Ise, Japan
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.

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Tsukamoto S.,Leibniz Institute for Applied Geophysics | Kondo R.,Kogakkan University | Lauer T.,Max Planck Institute for Evolutionary Anthropology | Jain M.,Technical University of Denmark
Quaternary Geochronology | Year: 2017

Elevated temperature post-infrared infrared stimulated luminescence (post-IR IRSL; pIRIR) dating method using feldspar has led to a significant advancement in dating Quaternary sediments, as this signal has been shown to be stable on geological time scales. In comparison to the conventional IRSL, the pIRIR signal is nearly free from anomalous fading, but it is more difficult to reset during daylight exposure; the latter characteristic may give rise to age over-estimation in some environments because of partial bleaching. The pulsed IRSL signal has also been known to be less affected by anomalous fading, when the signal is recorded during the off-time of LED stimulation pulses. In this study, we compare the signal bleachability, thermal and athermal stability, and age estimates derived using different measurement methods, i.e., pulsed IRSL measured at 50 °C (pulsed IR50; subscripts refers to measurement temperature), continuous wave (CW) pIRIR225 and pIRIR290 signals, as well as the two IR50 signals measured as a part of the pIRIR protocols. This comparison is carried out for 3 samples taken from Late Quaternary fluvial sediments, which have independent age estimates from radiocarbon dating and tephrochronology. We observe that under exposure to solar simulator, the pulsed IR50 signal bleaches as rapidly as the CW IR50, and much more rapidly than the pIRIR signals. Furthermore, the pulsed IR50 signal is also as stable as the pIRIR signals, especially when the middle part of the decay curve is used for signal intensity calculation. © 2017 Elsevier B.V.


Takishita W.,Kogakkan University | Takenaka M.,Kogakkan University | Nagaoka D.,Kogakkan University | Ogiso K.,Kogakkan University
Rigakuryoho Kagaku | Year: 2016

[Purpose] This study was designed to clarify the effects of the in vivo fascicle behavior of the vastus lateralis muscle (VL) on the knee joint torque (KJT)- angle (KJA) relationship, and to examine the indirect contributions of tendinous tissues to it. [Subjects and Methods] Fifteen males performed voluntary (VOL) and electrically (ELE) stimulated isometric knee extensions, at KJAs of 30, 60 and 90˚. For the ELE condition, electrical stimulation (ES) of 20 Hz was applied to the VL at 10 different intensity levels. [Results] In VOL, positive relationships were observed between EMG and KJT. Movement of the fascicle increased with KJA. In ELE, KJT was constant at 30˚ and gradually increased at larger KJA with ES intensity. As KJA decreased, fascicle movement in the proximal direction increased. [Conclusion] The results suggest that the KJT-KJA relationship is influenced by the behavior of tendinous tissue due to there being more slack in the tissue in extended positions. © 2015, Society of Physical Therapy Science (Rigaku Ryoho Kagakugakkai). All rights reserved.


Zhao X.,University of Tsukuba | Tsujimoto T.,University of Tsukuba | Kim B.,University of Tsukuba | Katayama Y.,Kogakkan University | Tanaka K.,University of Tsukuba
Journal of Back and Musculoskeletal Rehabilitation | Year: 2017

BACKGROUND: Different characteristics of foot morphology are commonly accompanied by altering lower extremity biomechanical characteristics and foot function. Clarifying what factors affect foot morphology is helpful in understanding the basis of foot deformity and foot dysfunction. OBJECTIVE: The aim of this study was to investigate characteristics of foot morphology and whether related factors such as gender, age, body mass index (BMI) and bilateral asymmetry have an impact on foot morphology. METHODS: One hundred and eighty adults without exercise habit were included in this cross-sectional study. Participants were categorized by gender, age, BMI, and left and right foot respectively to compare foot morphology differences. The characteristics of foot morphology were measured using a 3D foot scanner. RESULTS: Compared with females, males had longer, larger and higher feet. In terms of age differences, older adults had shorter and stiffer feet. Regarding BMI differences, the value of height and width parameters of foot was larger, and the value of height of arch also larger in those with greater BMI. Regarding bilateral asymmetry, the right foot had a higher foot than the left foot. Multiple linear regression models indicated that gender, age and BMI significantly affected length and girth parameters of foot together. CONCLUSIONS: This study showed that gender has a bigger impact on length, width, height and girth parameters of foot than BMI or age. BMI has an impact on both arch height and stiffness. Besides, bilateral asymmetry affects values of height parameters of foot and arch. © 2017 - IOS Press and the authors. All rights reserved.


Katayama Y.,Kogakkan University
[Nihon kōshū eisei zasshi] Japanese journal of public health | Year: 2013

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.


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
ZooKeys | Year: 2011

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.


Sasai H.,University of Tsukuba | Sasai H.,Japan Society for the Promotion of Science | Katayama Y.,Kogakkan University | Nakata Y.,University of Tsukuba | And 4 more authors.
Diabetes Research and Clinical Practice | Year: 2010

Aim: To examine the effects of vigorous physical activity (PA) on intra-abdominal fat (IF) levels in obese men. Methods: Thirty-seven obese men (mean age: 47.6 ± 8.6 years) engaged in a 12-week aerobic exercise program on a regular basis (3 days/week). We divided them into low volume of vigorous PA group (n = 19) or high volume of vigorous PA group (n = 18), based on the median time spent (34.3 min/week) in vigorous PA (over 6.1 metabolic equivalents assessed by a single-axis accelerometer) throughout the program. Results: Regular exercise reduced IF levels (measured by computed tomography) from 188.1 ± 53.9 cm2 to 170.3 ± 46.6 cm2 for the low volume of vigorous PA group and from 167.9 ± 44.3 cm2 to 137.9 ± 40.6 cm2 for the high volume of vigorous PA group. Two-way (time × group) ANOVA revealed no significant interactions for the IF level. However, correlation analysis for all participants showed that time spent in vigorous PA throughout the program significantly correlated to IF reductions after adjusting for initial levels of IF, vigorous PA and weight changes (r = -0.42, P = 0.02). Conclusion: This study suggests that vigorous PA may affect IF reductions in obese men. © 2009 Elsevier Ireland Ltd. All rights reserved.


Blackman R.L.,Natural History Museum in London | Sorin M.,Kogakkan University | Miyazaki M.,Japan National Institute for Agro - Environmental Sciences
Zootaxa | Year: 2011

Recent molecular studies have shown that the genus Toxoptera is polyphyletic, and in particular that the name of the aphid known since 1952 as Toxoptera odinae (van der Goot) should revert to Aphis odinae (van der Goot), stat. rev. In this paper oviparae, alate males and fundatrices of A. odinae are described for the first time, from Japan. A. odinae is common as a grey-brown or rust-brown aphid on numerous plant species of shrubby habit throughout the Old World tropics and subtropics, but in temperate east Asia much darker forms occur, and Japanese populations of A. odinae include a dark green form not found elsewhere in the world. Multivariate morphometrics were used to confirm that both colour forms of the aphid in Japan were conspecific with samples from other parts of the world. Pergandeida kalopanacis Hori 1927 is a new synonym of A. odinae. Copyright © 2011 Magnolia Press.


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 | Year: 2011

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.


PubMed | Kogakkan University and University of Tsukuba
Type: Journal Article | Journal: Journal of physical therapy science | Year: 2016

[Purpose] The purpose of this study was to examine the effects of increasing physical activity on foot structure and ankle muscle strength in adults with obesity and to verify whether the rate of change in foot structure is related to that in ankle muscle strength. [Subjects and Methods] Twenty-seven adults with obesity completed a 12-week program in which the intensity of physical activity performed was gradually increased. Physical activity was monitored using a three-axis accelerometer. Foot structure was assessed using a three-dimensional foot scanner, while ankle muscle strength was measured using a dynamometry. [Results] With the increasing physical activity, the participants feet became thinner (the rearfoot width, instep height, and girth decreased) and the arch became higher (the arch height index increased) and stiffer (the arch stiffness index increased); the ankle muscle strength also increased after the intervention. Additionally, the changes in the arch height index and arch stiffness index were not associated with changes in ankle muscle strength. [Conclusion] Increasing physical activity may be one possible approach to improve foot structure and function in individuals with obesity.


PubMed | Kogakkan University and University of Tsukuba
Type: | Journal: Journal of back and musculoskeletal rehabilitation | Year: 2016

Different characteristics of foot morphology are commonly accompanied by altering lower extremity biomechanical characteristics and foot function. Clarifying what factors affect foot morphology is helpful in understanding the basis of foot deformity and foot dysfunction.The aim of this study was to investigate characteristics of foot morphology and whether related factors such as gender, age, body mass index (BMI) and bilateral asymmetry have an impact on foot morphology.One hundred and eighty adults without exercise habit were included in this cross-sectional study. Participants were categorized by gender, age, BMI, and left and right foot respectively to compare foot morphology differences. The characteristics of foot morphology were measured using a 3D foot scanner.Compared with females, males had longer, larger and higher feet. In terms of age differences, older adults had shorter and stiffer feet. Regarding BMI differences, the value of height and width parameters of foot was larger, and the value of height of arch also larger in those with greater BMI. Regarding bilateral asymmetry, the right foot had a higher foot than the left foot. Multiple linear regression models indicated that gender, age and BMI significantly affected length and girth parameters of foot together.This study showed that gender has a bigger impact on length, width, height and girth parameters of foot than BMI or age. BMI has an impact on both arch height and stiffness. Besides, bilateral asymmetry affects values of height parameters of foot and arch.

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