| 種類 |
発行又は発表の年月 |
著書、学術論文、作品等の名称 |
発行又は発表雑誌等又は発表学会等の名称 |
該当頁 |
| 概要 |
| 著書（共著） | 2023年03月 | ”使いやすさ”の定量評価と製品設計への落とし込み方 | 株式会社技術情報協会 | pp.616-630 |
| 階段用手すり形状の違いによる使いやすさ分析 |
| 学術論文（共著） | 2013年9月 | 手すりを用いたトイレでの立ち上がり動作における負担の定量的評価方法の検討 | 『人間工学会誌』 Vol.49, No.5 | p.219-228 |
| The demand for handrails that can be easily installed as barrier-free equipment has increased with development of a super-aging society. In this paper, we report a method for quantitative evaluation of the difficulty of standing up from a toilet with a handrail grip. Kinetic loads（force, torque, and grip strength） acting on the handrail during the action of standing up, the center of pressure（COP）of the floor reaction force, and the results of sensory evaluation in this experiment are used as evaluation items. For each participant, the distance from the heel to the toilet seat increases when a handrail is used, and an increasing trend is observed in other parameters as well. In particular, a significant difference in tensile force is observed toward the front of the handrail. In contrast, no significant difference in grip strength is observed in either case. These results suggest the superiority of quantitative evaluation based on the maximum value in data for the tensile force applied to the front of the handrail and evaluation based on impulse using the same data. |
| 学術論文（共著） | 2016年6月 | Finite Element Analysis of Trimmed Plastic Ankle-Foot Orthoses | "Advanced Experimental Mechanics", Vol.1 | p.269-276 |
| The purpose of this study was to quantitatively analyze the stress and deformation that occur in plastic ankle-foot orthoses (PAFOs) during walking after it is trimmed. First, PAFOs with incorporated sensors were individually prepared for 2 patients with hemiplegia. Mechanical data were then obtained while individuals wore the PAFOs during walking. Here we report the results of mechanical data and finite element analysis of trimmed plastic ankle-foot orthoses worn by two patients with left-hemiplegia. The results could provide prosthetists with some suggestions for forming orthoses. |
| 学術論文（共著） | 2016年6月 | プラスチック短下肢装具歩行立脚相における荷重ベクトルの状態と装具底背屈角度との関係 | 『実験力学』 Vol.16, No.2 | p.147-153 |
| Plastic ankle-foot orthoses (PAFOs) are often used as assistive devices for patients with hemiplegia. In this study, force exerted on PAFOs during walking was measured using a sensor installed at the top of the calf region on the PAFO, where the structure of the PAFO exerts minimal influence on measurements, and the data were analyzed. First, PAFOs with incorporated sensors were individually prepared for 3 healthy individuals and for 3 patients with hemiplegia. Mechanical data were then obtained while individuals wore the PAFOs during level-ground walking. We found that at the early stance phase, force vectors apply at a slightly lower region of the prosthetic rear wall, the level of which is the same as the upper belt, and at the late stance phase, they usually apply at the upper belt region. We also found that the waveform of posterior force applied by the PAFOs coincide with that of the bending angle of the PAFOs. From these findings, we found that the approximate posterior direction force applied by the PAFOs, which usually must be measured using costly sensors and modified PAFOs, can be easily estimated by measuring and calculating from PAFO bending angle. |
| 学術論文（共著） | 2016年9月 | プラスチック短下肢装具歩行の分析 ―健常者と装具使用者の比較― | 『臨床バイオメカニクス』 Vol.37 | p.365-372 |
| Plastic ankle-foot orthoses (PAFOs) are often used as support equipment for patients with hemiplegia. In this study, a sensor was installed on PAFOs at the top of the calf region, where is a negligible effect on the structure of the PAFO, and the load exerted on the PAFO during ambulation was measured and the data were analyzed. First, PAFOs incorporating the sensors were individually prepared for 6 healty individuals and 6 patients with hemiplegia. Mechanical data were then obtained while wearing the PAFOs during level-ground walking. Analysis of acquired anterior-posterior load data was performed, and they showed a strong relationship with deformation in the plantar/dorsiflexion direction of the PAFOs. In particular, features were seen primarily in the load exerted in the anterior-posterior direction of the PAFOs, and, therefore, these data were compared between the two groups. The load data in the anterior-posterior direction for most subjects showed a load in the posterior direction at the beginning of the standing phase and a load in the anterior direction at the end of the standing phase. We also verified the presence of significant differences between the data from healthy individuals and those with hemiplegia. In addition, we found that the difference between the maximum and minimum values of the anterior-posterior load is more strongly correlated with steps than with cadences. |
| 学術論文（共著） | 2017年5月 | Analysis of Kinetic of Load of plastic Ankle Foot orthosis during Swing Phase | "Advanced Experimental Mechanics", Vol.2 | p.147-152 |
| We developed a mechanical measurement system, which we then used in this PAFO gait experiment. We report that differences between hemiplegic patients and healthy subjects in the mechanical load acting on gait using a PAFO in swing phase. Moreover, there is a large difference between volunteers and patients in initial swing phase and especially in decreasing belt reaction force toward the end of terminal swing phase. We consider that this difference is relevant to control of voluntary movement. In conclusion, a large deformation can be observed between volunteers and patients by analyzing the belt reaction force and load waveform. |
| 学術論文（共著） | 2018年4月 | Measurement System for Kinetic Loads Acting on an Orthosis during Swing Phase | "Advanced Experimental Mechanics", Vol.3 | Vol.3，pp.192-196 |
| We developed a measurement system with force-torque sensors that is able to analyze mechanical loads acting on a plastic ankle foot orthosis (PAFO) from the sole of the foot during swing phase of orthotic gait. Using this system, we compared kinetic loads applied to the orthosis during walking between hemiplegic patients and healthy volunteers. The results show that the system can be used to measure kinetic loads and revealed differences in the range of kinetic loads acting on the orthosis from the sole of the foot between the volunteer group and the patient group. The range of heel kinetic load was 11.8 times larger in the volunteer group than in the hemiplegic patient group, and the range of toe kinetic load was 2.6 times larger. In conclusion, we developed a system for measuring kinetic loads between the sole of the foot and an orthosis during swing phase. Also, some differences in kinetic loads were found between healthy volunteers and hemiplegic patients. |
| 学術論文（共著） | 2019年7月 | 歩行中のプラスチック短下肢装具に作用する荷重と装具変形の分析－自動装具設計製作システムの開発を目指して－ | 『実験力学』2019 年 19 巻 2 号 | p.99-107 |
| In this study, the load on a shoehorn brace-type plastic ankle-foot orthosis during walking was measured in 9 hemiplegic subjects and 6 non-hemiplegic subjects. A 6-axis force sensor was used to measure the load on the orthosis and a flexible goniometer was used to examine its deformation. Then, range and magnitude of moments and forces acting on the orthosis were calculated along each axis. We found a significant difference in the waveform for load in the longitudinal direction, which plays an important role in walking, between the hemiplegic and non-hemiplegic subjects, as well as significant inter-individual variation in the waveforms obtained from the hemiplegic subjects. These findings suggest that the thickness and shape of the brace should be taken into account when designing an orthosis to meet the functional needs of a hemiplegic patient. The waveform associated with deformation of the orthosis was confirmed to be similar to that of the waveform of the longitudinal load. We believe that the results of our study provide the basic data necessary for construction of a semiautomatic design and fabrication system for orthoses suitable for hemiplegic patients. |
| 学術論文（共著） | 2019年8月 | Relation between Kinetic Load and Knee/Ankle Joint Angle during the Stance Phase of walking with a Plastic Ankle Foot Orthosis | Advanced Experimental Mechanics, Vol.4 (2019) | pp.173-178 |
| Prescription of a plastic ankle foot orthosis (PAFO) is currently based on the experience and intuition of the doctor. A systematic approach is necessary to establish prescription standards. In this study, we analyzed the mechanical load acting on PAFOs during the stance phase of walking using our previously developed measurement system. In addition, these values were compared between 5 healthy volunteers and 7 patients with hemiplegia. Large differences were observed in the knee joint angle from 70% to 100% gait cycle, which increased steeply to about 40° in the healthy volunteers but increased gradually to about 20° in the hemiplegic patients. Also, the maximum angle of the knee joint in the healthy volunteers was 1.26 times greater than that in the patients, while the minimum angle of the knee joint was 0.84 times smaller. The amount of deformation of the PAFO was about 1.87 times greater at the knee joint and about 1.31 times greater at the ankle joint in the healthy volunteers than in the hemiplegic patients. These results revealed differences in the mechanical load between healthy volunteers and hemiplegic patients that affected the PAFO in terms of the ankle joint and knee joint during stance phase. |
| 学術論文（共著） | 2020年3月 | 室内防災に寄与するタケ中空構造シェルフの試作 ～人にやさしい家具（２）～
| デザイン学研究作品集，2019, 25 巻 1 号 | pp.8-13 |
日本は度々大地震に見舞われ、家具の転倒等により多くの被害が発生している。室内防災に有効な対策としては家具固定が推奨されているが、現段階において固定率が高いとは言い難い。本研究では、薄く、軽量な竹集挽板を取材とすることで、軽量で点灯しにくく、転倒の際の人的ダメージを軽減するという要件を満たし、室内防災に寄与するシェルフ型収納家具の施策を行った。設計に当たり、シェルフ部材の性質に合わせて各種タケ材を適材適所に使い分け、中空構造を採用し、部材同士の接合では固定部分とフリー部分を設けたその結果、重量測定、振動試験、耐荷重試験、重心位置計測などにより、軽量で重心が下がり転倒しにくく防振効果を発揮することが明らかとなり、地震の揺れに対する転倒リスクを軽減する収納家具設計の可能性が示唆された。
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| 学術論文（共著） | 2021年08月 | A Measurement System for Deformation and Torsion Angle in Plastic Ankle Foot Orthoses | "Advanced Experimental Mechanics", Vol.6 | p.53-58 |
| We developed a displacement and torsion measurement system comprising a linear sensor system that directly measures PAFO deformation with very high accuracy. This system enables highly accurate and direct measurement and is free from measurement errors caused by infrared reflection. Using this system, we report the relation between deformation and angle in walking tests. Seven healthy men participated in experiments using this system with stride lengths set to 300 mm and cadence to 80 step/min. As a result of the walking analysis revealed that the toe or heel part of the PAFO was constrained between the floor and the foot immediately after the initiation of stance phase, and terminal stance phase, and adduction torsion occurred because the load was generated to cause plantar flexion. After that, consequently, it can be seen that due to the load shift and the flexibility act of the PAFO, the adduction torsion is decreased. |
| 学術論文（共著） | 2022年03月 | 入院患児のためのVR ストレスコーピングツールの 開発
| デザイン学研究作品集27 巻 1 号 | 1_152-1_155 |
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| その他（共著） | 2019年11月 | AIを用いた義手把持形態の決定に関する研究 | 日本実験力学会 分科会合同ワークショップ 2019 | |
| Disabled individuals are increasing due to aging and diseases. The myoelectric prosthetic hand (artificial arm) is used in order to assist in daily motion or to improve appearance. However, it is hard to say that the artificial arm is able to grip an object in an optimal way. We suggest a new system using artificial intelligence (AI) such as a convolutional neural network (CNN) on the artificial arm. In this study, we developed the classification method of grip shape using CNN, and validate accuracy depending on the combination of the feature extraction process. The development environment used TensorFlow and Keras on CentOS 7.1 of virtual PC on Windows 10 platform. We used 629 object pictures. Training data are 90% and the other 10% are evaluation data. As a result, categorizing accuracy for test data is nearly 80% in most simply feature extraction process. |
| その他（共著） | 2019年11月 | Effects of Processing to Plastic Ankle Foot Orthosis (PAFO) on their Mechanical Strength | The 14th International Symposium on Advanced Science and Technology in Experimental Mechanics | A023 |
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| その他（共著） | 2019年11月 | Research on Deformation and Mechanical Load acting on Plastic Ankle Foot Orthosis | The 14th International Symposium on Advanced Science and Technology in Experimental Mechanics | A043 |
| We developed the PAFO deformation and its angle measurement system using inexpensive sensors. Here, we report on the relationship between deformation and its angle in the walking test using this system. One healthy subject (age: 29, body weight: 54.7, sex: male) participated in this study. PAFO were custom-made by a prosthetist. Using this system, we tried ten walking experiments in which the condition was set at stride length of 30 cm and cadence of 80 step/min. As a result, the deformation path was shaped like an ellipse during 1 gait cycle from the polar coordinate system. Moreover, these deformations were 20.7 mm on the lateral sensor, and medial was 17.9 mm. These are characteristics of PAFO deformation during walking. Since this study was conducted with one subject, further studies are necessary to obtain data with more subjects. |
| その他（共著） | 2019年11月 | ミニショベル操作レバーの形状設計による接触事故低減に関する研究 | 日本実験力学会 分科会合同ワークショップ 2019 | |
| Recently, the hydraulic mini excavator became the most popular product among heavy type machinery in Japan. However, many collisions and fatal accidents have happened during usage of these construction machines. One of the causes of this problem is contact accident when the mini excavator lever get caught in clothes. We studied three types of lever shapes: one is the same as the original lever (“Control”) and two are new shapes (lever A and lever B). Also, we reproduced the driving seat of the excavator, and a rising up experiment was conducted using this environment. Three healthy subjects participated in this study (age: 21.3±0.5, sex: male). As a result, lever A was about 1.55 times harder to get caught by clothes than lever B and about 1.82 times greater than Control. However, all models presented catching problems with sleeve in both left and right position. We consider that the left lever installation height is related to catching into the left hem of the work suit. In future studies, we expect to obtain more data from larger samples. |
| その他（共著） | 2020年08月 | タケ材と布材を用いたやわらかい家具 | 日本デザイン学会 2020年度春季研究発表大会 | A-02 |
| In response to repeated earthquake disasters,indoor disaster prevention efforts are needed. Therefore, in this report, we examined the structure of furniture that is less damaged when falling, and proposed storage furniture that combines a bamboo frame and basket-shaped storage parts. The double thin bamboo plywood frame reduces the impact of furniture when it falls. As a result of a vibration test on two prototype shelves, the attenuation of seismic intensity was confirmed for the cylindrical one. Then, the shelves showed an anti-vibration effect in a relatively low frequency range. In addition, it was experimentally confirmed that their center of gravity was low. |
| その他（共著） | 2020年08月 | 家具用樹脂シート材料および自然材料による生地の性質比較 | 日本デザイン学会 2020年度春季研究発表大会 | A-03 |
| In recent years, the "Plastic-free life" movement is increasingly getting attention due to the negative impact of plastic mass production and disposal on the natural environment and human health. In this study, we argue that the amount of plastic material can be reduced by replacing furniture plastic materials with natural materials. Firstly, we investigated the properties of natural sheet-formed materials such as softwood and bamboo. As a result, it was found that there are some natural materials that have excellent air permeability and tensile strength, as well as good texture. Finally, we found out possibilities for application of these properties to furniture design. |
| その他（共著） | 2020年08月 | 軽量ラミネーテッドウッドの作製と性質把握 | 日本デザイン学会 2020年度春季研究発表大会 | A-04 |
| Wooden furniture tends to be heavy due to the use of weighty wood materials. For this reason, there are several reports of injuries and deaths caused by furniture in recent large earthquakes. In this research, we developed lightweight wood materials for making furniture that reduces damage when falling.As a method to reduce material weight, laminated wood made of softwood was produced and subjected to bending strength and joint strength tests. As a result, it was found that laminated wood made by spruce laminated on Sugi or Hinoki showed high strength and had a lower relative density than existing laminated wood. The next step of this research will be to prototype furniture using the developed lightweight laminated wood, and conduct impact resistance tests. |
| その他（共著） | 2020年08月 | 階段用手すり形状と握りやすさに関する研究 | 日本デザイン学会 2020年度春季研究発表大会 | X-03 |
| Handrails are used in situations in which users need to displace their center of gravity in different directions, such as in toilets, stairs, and corridors. However, despite the use of handrails, accidents take place. We estimate that one of the factors involved in these accidents is the easiness to grip of the handrails. In this paper, we analyzed the relationship between handrail shapes for stairs and easiness to grip. Using 4 types of handrails, we conducted a gripping test for stair up/down walking action. As a result, significant differences were found in the handrails and palm contact area, as well as between handrail shape and easiness to grip. |
| その他（共著） | 2020年09月 | T字型杖の形状と持ちやすさに関する機能分析 | 日本機械学会2020年度年次大会 講演論文集 | J10310 |
| According to the Japan Statistics Bureau, 35 million people are over 65 years old (28.7% of the country population)(1). To assist ambulation, T-shaped walking sticks are frequently used, since they are easy to get in different kinds of stores. In this paper, the results of usability experiments using T-shaped sticks are reported. Thirteen healthy man (age 21.46±0.50 body weight 56.7±7.3 kg and height 170.7±6.0 cm) participated in this experiment, in which we analyzed relationships between easiness to grip and the stick grip shapes by using sensory evaluation and statistics. As a result of using multiple regression analysis, significant differences were shown for each stick Py length and shaft perimeter. In conclusion, three important points must be considered for designing a T-shaped walking stick: (1) The length of the grip must exceed the width of the hand when grasped, (2) design for a Py/Ny ratio of 1.88, and (3) the circumference of the shaft should not be increased. By applying these rules, we consider that it is possible to design a stick grip shape that is easy to grip. |
| その他（共著） | 2021年06月 | シート状自然材料による収納家具および壁面パネルの提案 | 第68回 JSSD 日本デザイン学会 春季研究発表大会 | 342-343 |
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| その他（共著） | 2021年06月 | タケを主材としたシェルフ型家具の転倒による衝撃比較 | 第68回 JSSD 日本デザイン学会 春季研究発表大会 | 340-341 |
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| その他（共著） | 2021年06月 | 家具転倒時の身体的衝撃を軽減する針葉樹混合積層材の開発 | 第68回 JSSD 日本デザイン学会 春季研究発表大会 | 296-297 |
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| その他（共著） | 2021年06月 | 持ちやすいスプーンの形状に関する研究 | 第68回 JSSD 日本デザイン学会 春季研究発表大会 | |
| Spoons are widely used in elderly meal care. However, during feeding assistance, accidents such as aspiration pneumonia may occur. In this study, we analyzed the relation between easiness to grip and easiness to feed the patient due to differences in spoon handle shape using 45 types of proposed spoons. As a result, it was suggested that, comparing with standard size, larger spoons that have a handle with dented surface are easier to use. On the other hand, spoons with dented surface or protrusions on the handle sides, resulted in lower easiness to feed. |
| その他（共著） | 2021年08月 | 表面筋電を用いた階段用手すりの形状と握りやすさの分析 | 日本実験力学会 2021年度年次講演会 | C207 |
| Due to the ease of installation of handrails, they are used in various places and many profile shapes have been developed. Various studies have been conducted on the shape and ease of gripping of handrails, and sensory evaluation is often used as the evaluation method. In this study, in order to establish a quantitative evaluation method for the ease of gripping stairs handrails, we performed sensory evaluation of the ease of gripping and analyzed participants' electromyogram when using five types of handrails with different cross-sectional shapes. In the experiment, seven healthy adults participated in the experiment, and they held the handrail and climbed the stairs three times. As a result of the experiment, it was suggested that the elliptical and octagonal handrails tended to be easier to grip in the sensory evaluation. On the other hand, analysis of electromyogram on biceps brachia and brachioradialis showed a difference of about 10% MVC, but it was not significant. |
| その他（共著） | 2021年09月 | 杖グリップ形状の違いによる握りやすさと上肢筋電の関係分析 | 日本機械学会 2021年度 年次大会 | J151-04 |
| The aim of this study is to increase the easiness to grip the T-shaped walking stick. For this purpose, we developed a measurement system for cane walk, and using this system we measured strain on the cane, and EMG during cane walk, as well as sensory evaluation after walking. In the experiment, seven healthy adults were set to walk using 5 types of grips during walking, with a stride of 30 cm and a tempo of 60 BPM. As a result of the experiment, the strain voltage acting on the grip of the horizontal oval-shape grip was significantly smaller than that of the round-shape and vertical oval-shape. In addition, the horizontal oval-shape had the best evaluation in the sensory evaluation, such as the SD method. This shape reduces the muscle burden of the gripping motion, and even if the wand is held for a long time, it does not get tired easily. We believe that we were able to obtain new knowledge that will lead to development of a walking stick that is less tiring. |
| その他（共著） | 2022年03月 | 家具の材質と構造の違いによる転倒時の衝撃比較 | 拓殖大学理学研究報告 Vol.19 | |
| In Japan, where earthquakes occur frequently, the concept of indoor disaster prevention is increasingly gaining importance. A way to achieve it is by developing of furniture that causes less injuries to human beings due to overturning during an earthquake. The authors have been evaluating prototypes of furniture that contributes to indoor disaster prevention by working on weight reduction and elasticity using bamboo materials, and lowering of the center of gravity by modifying material distribution. In this report, we conducted overturn experiments using prototyped furniture. As a result, from the changes in acceleration and waveform at the time of collision, it was confirmed that the difference in furniture structure, material, weight, and center of gravity influences the impact due to overturn. Specifically, weight reduction has a great effect on impact reduction, and bamboo’s elastic structure has the potential to reduce injury by absorbing impact and prevent rebound. Furthermore, it was suggested that a low center of gravity not only helps to prevent falls, but also contributes to reduce impact. |
| その他（共著） | 2022年03月 | 視覚的アプリ弱者のためのカスタマイズユーザインターフェースの提案～初期カスタマイズ機能を擁した証明書申請補助アプリでの検証～
| 拓殖大学理学研究報告 Vol.19 | |
| 本研究は、老眼や白内障を患った高齢者、又は色覚障害を有する人などの、スマートフォンのアプリケーションを使う上で視覚的に不便を感じる人を「視覚的アプリ弱者」と定義し、視覚的アプリ弱者でも見易いユーザインターフェース（以下、UIとする）の制作とその評価を目的とする。制作するUIは「初期カスタマイズ機能（以下、ICFとする）」と呼び、アプリの初回起動の際に、背景色、文字やボタンの大きさ、テーマカラーと強調色の組み合わせの順番でユーザが設定できる。実験では被験者が選んだ設定をアプリに適用させたうえで、使用してもらった。被験者は学生と高齢者を合わせた27名とし、学生には色弱模擬フィルタを装着させて疑似的に色覚障害を有する状態とした。色覚障害を有する状態で、ICF無しの試行よりもICF有りの試行の方が約21%短い時間で終わったことから、本研究で提案するICFが色覚障害を有する人に対して効果的であることが明らかになった。 |
| その他（共著） | 2022年06月 | タケ材を用いた編組構成による収納家具部品への応用可能性検討
| 日本デザイン学会 第69回春季研究発表大会概要集 | 360-361 |
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| その他（共著） | 2022年06月 | 杖歩行時のグリップに作用する荷重の分析 | 日本デザイン学会 第69回春季研究発表大会概要集 | 466-467 |
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| その他（共著） | 2022年08月 | ララコを用いた下肢運動効果の分析
| 日本実験力学会 2022 年度年次講演会 | 7-8 |
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| その他（共著） | 2022年09月 | ララコチェアを用いた姿勢改善効果の分析
| 日本機械学会 2022年度年次大会 | |
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| その他（共著） | 2023年6月 | タケ材を用いたフレーム構造と編組構成面材による収納家具の試作 | 日本デザイン学会 第70回春季研究発表大会概要集 | PA-22 |
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| その他（共著） | 2023年6月 | 弾性スギ圧縮木材と広葉樹材による側板を持つ転倒リスク軽減家具の開発
| 日本デザイン学会 第70回春季研究発表大会概要集 | PA-23 |
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| その他（共著） | 2023年6月 | 車いす用グリップ形状の違いによる身体的負荷分析 | 日本デザイン学会 第70回春季研究発表大会概要集 | PB-31 |
| The wheelchair is a welfare equipment used by individuals with disabilities in lower limbs, some of them requiring nursing care. There are not many studies investigating the differences between the surface shape of the handle grip and the physical loads in muscles of nursing personnel. In this study, we developed several grips that have different surface shapes, and analyzed the upper extremity myoelectricity during nursing care experiments. As a result, it was suggested that muscle electromyograms increased by approximately 40% in the common digital extensor muscle with different types of grip shapes. |
| その他（共著） | 2023年8月 | 弾性スギ圧縮木材による家具台輪部材および集成材の強度と振動特性
| 実験力学会 2023年度年次講演会 | 107-108 |
| Indoor damage caused by the earthquakes includes injuries produced by overturn of furniture. In this study, in order to reduce the risk of overturning of storage furniture, we produced storage furniture elements and glued laminated timber using compressed elastic sugi, and analyzed their strength and vibration characteristics. |
| その他（共著） | 2023年8月 | 階段上り動作における荷重計測可能な手すりの開発
| 日本実験力学会 2023 年度年次講演会 | 149-150 |
Handrails are used in variety of places such as toilet facilities, corridors, and stairs. In this study, in order to clarify the relationship between the mechanical load acting on the stair handrail and the ease of gripping, we developed a grip strength measurement system that can assess mechanical load in a stair climbing experiment. This experimental system consists of stairs and handrails that have the dimensions of a public facility. The handrails are made of SUS304 hollow steel pipes, and strain gauges are installed at two locations to measure grip strength. We performed an experiment asking 3 healthy adults to cooperate and conducted a stair-climbing task. As a result, it was clarified that the waveforms of the grip strength are wave-shaped, the grip average time was about 1.593 s, and the average grip strength acting on
the handrail was 56.09 N. |
| その他（共著） | 2023年9月 | ララコチェアを用いた運動の違いによる筋活動の分析 | 生活生命支援医療福祉工学系学会連合大会2023 （LIFE2023） | 2P1E6 |
| Deterioration of physical functions due to aging make elderly people prone to falls, resulting in injuries and sequels that require nursing care. By using the LaLaCo chair, elderly people can obtain favorable exercise effects and posture improvement relatively safely. In this study, we aim to clarify the exercise effect of the upper and lower limbs when using the LaLaCo chair in a posture different from sitting position. In the experiment, we asked 10 healthy subjects to perform 17 kinds of exercises targeting 8 muscles (biceps brachii, triceps brachii, electro spinae, trapezius, lateral vastus, gastrocnemius, rectus femoris, biceps femoris) and analyzed their electromyograms (EMGs). As a result, maximum voluntary contraction is over 108 times on the trapezius, and integrated EMGs are over 28 times. In the future, we plan to proceed with the study of muscles that were not analyzed. |
| その他 | 2022年06月 | フードロス削減を目指した食材の皮および殻の再利用検討
| 日本デザイン学会 第69回春季研究発表大会概要集 | 464-465 |
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| その他 | 2022年06月 | 弾性スギ圧縮木材と無垢材による材の強度および振動特性
| 日本デザイン学会 第69回春季研究発表大会概要集 | 362-363 |
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| その他 | 2022年06月 | 金具による家具固定を促す内装システム開発のための基礎的研究 | 日本デザイン学会 第69回春季研究発表大会概要集 | 358-359 |
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