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Ebine N Rafamantanantsoa HH Nayuki Y Yamanaka K Tashima K Ono T Saitoh S Jones PJ 《Journal of sports sciences》2002,20(5):391-397
To determine the daily energy requirements of professional soccer players during a competitive season, we measured total energy expenditure in seven players (age 22.1+/-1.9 years, height 1.75+/-0.05 m, mass 69.8+/-4.7 kg; mean +/- s) using the doubly labelled water method. Energy intake was simultaneously estimated from 7 day self-report dietary records. Mean total energy expenditure and energy intake were 14.8+/-1.7 MJ x day(-1) (3532+/-408 kcal x day(-1)) and 13.0+/-2.4 MJ x day(-1) (3113+/-581 kcal x day(-1)), respectively. Although there was a significant difference between total energy expenditure and energy intake (P < 0.01), there was a strong relationship between the two (r= 0.893, P< 0.01). Basal metabolic rate and recommended energy allowance calculated from the Recommended Dietary Allowances for the Japanese were 7.0+/-0.3 MJ x day(-1) (1683+/-81 kcal x day(-1)) and 15.6+/-0.8 MJ x day(-1) (3739+/-180 kcal x day(-1)), respectively. A physical activity level (total energy expenditure/ basal metabolic rate) of 2.11+/-0.30 indicated that, during the competitive season, professional soccer players undertake much routine physical activity, similar to that of competitive athletes during moderate training. Energy intake estimated using dietary records was under-reported, suggesting that its calculation from these data does not predict energy expenditure in soccer players. 相似文献
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F. Ishu Ishiyama Akio Kitayama 《International journal for the advancement of counseling》1994,17(3):167-182
Overwork and workaholism among Japanese corporate workers and related psychosocial issues are explored. Ishiyama's (1989) model of self-validation is used as a conceptual framework. The Japanese culture and the corporate structure are treated as the context in which social pressure for overwork and obsessive work-preoccupation are espoused. The authors examine the nature and consequences of overwork and career-centered self-validation, in terms of family, marital, and existential issues, as well as stress andkaroshi (death by overwork). Implications to counselling and social and systemic change are discussed. 相似文献
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Kazumi Masuda Nobuo Kikuhara Hideyuki Takahashi Kunio Yamanaka 《Journal of sports sciences》2013,31(10):851-858
Abstract The aim of the present study was to examine the relationships between muscle cross-sectional area (CSA) and muscular strength in terms of knee extension and flexion, hip extension and flexion, and hip abduction and adduction among well-trained soccer players. Fourteen university soccer players participated in the study, who had previously been divided into two groups based on ability (Group A: above-average ability; Group B: average ability). Maximal isokinetic and concentric muscular strength was measured in knee extension/flexion, hip extension/flexion and hip abduction/adduction using an isokinetic dynamometer at 1.57 and 4.19 rad·s?1 (3.14 rad·s?1) in both the dominant and non-dominant leg. The CSAs of the thigh, gluteus muscles and iliopsoas muscles were calculated based on magnetic resonance imaging. There was no significant difference between the two groups in muscle CSA and isokinetic strength. Although there were some statistically significant differences between the dominant and non-dominant leg in terms of CSA and strength (P<0.05–0.01), these were small and negligible. Apart from a non-significant relationship between the CSAs of the adductor muscles and hip adductor strength (r<0.26, n.s.), the CSA of the other muscle groups correlated with maximal isokinetic strength (r=0.38–0.64, P<0.05). These results suggest that no difference in muscle characteristics (in terms of muscle CSA and strength) was apparent among well-trained soccer players, even between the dominant and non-dominant leg. There is also a case that the anatomical function of a single (or group of) muscle(s) may not be reflected by the strength—CSA relationship depending on the movements (such as hip adduction-adductor muscle CSA). Thus, further studies are required to develop methods to assess neuromuscular function in relation to muscle morphology among soccer players. 相似文献
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Jaime Lester Aoi Yamanaka Brice Struthers 《Community College Journal of Research & Practice》2016,40(11):909-926
Career and technical education (CTE) programs account for a large proportion of student enrollments in community colleges each year. While women tend to dominate CTE enrollments overall, they remain concentrated in historically feminized fields contrary to nontraditional occupations in which less than 25% of workers are females. Drawing on the emerging research on microaggressions and classroom learning environments, this classroom observation research project of more than 80 hours of observations with supplemental student interviews sought to further an understanding of why women are underrepresented in specific CTE fields. The findings of this study indicated two distinct aspects of the classroom environment that helped stew a culture of gender microaggressions: the instructor pedagogy and communication style, and the impact of physical space. Physical structure, instructor pedagogy, and communication create an environment that often emphasizes and perpetuates social norms connecting men and masculinity to CTE and science, technology, engineering, and math education (STEM), which historically have been male-dominated environments. Results from this study extend the research on microaggressions and learning environments and fill a significant gap on gender and CTE. 相似文献
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Hiromi Shinno Satoshi Kurose Yutaka Yamanaka Kyoko Higurashi Yaeko Fukushima Hiromi Tsutsumi 《European Journal of Sport Science》2017,17(5):586-592
Purpose: Maintenance and enhancement of vascular endothelial function contribute to the prevention of cardiovascular disease and prolong a healthy life expectancy. Given the reversible nature of vascular endothelial function, interventions to improve this function might prevent arteriosclerosis. Accordingly, we studied the effects of a 6-month static stretching intervention on vascular endothelial function (reactive hyperaemia peripheral arterial tonometry index: RH-PAT index) and arterial stiffness (brachial-ankle pulse wave velocity: baPWV) and investigated the reversibility of these effects after a 6-month detraining period following intervention completion. Methods: The study evaluated 22 healthy, non-smoking, premenopausal women aged ≥40 years. Subjects were randomly assigned to the full-intervention (n?=?11; mean age: 48.6?±?2.8 years) or a half-intervention that included a control period (n?=?11; mean age: 46.9?±?3.6 years). Results: Body flexibility and vascular endothelial function improved significantly after 3 months of static stretching. In addition to these improvements, arterial stiffness improved significantly after a 6-month intervention. However, after a 6-month detraining period, vascular endothelial function, flexibility, and arterial stiffness all returned to preintervention conditions, demonstrating the reversibility of the obtained effects. Conclusion: A 3-month static stretching intervention was found to improve vascular endothelial function, and an additional 3-month intervention also improved arterial stiffness. However, these effects were reversed by detraining. 相似文献
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Hayato Yamanaka Uma Narula W. Barnett Pearce Barry Lesser Louis Vagianos 《Communication Booknotes Quarterly》2013,44(4-5):42-44
Australia, Henry Mayer reports on ten recent publications COMMUNICATIONS LAW AND POLICY IN THE PEOPLE'S REPUBLIC OF CHINA: EXPERIENCES & REFLECTIONS (International Law Institute, 1330 Connecticut Ave. NW, Washington, DC 20036 price not given, paper) JAPANESE COMMUNICATION STUDIES OF THE 1970S: BIBLIOGRAPHIC ABSTRACTS OF STUDIES PUBLISHED ONLY IN JAPANESE compiled by Hayato Yamanaka, et al. (Honolulu: University of Hawaii Press, 1986—price not given, paper) DEVELOPMENT AS COMMUNICATION: A PERSPECTIVE ON INDIA by Uma Narula and W. Barnett Pearce (Carbondale: Southern Illinois University Press, 1986—$19.95) COMPUTER COMMUNICATIONS AND THE MASS MARKET IN CANADA by Barry Lesser and Louis Vagianos (Brookfield, VT: Brookfield Publishing, 1985—$10.00, paper) SEX-ROLE STEREOTYPING IN THE BROADCAST MEDIA: A REPORT ON INDUSTRY SELF-REGULATION (Ottawa: Canadian Radio-Television and Telecommunications Commission, 1986—pricenot given, paper) 相似文献
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