Electromyographic analysis of thigh muscles during track cycling on a velodrome     

Kohei Watanabe  Takayuki Sato  Takahiro Mukaimoto  Wataru Takashima  Michio Yamagishi  Tetsunari Nishiyama 《Journal of sports sciences》2016,34(15):1413-1422

We aimed to investigate neuromuscular activation of thigh muscles during track cycling at various speeds. Eight male competitive cyclists volunteered to participate in this study. Surface electromyography of the vastus lateralis, biceps femoris and adductor magnus muscles of the bilateral legs was recorded during track cycling on velodromes with a 250-m track. The participants were instructed to maintain three different lap times: 20, 18 and 16 s. The average rectified value (ARV) was calculated from the sampled surface electromyography. Significantly higher ARVs were observed in the right compared to left leg for the biceps femoris muscle during both straight and curved sections at 18- and 16-s lap times (P < 0.05). In the biceps femoris muscle, significant changes in ARVs during the recovery phase with an increase in speed were seen in the right leg only (P < 0.05). There were no significant differences in ARVs between the straight and curved sections for all three muscles (P > 0.05). From our findings, it was suggested that during track cycling on a velodrome the laterality of the biceps femoris muscle activity is a key strategy to regulate the speed, and fixed neuromuscular strategies are adopted between straight and curved sections for thigh muscles.  相似文献   

Personalized learning in iSTART: Past modifications and future design     

Kathryn S. McCarthy  Micah Watanabe  Jianmin Dai  Danielle S. McNamara 《Journal of Research on Technology in Education》2020,52(3):301-321

Abstract

Computer-based learning environments (CBLEs) provide unprecedented opportunities for personalized learning at scale. One such system, iSTART (Interactive Strategy Training for Active Reading and Thinking) is an adaptive, game-based tutoring system for reading comprehension. This paper describes how efforts to increase personalized learning have improved the system. It also provides results of a recent implementation of an adaptive logic that increases or decreases text difficulty based on students’ performance rather than presenting texts randomly. High school students who received adaptive text selection showed increased sense of learning. Adaptive text selection also resulted in greater pre-training to post-training comprehension test gains, especially for less-skilled readers. The findings demonstrate that system-driven, just-in-time support consistent with the goals of personalized learning benefit the efficacy of computer-based learning environments.  相似文献   

A survey of broadcasting research in Japan     

Takeo Furu 《Educational technology research and development : ETR & D》1964,12(4):440-457

  相似文献   

How Japan makes use of international educational survey research     

Ryo Watanabe 《Prospects》1992,22(4):455-462

  相似文献   

Roles of attention in perceptual learning from perspectives of psychophysics and animal learning     

Yoshiaki Tsushima  Takeo Watanabe 《Learning & behavior》2009,37(2):126-132

The role of attention in perceptual learning has been a topic of controversy. Sensory psychophysicists/physiologists and animal learning psychologists have conducted numerous studies to examine this role; but because these two types of researchers use two very different lines of approach, their findings have never been effectively integrated. In the present article, we review studies from both lines and use exposure-based learning experiments to discuss the role of attention in perceptual learning. In addition, we propose a model in which exposure-based learning occurs only when a task-irrelevant feature is weak. We hope that this article will provide new insight into the role of attention in perceptual learning to the benefit of both sensory psychophysicists/physiologists and animal learning psychologists.  相似文献   

Inspiration: One Percent and Rising     

Yasuhiko Watanabe  Yoshihiro Okada  Kengo Kaneji  Yoshitaka Sakamoto 《TechTrends》2009,53(3):33-34

  相似文献   

Characteristics of hospital-based Munchausen Syndrome by Proxy in Japan     

Fujiwara T  Okuyama M  Kasahara M  Nakamura A 《Child abuse & neglect》2008,32(4):503-509

OBJECTIVE: This article explores characteristics of Munchausen Syndrome by Proxy (MSBP) in Japan, a country which provides an egalitarian, low cost, and easy-access health care system. METHODS: We sent a questionnaire survey to 11 leading doctors in the child abuse field in Japan, each located in different hospital-based sites. Child abuse doctors answered questions regarding the characteristics of MSBP cases for whom they had helped care. RESULTS: Twenty-one MSBP cases (20 families) were reported. Characteristics of the victims included: no differences based on sex, 4.6 years of age on average when MSBP was confirmed, and an average of 1.9 years duration of MSBP abuse. Biological mothers were at least one of the perpetrators in 95% of cases. Among the 12 cases (57%) who remained with their families, 2 victims died. Only 5% of perpetrators had a medical background or relatives who engaged in healthcare work. CONCLUSION: There are similar features of MSBP cases between Japan and other English-speaking countries, such as the UK or the US. However, perpetrators of MSBP in Japan did not have a medical background. Easier access to hospital resources in Japan may give greater opportunities for perpetrators to obtain medical knowledge from doctors or nurses. PRACTICE IMPLICATIONS: The findings suggest that perpetrators of MSBP should not be assumed to possess a medical background in a country which provides universal medical care such as Japan. A contributory factor of MSBP may be the high frequency of medical consultations and equal level of accessibility of medical resources for Japanese citizens. Social welfare services that need to decide on custody for MSBP victims should recognize the relatively high risk of life-threatening danger in their family of origin. Further collaboration between hospital staff including pediatricians, nurses, medical social workers and staff at the social welfare services is needed to protect children from MSBP.  相似文献   

The role of cultural identity as a learning factor in physics: a discussion through the role of science in Brazil     

Ivã Gurgel  Mauricio Pietrocola  Graciella Watanabe 《Cultural Studies of Science Education》2016,11(2):349-370

In recent decades, changes in society have deeply affected the internal organization and the main goals of schools. These changes are particularly important in science education because science is one of the major sources of change in peoples’ lives. This research provided the opportunity to investigate how these changes affect the way teachers develop their classroom activities. In this work, we focus on science as part of the cultural identity of a society and how this identity affects the process of teaching and learning inside the classroom. Other works have shown that certain social characteristics such as gender, race, religion, etc., can create a cultural barrier to learning science. This results in an obstacle between those particular students and the science that is taught, hindering their learning process. We first aim to present the notion of identity in education and in other related fields such as social psychology and sociology. Our main purpose is to focus on identity in a school setting and how that identity affects the relationship students have with the science content. Next, we present and analyze an intervention in the subject of Modern and Contemporary Physics composed by a sequence of activities in a private school in the region of Sao Paulo State, Brazil. This intervention serves to illustrate how scientific topics may be explored while considering aspects of cultural differences as an obstacle. The intervention was completed in two steps: first, in the classroom with a discussion concerning scientific works and nationality of scientists, with one being a Brazilian physicist; second, taking students to visit a particle collider at the University of São Paulo. One of the results of our research was realizing that students do not perceive science as something representative of the Brazilian cultural identity. At the same time, the activity gave the students the opportunity to make the connection between doing physical sciences at an international level and the national level in Brazil. The findings of this study suggest that it is possible to reshape the cultural identity of Brazilian students.  相似文献   

Post-war children’s literature in Japan     

Shigeo Watanabe 《International Information and Library Review》2013,45(2):113-124

  相似文献   

Impacts of university education reform on faculty perceptions of workload     

Satoshi P. Watanabe 《Asia Pacific Journal of Education》2011,31(4):407-420

Since the corporatization of national universities, the environment surrounding Japanese universities has dramatically changed in various respects. A series of government-led attempts have intended to support the domestic colleges and universities in gaining a competitive edge by improving the quality of teaching and research as well as guaranteeing the international validity of the country's higher education system. Impacts of all the challenges that have been tackled with internal efforts in the last few years could be enormous on the personnel workload. However, little is known about the impacts of Japan's recent university education reform, particularly on the changing workload of the faculty who engage at the forefront in student teaching and advising, administrative roles as well as research activities. Using results from individual faculty interviews, this paper attempts to link the changing workload of Japanese professors with specific reasons that are rooted in the country's recent university education reform. Reviewing the effects of the reform on faculty workload provides us with important insights for the long term and guides us to prevent the derailment from the endeavour to which a significant amount of resources have been dedicated by the country.  相似文献