著者

秋原 悠 小田 俊明 山本 忠志 曽我部 晋哉

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2020, no.89, pp.22-32, 2020 (Released:2020-12-25)

参考文献数

25

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The purpose of this study was to clarify the characteristics of body composition of Japanese elementary and junior high school students. In this study, body composition was measured using a body composition analyzer (Inbody470).In this method, body composition take as a 4-components model (total body water/protein/mineral/body fat mass), and the subdivided data can be easily analyzed. Subjects that were included in this study total 791 students (Boys: 373, Girls: 418) from the 1st grade of elementary school to the 3rd grade of junior high school.As a result of the analysis, both the boys and girls height and weight gradually increased year by year. The amount of fat-free mass also increased, but body fat mass decreased in boys after the 6th grade of elementary school. For the girls, it increased year by year. The results showed the differences for each gender in all components since junior high school. In particular, there was a marked difference in the 3rd grade of junior high school (total body water: p < 0.001, protein: p < 0.001, mineral: p < 0.001, body fat mass: p < 0.001). In the 4-components, regardless of the age difference in junior high school students, only protein significantly increased in boys (p < 0.05). For the girls, total body water (p < 0.001), protein (p < 0.001), and minerals (p < 0.01) were significantly decreased, and body fat percentage (p < 0.001) was significantly increased.This study clarified the gender differences and age differences of the 4 components of the body. From these results, the deterioration of the body components especially for junior high school student girls were concerned, and the necessity of taking countermeasures in exercise habits and lifestyle habits were indicated.

著者

広瀬 統一 平野 篤

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2008, no.37, pp.17-24, 2008-02-01 (Released:2010-03-12)

参考文献数

21

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In this study, we examined the relationship between birth-month distribution, skeletal age, height, and weight in adolescent soccer players. The participants were 271 well-trained male adolescent soccer players aged between 9.1 to 15.9 years (N=101 for U12, N=132 for U15, and N=38 for U18). They were divided into four groups according to their month of birth (Q1: Apr-Jun, Q2: Jul-Sep, Q3: Oct-Dec, and Q4: Jan-Mar). Then, the number of players in each group was compared with the standard population of children in Tokyo. Our result showed significant asymmetries in the birth-month distribution for participants of all age groups (p<0.001); it was less than 10% for participants belonging to group Q4. However, no significant difference in maturation ratio (skeletal age-chronological age) was seen among the groups. Moreover, skeletal age did not differ significantly among birth-month for all groups except for Q3. These tendencies were also seen in height and weight distributions. These findings imply that players who biologically mature at an early stage may be selected systematically as soccer players at competitive levels; however, biases based on maturation and physique may cause asymmetric birth-month distribution, as seen in this study.

著者

田口 喜久恵 遠藤 知里 栗田 泰成 田村 元延

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2017, no.74, pp.34-44, 2017 (Released:2017-06-27)

参考文献数

21

被引用文献数

1

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The aim of this study was to clarify the grip strength and progress of development in infants aged 0 to 2 years old. The subjects were 396 infants and we measured their grip strength with grip dynamometer (T. K. K. 1269r) for the infants. Date on 313 subjects out of the 396 were analyzed. The average of grip strength was followed:0 to 5 months was 0.81 kg, 6 to 11 months was 1.05 kg, 12 to 17 months was 1.45 kg, 18 to 23 months was 1.72 kg, 24 to 29 months was 2.31 kg and 30 to 35 months was 3.00 kg. Significant difference between boys and girls were not shown. The relationships between grip strength and age was the most significant, then height and weight next to age. Grip strength increased with age, as a result, we were able to draw the growth diagrams for grip development in infants aged 0 to 2 years old.

著者

大澤 清二 下田 敦子 タン ナイン

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2021, no.90, pp.1-10, 2021 (Released:2021-07-02)

参考文献数

10

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The existence of adolescent growth spurts (PHV, Peak Height Velocity) has long been the norm for human height growth theory. However, according to Ohsawa's report, the hunter-gatherer Mlaburi, who lived in the forests of Thailand and Laos, did not see the adolescent growth spurt of their stature. The study reexamined this issue from growth data for the hunter-gatherer Salone (Moken) living in the Andaman Waters of Myanmar. As a result, similar to Mlabri, the adolescent growth spurt (PHV) could not be observed in Salone. The growth period of Salone was very long, and stature continued to grow to nearly 20 years of age.

著者

平塚 寛之 引原 有輝

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2015, no.67, pp.1-15, 2015 (Released:2015-08-04)

参考文献数

21

被引用文献数

1 3

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Primary aim of this study is to investigate the characteristics of playgrounds based on area, the number of playground equipment and its space. Moreover, we examined the use frequency and the interest in playground of primary schoolchildren. Three hundred ninety two playgrounds in major urban area and medium-size city were classified into 7 categories based on the arrangement of playground equipment space, open space and nature space. Moreover, total number of playgrounds was divided equally among four based on playground area. We investigated the size and the kinds of playground equipment by each 25 percentile of area. We asked 4111 subjects of primary schoolchildren to answer eight questions about usage situation and four questions about the interest in playground. As a result, this research showed that most of playgrounds consisted only of a playground equipment space. In addition, we clarified that there were a lot of playground equipment in playgrounds categorized into the highest quartile compared to other quartiles. On the other hand, the kinds of equipment in playgrounds larger than middle scale appear to be similar. With regard to status of utilization, “unused” and “1-2 times a week” were mostly selected. The duration of usage on weekends tends to be divided into “less than 30 min” and “more than 2 hours”. In conclusion, it was likely that children's favorite equipment differed from what they usually used. Therefore, it might be important to establish playground which consists the various kinds of equipment and space. Moreover, we suggest that several playgrounds around children's houses should be more conceptually clearly-defined on equipment and space in future.

著者

中田 英雄

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.1995, no.23, pp.67-73, 1995-06-30 (Released:2010-03-16)

参考文献数

46

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It is reported that physical growth of blind and partially sighted children is in a poor level and the adolescent growth spurt is earlier in the blind than in the partially sighted and the sighted. Most of studies of age at menarche have noted earlier onset in the blind than in the sighted. These studies have suggested that blindness is associated with an age of menarche which is earlier than sighted adolescents. Previous studies described delays in the appearance of motor skills, especially agility, with poor physical work capacity and balance. A recent research has suggested that the physical work capacity and postural control of the blind and partially sighted can be developed by appropriate training. By some well-designed program, the blind and partially sighted children should be able to enhance the ability to use their potential to the fullest. The adapted physical activity should be better understood.

著者

遠山 健太 鈴木 宏哉 渡 正

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2023, no.95, pp.52-70, 2023 (Released:2023-08-18)

参考文献数

36

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The decline in children's physical fitness has become a widely recognized problem in recent years. To address this issue, the Japanese government introduced the New Physical Fitness Test in 2008. The latest report shows that more than 80% of elementary schools throughout Japan have been complying with this directive. According to the Japan Sports Agency, 71.1% of the schools were using the test results to help develop their yearly plans; however, as the questionnaires were answered by each of the schools, it is unclear whether the elementary school teachers were actually using the test results effectively or not. The purpose of this research is to identify elementary school teachers' attitude toward the physical fitness test, and to determine how they are utilizing it as an educational tool to stimulate and promote students' personal fitness goals. The research was conducted among 840 teachers who are currently working at elementary schools across Japan. The questionnaires consisted of a total of 11 questions, of which nine required descriptive answers. The KJ method was used to categorize each answer into smaller groups of similar answer. The results showed that the elementary school teachers had both positive and negative perceptions of the physical fitness test, and the two major findings were as follows: (1) Although some of the teachers used the fitness test in their class, they were unable to identify a relationship between the education guidelines and the fitness test; therefore, they could not utilize the test results effectively. (2) Teachers felt burdened by the limited time they have to prepare and manage the New Physical Fitness Test. According to these findings, there should be clearer guidelines on how to use the test effectively, so that both teachers and students will be able to utilize the assessment and implement it to improve their fitness.

著者

浦上 大輔 浦田 清 布上 恭子 渡会 雅明 浜野 貢 須田 力 中川 功哉

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.1997, no.25, pp.20-28, 1997-07-31 (Released:2010-03-16)

参考文献数

11

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The purpose of this study was to investigate the life styles and physical activities of senior high school and technical college students in a snowy region both in snowfall and non-snowfall season. Questionnaires on the life style and physical activity were sent to 1675 students in Hokkaido.The following results were obtained.1) The students went to bed and got up earlier during snowfall season than during non-snowfall season. However, the hours of sleep were almost the same in both seasons.2) More than a half of the students attend to school in snowfall season by different way from non-snowfall season. The commuting time in snowfall season was much longer than that in non-snowfall season.3) More than one-third of the students answered that the amount of their physical activities decreased during the snowfall season. This trend was more noticeable among students who exercised 3 or more times a week than among students who exercised less than 3 times a week.4) For students who did not participate in sports club activities, the shoveling snow in winter was found to be effective to compensate for hypokinetic sensation exercise.5) In snowfall season, students tend to exercise for prolonged time with low frequency and low intensity, however in non-snowfall season they tend to exercise for shorter time with high frequency and high intensity.

著者

秋武 寛 安部 惠子 三村 寛一

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2016, no.70, pp.17-26, 2016 (Released:2016-10-14)

参考文献数

39

被引用文献数

2

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Children need a minimum of 60 minutes of physical activity per day, a standard proposed by various national guidelines. To our knowledge, however, it is unclear whether there is any positive association between motor ability and vigorous intensity time in preschool children. Therefore, this study aimed to clarify the relationship between motor ability and step counts or vigorous physical activity time in preschool children (n=754, 383 boys and 371 girls). We measured the subjects' motor ability while performing 6 activities. The performance in each activity was rated on a 5-point scale (5-1), as suggested by Japanese previous study. Daily physical activity was assessed using accelerometers (Lifecorder EX, Suzuken, Japan) throughout the day for 7 consecutive days. LC intensity assessed LC1-6 (lower intensity than runnning) and LC7-9 (higher intensity than running). LC7-9 time (min/day) was from 23.4±8.3 to 24.4±8.2 in boys and from 18.0±5.2 to 18.9±7.8 in girls on weekdays and from 15.5±9.1 to 17.0±10.7 in boys and from 15.2±8.3 to 15.5±9.4 in girls on weekends, respectively. The total fitness scores were weakly but significantly positively correlated with step counts in both sexes and LC7-9 time in girls. Until B rank in the total fitness scores, step counts (step/day) needed 14685.4 boys and 12419.0 girls on weekdays, and 11384.4 boys and 10398.0 girls on weekends, respectively. LC7-9 needed 24.1 boys and 18.5 girls on weekdays, and 21.4 boys and 17.1 on weekends at least, respectively. Our findings were suggested daily step counts and LC7-9 time to improve motor ability in preschool children.

著者

渡邊 將司 田村 真理子

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2017, no.74, pp.1-8, 2017 (Released:2017-06-27)

参考文献数

29

被引用文献数

2

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This study was conducted to elucidate the characteristics of children who were born later in the school year, exhibiting better physical fitness. The subjects were 1202 public elementary school children (grades 1-6) in Ibaraki prefecture, for whom birth date, height, weight, physical fitness test scores, and physical activity had been assessed by questionnaire. They were divided into four categories by birth date:Q1, April-June;Q2, July-September;Q3, October-December;and Q4, January-March (including April first). All data were integrated after classification by grade and gender. Physical fitness groups were defined to include subjects who had more than 50 physical fitness deviation score as a higher physical fitness group (HPF). The others were a lower physical fitness group (LPF). Results of statistical analysis show for Q4 that physical activity of HPF had a higher value than LPF, although no difference was found for height or BMI. For HPF, a lower value was found for height of Q4 than for either Q1 or Q2, although no difference was found for BMI or physical activity. These results demonstrate that although elementary school children who were born later in the school year and who had higher physical fitness showed poor body size, they attained higher physical fitness through higher levels of physical activity.

著者

鈴木 綾子 野井 真吾

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

no.36, pp.21-26, 2007

被引用文献数

1

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The purpose of this study was to make clear the relationship between sleeping habits and sleeping problems and/or physical discomforts among junior high school students. The subjects were comprised of 146 boys and 170 girls in three public junior high schools. The investigation was carried out by a questionnaire in September 2003. The questionnaire contained questions about the time subjects go to bed, time subjects wake up, sleeping problems and physical discomfort. The main findings were as follows: 1) The time subjects go to bed becomes later with increasing age among both boys and girls (p<0.05). Meanwhile, the fluctuations in time to bed showed no significant differences according to sex or grade. 2) The group who went to bed late had significantly higher values for sleeping problem scores and physical discomfort scores (p<0.05). 3) The sleeping problem scores according to fluctuations in time to bed were: for the low fluctuations group, 12.5±13.7 points, 18.7±17.2 points for the middle fluctuations group, and 24.3±20.5 points for the high fluctuations group. The sleeping problem scores for the high fluctuations group were significantly higher than it was for the low fluctuations group (p<0.05). 4) The physical discomfort scores were 20.1±29.8 points for the low fluctuations group, 29.5±30.3 points for the middle fluctuations group and 41.3±30.2 points for the high fluctuations group. The physical discomfort scores for the high fluctuations group were significantly higher than those for the low and middle groups (p<0.05).<br>From the above, it was shown that there is a need for the regulation of time to bed to be added to traditional health education.

著者

Gallahue David L.

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

pp.15-16, 2004

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今回の講演の焦点は, 記述的および解説的な運動発達の理論モデルを示すことである. 記述的モデルについては, 出生から老年に至る過程において普通に成長していく個人が通過する典型的な局面と段階を表現する砂時計モデルを中心に示す. 解説的モデルについては, 運動課題の必要条件, 個人の生物学的特徴および学習環境条件の中で生ずる一連の過程を表現する逆三角形モデルを利用する.<br>このような知識は, 同時に運動スキル習得の過程に関して我々が理解していることと結び付けられる. すなわち, 新しい運動スキルの習得は段階および水準ごとに生じ, 学習者の目標と同様に学習者の認識状況の両方から検証されうる.<br>最後に, 我々は運動発達と運動スキル習得について観察される水準を考慮に入れて, 学習者の役割に対する指導者の役割について検討する. この場合の論点は, 両者を考慮して, 運動スキルの教師としての我々は, 運動スキルの観察された水準において良い変化をもたらすように利用された教授法に関して, 我々の行動を適応させることができるということである.

著者

カルマール 良子 今西 香寿

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2020, no.86, pp.44-51, 2020 (Released:2020-05-23)

参考文献数

26

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Previous studies have shown that the use of a baby-walker during the first year after birth of a baby, when the motor skill is most significantly developed, may affect the subsequent development of the child. However, since trends in use of other infant equipment have not been investigated, it is not clear what kind of infant equipment is used at each stage of the infantile development. The present study was usage survey of infant equipment, including those other than baby-walkers, for newborns and infants during their first year of life. The survey was conducted by means of a questionnaire targeting 612 infants in Hyogo, Okayama, and Tottori prefectures in Japan, resulting in 307 valid responses, which have revealed their usage of infant equipment. Some items of infant equipment that are used for a longer time than baby-walkers may restrict infant. While the infant equipment increases the safety of the lives of infants, our data suggests the possibility that those devices may also limit their self-directed, which is important for gross motor development.

著者

下田 敦子 大澤 清二 タン ナイン ジョ ネイ

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2018, no.81, pp.10-20, 2018 (Released:2019-01-18)

参考文献数

9

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Current of 21st century, in Demawso area, Kayah state, Myanmar, there are living Kayan women, so-called “Long neck tribes”. They go through their daily life wearing long neck rings and ankle rings for their entire lives.In this research, we investigate the influence on growth shape wearing neck ring. We compare women group who wear neck rings (wearer group) with group who do not wear neck rings (non-wearer group) in Demawso area, Kayah state. The result are as follows, comparing the neck length of both groups in each age group.1. Wearing neck ring begins from childhood, and it continues all through their lives.2. There is no wearing influence from childhood to early part of adolescent period.3. It starts to appear the influence of wearing neck ring from “age 11 to under 15 age group”, which we call it early part of adolescent period.4. From “age 21 to under 30 age group”, the difference between two groups have increased tremendously. The value t shows t0=2.703. We observe the significant difference of average value between the two groups.5. From 30's onward, statistic significant difference could be detected in both groups.6. In “Over age 60's”, neck length of “wearing group” is 12.18 cm. It is the longest length among all the age group. Neck length of “no-wearing group” is 7.65 cm, and the gap between “wearing group” and “non-wearing group” is 4.53 cm, and this gap is the biggest in all age group.7. When height reaches the 140 cm at the early part of adolescent period, they wear much extended neck rings, and it will make big influence to growth & form afterward.Considering the results mentioned above, we have investigated the influence on growth wearing neck ring in each age group. Wearing neck ring has big influence on the shape of women neck. In the near future, our research could be the valuable evidence for judging the matter of wearing neck ring.

著者

浮田 咲子 出村 愼一

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2019, no.82, pp.25-33, 2019 (Released:2019-04-25)

参考文献数

38

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Floating toes have been a suspected cause of falls and are thought to affect foot form and exertion of toe muscle strength. This study examined foot form and toe muscle strength in children with and without floating toes. The subjects were 372 boys and girls aged 5-10 years old. We measured their height, weight, toe muscle strength, foot length, foot width, heel width, center of gravity position, and the internal and external arches of both feet. Floating toes were found in 17.4% of the boys and 10.9% of the girls and occurred most frequently with the fifth toe in both sexes. No significant differences in age, physique, toe muscle strength, or foot form were found in the groups with and without floating toes, suggesting that floating toes are neither related to foot form nor to toe muscle strength.

著者

牛島 一成 渡辺 裕晃 志村 正子

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2016, no.72, pp.19-30, 2016 (Released:2016-10-18)

参考文献数

42

被引用文献数

1

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[Objective] The Objective of this study was to clarify the relationships among physical fitness, academic achievements, psychological stress scale scores and lifestyles (eating breakfast, sleeping time, time spent for watching television and game). It was done for the subjects of 175 junior high school students in 2014.[Methods] We used the following statistical analyses:the Pearson product-moment correlation coefficient, the one-way analysis of variance, the Bonferroni's method for performing multiple comparisons, the chi-square test by cross tabulation and the logistic regression analysis.[Results] the primary results were as indicated below.1) Academic achievements of boys with higher physical fitness were a little high, and their stress degree was low. They could also perform well on different physical activities such as sit up and standing jump.2) Academic achievements of those who have breakfast everyday were also high, and the stress degree was low. The stress degree of those whose sleeping time a day is less than 6 hours was relatively high.3) According to the logistic regression analysis, among the factors that influenced academic achievements, physical fitness and breakfast showed large influences.As a result, it seems that it is preferable to develop the class of the health education and physical education that considers the physical strength improvement and the breakfast intake.

著者

川勝 佐希 國土 将平 笠次 良爾 長野 真弓 森田 憲輝 鈴木 和弘 渡邊 將司 上地 広昭 山津 幸司 堤 公一 辻 延浩 久米 大祐 石井 好二郎

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2018, no.78, pp.43-60, 2018 (Released:2018-08-07)

参考文献数

54

被引用文献数

1 1

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A survey was conducted to assess physical activity, depression, and sense of coherence among early adolescents. This study used a cross-sectional sample of 12,086 students (G5-G9) from 28 public elementary schools and 22 public junior-high-schools in Japan. A total of 9,424 students (G5-G8) were surveyed from December 2013 to December 2015 using the International Physical Activity Questionnaire (IPAQ) -short form to measure physical activity (PA), the Depression Self-Rating Scale for Children (DSRSC) for depressive symptoms, and the Sense of Coherence Scale-13-item version (SOC-13). Vigorous PA (VPA) of the G5 boys (4h 20 min) was significantly longer than that of the G5 girls (1h 30min) and the VPA of the junior-high-school students increased significantly compared with that of the elementary-school students. The VPA of the G8 boys reached 6h 30 min, whereas that of the G8 girls approached 3h, which was a significant difference. Additionally, more junior-high-school students participated in sports-club activities than did elementary-school students. The mean DSRS-C score of the G5 girls (10.24±5.73) was significantly higher than that of the G5 boys (9.31±5.31). No other differences by grade, were found among the elementary-school students. The depressive symptoms of the junior-high-school students indicated they had a greater risk for depression than the elementary-school students did. The mean SOC score of the G8 boys (44.58±8.11) was higher (better) than that of the G8 girls (43.46±8.30). Furthermore, the elementary-school students' score on the SOC was higher than that of the juniorhigh-school students; the score tended to decrease as the grade increased.

著者

水島 淳 小山 宏之 大山 卞圭悟

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2016, no.73, pp.13-19, 2016 (Released:2017-01-11)

参考文献数

22

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Purpose:The purpose of this study was to compare the difference of characteristics of sprinting between barefoot and shod conditions, in relation to jumping abilities in children.Method:94 children aged 6-12 years performed short sprints (30 m), counter movement jumping (CMJ) as a non-ballistic jumping and five repeated-rebound jumping (RJ) as a ballistic jumping. Sprinting conditions were randomized for each child in order to compare barefoot sprinting with shod conditions. High speed camera with 1/1000 second shutter speed was used to record calibration marks and performances of the children at a frame rate of 300 frame/second. The cameras were placed 20 m apart from the motion plane. Besides 5 video cameras from 5 angles obtained images of entire stance phase (right before foot strike to taking the toe off). Foot strikes were classified into 3 patterns:rear-foot strike (RFS) that land on the heel, mid-foot strike (MFS) that land with a flat foot, and fore-foot strike (FFS) that land on the fore-foot before bringing down the heel. Jumping abilities were assessed using CMJ jumping height and the value obtained by dividing jumping height by the ground contact time in 5RJ (RJ-index).Results and Discussion:Under barefoot condition children significantly sprinted with lower velocity (p<0.05), higher step frequency (p<0.01), shorter step length (p<0.01) and shorter contact time (p<0.01). Additionally, barefoot condition induced the shift of ground contact manner from RFS to FFS and MFS. Children who sprinted faster with barefoot had higher jumping abilities than children who sprinted faster with shoes. Increased percentage of FFS and MFS in barefoot sprinting appears to enhance the utilization of elasticity produced in arches and Achilles tendon, which may affect positively to sprint performance for children who sprinted faster with barefoot. The result also indicated that jumping ability is higher in children who sprinted faster with barefoot. Our finding suggested that common factor could have effect on the ability of barefoot sprinting and jumping in children.

著者

中野 貴博 春日 晃章 松田 繁樹

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2016, no.70, pp.55-65, 2016 (Released:2016-10-14)

参考文献数

29

被引用文献数

1

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[Background and Purpose] It has been pointed out recently that the issue of declining physical fitness occurs even in young children. As a background, some decline in physical activity and changes in daily life rhythms have been noted. While there have been experiments examining exercise performance and lifestyle improvement in young children, their daily activity pattern has not yet been considered. Therefore, the purpose of this study was to classify the daily patterns of activity intensity and to examine the relationships between these patterns and steps, lifestyle, and health status in young children. [Method] Participants were 386 young children. We measured activity intensity during each weekday using the Lifecorde GS (Suzuken Corporation). We classified participants by activity intensity per hour, using a non-hierarchical cluster analysis with the k-means method. The differences in the daily patterns of activity intensity were confirmed using a two way ANOVA. In addition, the relationships between the daily patterns of activity intensity and steps, lifestyle, and health status were confirmed by an ANCOVA, cross tabulation, and chi-square test. [Results and Discussion] The participants were classified into two clusters and a significant difference in the daily patterns of activity intensity was confirmed. Further, a significant difference in the average number of daily steps was confirmed. The clear difference was not confirmed in a part of lifestyle and health status between two clusters.

著者

秋武 寛 安部 惠子 三村 寛一

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2016, no.70, pp.1-10, 2016 (Released:2016-10-14)

参考文献数

37

被引用文献数

1

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The purpose of this study was to determine the relationship between footprint, motor ability, and obesity with aging in 4- to 12-year-old children (n=3944, 1957 boys and 1987 girls). We measured the footprint using Pedoscope, and measured the subjects' motor ability while performing 25m sprint, broad jump, and ball throw. The footprint was classified into normal feet and flat feet. Sprint and broad jump ability with non-normal foot girls were significantly lower than those for the normal foot after the age of 7. Obesity with non-normal foot types was significantly higher than obesity with normal feet after the age of 10 boys. Sprint ability with non-obesity boys were significantly higher than obesity after the age of 10, jump ability with non-obesity was significantly higher than obesity after the age of 8, and throw ability with non-obesity boys were significantly higher than obesity after the age of 10. Sprint ability with non-obesity girls were significantly higher than obesity after the age of 7, jump ability with non-obesity was significantly higher than obesity after the age of 8, 11, and 12. Sprint ability with non-obesity of normal feet were significantly higher than obesity of normal feet from 10- to 12-year-old boys and the age of 12 girls, obesity of flat feet the age of 12 boys and the age of 9 and 10 girls. Broad jump with non-obesity of normal feet were significantly higher than obesity of normal feet the age of 11-12 boys and 12 girls, obesity of flat feet the age of 12 boys and 10 girls, non-obesity of flat feet the age of 12 girls. In conclusions, in terms of footprint, motor ability, and obesity in children, it was suggested that it was important occasion to change after 9 years old.