Masayuki Ikeda
Biographic Data
| ID | 7252866 |
|---|---|
| NAME | Masayuki Ikeda |
| GIVEN NAMES | Masayuki |
| FAMILY NAME | Ikeda |
| SIGNATURE | IKEDA M |
| AFFILIATIONS | Tohoku University |
| ORCID | 0000-0002-0885-6781 |
| VERIFIED | Yes |
| TOTAL WORKS | 10 |
| TOTAL CITATIONS | 2 |
| AUTHOR COUNT | 10 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1983 |
| LATEST PUBLICATION YEAR | 2016 |
| H-INDEX | 1 |
Holocene geohazard events on the southern Izu Peninsula, central Japan
Faunal compositions and 14C ages of emerged sessile assemblages at four sites in the southern part of Izu Peninsula, central Japan, indicate that co-seismic uplift occurred at 1256–950 BC, AD 1000–1270, AD 1430–1660, and AD 1506–1815. The data suggest that the stress field in the southern part of Izu Peninsula changed to its current north–south compression at ca. 3100 BP, and that the recurrence intervals for uplift-inducing earthquakes have beco…
Effects of revision of Japanese food composition tables on estimation of nutrient intakes, with reference to age-dependent differences
Objective: To identify effects of revision of the Japanese food composition tables from the fourth version to the fifth version on nutrient intake estimation. Design: A database on 783 samples of 24-hour food duplicate portions was re-visited. Nutrients in the duplicate portions were estimated by use of the fourth and fifth versions of the Japanese food composition tables in parallel, together with supplemental use of other databases. The two set…
Estimation of salt intake by a simple questionnaire
To assess whether a simple questionnaire could be used to categorize the subjects into different salt‐intake groups, we compared the answers to four questions concerning food habits (total amount of food, number of bowls of miso soup, amount of pickles and saltiness of home‐made pickles) with 24‐hr urine NaCl levels of 1025 subjects from a Japanese farming village. The correlation coefficients between the scores from answers to the questions and …
Number of food items as an indicator of nutrient intake
Total food duplicates for 24 hours were collected from farmers in Japan, once in 1977–1981 (109 subjects) and then in 1991–1992 (72 subjects). Nutrients (including energy, protein, fat, some minerals, and several vitamins) in each food item in the food duplicate were estimated taking advantage of the values given in the Standard Tables of Food Compositions in Japan. The number of the food items in each food duplicate was counted excluding duplica…
Reduced carbohydrate intake in past 10 years in two rural areas in Japan
Two farming populations participated in the present nutritional survey. One group consisted of rice producing farmers in Miyagi prefecture in north‐eastern Japan, and the other group was farmers in Okinawa prefecture in southern Japan where agricultural activity focuses on sugar cane and horticulture. The collection of 24‐hr total food duplicates was carried out in winter seasons, and was repeated twice with the first study in 1977–1981, and the …
Effectiveness of attention to reduce salt in diet, as evidenced by reduced urinary excretion of salt
The attitude of people toward salty food [including their attention to reduce salt (NaCI) intake] was investigated by a questionnaire method in 524 adult subjects (131 men, and 393 women including 313 women in the 30 to 60 years age range) in a small farming village in northeastern Japan. Excretion of NaCI in urine was measured in 24‐hr samples which were collected at the same time. The amount of NaCI excreted in urine varied significantly by age…
Urban‐rural differences in food habits in north‐eastern Japan
Popularity of 14 food items was investigated by questionnaires with more than thirty thousand respondents (ages ≥40 years). Half of these respondents (the urban group), lived in a prefectural city and the remaining half (the rural group), in an agricultural area in north‐eastern Japan. Four traditional items of food (rice, fish, miso soup and pickles) were frequently consumed by both groups, but they were significantly more popular in the rural g…
Comparison of food constituents in the diet of female agricultural workers in Japan with high and low concentrations of high density lipoprotein in their sera
Over 300 female farmers from 18 regions in various parts of Japan were examined for high density lipoprotein cholesterol (HDL) in the serum. Based on the HDL levels, three examinees with the highest HDL and another three with the lowest HDL were selected from each region to form the high HDL group (high group, 54 subjects) and the low HDL group (low group, 54 subjects), respectively, so that any geographical effects on HDL could be excluded. The …
Variability of serum high density lipoprotein cholesterol concentration in healthy subjects in a three year term
The measurements of serum high density lipoprotein cholesterol (HDL-C), total cholesterol (TC), and triglyceride (TG) were repeated in 170 apparently healthy farming women once a year for three years (1980-2) to examine the variability of the results within the same individual. Although the mean HDL-C and TC values varied to some extent year by year, higher correlation coefficients between any pair and smaller coefficients of variation in the thr…
Salt and geographical mortality of gastric cancer and stroke in Japan
Age- and sex-adjusted mortality rates of gastric cancer and stroke in the years 1974-6 for 46 prefectures and 12 regions in Japan were related to regional differences of average per capita daily intake of salt during the period 1966-70 to test Joossen's hypothesis that salt is a common cause of both gastric cancer and stroke. While mortality rates of stroke were strongly correlated with salt intake in 12 regions (r = 0.85, p less than 0.001), mor…
Comparison of food constituents in the diet of female agricultural workers in Japan with high and low concentrations of high density lipoprotein in their sera
Over 300 female farmers from 18 regions in various parts of Japan were examined for high density lipoprotein cholesterol (HDL) in the serum. Based on the HDL levels, three examinees with the highest HDL and another three with the lowest HDL were selected from each region to form the high HDL group (high group, 54 subjects) and the low HDL group (low group, 54 subjects), respectively, so that any geographical effects on HDL could be excluded. The …
Salt and geographical mortality of gastric cancer and stroke in Japan
Age- and sex-adjusted mortality rates of gastric cancer and stroke in the years 1974-6 for 46 prefectures and 12 regions in Japan were related to regional differences of average per capita daily intake of salt during the period 1966-70 to test Joossen's hypothesis that salt is a common cause of both gastric cancer and stroke. While mortality rates of stroke were strongly correlated with salt intake in 12 regions (r = 0.85, p less than 0.001), mor…
Variability of serum high density lipoprotein cholesterol concentration in healthy subjects in a three year term
The measurements of serum high density lipoprotein cholesterol (HDL-C), total cholesterol (TC), and triglyceride (TG) were repeated in 170 apparently healthy farming women once a year for three years (1980-2) to examine the variability of the results within the same individual. Although the mean HDL-C and TC values varied to some extent year by year, higher correlation coefficients between any pair and smaller coefficients of variation in the thr…
Comparison of food constituents in the diet of female agricultural workers in Japan with high and low concentrations of high density lipoprotein in their sera
Over 300 female farmers from 18 regions in various parts of Japan were examined for high density lipoprotein cholesterol (HDL) in the serum. Based on the HDL levels, three examinees with the highest HDL and another three with the lowest HDL were selected from each region to form the high HDL group (high group, 54 subjects) and the low HDL group (low group, 54 subjects), respectively, so that any geographical effects on HDL could be excluded. The …
Urban‐rural differences in food habits in north‐eastern Japan
Popularity of 14 food items was investigated by questionnaires with more than thirty thousand respondents (ages ≥40 years). Half of these respondents (the urban group), lived in a prefectural city and the remaining half (the rural group), in an agricultural area in north‐eastern Japan. Four traditional items of food (rice, fish, miso soup and pickles) were frequently consumed by both groups, but they were significantly more popular in the rural g…
Effectiveness of attention to reduce salt in diet, as evidenced by reduced urinary excretion of salt
The attitude of people toward salty food [including their attention to reduce salt (NaCI) intake] was investigated by a questionnaire method in 524 adult subjects (131 men, and 393 women including 313 women in the 30 to 60 years age range) in a small farming village in northeastern Japan. Excretion of NaCI in urine was measured in 24‐hr samples which were collected at the same time. The amount of NaCI excreted in urine varied significantly by age…
Number of food items as an indicator of nutrient intake
Total food duplicates for 24 hours were collected from farmers in Japan, once in 1977–1981 (109 subjects) and then in 1991–1992 (72 subjects). Nutrients (including energy, protein, fat, some minerals, and several vitamins) in each food item in the food duplicate were estimated taking advantage of the values given in the Standard Tables of Food Compositions in Japan. The number of the food items in each food duplicate was counted excluding duplica…
Reduced carbohydrate intake in past 10 years in two rural areas in Japan
Two farming populations participated in the present nutritional survey. One group consisted of rice producing farmers in Miyagi prefecture in north‐eastern Japan, and the other group was farmers in Okinawa prefecture in southern Japan where agricultural activity focuses on sugar cane and horticulture. The collection of 24‐hr total food duplicates was carried out in winter seasons, and was repeated twice with the first study in 1977–1981, and the …
Estimation of salt intake by a simple questionnaire
To assess whether a simple questionnaire could be used to categorize the subjects into different salt‐intake groups, we compared the answers to four questions concerning food habits (total amount of food, number of bowls of miso soup, amount of pickles and saltiness of home‐made pickles) with 24‐hr urine NaCl levels of 1025 subjects from a Japanese farming village. The correlation coefficients between the scores from answers to the questions and …
Effects of revision of Japanese food composition tables on estimation of nutrient intakes, with reference to age-dependent differences
Objective: To identify effects of revision of the Japanese food composition tables from the fourth version to the fifth version on nutrient intake estimation. Design: A database on 783 samples of 24-hour food duplicate portions was re-visited. Nutrients in the duplicate portions were estimated by use of the fourth and fifth versions of the Japanese food composition tables in parallel, together with supplemental use of other databases. The two set…
Holocene geohazard events on the southern Izu Peninsula, central Japan
Faunal compositions and 14C ages of emerged sessile assemblages at four sites in the southern part of Izu Peninsula, central Japan, indicate that co-seismic uplift occurred at 1256–950 BC, AD 1000–1270, AD 1430–1660, and AD 1506–1815. The data suggest that the stress field in the southern part of Izu Peninsula changed to its current north–south compression at ca. 3100 BP, and that the recurrence intervals for uplift-inducing earthquakes have beco…
Biology (7 works) · Medicine (7 works) · Animal science (5 works) · Internal Medicine (5 works) · Endocrinology (4 works) · Food intake (4 works) · Food Science (4 works) · Demography (3 works) · Environmental health (3 works) · Geography (3 works)