt angles. CONCLUSION Our orthosis with joints providing Resistive Force decreased low back load and modified trunk and pelvis alignments during level walking in healthy elderly people.
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efficacy of a trunk orthosis with joints providing Resistive Force on low back load in elderly persons during static standing
Clinical Interventions in Aging, 2015Co-Authors: Junji Katsuhira, Ko Matsudaira, Tadashi Yasui, Shinno Iijima, Akihiro ItoAbstract:Purpose Postural alignment of elderly people becomes poor due to aging, possibly leading to low-back pain and spinal deformity. Although there are several interventions for treating these conditions, no previous study has reported the effectiveness of a spinal orthosis or lumbosacral orthosis (LSO) in healthy elderly people without specific spinal deformity. We therefore developed a trunk orthosis to decrease low-back muscle activity while training good postural alignment through Resistive Force provided by joints with springs (here, called the ORF, which stands for orthosis with joints providing Resistive Force) as a preventive method against abnormal posture and low-back pain in healthy elderly persons.
Aiying Wang - One of the best experts on this subject based on the ideXlab platform.
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mems piezo Resistive Force sensor based on dc sputtering deposited amorphous carbon films
Sensors and Actuators A-physical, 2020Co-Authors: Xiaoshan Tong, Qi Zhang, Peng Guo, Yulong Zhao, R Chen, Aiying WangAbstract:Abstract The rapid growing demand of micro-electromechanical system (MEMS) sensors brings an urgent need for high performance and low cost sensitive materials. In this work, amorphous carbon (a-C) film was in-situ deposited on silicon substrate as strain sensitive component using economical direct current (DC) magnetron sputtering process and the a-C sensor was systematically designed, fabricated and tested. By adjusting the negative bias voltage in the range of 0–400 V, the gauge factor (GF) of the a-C film was adjusted within the range of 3.3–6.9. What’s more, the film’s sp2 cluster size played an important role in their piezo-Resistive performance and conductivity, which illustrated the thick-film resistors (TFRs) theory. Additionally, CAFM results also supported the applying of TFRs theory in this work. Benefiting from the outstanding performance of a-C film, the MEMS Force sensor, consisted a Wheatstone full-bridge with four a-C piezo-resistors, had a sensitivity of 9.8 μV/V/mN and non-linearity about 2.0% FS in the testing range of 0–210 mN, while it also showed a good repeatability. These investigations provided deeper insight into the piezo-Resistive behavior of a-C film and contributed to the development of high performance and more economical sensitive materials for MEMS sensors.
Akihiro Ito - One of the best experts on this subject based on the ideXlab platform.
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efficacy of a trunk orthosis with joints providing Resistive Force on low back load during level walking in elderly persons
Clinical Interventions in Aging, 2016Co-Authors: Junji Katsuhira, Ko Matsudaira, Tadashi Yasui, Shinno Iijima, Akihiro Ito, Hiroyuki Oka, Arito YozuAbstract:PURPOSE The effects of lumbosacral and spinal orthoses on low back pain and gait are not exactly clear. We previously developed a trunk orthosis with joints providing Resistive Force on low back load to decrease such load, and confirmed its positive effects during level walking in healthy young adults. Therefore, we aimed to determine the efficacy of this trunk orthosis during level walking in healthy elderly subjects. METHODS Fifteen community-dwelling elderly subjects performed level walking at a self-selected speed without an orthosis, with our orthosis, and with a lumbosacral orthosis. Kinematic and kinetic data were recorded using a three-dimensional motion analysis system, and erector spinae activity was recorded by electromyography. RESULTS When comparing the three conditions, our orthosis showed the following effects: it decreased the peak extension moment, increased the peak flexion moment, decreased the lateral bending angle, increased the peak thoracic extension angle, and had significantly lower erector spinae activity and significantly larger peak pelvic forward tilt angles. CONCLUSION Our orthosis with joints providing Resistive Force decreased low back load and modified trunk and pelvis alignments during level walking in healthy elderly people.
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efficacy of a trunk orthosis with joints providing Resistive Force on low back load in elderly persons during static standing
Clinical Interventions in Aging, 2015Co-Authors: Junji Katsuhira, Ko Matsudaira, Tadashi Yasui, Shinno Iijima, Akihiro ItoAbstract:Purpose Postural alignment of elderly people becomes poor due to aging, possibly leading to low-back pain and spinal deformity. Although there are several interventions for treating these conditions, no previous study has reported the effectiveness of a spinal orthosis or lumbosacral orthosis (LSO) in healthy elderly people without specific spinal deformity. We therefore developed a trunk orthosis to decrease low-back muscle activity while training good postural alignment through Resistive Force provided by joints with springs (here, called the ORF, which stands for orthosis with joints providing Resistive Force) as a preventive method against abnormal posture and low-back pain in healthy elderly persons.
Arito Yozu - One of the best experts on this subject based on the ideXlab platform.
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immediate synergistic effect of a trunk orthosis with joints providing Resistive Force and an ankle foot orthosis on hemiplegic gait
Clinical Interventions in Aging, 2018Co-Authors: Junji Katsuhira, Nodoka Machida, Mizuho Ohta, Yuji Ohmura, Arito Yozu, Sumiko Yamamoto, Setsuro Ibayashi, Masako Fuchi, Ko MatsudairaAbstract:Purpose: The synergistic effects of a trunk orthosis and an ankle-foot orthosis (AFO) in stroke patients with a hemiplegic gait are unclear. We previously developed a trunk orthosis with joints providing Resistive Force (TORF) to modify malalignment of the trunk and pelvis and confirmed its positive effects in stroke patients during level walking without an AFO. The aim of the present study was to determine if this trunk orthosis and an AFO have synergistic effects during level walking in community-dwelling patients with chronic stroke. Methods: Twenty-eight community-dwelling stroke patients performed level walking at a self-selected speed with an AFO and again while wearing a TORF (TORF group) or a corset (control group). Spatiotemporal, kinematic, and kinetic data were recorded using a three-dimensional motion analysis system. Results: When compared with the control group, the TORF group showed significant increases in walking speed, number of steps on the paretic leg per minute, and peak ankle plantar flexion moment during the single stance phase. Conclusion: The TORF increased the ankle joint plantar flexion moment at the end of the single stance phase during level walking in stroke patients, leading to an increase in their gait speed because of the modified trunk and pelvis alignment.
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efficacy of a trunk orthosis with joints providing Resistive Force on low back load during level walking in elderly persons
Clinical Interventions in Aging, 2016Co-Authors: Junji Katsuhira, Ko Matsudaira, Tadashi Yasui, Shinno Iijima, Akihiro Ito, Hiroyuki Oka, Arito YozuAbstract:PURPOSE The effects of lumbosacral and spinal orthoses on low back pain and gait are not exactly clear. We previously developed a trunk orthosis with joints providing Resistive Force on low back load to decrease such load, and confirmed its positive effects during level walking in healthy young adults. Therefore, we aimed to determine the efficacy of this trunk orthosis during level walking in healthy elderly subjects. METHODS Fifteen community-dwelling elderly subjects performed level walking at a self-selected speed without an orthosis, with our orthosis, and with a lumbosacral orthosis. Kinematic and kinetic data were recorded using a three-dimensional motion analysis system, and erector spinae activity was recorded by electromyography. RESULTS When comparing the three conditions, our orthosis showed the following effects: it decreased the peak extension moment, increased the peak flexion moment, decreased the lateral bending angle, increased the peak thoracic extension angle, and had significantly lower erector spinae activity and significantly larger peak pelvic forward tilt angles. CONCLUSION Our orthosis with joints providing Resistive Force decreased low back load and modified trunk and pelvis alignments during level walking in healthy elderly people.
