Publications by authors named "Naofumi Yamamoto"

Background: Constipation is a very common medical issue among the general population worldwide. However, the association between exercise habits and constipation is still not fully understood. Additionally, no evidence regarding the association between exercise partners and constipation exists.

View Article and Find Full Text PDF

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

View Article and Find Full Text PDF

Background/aims: 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 the presence of multiple allergic diseases further increases the prevalence of FD and IBS. The aim of this study is to determine this issue in young people.

Methods: A cohort of 8923 Japanese university students was enrolled and diagnoses of FD and IBS were confirmed using Rome III criteria.

View Article and Find Full Text PDF

Background: This cohort study aimed to examine the relationship between objectively measured daily ambulatory activity (AA) variables and the onset of metabolic syndrome (MetS) in middle-aged and older Japanese individuals.

Methods: A total of 1,034 participants (women, 76.8%; mean age, 56.

View Article and Find Full Text PDF

Background: This cross-sectional study aimed to identify the accumulation patterns of objectively measured ambulatory activity (AA) variables in the Japanese middle-aged and elderly individuals and examine the relationship of these derivative patterns with metabolic syndrome (MetS).

Methods: A total of 1850 participants (66.1% women, mean age: 57.

View Article and Find Full Text PDF

Introduction: There is evidence regarding the association between dysmenorrhea and irritable bowel syndrome (IBS), although it is lacking in the Asian population. Therefore, the purpose of this study was to investigate the association between menstrual status and IBS in a young Japanese.

Methods: Overall, 4,693 female college students were included in the analysis of this study.

View Article and Find Full Text PDF

Age-related changes in physical function are closely associated with daily activity impairment among the elderly. Continuous maslinic acid intake may improve skeletal muscle mass; however, the concentration-dependent benefits of maslinic acid for physical functionality remain unclear. Therefore, we evaluated the bioavailability of maslinic acid and examined the effect of maslinic acid intake on skeletal muscle and quality of life in the healthy Japanese elderly.

View Article and Find Full Text PDF
Article Synopsis
  • - The study investigated the link between exercise habits and the prevalence of irritable bowel syndrome (IBS) among 8,923 Japanese university students, focusing on the effects of exercise frequency, intensity, and having an exercise partner.
  • - Results showed that moderate and high levels of exercise were associated with lower odds of IBS, and exercising in groups or with friends further reduced these odds.
  • - The findings suggest that both the amount and intensity of exercise, as well as exercising with others, may help in preventing IBS in young adults.
View Article and Find Full Text PDF

Purpose: The association between body mass index (BMI) and irritable bowel syndrome (IBS) has been inconsistent in the Asian population. Also, no evidence regarding this issue in the young population exists. The aim of the present study is to investigate the association between BMI and IBS based on the Rome III criteria in young Japanese people.

View Article and Find Full Text PDF

Research has demonstrated the disproportionate quality of care for women with cardiovascular disease. These findings have prompted a renewed focus on cardiovascular disease awareness and disease prevention in women. Spontaneous coronary artery dissection (SCAD) is a significant cause of myocardial infarction (MI) and sudden death that primarily affects women.

View Article and Find Full Text PDF

Background: Relative age effect is defined as a phenomenon where children born early generally perform better than children born later in the same cohort. Physical activity is an important factor that might be influenced by the relative age effect. Socioeconomic factors (e.

View Article and Find Full Text PDF

Background/aims: Functional dyspepsia (FD) may be a common digestive disease worldwide and reduces the quality of life of patients. However, only a few studies have investigated the association between eating behavior and FD. The purpose of this cross-sectional study is to examine the association between eating behavior and prevalence of FD in a young Japanese cohort.

View Article and Find Full Text PDF

Unlabelled: The potential health benefits of laughter are recognized in relation to several chronic diseases. However, no study has yet investigated the association between laughter and functional dyspepsia (FD). The purpose of this study was to investigate this issue in a young Japanese population.

View Article and Find Full Text PDF

Background/aims: Evidence regarding the association between body mass index (BMI) and functional dyspepsia (FD) in the Asian population is limited. Further, no study has evaluated this issue in young people in Asian and Western populations. Thus, we aim to investigate this issue among young Japanese people.

View Article and Find Full Text PDF

Background: Although 10 000 steps per day is widely promoted to have health benefits, there is little evidence to support this recommendation. We aimed to determine the association between number of steps per day and stepping rate with all-cause mortality.

Methods: In this meta-analysis, we identified studies investigating the effect of daily step count on all-cause mortality in adults (aged ≥18 years), via a previously published systematic review and expert knowledge of the field.

View Article and Find Full Text PDF

Background: Functional dyspepsia (FD) is a very common disease worldwide. Dysmenorrhea impairs quality of life among females of reproductive age. Although dysmenorrhea is associated with irritable bowel syndrome (IBS), no study has yet evaluated the association between dysmenorrhea and FD.

View Article and Find Full Text PDF

This study examined the relationship between neighborhood food and physical activity environment, and obesity among elementary and junior high school students in Japan. The participants were fifth- to ninth-grade children (n=7277), who were attending municipal schools in Japan. Percent overweight (POW) was calculated using their age, gender, height, and weight, which were collected through a questionnaire.

View Article and Find Full Text PDF

Background: Evidence regarding the association between sleep disturbance and functional dyspepsia (FD) remains limited in the young population.

Aims: This study aimed to investigate the association between sleep disturbance and FD including subgroups among Japanese young people.

Methods: Study subjects were 8923 university students.

View Article and Find Full Text PDF

Background: Functional dyspepsia (FD) has a high prevalence worldwide and reduces patients' quality of life. The etiology of FD is likely multifactorial. Although two studies showed an inverse association between exercise habits and FD, evidence regarding the association between exercise habits and FD remains scarce.

View Article and Find Full Text PDF

The current focus of meeting the physical activity guidelines for children and young people include preventing conditions such as high blood cholesterol, high blood pressure, metabolic syndrome, obesity, low bone density, depression, and injuries. However, the relationship between sleep habits and meeting physical activity guidelines is still unclear. This study aimed to assess this relationship among fifth- to eighth-grade (ages 10-14) Japanese children.

View Article and Find Full Text PDF

Aims: In this study, the effects of licorice flavonoid oil (LFO) supplementation on mobility functions were evaluated in middle-aged and older women who underwent daily physical exercise.

Methods: The 73 women aged 59-85 years (71.2 ± 5.

View Article and Find Full Text PDF

[Purpose] This study aimed to cross-sectionally examine the relationship between the practice of muscle-strengthening activities assessed according to Japanese and foreign physical activity guidelines and knee extensor strength in the elderly. [Participants and Methods] Overall, 223 (66 males and 157 females) participants aged ≥60 years were included. The questionnaire included four items on muscle-strengthening activities: undergoing strength training, performing vigorous farming and gardening, carrying heavy loads, and climbing stairs and hills.

View Article and Find Full Text PDF

Background: This study aimed to examine the relationship between pedometer-assessed daily step count and all-cause mortality in a sample of elderly Japanese people.

Methods: Participants included 419 (228 males and 191 females) physically independent, community-dwelling 71-year-old Japanese people. The number of steps per day was measured by a waist-mounted pedometer for seven consecutive days at baseline.

View Article and Find Full Text PDF

Background: Tracking refers to the tendency for an individual to maintain their rank within a group over time. This study longitudinally investigated the 8-year tracking of pedometer-determined physical activity among physically independent elderly Japanese people aged 72 to 80 years.

Methods: Steps/day were measured when participants were aged 72 and assessed again after 2, 5, and 8 years.

View Article and Find Full Text PDF

Massive orofacial hemorrhage mostly occurs in younger individuals unilaterally and is associated with extensive LeFort fractures. Here we describe a 91-year-old man who sustained a life-threatening hemorrhage of the bilateral internal maxillary artery (IMA) system with a comminuted LeFort I fracture caused by a road traffic accident while he was driving. His injury severity score was high (34), but no severe brain injury was sustained.

View Article and Find Full Text PDF