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Search Results: 1 - 10 of 814 matches for " Yoshinori Nagasawa "
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Age and Gender-Related Differences in Physical Functions of the Elderly Following One-Year Regular Exercise Therapy  [PDF]
Hiroe Sugimoto, Shinichi Demura, Yoshinori Nagasawa
Health (Health) , 2014, DOI: 10.4236/health.2014.68101
Abstract: Reports on physical functions during maintenance period of the elderly with cardiac and other serious diseases are limited. This study aims to clarify age and gender-related differences in their physical functions. Participants included 167 elderly individuals (males, 78; mean age, 76.5 years; SD = 6.0 years; females, 89; mean age, 75.5 years; SD = 4.5 years) who participated in a 1-year regular exercise therapy twice a week. The following eight physical function tests were selected: grip strength, 10-m obstacle walking time, one-legged balance with eyes open, sit-ups, sitting trunk flexion, 6-min walk, stepping by sitting position, and a timed up & go (TUG). Two-way analysis of variance was used to examine mean differences by gender and age: young elderly group (aged 65 - 74 years) and old elderly group (aged ≥ 75 years). In the grip strength, sit-ups, 6-min walk, 10-m obstacle walking time, stepping by sitting position, and sitting trunk flexion tests, males were superior in the former four tests, and females were superior in the latter two tests. The young elderly group was superior in all tests except for sit-ups compared with the old elderly group. The balance during one-legged with eyes open test was superior in males compared with females in the young elderly group, but decreased in males in the old elderly group. In conclusion, physical functions of the elderly during maintenance period are different between genders. Muscle strength, muscle endurance, whole-body endurance, and walking ability are superior in males, whereas flexibility and agility are superior in females. The old elderly group was inferior in all the elements of physical function except muscle endurance.
Relationship Between Ball Kick Velocity and Leg Strength: A Comparison Between Soccer Players and other Athletes  [PDF]
Takanori Noguchi, Shin-ichi Demura, Yoshinori Nagasawa
Advances in Physical Education (APE) , 2012, DOI: 10.4236/ape.2012.23017
Abstract: This study compared soccer players with non-soccer players, with respect to the relationship between ball velocity due to an instep kick and various leg strengths. Ten young university soccer players and ten other athletes (non-soccer players) had their instep kick ball velocity (BV) measured with respect to isokinetic leg strength. The BVs from the soccer players were significantly greater than those from the non-soccer group. However, this group also had significantly inferior dorsiflexion strength of the ankle joint (low: low angular velocity), extension of the knee joint (low, middle, and the total value of the evaluation parameters of all angular velocities), and flexion of the hip joint (middle). Positive and significant correlations between BV and flexion and dorsiflexion strengths of the ankle joint (low), extension (low, middle, high, and total), and flexion of knee joint (low and total), extension (low, high, and total), and flexion (high) of the hip joint were found in the soccer group, but a significant negative correlation was found only between BV and hip joint flexion strength (middle) in the non-soccer group. In conclusion, soccer players have similar or inferior isokinetic leg strength in comparison to other athletes, but their BV is faster.
Relationship between Extent of Coffee Intake and Recognition of Its Effects and Ingredients  [PDF]
Hiroki Sugiura, Shinichi Demura, Yoshinori Nagasawa, Shunsuke Yamaji, Tamotsu Kitabayashi, Shigeki Matsuda, Takayoshi Yamada, Ning Xu
Detection (Detection) , 2013, DOI: 10.4236/detection.2013.11001
Abstract: This study examined the relationship between number of cups of coffee intake and recognition of the effects of coffee intake and its ingredients in young males and females. The subjects included 624 young people (ages 15 - 24; 359 males, 265 females), who drank coffee habitually. They were classified into three groups on the basis of the number of cups of coffee consumed per day: “one cup,” “two cups,” and “over three cups.” In males, about 25% of the “over three cups” group expected “resolution of stress” from coffee, and this percentage was higher than that in the other groups. In females, about 18% of the same group had similar expectations; however, no significant group difference was found among the three groups. Few persons expected protective effects of diabetes mellitus and cancer in both genders (about 5% answer rate). About 20% of males and 18% of females in the “over three cups” group recognized the “laxative property” of coffee intake, and a significant group difference was found only in males. Even in the “one cup” group, over 77% knew that “caffeine” is an ingredient of coffee; however, few persons (under 15%) knew “poly-phenol,” which has protective effects of diabetes mellitus and cancer. In addition, no significant group difference was found in both genders. In conclusion, regardless of the coffee intake cup-number in both genders, recognition of the effects of coffee intake was low in both males and females and the recognition of effects differs by the intake cup-number in males. Only few persons knew the other ingredients in coffee apart from “caffeine.”
Seasonal Variation in a Hymenopterous Parasitoid, Holcotetrastichus rhosaces (Walker) (Hymenoptera: Tetrastichinae), on Its Hosts, Cassida nebulosa L. and C. piperata Hope (Coleoptera: Chrysomelidae), in Sendai, Northeastern Area of Japan  [PDF]
Atsuhiko Nagasawa
Advances in Entomology (AE) , 2014, DOI: 10.4236/ae.2014.24026
Abstract: To investigate the seasonal variation of parasitism on Cassida nebulosa L. and C. piperata Hope, this research was conducted at the experimental field of Tohoku University in Sendai, Japan, where these tortoise beetles were parasitized by hymenopterous parasitoid Holcotetrastichus rhosaces (Walker). Percentage parasitism started to increase from the middle of July and reached nearly 100% in August. Adults of H. rhosaces emerged from the pre-pupae of the tortoise beetles, with 6 to 30 adults emerging per pre-pupae. The second generation of C. nebulosa and C. piperata was heavily parasitized by H. rhosaces. The adults of these tortoise beetles were rarely found in the field during late summer due to the high rates of parasitism.
Food Preference of Pecky Rice Bugs Is Influenced by Experience  [PDF]
Atsuhiko Nagasawa
Advances in Entomology (AE) , 2016, DOI: 10.4236/ae.2016.42012
Abstract: This study investigated whether prior experience influences the plant food preference of Trigonotylus caelestialium and Stenotus rubrovittatus which cause pecky rice grain, by using rice plants and 2 poaceous weeds. In a choice experiment between Digitaria ciliaris and the rice plants, both T. caelestialium and S. rubrovittatus adults that were reared on D. ciliaris plants showed significant initial preference for D. ciliaris over rice. In a choice experiment between Echinochloa crus-galli var. aristata and rice plants, T. caelestialium adults reared on E. crus-galli var. aristata strongly preferred E. crus-galli var. aristata over rice throughout the experiment. However, at and after 24 h, T. caelestialium adults reared on rice showed no food preference, although T. caelestialium initially preferred E. crus-galli var. aristata. In contrast, S. rubrovittatus adults reared on rice showed no preference between E. crus-galli var. aristata and rice. However, S. rubrovittatus reared on E. crus-galli var. aristata initially preferred E. crus-galli var. aristata to rice, with this preference waning with time. The same results were obtained for both sexes. Although the effect of experience differed with food source and the species of mirid bug, prior experience initially had a noticeable effect, which disappeared with time (1 d).
Analysis of Psychological Factors That Influence Preference for Luxury Food and Car Brands Targeting Japanese People  [PDF]
Kazutoshi Fujiwara, Shin’ya Nagasawa
American Journal of Industrial and Business Management (AJIBM) , 2015, DOI: 10.4236/ajibm.2015.59059
Abstract: This study examines the strong preference among Japanese people for luxury brands and makes a comparative analysis of the psychological factors that influence the development of purchase intentions and how they differ between the food and car luxury brands. An empirical analysis was performed by using psychological factors that influence the preference for luxury brands, which Sugimoto [1] demonstrated in a study on Japanese people. The results suggested the following: 1) Differentiation from Others is an important factor in developing purchase intentions for both food and car luxury brands and is a particularly important factor for cars; 2) Conformity to Group Norms is not an important factor in developing purchase intentions for both food and car luxury brands in which consumers continue to feel a sense of rarity; 3) Avoiding Cognitive Dissonance is an important factor in developing purchase intentions for both food and car luxury brands; 4) Quality Evaluation is an important factor in developing purchase intentions for food luxury brands only.
Relationships among Purchase Intentions for Luxury Brands and Personality Traits Based on the Big Five  [PDF]
Kazutoshi Fujiwara, Shin’ya Nagasawa
American Journal of Industrial and Business Management (AJIBM) , 2015, DOI: 10.4236/ajibm.2015.511063
Abstract: Fujiwara and Nagasawa [1] verified differences in the degree of effect of the four psychological factors1 that constituted Japanese people’s preference for luxury brands on the development of purchase intentions for luxury food and car brands. This study is related to the study mentioned above and verifies the effects of consumers’ personality traits on purchase intentions for these luxury brands. It uses a personality trait classification method called the “Big Five personality traits” to perform an empirical analysis of the way that the five dimensions of personality traits4 influence purchase intentions for each brand. As a result, it suggests 1) that the purchase intentions of emotionally unstable consumers with a high dimension of Neuroticism for FERRARI and PORSCHE are significantly lower than those with a low dimension of Neuroticism and 2) that the purchase intentions of consumers who are highly devoted to art and have a high dimension of Openness to Experience for DOM PERIGNON, FERRARI, ROLLS-ROYCE and PORSCHE are significantly higher than those with a low dimension of Openness to Experience.
Psychological Factors That Influence Preference for Luxury Brands: Effect of “Openness to Experience1” on Psychological Factors for the Development of Purchase Intentions  [PDF]
Kazutoshi Fujiwara, Shin’ya Nagasawa
American Journal of Industrial and Business Management (AJIBM) , 2015, DOI: 10.4236/ajibm.2015.512077
Abstract: Fujiwara & Nagasawa [1] performed an empirical analysis on the relationship between personality traits and purchase intentions for food and car luxurybrands2 by using the Big Five personality traits. The results revealed that consumers with high levels of Openness to Experience showed high purchase intentions for those brands. The objective of this study was to refine those results and to reveal the characteristics of psychological factors regarding the development of purchase intentions for consumers with high levels of Openness to Experience. As a result of empirical analysis using multiple regression analysis, this study demonstrated that satisfying the need for Differentiation from Others was particularly important in developing purchase intentions for those consumers with high levels of Openness to Experience for both food and car luxury brands.
Epstein-Barr-Virus-Positive B-Cell Lymphoma of Recipient Origin Despite of the Elimination of Clonally EBV-Infected T Cells by Allogeneic Stem Cell Transplantation in a Patient with Chronic Active EBV Infection
Masayuki Nagasawa
Case Reports in Transplantation , 2012, DOI: 10.1155/2012/164824
Abstract: A 20-year-old patient with chronic active EBV infection (CAEBV) received peripheral blood stem cell transplantation (PBSCT) from HLA-one-locus-mismatched mother. Although EB-virus-infected T cells were eliminated after PBSCT, she developed EB-virus-positive B-cell lymphoma of recipient origin in the brain. By reducing the immunosuppressive therapy, the initial lesion disappeared. However, another lesion in the opposite lateral brain appeared later and was resistant to further reduction of immunosuppressive therapy. EBV-DNA was persistently negative after PBSCT in the peripheral blood. This case is suggestive in management of EBV reactivation after SCT and understanding alloimmune response to EBV.
Cosmological Symmetry Breaking and Generation of Electromagnetic Field
Michiyasu Nagasawa
Symmetry, Integrability and Geometry : Methods and Applications , 2010,
Abstract: Cosmological phase transitions accompanied by some kind of symmetry breaking would cause the creation of topological defects and the resulting production of primordial magnetic field. Moreover, such a procedure inevitably affects the cosmic background radiation and it may be observed today. Motivated by the existence of stabilized embedded defects in the standard model of elementary interactions, we discuss their application to the cosmological electromagnetic field generation.
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