著者

宮口 和義 出村 慎一

出版者

日本発育発達学会

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2013, no.61, pp.1-8, 2013-11-01 (Released:2014-01-30)

参考文献数

21

被引用文献数

2

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This study aimed to clarify the effects of wearing Japanese-style sandals, which was conducted as a part of barefoot education on sole shape and position of the center of foot pressure (CFP) in preschool children. The subjects were 81 healthy children ages 4 to 5 (sandal group:28;control group:53) . Both groups were conducting indoor barefoot education. The sandal group wore sandals when commuting to school, going for a walk and playing outdoors for four months. The control group wore casual shoes in that time. The ground contact area of the soles and CFP were measured before and after four months (run-in period) in both groups. In the sandal group, the ground contact area of the foot became smaller with the formation of arch of foot. Specifically, a marked effect was found in the five-year-old children. As for CFP, there were significant changes in both groups. However, a change in the CFP towards the front of foot in the sandal group was large and the position of CFP varied from negative to positive along the Y-coordinate in the five-year-old children. From this, it is inferred that the effects of using Japanese-style sandals on changes in childrenʼs feet are large, even in preschools that use barefoot education.

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

中島 綾子 鹿野 晶子 野井 真吾

出版者

日本発育発達学会

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2011, no.51, pp.51_81-51_91, 2011 (Released:2011-08-20)

参考文献数

32

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The purpose of this study was to make clear the relationship between body temperature and lifestyle in elementary school children. The subjects were comprised of 79 boys and 102 girls in children from third to fifth grader. The investigation was carried out by the measurement of body temperature and questionnaire of lifestyle from November to December 2008 and the same period 2009. The body temperature was measured in an axilla for 10 minutes. The questionnaire was composed the sleep onset time, the getting up time, the TV hour, the game hour, the internet/mobile telephone hour, the exercise hour, the learning hour, the evacuation situation and the breakfast intake situation. The main findings were as follows : 1) The issue of low body temperature tendency worried about since 1980s was not still solved. However, about 20% of all measured values was more than 37.0°C. 2) The group of low body temperature which was less than 36.0°C at the time of getting up showed a low temperature level through day. 3) The group of high body temperature which was more than 37.0°C at the time of getting up showed a flat temperature change through day. 4) The relationship between temperature and lifestyle in girls was not clarified. On the other hand, it was shown that the internet/mobile telephone hour was long, the sleep onset time was late and the sleep hour was short in low body temperature group of boys.

著者

宮口 和義 出村 慎一

出版者

日本発育発達学会

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2013, no.61, pp.1-8, 2013

被引用文献数

2

---

This study aimed to clarify the effects of wearing Japanese-style sandals, which was conducted as a part of barefoot education on sole shape and position of the center of foot pressure (CFP) in preschool children. The subjects were 81 healthy children ages 4 to 5 (sandal group:28;control group:53) . Both groups were conducting indoor barefoot education. The sandal group wore sandals when commuting to school, going for a walk and playing outdoors for four months. The control group wore casual shoes in that time. The ground contact area of the soles and CFP were measured before and after four months (run-in period) in both groups. In the sandal group, the ground contact area of the foot became smaller with the formation of arch of foot. Specifically, a marked effect was found in the five-year-old children. As for CFP, there were significant changes in both groups. However, a change in the CFP towards the front of foot in the sandal group was large and the position of CFP varied from negative to positive along the Y-coordinate in the five-year-old children. From this, it is inferred that the effects of using Japanese-style sandals on changes in childrenʼs feet are large, even in preschools that use barefoot education.

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.

著者

大澤 清二

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.69, pp.25-35, 2015 (Released:2016-02-20)

参考文献数

10

被引用文献数

3

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From analysis of 10 years of data from the MEXT New Physical Fitness Test, we derived an answer to when physical fitness training should begin.The current proposals using the Miyashita Model are based on 30 year-old data, and need to be substantially updated.1) The current model's optimal time for physical fitness development is too late; following this model will result in missing the optimal period for training.2) There is a large difference in the optimal training period between sexes. It is necessary to propose different models for boys and girls.3) There is large potential for physical development in early childhood. Especially in endurance, agility, flexibility, etc., the optimal training period may occur during early childhood.4) For strength training, the optimal age for boys is 12.6 years old, with a range of 10.6-14.9 years old. For girls, the optimal age is 10.6, with a range from 7.65-13.55 years old. Both girl's and boy's optimal age is significantly earlier than is suggested by current models.5) Endurance training for both boys and girls should begin from 9 years of age.

著者

渡邊 將司 宮部 恵里香 塚田 友萌美 青栁 直子

出版者

日本発育発達学会

雑誌

発育発達研究 = Japan journal of human growth and development research (ISSN:13408682)

巻号頁・発行日

no.77, pp.1-9, 2017-11

著者

小磯 透 浅野 祥雄 鮫田 晋 鈴木 和弘

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.79-79, 2008

著者

鈴木 和弘 新島 淳子

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

pp.74-74, 2007

著者

中田 英雄

出版者

日本発育発達学会

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.1995, no.Appendix, pp.67-75, 1995 (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

坂口 将太 藤林 献明 苅山 靖 図子 浩二

出版者

日本発育発達学会

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2014, no.62, pp.24-33, 2014-03-01 (Released:2014-05-05)

参考文献数

25

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The purpose of this study was to investigate the relationship between rebound jumping ability and running ability in preschool children. The subjects consisted of 166 preschool children (96 boys and 70 girls;age range:2.0-6.0 years). The measurements used were jumping height of counter movement jumping (CMJ), index (jumping height/ground contact time) of consecutive rebound jumping (RJ), 20-m running velocity (RV), step length (SL) and step frequency (SF). To exclude the effects of growth on running ability, dimensionless numbers:indices of running velocity (IRV), step length (ISL) and step frequency (ISF) were calculated. Results were as follows;1 ) CMJ jumping height, RJ-index, RV, SL, IRV and ISL increased with aging. 2 ) The IRV, ISL and ISF correlated with CMJ jumping height and RJ index. The coefficient correlation of RJ-index to increase with aging. 3 ) RJ height and RJ ground contact time correlated with flight time and ground contact time in the 20-m run. These results suggest that CMJ and RJ ability influence the development of running ability in preschool children.

著者

館 俊樹 久保田 晃生 井本 岳秋 鈴鹿 和子 藤田 信 小林 寛道

出版者

日本発育発達学会

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2006, no.Supplement, pp.59-59, 2006-03-25 (Released:2010-03-16)

著者

村地 俊二

出版者

日本発育発達学会

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2005, no.Supplement, pp.17-17, 2005 (Released:2010-03-16)

著者

上野 康夫 北村 幸子

出版者

日本発育発達学会

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.1992, no.20, pp.1-3, 1992-06-15 (Released:2010-03-16)

参考文献数

3

被引用文献数

1

著者

上田 真寿美 安部 保子 薮内 ふじ江

出版者

日本発育発達学会

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.1996, no.24, pp.1-7, 1996-07-01 (Released:2010-03-16)

参考文献数

32

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This study was to investigate the effects of exercise experienced in youth on the genital function from menarche to menopause. One thousand and seven females after menopause aged from 45 to 88 completed the questionnaires. The results were as follows.1) The age of menarche became significantly younger as years went on.2) Females who had exercised in youth was significantly ahead of those who had not exercised in youth in menarche. The age of menarche was significantly earlier in more exercised group than in less exercised group.3) The frequency of pregnancy and delivery became significantly lower as years wore on.4) Although the period from menarche to menopause tended to get longer, there were no effects of the exercise experienced in youth on it.5) There were no effects of the exercise experienced in youth on the age of menopause and menopausal disorder.

著者

田中 寿一

出版者

日本発育発達学会

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.1992, no.20, pp.7-10, 1992-06-15 (Released:2010-03-16)