Hirotaka Ochiai

ORCID: 0000-0003-0450-0718
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About
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Research Areas
  • Obesity, Physical Activity, Diet
  • Liver Disease Diagnosis and Treatment
  • Alcohol Consumption and Health Effects
  • Eating Disorders and Behaviors
  • Birth, Development, and Health
  • Diabetes, Cardiovascular Risks, and Lipoproteins
  • Diet and metabolism studies
  • Musculoskeletal pain and rehabilitation
  • Cardiovascular Disease and Adiposity
  • Child Nutrition and Water Access
  • Gout, Hyperuricemia, Uric Acid
  • Nutritional Studies and Diet
  • Adipokines, Inflammation, and Metabolic Diseases
  • Obesity and Health Practices
  • Health and Lifestyle Studies
  • Diet, Metabolism, and Disease
  • Drug-Induced Adverse Reactions
  • Respiratory viral infections research
  • Coffee research and impacts
  • Urticaria and Related Conditions
  • Tryptophan and brain disorders
  • Hospital Admissions and Outcomes
  • Regulation of Appetite and Obesity
  • Adipose Tissue and Metabolism
  • Folate and B Vitamins Research

Showa University
2015-2024

Osaka City University
2007-2017

Chiba Cancer Center
2010

Okayama University
2005-2009

Although several studies have investigated the relationship between number of siblings or birth order and childhood overweight, results are inconsistent. In addition, little is known about impact having older younger on overweight among elementary schoolchildren. The present population-based study with evaluated schoolchildren in Japan. Subjects comprised fourth-grade (age, 9–10 years) Ina Town during 1999–2009. Information subjects’ sex, age, weight, order, siblings, lifestyle, parents’...

10.1186/1471-2458-12-766 article EN cc-by BMC Public Health 2012-09-11

Several studies have shown that normal weight with central obesity (NWCO) is associated cardiovascular disease risk factors such as hypertension, dyslipidemia and diabetes. However, the relationship between NWCO hyperuricemia has not been studied in detail.We investigated association among Japanese adults aged 40-64 years who had undergone periodic health examinations April 2013 March 2014. Obesity was defined a body mass index (BMI) ≥25 kg/m2 determined waist-to-height ratio (WHtR) ≥0.5. We...

10.1186/s12902-019-0481-1 article EN cc-by BMC Endocrine Disorders 2020-01-06

Several studies have shown that normal weight central obesity (NWCO) is associated with cardiovascular disease (CVD) risk factors. However, conducted in the Japanese population been very limited. Thus, relationships between obesity, classified using body mass index (BMI), waist-to-height ratio (WHtR), and CVD factors middle-aged adults were investigated.The participants aged 40-64 years who had undergone periodic health examinations Japan during period from April 2013 to March 2014. The...

10.1186/s41043-019-0201-5 article EN cc-by Journal of Health Population and Nutrition 2019-12-01

Although the correlation coefficient between body mass index (BMI) and percent fat (%BF) or waist circumference (WC) has been reported, studies conducted among population-based schoolchildren to date have limited in Japan, where %BF WC are not usually measured annual health examinations at elementary schools junior high schools. The aim of present study was investigate relationship BMI examine influence gender obesity on these relationships Japanese schoolchildren.Subjects included 3,750...

10.1186/1471-2458-10-493 article EN cc-by BMC Public Health 2010-08-18

Mitochondrial DNA 5178 cytosine/adenosine (Mt5178 C/A) polymorphism is associated with longevity in the Japanese. The purpose of this study to investigate whether Mt5178 C/A modifies effects habitual smoking or drinking on serum non-high-density lipoprotein (non-HDL) cholesterol levels middle-aged Japanese men. A total 394 male subjects (age 53.9 ± 7.9 years; mean SD) were selected from among individuals visiting hospital for regular medical check-ups. After genotyping, a cross-sectional...

10.1186/1880-6805-33-1 article EN cc-by Journal of PHYSIOLOGICAL ANTHROPOLOGY 2014-01-02

We investigated the prevalence and trends of underweight overweight/obesity in a population-based sample Japanese schoolchildren from 2003 to 2012, defined by body mass index (BMI) percentage overweight (POW).Subjects comprised fourth seventh graders town Ina, Japan, 2012. The height weight each subject were measured. Children classified as underweight, normal weight, or overweight/obese using two criteria: BMI cutoff points proposed International Obesity Task Force cutoffs based on POW...

10.2188/jea.je20140144 article EN cc-by Journal of Epidemiology 2015-01-01

Alanine aminotransferase (ALT) and aspartate (AST) to ALT ratio (AST/ALT ratio) have been shown be related non-alcoholic fatty liver disease or insulin resistance, which was associated with chronic kidney (CKD). However, it is unclear whether AST/ALT are CKD. In this study, we examined the relationship of CKD among middle-aged females in Japan.The present study included 29,133 women aged 40 64 years who had an annual health checkup Japan during April 2013 March 2014. Venous blood samples...

10.1186/s12882-020-02144-6 article EN cc-by BMC Nephrology 2020-11-10

This study examined deaths due to unintentional injuries among children in Japan identify the age groups and sexes at most risk, types of injuries, so that effective forms targeted intervention can be devised. Among aged 0-14 years, whose underlying causes had been classified under code V01-X59 ICD-10 were defined as caused by injuries. Using data from Vital Statistics 2000-2009 for analysis, we changes mortality trends terms sex, age, cause death. Mortality decreased 46.2%, 933 2000 502...

10.3390/ijerph10020528 article EN International Journal of Environmental Research and Public Health 2013-01-30

Distorted body image plays a significant role in the development of obesity, eating problems, and disorders. The aim this study was to investigate relationship between distorted lifestyle among Japanese adolescent boys girls.Subjects were 1731 seventh graders (age 12-13 years) from Ina-town's junior high schools, Japan, 2005-2009. height weight each subject measured. Childhood underweight, overweight, obesity defined using mass index cutoff points proposed by International Obesity Task...

10.1186/s13690-015-0082-z article EN cc-by Archives of Public Health 2015-06-11

There are a limited number of studies regarding the association between abdominal obesity and serum adiponectin complexes (high, medium, low molecular weight adiponectins) among population-based elementary school children, especially in Japan, where blood collection is not usually performed during annual health examinations children. The aim present study was to investigate relationship children Japan. Subjects were all fourth-grade (9 or 10 years age) town Ina 2005–2008 (N = 1675). height,...

10.1186/1471-2431-14-81 article EN cc-by BMC Pediatrics 2014-03-26

The thyroid hormones have been reported to be associated with cognitive decline and Alzheimer's disease. relationship between function within the normal range cerebral blood flow in disease patients has shown a recent study. Mild impairment is often first stage of disease; thus, early diagnosis important. present study investigated regional mild A total 122 memory clinic outpatients who underwent testing single photon emission computed tomography were divided into impairment, disease, Normal...

10.1371/journal.pone.0214676 article EN cc-by PLoS ONE 2019-04-03

Although the prevalences of obesity and hypertension (HT) are increasing in children, there have been few epidemiological studies HT Japanese children. We evaluated high-normal blood pressure (HNBP), examined relationship between (BP) body mass index (BMI), children.The subjects this study were 2420 children living town Ina, Saitama Prefecture, Japan during period from 2006 through 2008. Body height, weight, BP measured. HNBP defined according to criteria for Children with or as having high...

10.2188/jea.je20090207 article EN cc-by Journal of Epidemiology 2010-01-01

Background: Because most studies about the relationship between eating quickly and overweight/obesity have been cross-sectional, it is necessary to investigate prospectively influence of on anthropometric variables in order examine causal relationship. The aim present study was impact among schoolgirls a prospective cohort study. Methods: We investigated 427 non-overweight/obese from fourth grade (aged 9 or 10 years) Ina-town, Japan 2004 2006. Physical examinations questionnaire survey were...

10.1093/eurpub/ckt120 article EN European Journal of Public Health 2013-08-27

Abnormal lipid levels have been suggested as a mechanism leading to atherosclerosis of the lumbar vessels, resulting in low back pain (LBP). This study examined whether abnormal were associated with LBP among middle-aged adults Japan.The present included between 40 and 64 years old who underwent an annual health checkup. A total 258,367 eligible participants analyzed investigate associations low-density lipoprotein cholesterol (LDL-C), high-density (HDL-C), LDL-C/HDL-C ratio. Participants...

10.1186/s12944-018-0907-1 article EN cc-by Lipids in Health and Disease 2018-11-24

Central obesity, based on waist circumference (WC), has more adverse effects health than general determined by body mass index. To date, eating quickly been reported to be risk factors for overweight/obesity among children, adolescents, and adults. In contrast, there are few studies the relationship between fast central obesity particularly in Japan, where WC is not commonly measured junior high schools. The aim of present study was investigate waist-to-height ratio (WHtR), an index...

10.1186/s13690-016-0130-3 article EN cc-by Archives of Public Health 2016-04-19

Background: Monitoring secular trends in blood pressure (BP) among children is important predicting subsequent hypertension and cardiovascular disease. We investigated BP using data from population-based annual screenings of Japanese schoolchildren.Methods: The participants were 10 894 (all fourth graders between 1994 2010 all seventh 1997 2010) living the town Ina Saitama Prefecture, Japan. Body height, weight, measured, after which classified as non-overweight, overweight, or obese. Trends...

10.2188/jea.je20110137 article EN cc-by Journal of Epidemiology 2012-01-01

Objectives . The aim of the present study was to investigate relationship between eating behaviors and overweight among population-based adolescents in Japan. Methods Study subjects comprised seventh grade (age range, 12–13 years) from Ina, a town Saitama Prefecture, Japan, 1999 2008. height weight were measured, information concerning (eating speed until full) obtained using self-administered questionnaire. Results Among boys (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"...

10.1155/2013/717942 article EN cc-by Journal of Obesity 2013-01-01

Because underweight in adolescents poses several health problems, it is important to prevent adolescence. For the prevention of underweight, necessary investigate risk factors, especially lifestyles, because these can be modified. However, a limited number studies exist regarding lifestyle factors associated with among adolescents. The present study aimed relationship between and Japanese adolescents.Study subjects comprised 2641 seventh-grade school children (age 12 or 13 years) from town...

10.1186/s13690-017-0213-9 article EN cc-by Archives of Public Health 2017-07-12

Although some recent studies have indicated an association between metabolic syndrome (MetS) and musculoskeletal disease, little is known about the of MetS with low back pain (LBP). The present study aimed to investigate sex differences in clustering components LBP among middle-aged Japanese individuals. Study subjects were 45,192 adults (30,695 men, 14,497 women) aged 40–64 years who underwent annual health checkups conducted from April 2013 March 2014. was defined according criteria...

10.1186/s13293-019-0249-3 article EN cc-by Biology of Sex Differences 2019-07-05

A decrease in work productivity due to presenteeism among healthcare workers with low back pain (LBP) is a major problem the workplace. It important determine factors associated successfully manage nursing staff LBP. This study aimed identify personnel LBP through evaluation of several aspects, including individual, occupational, and psychological factors.We conducted cross-sectional 668 who had experienced within 4 weeks before enrollment at tertiary hospital Japan. Information on...

10.2147/jpr.s269529 article EN cc-by-nc Journal of Pain Research 2020-11-01

The purposes of this study were to evaluate the mental health status Japanese medical students and examine differences based on gender, as well university type location, using results a nationwide survey. Between December 2006 March 2007, we conducted questionnaire survey among fourth-year at 20 randomly selected schools in Japan. data from 1,619 (response rate: 90.6%; male: 1,074; female: 545) analyzed. We used version 12-item General Health Questionnaire (GHQ-12) measure status. Poor...

10.18926/amo/53022 article EN PubMed 2014-12-01
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