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Ise, Japan

Kogakkan University is a private university at Ise, Mie, Japan. The predecessor of the school was founded in 1882, and it was chartered as a university in 1940. Wikipedia.

Chiba T.,University of Tsukuba | Endo K.,Nihon University | Sugai T.,University of Tokyo | Haraguchi T.,Osaka City University | And 2 more authors.
Quaternary International

Environmental changes in arid central Asia are prominently manifest through changes in the water balance. Lake Balkhash, the largest lake in Kazakhstan, is a shallow lake situated in a closed basin. We obtained a 600-cm-long core from the western part of the lake in 2007 and carried out analyses of fossil diatoms and ostracods, geochemistry, and grain size of the sediments. The age control of the core is based on radiocarbon ages of fossil ostracods and, in the uppermost part, the AD 1963 137Cs activity peak and the first appearance of 137Cs in AD 1952. We recognized two main diatom assemblages by detrended correspondence analysis, one characterized by the dominance of freshwater planktonic species, and the other dominated by brackish planktonic, brackish, and marine benthic, and freshwater benthic species. The first assemblage suggests higher lake levels, and the second suggests lower lake levels. The observed assemblage changes are consistent with lake-level observations recorded during the last 120 years. The diatom assemblage data from the core indicate that there were seven periods when the lake level was low during the last 2000 years; moreover, the pH of the lake changed together with the lake level. In addition, during periods when the lake level was low from AD 1260-2000, the abundance of fossil ostracods and the Ca and TOC contents were low in comparison with the periods before AD 1260. The causes of low water levels were essentially the same between Lake Balkhash and the Aral Sea during the studied period. One likely cause of the low water levels, especially those during the last 1200 years, is changes in solar activity. Furthermore, some environmental changes during the past 40 years can be explained by human activities. © 2015 Elsevier Ltd and INQUA. Source

Chen J.,CAS Institute of Zoology | Chen J.,University of Chinese Academy of Sciences | Sorin M.,Kogakkan University | Qiao G.-X.,CAS Institute of Zoology

The aphid genus Asiphonipponaphis gen. n. from China is new to science. Asiphonipponaphis vasigalla sp. n. causing galls on Distylium chinense from Hunan, China is described and illustrated. Holotype and paratypes are deposited in the National Zoological Museum of China, Institute of Zoology, Chinese Academy of Sciences, Beijing, China (NZMCAS) and Kogakkan University, Japan. © Jing Chen at al. Source

Ohkawara K.,National Institute of Health and Nutrition | Nakata Y.,University of Tsukuba | Numao S.,Waseda University | Sasai H.,University of Tsukuba | And 4 more authors.
Annals of Nutrition and Metabolism

Objective: Serial measurements were used to examine the response of coronary heart disease (CHD) risk factors to regional fat changes during weight reduction. Methods: Nine Japanese obese men participated in a diet-induced weight loss program. Regional fat masses, abdominal visceral fat area (VFA), subcutaneous fat area (SFA) and CHD risk factors, including total (TC), high (HDLC)- and low-density lipoprotein cholesterol (LDLC), triglycerides (TG), fasting plasma glucose, immunoreactive insulin, homeostasis model assessment of insulin resistance (HOMA-IR), and glycosylated hemoglobin A1c (HbA1c) were assessed at baseline and after 1, 2 and 3 months. Results: Meanweight reduction during the study was -11.9 ± 4.2 kg, which was associated with a gradual, significant decrease (p < 0.05) in arm, leg and trunk fat masses, VFA and SFA. The levels of TC, LDLC and TG decreased significantly within 1 month and remained at these values, whereas HDLC, HOMA-IR, and HbA1c did not change. There was no significant correlation between changes in regional fat masses and CHD risk factors in any period studied. Conclusions: CHD risk factors do not necessarily respond in the same manner as changes in body fat during diet-induced moderate weight reduction. © 2010 S. Karger AG, Basel. Source

Numao S.,Waseda University | Katayama Y.,Kogakkan University | Hayashi Y.,Chiba Institute of Technology | Matsuo T.,University of Tsukuba | Tanaka K.,University of Tsukuba
Metabolism: Clinical and Experimental

Exercise intensity may induce changes in total adiponectin and adiponectin oligomer levels. However, the effects of acute aerobic exercise on total adiponectin and adiponectin oligomers in middle-aged abdominally obese men remain unknown. The purpose of this study was to investigate the influence of aerobic exercise intensity on changes in the concentrations of total adiponectin and adiponectin oligomers (high-molecular weight [HMW] and middle- plus low-molecular weight [MLMW] adiponectin), and the endocrine mechanisms involved in exercise-induced changes in adiponectin oligomer profiles in middle-aged abdominally obese men. Using a crossover design, 9 middle-aged abdominally obese men (age, 54.1 ± 2.4 years; body mass index, 27.9 ± 0.6 kg/m 2) underwent 2 trials that consisted of 60 minutes of stationary cycle exercise at either moderate-intensity (ME) or high-intensity (HE) aerobic exercise (50% or 70% of peak oxygen uptake, respectively). Blood samples were collected to measure the concentrations of adiponectin oligomers, hormones (catecholamines, insulin, and growth hormone), metabolites (free fatty acid, glycerol, triglyceride, and glucose), and cytokines (interleukin-6 and tumor necrosis factor-α). After exercise, plasma catecholamine concentrations were higher during HE than during ME (P < .05). Total adiponectin concentration decreased at the end of HE (P < .05), but remained unchanged after ME. The HMW adiponectin concentration did not change at either intensity, whereas the MLMW concentration decreased at the end of HE (P < .05). The ratio of HMW to total adiponectin concentration increased significantly (P < .05), whereas the ratio of MLMW to total adiponectin concentration decreased significantly (P < .05), at the end of HE. The percentage changes in epinephrine concentration from baseline to the end of exercise were correlated with the percentage changes in total adiponectin concentration (r = -0.67, P < .05) and MLMW adiponectin concentration (r = -0.82, P < .05) from baseline to the end of HE. Our results indicate that the change in total adiponectin was mainly due to a change in MLMW adiponectin concentration during high-intensity exercise in middle-aged abdominally obese men. Epinephrine may partially regulate the decrease in total and MLMW adiponectin concentrations during high-intensity exercise. © 2011 Elsevier Inc. All rights reserved. Source

Katayama Y.,Kogakkan University
[Nihon kōshū eisei zasshi] Japanese journal of public health

To compare the effects of weekly or bi-weekly dietary sessions with the same number of total lecture hours, periods, and lecture contents on weight loss, dropouts during the intervention, and the weight loss maintenance after 1 year. The study included 52 middle-aged women with at least 1 risk factor for cardiovascular disease (i.e., obesity, hypertension, dyslipidemia, and hyperglycemia) who were encouraged to lose weight. Thirty-seven women were assigned to the weekly class (self-selected weekly class group: n=26) or the bi-weekly class (self-selected bi-weekly class group: n=11) based on their preference. Fifteen women were assigned to the bi-weekly class against their will (bi-weekly class group). All groups participated in the same number of sessions (total, 26 h), and were instructed to reduce their dietary intakes to 1200 kcal/day for 13 weeks. The self-selected weekly class group attended a 2-h instructional session every week, whereas both the bi-weekly class groups received 1-h sessions twice a week. Data on the body weight of the participants was collected 1 year after the intervention using a self-administered questionnaire via mail. The self-selected bi-weekly class group had significantly fewer dropouts (self-selected weekly class group: 5 persons, 19.2%; self-selected bi-weekly class group: 1 person, 9.0%; bi-weekly class group: 8 persons, 53.3%; P<0.05). There was a significant decrease in weight (P<0.05) in all 3 groups during the intervention (self-selected weekly class group: -4.3±2.7 kg, self-selected bi-weekly class group: -6.7±3.0 kg, bi-weekly class group: -6.0±3.4 kg). However, weight loss in the self-selected bi-weekly class group was significantly greater than that in the other 2 groups. A significant change in body weight at the 1-year follow-up was not observed in any group (self-selected weekly class group: +0.4±1.3 kg, self-selected bi-weekly class group: -0.1±2.3 kg, bi-weekly class group: +0.5±0.6 kg). Repeated-measures ANOVA (time×group) revealed no significant interactions in weight loss. These results suggest that a greater frequency of dietary sessions contributes to weight loss, while a lesser frequency of dietary sessions contributed to a decrease in questionnaire recovery rates. The dropout rate in the self-selected weekly and bi-weekly class groups was lesser than that in the bi-weekly class group. Therefore, dietary sessions tailored to the needs of the participants might decrease the dropout rate. Source

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