Kentaro Murakami
Dados Biográficos
| ID | 5482760 |
|---|---|
| NOME | Kentaro Murakami |
| PRENOMES | Kentaro |
| SOBRENOME | Murakami |
| ASSINATURA | MURAKAMI K |
| AFILIAÇÕES | The University of Tokyo |
| ORCID | 0000-0002-4189-7753 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 30 |
| TOTAL DE CITAÇÕES | 3 |
| TOTAL COMO AUTOR | 30 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2007 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2025 |
| ÍNDICE H | 1 |
Is the hand scale an appropriate tool for guiding and estimating food portions? An evaluation among free-living adults
The hand scale, which uses the number of hands (e.g., fists and palms) to estimate portion size, is widely used in practice. However, evidence regarding its appropriateness in free-living settings is limited. This study aimed to examine the relationship between actual food consumption (g/meal) and the self-reported number of hands used for estimating portion size and to develop and evaluate models for estimating food consumption per meal based on…
Food literacy and eating motivation in relation to diet quality and general and abdominal obesity
This cross-sectional study aimed to investigate the associations of food literacy and eating motivation with diet quality and obesity. Participants were 1055 Japanese adults aged 20–69 years. The self-perceived food literacy scale was used to assess food literacy (food preparation skills, resilience and resistance, healthy snack styles, social and conscious eating, examining food labels, daily food planning, healthy budgeting, and healthy food st…
Misinformation surrounding sodium reduction for blood pressure
This content analysis aimed to assess misinformation themes regarding sodium reduction and blood pressure on X with the goal of providing strategies to address and debunk such misinformation. A total of 531 posts were manually coded into sodium-related misinformation themes, with inclusion criteria for posts asserting no association between sodium reduction and hypertension or claiming consuming sodium is beneficial for health. Numbers and post f…
Self-perceived food literacy in relation to the quality of overall diet and main meals
This cross-sectional study aimed to assess the relationship between self-perceived food literacy (SPFL) and quality of overall diet and main meals in Japanese adults. In total, 5998 adults aged 20-79 years were included in this analysis. The SPFL was assessed using the Japanese version of the 29-item Dutch SPFL scale (score range 1-5). Using validated dietary information, the Healthy Eating Index-2015 (HEI-2015) was calculated (score range 0-100)…
Consumption of highly processed foods in relation to overall diet quality among Japanese adults
Objective: To (i) examine the consumption of highly processed foods (HPF) in relation to diet quality among Japanese adults and (ii) compare the results when dishes prepared away home are disaggregated into food ingredients before classification by processing levels and the results when they are not. Design: Cross-sectional analysis using 4-day dietary record data. Foods were categorised by level of processing using the framework developed by the…
Are popular books about diet and health written based on scientific evidence? A comparison of citations between the USA and Japan
Objectives: To describe and compare the references cited in popular books about diet and health between the USA and Japan. Design: Books were selected based on their best-seller rankings in the diet and health category of online bookstores. We identified references throughout all pages of the books and examined the number of references, reference format (identifiable or not) and presence of specific types of references, such as systematic reviews…
Temporal patterns of sleep and eating among children during school closure in Japan due to Covid-19 pandemic
Objective: To identify temporal patterns of sleep and eating among school-age children during school closure due to the COVID-19 pandemic and to examine their associations with lifestyle behaviours and dietary intake. Design: In this cross-sectional study, questionnaires were used to assess sleep and eating times, lifestyle behaviours and dietary intake during school closure. Latent class analysis was performed to identify temporal patterns of sl…
Characterisation of breakfast, lunch, dinner and snacks in the Japanese context
Objective: To characterise different meal types by examining the contribution of specific meals to the total intakes and the nutritional quality of each meal. Design: A cross-sectional analysis was conducted based on dietary data collected using 4-d dietary record. Diet quality was assessed by the Healthy Eating Index-2015 and Nutrient-Rich Food Index 9.3. Setting: Japan. Participants: Adults aged 20–81 years ( n 639). Results: Diet quality was, …
Eating patterns in a nationwide sample of Japanese aged 1–79 years from Minnade study
Objective: Although there is growing evidence suggesting that eating patterns are important determinants of health status, comprehensive information on patterning of eating behaviours is almost lacking. The aim of this cross-sectional study was to describe eating patterns in Japan. Design: Information on actual eating behaviours was collected using 2-d dietary record in each season over a year (total 8 d). Eating occasions were defined as any dis…
Snacking in Japanese nursery school children aged 3–6 years
Objective: This cross-sectional study evaluated the dietary characteristics of snacks, the contribution of snacks to daily nutrient intake and the association of energy intake (EI) from snacks with the prevalence of nutritional inadequacy in Japanese nursery school children. Design: Foods and nutrients consumed in each eating occasion were assessed by 3-d dietary records. The prevalence of inadequate intake of twenty nutrients assessed by the age…
Development, validation and utilisation of dish-based dietary assessment tools
Objective: To summarise the existing evidence of development, validation and current status of utilisation of dish-based dietary assessment tools. Design: Scoping review. Setting: Systematic search using PubMed and Web of Science. Results: We identified twelve tools from seventy-four eligible publications. They were developed for Koreans ( n 4), Bangladeshis ( n 2), Iranians ( n 1), Indians/Malays/Chinese ( n 1), Japanese ( n 3) and Chinese Ameri…
A longer time spent at childcare is associated with lower diet quality among children aged 5–6 years, but not those aged 1.5–2 and 3–4 years
This study showed that long time spent at childcare was strongly associated with low diet quality among children aged 5-6 years, but not those aged 1·5-2 and 3-4 years. More research is needed to clarify different associations in each age group
Validity of a dish composition database for estimating protein, sodium and potassium intakes against 24 h urinary excretion
Objective: We assessed the validity of a recently developed dish composition database (DCD) against urinary biomarkers compared with a standard food composition database (FCD). Design: Intakes of protein, Na and K were estimated by 2 × 24 h urine collections and by 4 d dietary record data based on the DCD (including 128 dishes) or FCD (including 1878 foods). Setting: Japan. Participants: A total of 161 men and 163 women aged 20–69 years. Results:…
Development and simulated validation of a dish composition database for estimating food group and nutrient intakes in Japan
Objective: To develop a dish composition database (DCD) and assess its ability to estimate dietary intake. Design: The DCD was developed based on 16 d dietary records (DR). We aggregated all reported dishes into 128 dish codes and calculated mean food group and nutrient contents for each code. These data were used to calculate dietary intake in a different population that completed a 4 d DR. The estimated values were compared with those estimated…
A Japanese diet with low glycaemic index and glycaemic load is associated with both favourable and unfavourable aspects of dietary intake patterns in three generations of women
Objective Western studies have suggested cultural differences in food and nutrient intake patterns associated with dietary glycaemic index (GI) and glycaemic load (GL). Here, we conducted a cross-sectional study to examine the GI and GL of Japanese diets in relation to food and nutrient intakes. Design Dietary intake was assessed using a validated, self-administered, diet history questionnaire. Setting A total of thirty-five of forty-seven prefec…
Associations between meal and snack frequency and diet quality and adiposity measures in British adults
Objective To examine how different definitions of meals and snacks can affect the associations of meal frequency (MF) and snack frequency (SF) with dietary intake and adiposity measures. Design Based on 7 d weighed dietary record data, all eating occasions providing ≥210 kJ of energy were divided into meals or snacks based on contribution to energy intake (≥15 % or Setting Great Britain. Subjects British adults aged 19–64 years ( n 1487). Results…
Meal and snack frequency in relation to diet quality in US children and adolescents
Objective To examine the associations of meal frequency (MF) and snack frequency (SF) with diet quality. Design Dietary intake was assessed using two 24 h dietary recalls. All eating occasions providing ≥210 kJ of energy were divided into meals or snacks on the basis of contribution to energy intake (≥15 % or Setting Nationally representative sample of the US population. Subjects Children aged 6–11 years ( n 4269) and adolescents aged 12–19 years…
Monetary value of self-reported diets and associations with sociodemographic characteristics and dietary intake among Japanese adults
Objective To examine the relationships of monetary value of diets with sociodemographic and lifestyle characteristics and dietary intake among Japanese adults. Design Cross-sectional study based on two nationally representative surveys: the Comprehensive Survey of Living Conditions and the National Health and Nutrition Survey, 2013. Dietary intake was assessed by a 1 d semi-weighed household dietary record with information on individual proportio…
Within- and Between-Individual Variation in Energy and Nutrient Intake in Japanese Adults
In a group of Japanese adults, coefficients of within-individual variation and between-individual variation, which were used to estimate the group size and number of records required for adequate dietary assessment, differed by age, sex, and nutrient.
Dietary patterns in infancy and their associations with maternal socio‐economic and lifestyle factors among 758 Japanese mother–child pairs
Dietary habits established in early childhood contribute to lifelong dietary pattern and the development of early risk factors for disease in adulthood. Although a large body of epidemiologic data from Western countries show that the dietary pattern of children is influenced by maternal socio-economic and lifestyle characteristics, information on this topic in non-Western countries is absolutely lacking. The present study identified dietary patte…
Nutritional adequacy of three dietary patterns defined by cluster analysis in 997 pregnant Japanese women
Objective To examine the adequacy and inadequacy of dietary patterns in pregnant women for which information is absolutely lacking. Design Diet was assessed by a validated, self-administered diet history questionnaire (DHQ). Dietary patterns were extracted from the intake of thirty-three food groups (g/4184 kJ (1000 kcal)), which were summarized from 147 foods assessed with the DHQ, by cluster analysis. Nutritional inadequacy for selected twenty …
Comparison of relative validity of food group intakes estimated by comprehensive and brief-type self-administered diet history questionnaires against 16 d dietary records in Japanese adults
Objective To compare the relative validity of food group intakes derived from a comprehensive self-administered diet history questionnaire (DHQ) and a brief-type DHQ (BDHQ) developed for the assessment of Japanese diets during the previous month using semi-weighed dietary records (DR) as a reference method. Design Between November 2002 and September 2003, a 4 d DR (covering four non-consecutive days), a DHQ (150-item semi-quantitative questionnai…
Dietary Folate, Riboflavin, Vitamin B-6, and Vitamin B-12 and Depressive Symptoms in Early Adolescence
OBJECTIVE: To examine the association between dietary folate, riboflavin, vitamin B-6, and vitamin B-12 and depressive symptoms in a group of adolescents. METHODS: This cross-sectional study, conducted in all public junior high schools in Naha City and Nago City, Okinawa, Japan, included 3,067 boys and 3,450 girls aged 12 years to 15 years (52.3% of eligible sample). Dietary intake was assessed using a validated, self-administered diet history qu…
Relative validity of dietary patterns derived from a self-administered diet history questionnaire using factor analysis among Japanese adults
Objective Although dietary pattern approaches derived from dietary assessment questionnaires are widely used, only a few studies in Western countries have reported the validity of this approach. We examined the relative validity of dietary patterns derived from a self-administered diet history questionnaire (DHQ) among Japanese adults. Design The DHQ, assessing diet during the preceding month, and 4 d dietary records (DR) were collected in each s…
Estimation of caffeine intake in Japanese adults using 16 d weighed diet records based on a food composition database newly developed for Japanese populations
Objective Previous studies in Western populations have linked caffeine intake with health status. While detailed dietary assessment studies in these populations have shown that the main contributors to caffeine intake are coffee and tea, the wide consumption of Japanese and Chinese teas in Japan suggests that sources of intake in Japan may differ from those in Western populations. Among these teas, moreover, caffeine content varies widely among t…
Food literacy and eating motivation in relation to diet quality and general and abdominal obesity
This cross-sectional study aimed to investigate the associations of food literacy and eating motivation with diet quality and obesity. Participants were 1055 Japanese adults aged 20–69 years. The self-perceived food literacy scale was used to assess food literacy (food preparation skills, resilience and resistance, healthy snack styles, social and conscious eating, examining food labels, daily food planning, healthy budgeting, and healthy food st…
Self-perceived food literacy in relation to the quality of overall diet and main meals
This cross-sectional study aimed to assess the relationship between self-perceived food literacy (SPFL) and quality of overall diet and main meals in Japanese adults. In total, 5998 adults aged 20-79 years were included in this analysis. The SPFL was assessed using the Japanese version of the 29-item Dutch SPFL scale (score range 1-5). Using validated dietary information, the Healthy Eating Index-2015 (HEI-2015) was calculated (score range 0-100)…
Monetary costs of dietary energy reported by young Japanese women
Objective Little is known about the relationship of monetary diet costs to dietary intake and obesity, particularly in non-Western populations. This study examined monetary cost of dietary energy in relation to diet quality and body mass index (BMI) among young Japanese women. Design Dietary intake was assessed by a validated, self-administered, diet history questionnaire. Diet costs were estimated using retail food prices. Monetary cost of dieta…
Relationship between soy and isoflavone intake and periodontal disease
Our findings suggest that soy and isoflavone intake may decrease the likelihood of periodontal disease. Further investigations with objective measures for periodontal disease are needed to confirm our findings
Monetary cost of self-reported diet in relation to biomarker-based estimates of nutrient intake in young Japanese women
Objective All previous studies on monetary diet cost have examined the relationship of monetary cost of self-reported diet to self-reported, rather than biomarker-based, estimates of dietary intake. The present cross-sectional study examined the association between monetary costs of self-reported diet and biomarker-based estimates of nutrient intake. Design Monetary diet cost (Japanese yen/1000 kJ) was calculated based on dietary intake informati…
Monetary cost of dietary energy is negatively associated with BMI and waist circumference, but not with other metabolic risk factors, in young Japanese women
Objective Little is known about the relationship of dietary cost to health status. The present cross-sectional study examined the association between the monetary cost of dietary energy (Japanese yen/4184 kJ) and several metabolic risk factors. Design Monetary cost of dietary energy was estimated based on dietary intake assessed by a self-administered diet history questionnaire and retail food prices. Body height and weight, from which BMI was de…
Iron intake does not significantly correlate with iron deficiency among young Japanese women
Objectives We evaluated the association of nutrient intake with Fe deficiency with regard to lifestyle factors and health condition in young Japanese women. Uniquely among developed countries, dietary habits render Japanese populations vulnerable to Fe deficiency, owing to their relatively low intake of Fe and high intake of Fe absorption inhibitors, such as green tea and soyabeans. Design A cross-sectional study. Setting and subjects The subject…
Dietary Folate, Riboflavin, Vitamin B-6, and Vitamin B-12 and Depressive Symptoms in Early Adolescence
OBJECTIVE: To examine the association between dietary folate, riboflavin, vitamin B-6, and vitamin B-12 and depressive symptoms in a group of adolescents. METHODS: This cross-sectional study, conducted in all public junior high schools in Naha City and Nago City, Okinawa, Japan, included 3,067 boys and 3,450 girls aged 12 years to 15 years (52.3% of eligible sample). Dietary intake was assessed using a validated, self-administered diet history qu…
Relative validity of dietary patterns derived from a self-administered diet history questionnaire using factor analysis among Japanese adults
Objective Although dietary pattern approaches derived from dietary assessment questionnaires are widely used, only a few studies in Western countries have reported the validity of this approach. We examined the relative validity of dietary patterns derived from a self-administered diet history questionnaire (DHQ) among Japanese adults. Design The DHQ, assessing diet during the preceding month, and 4 d dietary records (DR) were collected in each s…
Estimation of caffeine intake in Japanese adults using 16 d weighed diet records based on a food composition database newly developed for Japanese populations
Objective Previous studies in Western populations have linked caffeine intake with health status. While detailed dietary assessment studies in these populations have shown that the main contributors to caffeine intake are coffee and tea, the wide consumption of Japanese and Chinese teas in Japan suggests that sources of intake in Japan may differ from those in Western populations. Among these teas, moreover, caffeine content varies widely among t…
Nutritional adequacy of three dietary patterns defined by cluster analysis in 997 pregnant Japanese women
Objective To examine the adequacy and inadequacy of dietary patterns in pregnant women for which information is absolutely lacking. Design Diet was assessed by a validated, self-administered diet history questionnaire (DHQ). Dietary patterns were extracted from the intake of thirty-three food groups (g/4184 kJ (1000 kcal)), which were summarized from 147 foods assessed with the DHQ, by cluster analysis. Nutritional inadequacy for selected twenty …
Comparison of relative validity of food group intakes estimated by comprehensive and brief-type self-administered diet history questionnaires against 16 d dietary records in Japanese adults
Objective To compare the relative validity of food group intakes derived from a comprehensive self-administered diet history questionnaire (DHQ) and a brief-type DHQ (BDHQ) developed for the assessment of Japanese diets during the previous month using semi-weighed dietary records (DR) as a reference method. Design Between November 2002 and September 2003, a 4 d DR (covering four non-consecutive days), a DHQ (150-item semi-quantitative questionnai…
Dietary patterns in infancy and their associations with maternal socio‐economic and lifestyle factors among 758 Japanese mother–child pairs
Dietary habits established in early childhood contribute to lifelong dietary pattern and the development of early risk factors for disease in adulthood. Although a large body of epidemiologic data from Western countries show that the dietary pattern of children is influenced by maternal socio-economic and lifestyle characteristics, information on this topic in non-Western countries is absolutely lacking. The present study identified dietary patte…
Within- and Between-Individual Variation in Energy and Nutrient Intake in Japanese Adults
In a group of Japanese adults, coefficients of within-individual variation and between-individual variation, which were used to estimate the group size and number of records required for adequate dietary assessment, differed by age, sex, and nutrient.
Associations between meal and snack frequency and diet quality and adiposity measures in British adults
Objective To examine how different definitions of meals and snacks can affect the associations of meal frequency (MF) and snack frequency (SF) with dietary intake and adiposity measures. Design Based on 7 d weighed dietary record data, all eating occasions providing ≥210 kJ of energy were divided into meals or snacks based on contribution to energy intake (≥15 % or Setting Great Britain. Subjects British adults aged 19–64 years ( n 1487). Results…
Meal and snack frequency in relation to diet quality in US children and adolescents
Objective To examine the associations of meal frequency (MF) and snack frequency (SF) with diet quality. Design Dietary intake was assessed using two 24 h dietary recalls. All eating occasions providing ≥210 kJ of energy were divided into meals or snacks on the basis of contribution to energy intake (≥15 % or Setting Nationally representative sample of the US population. Subjects Children aged 6–11 years ( n 4269) and adolescents aged 12–19 years…
Monetary value of self-reported diets and associations with sociodemographic characteristics and dietary intake among Japanese adults
Objective To examine the relationships of monetary value of diets with sociodemographic and lifestyle characteristics and dietary intake among Japanese adults. Design Cross-sectional study based on two nationally representative surveys: the Comprehensive Survey of Living Conditions and the National Health and Nutrition Survey, 2013. Dietary intake was assessed by a 1 d semi-weighed household dietary record with information on individual proportio…
A Japanese diet with low glycaemic index and glycaemic load is associated with both favourable and unfavourable aspects of dietary intake patterns in three generations of women
Objective Western studies have suggested cultural differences in food and nutrient intake patterns associated with dietary glycaemic index (GI) and glycaemic load (GL). Here, we conducted a cross-sectional study to examine the GI and GL of Japanese diets in relation to food and nutrient intakes. Design Dietary intake was assessed using a validated, self-administered, diet history questionnaire. Setting A total of thirty-five of forty-seven prefec…
Development and simulated validation of a dish composition database for estimating food group and nutrient intakes in Japan
Objective: To develop a dish composition database (DCD) and assess its ability to estimate dietary intake. Design: The DCD was developed based on 16 d dietary records (DR). We aggregated all reported dishes into 128 dish codes and calculated mean food group and nutrient contents for each code. These data were used to calculate dietary intake in a different population that completed a 4 d DR. The estimated values were compared with those estimated…
A longer time spent at childcare is associated with lower diet quality among children aged 5–6 years, but not those aged 1.5–2 and 3–4 years
This study showed that long time spent at childcare was strongly associated with low diet quality among children aged 5-6 years, but not those aged 1·5-2 and 3-4 years. More research is needed to clarify different associations in each age group
Validity of a dish composition database for estimating protein, sodium and potassium intakes against 24 h urinary excretion
Objective: We assessed the validity of a recently developed dish composition database (DCD) against urinary biomarkers compared with a standard food composition database (FCD). Design: Intakes of protein, Na and K were estimated by 2 × 24 h urine collections and by 4 d dietary record data based on the DCD (including 128 dishes) or FCD (including 1878 foods). Setting: Japan. Participants: A total of 161 men and 163 women aged 20–69 years. Results:…
Snacking in Japanese nursery school children aged 3–6 years
Objective: This cross-sectional study evaluated the dietary characteristics of snacks, the contribution of snacks to daily nutrient intake and the association of energy intake (EI) from snacks with the prevalence of nutritional inadequacy in Japanese nursery school children. Design: Foods and nutrients consumed in each eating occasion were assessed by 3-d dietary records. The prevalence of inadequate intake of twenty nutrients assessed by the age…
Development, validation and utilisation of dish-based dietary assessment tools
Objective: To summarise the existing evidence of development, validation and current status of utilisation of dish-based dietary assessment tools. Design: Scoping review. Setting: Systematic search using PubMed and Web of Science. Results: We identified twelve tools from seventy-four eligible publications. They were developed for Koreans ( n 4), Bangladeshis ( n 2), Iranians ( n 1), Indians/Malays/Chinese ( n 1), Japanese ( n 3) and Chinese Ameri…
Characterisation of breakfast, lunch, dinner and snacks in the Japanese context
Objective: To characterise different meal types by examining the contribution of specific meals to the total intakes and the nutritional quality of each meal. Design: A cross-sectional analysis was conducted based on dietary data collected using 4-d dietary record. Diet quality was assessed by the Healthy Eating Index-2015 and Nutrient-Rich Food Index 9.3. Setting: Japan. Participants: Adults aged 20–81 years ( n 639). Results: Diet quality was, …
Eating patterns in a nationwide sample of Japanese aged 1–79 years from Minnade study
Objective: Although there is growing evidence suggesting that eating patterns are important determinants of health status, comprehensive information on patterning of eating behaviours is almost lacking. The aim of this cross-sectional study was to describe eating patterns in Japan. Design: Information on actual eating behaviours was collected using 2-d dietary record in each season over a year (total 8 d). Eating occasions were defined as any dis…
Consumption of highly processed foods in relation to overall diet quality among Japanese adults
Objective: To (i) examine the consumption of highly processed foods (HPF) in relation to diet quality among Japanese adults and (ii) compare the results when dishes prepared away home are disaggregated into food ingredients before classification by processing levels and the results when they are not. Design: Cross-sectional analysis using 4-day dietary record data. Foods were categorised by level of processing using the framework developed by the…
Are popular books about diet and health written based on scientific evidence? A comparison of citations between the USA and Japan
Objectives: To describe and compare the references cited in popular books about diet and health between the USA and Japan. Design: Books were selected based on their best-seller rankings in the diet and health category of online bookstores. We identified references throughout all pages of the books and examined the number of references, reference format (identifiable or not) and presence of specific types of references, such as systematic reviews…
Medicine (26 obras) · Nutritional Studies and Diet (22 obras) · Environmental health (17 obras) · Biology (15 obras) · Obesity, Physical Activity, Diet (15 obras) · Demography (13 obras) · Food Science (13 obras) · Internal Medicine (13 obras) · Demography (12 obras) · Endocrinology (10 obras)