• Journal of Life Science
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• v.21 no.11
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• pp.1612-1618
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• 2011

The present study was undertaken to analyze the effects of different types of treatment on excess post exercise oxygen consumption (EPOC), flexibility, free radical and antioxidants in women using a horseback riding therapeutic device. Subjects were trained in regular horseback riding exercises for 12 weeks (3 times/wk). The effects of this exercise were examined by means of a single session of horseback riding that lasted for 30 min. 21 women were recruited from a public health center and divided into 3 groups (passive recovery group, passive+massage recovery group, and dynamic recovery group). 3 types of recovery patterns were determined after a single trial of horseback riding exercise. Their flexibility were determined pre-and post-training by Paired T test, and ANOVA were used to analyze the data. The results were as follows: Among the 3 groups, the dynamic recovery group showed the highest levels of EPOC compared to the other groups, and also showed higher levels of anti-oxidants, as did the passive+massage recovery group compared to the passive recovery group. Moreover, horseback riding exercise greatly increased flexibility in the women. In conclusion, regular horseback riding training is recommended to enhance the flexibility of women and dynamic recovery is recommended to enhance EPOC and anti-oxidants after a single bout of exercise. Further study is needed in this area.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.3
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• pp.252-260
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• 2021

For frailty management, the importance of resistance exercise has been emphasized, and various devices have been developed. Recently, digital weight control technology that converts electromagnetic resistance to a digital weight is attracting attention, but there are no reports confirming the effectiveness and safety of the device for seniors in Korea. This study conducted a biomechanic-based ergonomic analysis of an elderly-friendly exercise device utilized in digital load control technology to suggest a direction for development. Twenty seniors (age: 62.40 ± 2.09 years) were included. The load of the device was classified into three levels, and the muscle activity and heart rate were assessed during three experimental motions. A questionnaire based on the International Organization for Standardization 9241-11 was adopted to evaluate the stability, operationality, efficiency, and satisfaction with the software and device. The program could be divided into three exercise intensities that can be utilized in the field depending on whether the exercise load, muscle activity, and heart rate were consistent. The monitor size needed to be enlarged to make the menu Korean, reduce the device size, and minimize noise. Considering these findings, the development of an advanced age-friendly exercise device by improving the size, display, and noise is suggested.

• Transactions of the Korean Society of Mechanical Engineers
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• v.10 no.4
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• pp.577-584
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• 1986

본 연구에서는 측정자가 시간과 노력을 소비하면서 3차원 연쇄기구의 공간운 동을 유추적으로 측정한 현재까지의 실험측정을 지양하고, 국내에서 구입 가능하고 염 가인 Apple II와 같은 같은 마이크로 컴퓨터 또는 마이크로프로세서를 이용, 3차원 연 쇄기구의 공간운동을 신속하고 정확하게 측정분석하는 자동 실험장치를 설계 제작한 다음, 이 장치를 일반 3차원 연쇄기구 모델에 적용 측정된 결과를 기호방정식을 이용 한 일반 연쇄기구 운동식의 이론 결과와 비교 검토하였다.

• Journal of the Korea Convergence Society
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• v.7 no.6
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• pp.287-295
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• 2016

This study was conducted of students in their youth, who were having behavioral and emotional problems, anxiety, depression, and ADHD in their school. The participants took part in equestrian sports programs(equestrian program and apparatus program) twice a week, for 60 minutes each. To make progress in the study, mainly 4 scales are used as the standards of preliminary and post inspections : emotional and behavioral development scale, anxiety scale, depression scale, and ADHD scale. After conducting two-way ANOVA analysis, the conclusion was made as follows. The equestrian sports and horse riding exercise program which were used in this study did had an positive effect on emotional and behavioral scale, depression scale, anxiety scale, and ADHD scale. Moreover, it is determined that the equestrian sports had more positive effects than the equestrian sports which used apparatus. However, to precisely compare and contrast the effects of equestrian sports programs and apparatus programs, the follow-up studies need to limit the control group.

• Transactions of the Korean Society of Mechanical Engineers
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• v.9 no.4
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• pp.528-538
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• 1985

A R-S-S-R three dimensional mechanism is designed for crank-rocker type through the optimization technique. The nonlinear kinematic equation of the mechanism is formulated by adopting the concept of structural error and precision points. Taking this equation as an objective function, the required mechanism is optimally synthesized by the Fletcher-Davidon-Powell's method of optimization techniques. The structural errors due to the various positions of precision points are compared, and the results from the use of two penalty functions suggested respectively by Fiacco-McCormick and by Powell are also compared on their effectiveness. The mobility of the optimally designed mechanism is checked for the possibility of its motion, and when a mechanism is optimally designed, it is strongly suggested that the mobility must be checked on the designed mechanism.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.321-322
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• 2022

Recently, in the field of health care, health management topics are being dealt with a lot. In particular, services are concentrated in the field of exercise, and many exercise equipment fused with the 4th industry-based technology are also appearing. In general, a form of collecting user's exercise information by mounting various sensors on exercise equipment and linking services based on this is representative. In this paper, we propose an efficient data transmission based on the design in the process of transmitting the exercise data generated by the equipment to the smartphone through the Bluetooth-based IoT sensor and transmitting it back to the exercise information analysis platform.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2003.10a
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• pp.105-105
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• 2003

• Development and Reproduction
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• v.7 no.2
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• pp.81-88
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• 2003

Initiation and activation of sperm motility are prerequisite processes for the contact and fusion of male and female gametes at fertilization. The phenomena are under the regulation of CAMP and $Ca^{2+}$ in vertebrates and invertebrates. Mammalian sperm requires $Ca^{2+}$and cyclic AMP for the activation of sperm motility. Cell signaling for the initiation and activation of sperm motility has been well studied in the ascidians, Ciona intestinalis and C. savignyi and salmonid fishes. In Ciona, whose cell signaling for activation of sperm motility has been established, the sperm-activating and -attracting factor released from unfertilized egg requires extracellular $Ca^{2+}$ for activating sperm motility and eliciting chemotactic behavior of the activated sperm toward the egg. On the other hand, the cyclic AMP-dependent phosphorylation of protein is essential for the initiation of sperm motility in salmonid fishes. A decrease in the environmental Ti concentration surrounding the spawned sperm causes a li efflux and $Ca^{2+}$ influx through the specific $K^{+}$ channel and dihydropyridine-sensitive L-/T- type $Ca^{2+}$ channel, respectively, thereby leading to the membrane hyperpolarization and $Ca^{2+}$ influx. The membrane hyperpolarization synthesizes cyclic AMP, which triggers the luther Process of cell signaling, i.e., cyclic AMP-dependent protein phosphorylation, to initiate sperm motility in salmond fishes.almond fishes.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.07a
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• pp.231-232
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• 2016

본 논문에서는 세라밴드의 장점과 ICT기술을 접목시키고 운동 흥미유발 및 재미추구를 보안한 소도구를 개발하여 소비자 위주의 보급을 제안한다. 기존의 소도구 및 기구의 사용에 있어 소비자의 가격부담을 최소화하고 운동기구의 휴대성을 극대화시킨다. 또한 운동 시 지루함을 느끼지 않도록 개개인에게 맞춤형 운동 정보를 제공 하고 다함께 어울려 할 수 있는 운동 프로그램을 개발하고자 한다. 이 연구를 통해 공간에 제약 없이 어디서든 쉽고 재미있게 운동을 할 수 있고 정확한 정보를 가지고 체계적인 운동을 할 수 있게끔 장려 할 것 이다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.07a
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• pp.129-130
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• 2016

본 연구는 재미있고 건강한 삶을 추구하는 현대인들이 누구나 즐길 수 있고 재활운동까지 가능하도록 간단한 소도구 운동기구와 결합된 이용자 맞춤형 리듬게임 콘텐츠를 설계한 것이다. 본 시스템은 센서가 부착된 소도구 운동기구와의 인터랙티브를 통해 사용자의 건강상태를 점검할 수 있는 사용자 분석용 콘텐츠와 사용자 건강 상태별로 운동 목표 설정, 종류, 난이도 등의 선별 기능으로 운동 효과를 극대화 할 수 있게 설계되었다. 또한 콘텐츠에 따른 음악, 동작 등의 다양화, 플레이 결과에 따른 점수(확장형의 경우 N/W 에 의한 플레이어 상호간 경쟁유도) 등으로 이용자에게 몰입과 재미를 제공하도록 설계하였다.