Naofumi Yamamoto

ORCID: 0000-0003-4702-3624
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About
Contact & Profiles
Research Areas
  • Physical Activity and Health
  • Obesity, Physical Activity, Diet
  • Gastrointestinal motility and disorders
  • Sports Performance and Training
  • Physical Education and Training Studies
  • Boron Compounds in Chemistry
  • Liver Disease Diagnosis and Treatment
  • Clinical Nutrition and Gastroenterology
  • Music Therapy and Health
  • Urban Transport and Accessibility
  • Dental Radiography and Imaging
  • Sleep and related disorders
  • Temporomandibular Joint Disorders
  • Gastroesophageal reflux and treatments
  • Nutrition and Health in Aging
  • Facial Trauma and Fracture Management
  • Electrolyte and hormonal disorders
  • Menstrual Health and Disorders
  • Neuroinflammation and Neurodegeneration Mechanisms
  • Radiopharmaceutical Chemistry and Applications
  • Cardiovascular Issues in Pregnancy
  • Pharmacological Effects of Natural Compounds
  • Cardiovascular and exercise physiology
  • Diet and metabolism studies
  • Helicobacter pylori-related gastroenterology studies

Ehime University
1994-2025

Memorial Hospital
2025

Western University of Health Sciences
2022

Osaka Medical and Pharmaceutical University
2020-2021

Tokai University
2020

Matsuyama University
2017-2018

Wakayama University
2017

Saiseikaisenri Hospital
2014-2017

National Institute of Infectious Diseases
2016

Chiba Prefectural University of Health Sciences
2015-2016

This study aimed to examine the relationship between pedometer-assessed daily step count and all-cause mortality in a sample of elderly Japanese people. Participants included 419 (228 males 191 females) physically independent, community-dwelling 71-year-old The number steps per day was measured by waist-mounted pedometer for seven consecutive days at baseline. were divided into quartiles based on their average steps/day (first quartile, < 4503 steps/day; second 4503–6110 third 6111–7971...

10.1186/s12889-018-5434-5 article EN cc-by BMC Public Health 2018-04-23

Although certain allergic diseases have been reported to be associated with the prevalence of functional dyspepsia (FD) and irritable bowel syndrome (IBS), it is unclear whether presence multiple further increases FD IBS. The aim this study determine issue in young people.

10.5056/jnm23015 article EN Journal of Neurogastroenterology and Motility 2024-04-05

Eur J Clin Invest 2011; 41 (5): 465–473 Abstract Background We evaluated the relationship between glucose fluctuation and vascular endothelial function. Material methods recruited 25 healthy individuals with no family history of diabetes (14 subjects 11 controls). Brachial artery flow-mediated dilation (FMD) elapsed time when after-hyperaemia maximum brachial diameter is reached; peak times (PT) each study subject were measured before at 60, 120, 180 min after 75-g oral loading. FMD PT...

10.1111/j.1365-2362.2010.02424.x article EN European Journal of Clinical Investigation 2010-12-03

This cohort study aimed to identify the accumulation patterns of objectively measured ambulatory activity (AA) variables in middle-aged and older Japanese women examine relationship these derivative with onset metabolic syndrome (MetS). A total 794 (mean age: 56.2 years) provided assessed AA data using a uniaxial accelerometer. The number steps, time accumulated light-intensity (LIAA) moderate-to-vigorous intensity (MVAA) ratio MVAA (LIAA + MVAA) were calculated. Latent profile analysis was...

10.1265/ehpm.24-00313 article EN cc-by Environmental Health and Preventive Medicine 2025-01-01

The natural forces of the lunar cycle and seasonal solstice variation on water surfaces have been studied extensively but not patients with fluid problems such as heart failure (HF). This retrospective review investigates these temporal effects admission rates length stay. In this study, we try to answer following questions: Do moon cycles (full vs new moon) significantly affect number admitted? patient’s hospital stay (LOS?). All HF exacerbation between January 1, 2016 December 31, 2019,...

10.1097/md.0000000000041614 article EN cc-by-nc Medicine 2025-02-28

This cross-sectional study aimed to identify the accumulation patterns of objectively measured ambulatory activity (AA) variables in Japanese middle-aged and elderly individuals examine relationship these derivative with metabolic syndrome (MetS).A total 1850 participants (66.1% women, mean age: 57.7 years) provided assessed AA data using a uniaxial accelerometer. The number steps, time accumulated light-intensity (LIAA) moderate-to-vigorous intensity (MVAA), ratio MVAA (LIAA + MVAA) were...

10.1265/ehpm.23-00110 article EN cc-by Environmental Health and Preventive Medicine 2023-01-01

The current focus of meeting the physical activity guidelines for children and young people include preventing conditions such as high blood cholesterol, pressure, metabolic syndrome, obesity, low bone density, depression, injuries. However, relationship between sleep habits is still unclear. This study aimed to assess this among fifth- eighth-grade (ages 10–14) Japanese children. cross-sectional included 3,123 (boys: 1,558, girls: 1,565, mean age: 12.5 ± 1.2 years). Questionnaires were used...

10.1371/journal.pone.0242517 article EN cc-by PLoS ONE 2020-11-13

Objective: This study examined the relationship between neighborhood food and physical activity environment, obesity among elementary junior high school students in Japan. Methods: The participants were fifth- to ninth-grade children (n=7277), who attending municipal schools Percent overweight (POW) was calculated using their age, gender, height, weight, which collected through a questionnaire. A POW of &lt; 20% considered non-obese, while ≥ obese. Furthermore, geographic information system,...

10.1177/00469580211055626 article EN cc-by-nc INQUIRY The Journal of Health Care Organization Provision and Financing 2021-01-01

Evidence regarding the association between body mass index (BMI) and functional dyspepsia (FD) in Asian population is limited. Further, no study has evaluated this issue young people Western populations. Thus, we aim to investigate among Japanese people.The subjects comprised of 8923 university students. BMI was divided into 4 categories (quartiles) on basis subjects' distribution (lowest, low, moderate, high [reference]). The definition lean, normal, overweight, obese < 18.5 kg/m2, ≤ 25...

10.5056/jnm21076 article EN Journal of Neurogastroenterology and Motility 2022-04-01

Functional dyspepsia (FD) may be a common digestive disease worldwide and reduces the quality of life patients. However, only few studies have investigated association between eating behavior FD. The purpose this cross-sectional study is to examine prevalence FD in young Japanese cohort.In study, we enrolled 8923 university students. diagnosed based on Rome III criteria. Eating habits frequency meals were using self-administered questionnaire.The subjects had younger mean age, lower body...

10.5056/jnm21146 article EN Journal of Neurogastroenterology and Motility 2022-07-08

Few studies have shown that relatively younger children and adolescents (those born later in the same school year) were less likely to engage physical activity a phenomenon termed relative age effect. Although these mainly targeted elementary middle students, no study has reported on effect ordinary high students. Moreover, sedentary behavior might show an opposite association with activity. Therefore, we aimed clarify effects across different stages Japanese adolescents.

10.1186/s12889-024-20659-7 article EN cc-by-nc-nd BMC Public Health 2024-11-25

Tracking refers to the tendency for an individual maintain their rank within a group over time. This study longitudinally investigated 8-year tracking of pedometer-determined physical activity among physically independent elderly Japanese people aged 72 80 years.Steps/day were measured when participants and assessed again after 2, 5, 8 years. The number with 2-year follow-up (72 74 years) was 177 (101 males, 76 females), 5-year 77 183 (110 73 145 (91 54 females). Step counts continuously 1...

10.1123/jpah.2014-0450 article EN Journal of Physical Activity and Health 2015-01-19

Evidence regarding the association between exercise habits and irritable bowel syndrome (IBS) remains scarce in a young population. It is also unknown whether existence of an partner affects this issue. The purpose study was to explore that include IBS Japanese population.This enrolled 8923 university students examined frequency intensity, partners using self-administered questionnaires. functional dyspepsia were defined according Rome III criteria.The prevalence survey 6.5%. Moderate...

10.1097/meg.0000000000002561 article EN European Journal of Gastroenterology & Hepatology 2023-04-15

There is evidence regarding the association between dysmenorrhea and irritable bowel syndrome (IBS), although it lacking in Asian population. Therefore, purpose of this study was to investigate menstrual status IBS a young Japanese.Overall, 4,693 female college students were included analysis study. Information lifestyle habits, (irregularity, pain severity, medication), (Rome III criteria) obtained using self-reported questionnaire. Age, body mass index, exercise smoking, drinking anemia...

10.1159/000533264 article EN Digestive Diseases 2023-01-01

Purpose: To clarify the role of p53 in boron neutron capture therapy (BNCT) for oral squamous cell carcinoma (SCC), effect BNCT on SCC xenografts with either wild-type or mutant-type was examined.Materials and methods: Oral cells expressing (SAS/neo) (SAS/mp53) were used to produce nude mouse tumours. Tumour-bearing mice received boronophenylalanine (BPA) at a dose 250 mg/kg tumours exposed irradiation.Results: After BNCT, growth SAS/neo SAS/mp53 suppressed remarkably all became undetectable...

10.3109/09553002.2011.530336 article EN International Journal of Radiation Biology 2010-12-10

Abstract Background Functional dyspepsia (FD) is a very common disease worldwide. Dysmenorrhea impairs quality of life among females reproductive age. Although dysmenorrhea associated with irritable bowel syndrome (IBS), no study has yet evaluated the association between and FD. Methods This study's subjects consisted 4693 female Japanese university students. We defined FD according to Rome III criteria. Subjects completed self‐reported questionnaire regarding menstrual irregularity, pain,...

10.1111/nmo.14324 article EN Neurogastroenterology & Motility 2022-01-19

Abstract Background Relative age effect is defined as a phenomenon where children born early generally perform better than later in the same cohort. Physical activity an important factor that might be influenced by relative effect. Socioeconomic factors (e.g., parent’s income, education level) are also associated with adolescent’s physical activity. However, no existing study has examined whether socioeconomic moderate on This aims to clarify and how birth month relate organized sports among...

10.1186/s12889-022-14052-5 article EN cc-by BMC Public Health 2022-09-01
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