Kojiro Ishii

ORCID: 0000-0002-3310-9470
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About
Contact & Profiles
Research Areas
  • Physical Activity and Health
  • Obesity, Physical Activity, Diet
  • Sports Performance and Training
  • Nutrition and Health in Aging
  • Body Composition Measurement Techniques
  • Cardiovascular and exercise physiology
  • Sports injuries and prevention
  • Chromosomal and Genetic Variations
  • Genomics and Chromatin Dynamics
  • Health and Wellbeing Research
  • Exercise and Physiological Responses
  • Children's Physical and Motor Development
  • Muscle metabolism and nutrition
  • Nutritional Studies and Diet
  • Microtubule and mitosis dynamics
  • Heart Rate Variability and Autonomic Control
  • Infrared Thermography in Medicine
  • Physical Education and Training Studies
  • Diet and metabolism studies
  • Musculoskeletal pain and rehabilitation
  • Balance, Gait, and Falls Prevention
  • Thermoregulation and physiological responses
  • Cerebral Palsy and Movement Disorders
  • Urban Transport and Accessibility
  • Genetics and Physical Performance

Doshisha University
2015-2024

Kochi University of Technology
2023-2024

General Education Center of Iwate
2022

Hokkaido University
2001-2019

Osaka University
2008-2017

Hokkaido University of Education
2002-2016

Kyoto Tachibana University
2016

Kyoto Medical Center
2016

Yamagata University
2016

Kyoto University of Advanced Science
2016

Assessing the total energy expenditure (TEE) and levels of physical activity in free-living conditions with non-invasive techniques remains a challenge. The purpose present study was to investigate accuracy new uniaxial accelerometer for assessing TEE physical-activity-related (PAEE) over 24 h period respiratory chamber, establish based on accelerometry ranges corresponding operationally defined metabolic equivalent (MET) categories. In 1, measurement seventy-nine Japanese subjects (40 (SD...

10.1079/bjn20031033 article EN British Journal Of Nutrition 2004-02-01

Methods that facilitate muscle quality measurement may improve the diagnosis of sarcopenia. Current research has focused on phase angle (PhA) obtained through bioelectrical impedance analysis (BIA) as an indicator cellular health, particularly cell membrane integrity and function. The current study therefore aimed to evaluate relationship between PhA muscle-related parameters determine factors associated with PhA. Moreover, we attempted cut-off value for predicting sarcopenia.First-year...

10.1002/jcsm.12860 article EN cc-by Journal of Cachexia Sarcopenia and Muscle 2021-11-30

The purposes of this study were to clarify the effects static stretching for 30 seconds and dynamic on leg extension power. Eleven healthy male students took part in study. Each subject performed 5 muscle groups lower limbs nonstretching separate days. Leg power was measured before after stretching, nonstretching. No significant difference found between (1788.5 +/- 85.7 W) that (1784.8 108.4 W). On other hand, (2022.3 121.0 significantly (p < 0.01) greater than These results suggest neither...

10.1519/15044.1 article EN The Journal of Strength and Conditioning Research 2005-01-01

The centromere is essential for the inheritance of genetic information on eukaryotic chromosomes. Epigenetic regulation identity has been implicated in genome stability, karyotype evolution, and speciation. However, little known regarding manner which dysfunction affects chromosomal architectures. Here we show that fission yeast Schizosaccharomyces pombe, conditional deletion produces survivors carry either a neocentromere-acquired chromosome at subtelomeric region or an acentric rescued by...

10.1126/science.1158699 article EN Science 2008-08-21

The centromeres of many eukaryotic chromosomes are established epigenetically on potentially variable tandem repeats; hence, these at risk being acentric. We reported previously that artificially created acentric in the fission yeast Schizosaccharomyces pombe can be rescued by end-to-end fusion with functional chromosomes. Here, we show most acentric/functional chromosome events S. cells harbouring an I differed from non-homologous end-joining-mediated rearrangements result deleterious...

10.1093/nar/gkv997 article EN cc-by-nc Nucleic Acids Research 2015-10-03

The purposes of this study were to clarify the effects static stretching for 30 seconds and dynamic on leg extension power. Eleven healthy male students took part in study. Each subject performed 5 muscle groups lower limbs nonstretching separate days. Leg power was measured before after stretching, nonstretching. No significant difference found between (1788.5 ± 85.7 W) that (1784.8 108.4 W). On other hand, (2022.3 121.0 significantly (p < 0.01) greater than These results suggest neither...

10.1519/00124278-200508000-00032 article EN The Journal of Strength and Conditioning Research 2005-08-01

The purpose of the present study was to clarify acute effect dynamic stretching exercise on muscular performance during concentric constant external resistance (DCER, formally called isotonic) muscle actions under various loads. Concentric DCER leg extension power outputs were measured in 12 healthy male students after 2 types pretreatment. pretreatments were: (a) treatment including exercises extensors and other simulating motion (2 sets 15 times each with 30-second rest periods between...

10.1519/r-21366.1 article EN The Journal of Strength and Conditioning Research 2007-01-01

Abstract A chromosome is composed of structurally and functionally distinct domains. However, the molecular mechanisms underlying formation chromatin structure function subtelomeres, telomere-adjacent regions, remain obscure. Here we report roles conserved centromeric protein Shugoshin 2 (Sgo2) in defining functions subtelomeres fission yeast Schizosaccharomyces pombe . We show that Sgo2 localizes at preferentially during G phase essential for a highly condensed subtelomeric body ‘knob’....

10.1038/ncomms10393 article EN cc-by Nature Communications 2016-01-25

Body mass index and waist circumference are used for obesity diagnosis screening of visceral fat; however, their evidence in older adults is insufficient. This study investigated the age-specific association body with metabolic diseases, assessing applicability as diagnostic criteria individuals aged ≥65 years.

10.1002/osp4.746 article EN cc-by Obesity Science & Practice 2024-03-18

The purpose of the present study was to clarify effect static stretching on muscular performance during concentric isotonic (dynamic constant external resistance: DCER) muscle actions under various loads.Concentric DCER leg extension power outputs were assessed in twelve healthy male subjects after two types pre-treatment.The pre-treatments included 1) treatment performing six extensors (4 sets 30-sec each with 20-sec rest periods; total duration: 20-min) and 2) non-stretching by resting for...

10.1519/r-18715.1 article EN The Journal of Strength and Conditioning Research 2006-01-01

10.1016/s1097-2765(03)00010-8 article EN publisher-specific-oa Molecular Cell 2003-01-01

Sarcopenic obesity is the co‐existence of and sarcopenia in individuals aged 40–75 years. The Japanese Working Group on Obesity has developed diagnostic criteria tailored for population, considering their unique characteristics compared with European populations. Our algorithm consists two steps: screening diagnosis. mandates using waist circumference and/or body mass index (BMI) based national standards, while involves “finger ring test” addition to Asian Sarcopenia 2019 criteria. final...

10.1111/ggi.14978 article EN cc-by Geriatrics and gerontology international/Geriatrics & gerontology international 2024-09-10

Previous studies have indicated that dynamic stretching acutely improves explosive performance, and is now incorporated into warm-up protocols prior to sports activities require performance. The optimal protocol for stretching, however, has not been clarified. purpose of this review clarify the velocity volume (i.e., repetition or distance x set) in improve performance by systematic investigation. For velocity, rate change when was performed "as fast as possible" (7.6 ± 3.8%) significantly...

10.7600/jpfsm.3.121 article EN The Journal of Physical Fitness and Sports Medicine 2014-01-01

Aim: Although previous studies have shown that consumption of green tea catechins (GTC) and walking might prevent development cardiovascular disease (CVD), the effects GTC supplementation on CVD risk in active older people are unknown. Methods: A total 52 adults (male/female 20/32, mean age 69.1 ± 5.9 years) participating a pedometer‐based program were randomly assigned to group with an intake 630.9 mg daily ( n = 26) or control for 14 weeks. Cardiovascular markers measured before after this...

10.1111/j.1447-0594.2012.00952.x article EN Geriatrics and gerontology international/Geriatrics & gerontology international 2012-10-05

Sarcopenia has never been diagnosed based on site-specific muscle loss, and little is known about the relationship between loss metabolic syndrome (MetS) risk factors. To this end, cross-sectional study aimed to investigate size MetS Subjects were 38 obese men women aged 40–82 years. Total body fat lean mass assessed by whole-body dual-energy X-ray absorptiometry (DXA) scan. Muscle thickness (MTH) was measured using B-mode ultrasound scanning in six regions. classified into general obesity...

10.1371/journal.pone.0143858 article EN cc-by PLoS ONE 2015-12-23
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