Daisuke MAEDA's research while affiliated with Hokkaido Research Organization and other places
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Publications (14)
We previously reported the possibility of using the electrocardiogram variable to estimate blood calcium (Ca) concentration in dairy cows based on the strong positive correlation between the blood Ca concentration and the inverse of the corrected ST peak interval (STc⁻¹). To improve the accuracy of the estimation of blood Ca concentration, we inves...
Manual handling is one of the factors that increase the risk of upper limb disorders. Especially, most of workers in Japanese primary industries still do such operations in high risk. The purpose of this study is to reduce upper limb burden during manual handling in primary industries. We performed work observation and simulated work experiment wit...
For the evaluation of the usability and the physical burden of using products, average values of various biological information such as muscle activity measured by electromyogram (EMG) or energy metabolic rate are estimated. However, the force to be applied to a products and the posture are sometimes different because of difference of individuals a...
Many assistive technologies to reduce work load have been proposed. However, the effects of these technologies are not sufficiently verified from a long-term standpoint. In this study, we tried to evaluate the influence of long-term farm work using a passive power assist suit on the physical function by daily measurement of physical fitness.
We developed real-time living activity measurement system that monitored heart beat information and the bodily movement from a photoplethysmography and a acceleration sensor. The outside optical noise reduction technique was performed by the pulse luminescence of LED and high-pass filter proccess. Discerning the basic motion running, walking, and w...
Farmers and farm workers face some of the highest risks of work-related musculoskeletal injury caused by forward bending posture of the crop work or the heavy weight transportation. Therefore we performed biomechanical assessment for identifying risk factors involved in agricultural manual work. In this study, we developed the prototype personal we...
Measurements by surface electromyography (sEMG) are noninvasive and simple to apply to obtain signals of muscle action potentials. However, the sEMG potentials of muscles near the electrode are superimposed, called "crosstalk". This paper develops a method measuring individual muscle activity of forearm muscles using sEMG distribution and a conduct...
Citations
... In contrast, Itoh et al. (7,8) focused on the S and T waves, which show high peaks in cattle. The corrected ST interval (STc) was calculated by correcting the ST peak interval by the SS peak interval using Bazett's equation (9) (STc [seconds] = ST peak interval [seconds]/SS peak interval [seconds] 0.5 ). ...
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... The source position was reverse-estimated using the results of the regression analysis (14) (15) as follows: ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/279797075857418-1443720229400_Q64/Satoshi-Yoshinari.jpg)
![[object Object]](https://i1.rgstatic.net/ii/profile.image/276889831788546-1443027088166_Q64/Shigeru-Tadano.jpg)
... Wearable power assist devices are attracting a particularly great amount of attention in the today's society. Such wearable power assist devices include the following: active power assist devices with drive, such as HAL by Sankai [4], a power assisting suit by Yamamoto [5] and a muscle suit by Kobayashi [6]; passive power assist devices, such as a suit-type back muscle supporter by Yamazaki [7], a highly-elastic fabric spats by Okazaki [8], a simple supporter for reducing lower back exertion by Imado [9], and an assist suit by Maeda [10]. Generally, active power assist devices with large output to amplify human forces by many times require power sources and many other actuators, making them very heavy. ...
