Confirmation of Physical Fitness Based on Polynomial Regression Evaluation of Muscle Mass Percentage against BMI in Korean Male Junior High School Students

Nozomi Tanaka,Katsunori Fujii,Jun-Dong Kim,Hosung Nho(노호성) 한국생활환경학회 2010 한국생활환경학회지 Vol.17 No.6

This study examined physical strength and motor ability based on a polynomial regression analysis of muscle mass percentage against BMI in South Korean junior high school students. The subjects were 201 students in the first year of junior high school. Measurements of physique (body height and weight) and body composition (BMI, fat mass, body fat percentage, muscle mass, and muscle mass percentage) were carried out. In tests of physical strength, items from the physical fitness test were adopted for the Korean students, and sit-ups, sit-and-reach, push-ups, and 20-meter shuttle run were measured. In the polynomial regression analysis of muscle mass percentage against BMI, a high reverse correlation (r = 0.76) was shown. In normal body type classified by standard polynomial regression evaluation chart, the group with excessive development of muscle mass was superior to other groups in sit-ups, push-ups, and 20-meter shuttle run. No significant differences were shown in any items of physical strength in slim body type students, and the group with excessive development of muscle mass in the fat body type was superior to other groups in the 20-meter shuttle run. In other words, the level of qualitative accumulation of muscle did not influence physical strength in specific physiques like slim and fat body types. In the present study, BMI was newly placed as an index of a muscle mass percentage, and it was shown that physical strength could be readily understood by body fatness judgment based on BMI.

Corridor of KIYOSATO

Nozomi Nirasawa,Yoshihiro Yamamoto,Yuichi Tanaka 한국청소년시설환경학회 2012 한국청소년시설환경학회 학술대회 Vol.2012 No.1

Infectious peritonitis after endoscopic ultrasound-guided biliary drainage in a patient with ascites

Nozomi Okuno,Kazuo Hara,Nobumasa Mizuno,Takamichi Kuwahara,Hiromichi Iwaya,Masahiro Tajika,Tsutomu Tanaka,Makoto Ishihara,Yutaka Hirayama,Sachiyo Onishi,Kazuhiro Toriyama,Ayako Ito,Naosuke Kuraoka,Shi 소화기인터벤션의학회 2018 Gastrointestinal Intervention Vol.7 No.1

Summary of Event Bacterial, mycotic peritonitis and Candida fungemia developed in a patient with moderate ascites who had undergone endoscopic ultrasound-guided biliary drainage (EUS-BD). Antibiotics and antifungal agent were administered and ascites drainage was performed. Although the infection improved, the patient’s general condition gradually deteriorated due to aggravation of the primary cancer and he died. Teaching Point This is the first report to describe infectious peritonitis after EUS-BD. Ascites carries the potential risk of severe complications. As such, in patients with ascites, endoscopic retrograde cholangiopancreatography (ERCP) is typically preferred over EUS-BD or percutaneous drainage to prevent bile leakage. However, ERCP may not be possible in some patients with tumor invasion of the duodenum or with surgically altered anatomy. Thus, in patients with ascites who require EUS-BD, we recommend inserting the drainage tube percutaneously and draining the ascites before and after the intervention in order to prevent severe infection.

Infectious peritonitis after endoscopic ultrasound-guided biliary drainage in a patient with ascites

Nozomi Okuno,Kazuo Hara,Nobumasa Mizuno,Takamichi Kuwahara,Hiromichi Iwaya,Masahiro Tajika,Tsutomu Tanaka,Makoto Ishihara,Yutaka Hirayama,Sachiyo Onishi,Kazuhiro Toriyama,Ayako Ito,Naosuke Kuraoka,Shi 소화기인터벤션의학회 2018 International journal of gastrointestinal interven Vol.7 No.1

Summary of Event Bacterial, mycotic peritonitis and Candida fungemia developed in a patient with moderate ascites who had undergone endoscopic ultrasound-guided biliary drainage (EUS-BD). Antibiotics and antifungal agent were administered and ascites drainage was performed. Although the infection improved, the patient’s general condition gradually deteriorated due to aggravation of the primary cancer and he died. Teaching Point This is the first report to describe infectious peritonitis after EUS-BD. Ascites carries the potential risk of severe complications. As such, in patients with ascites, endoscopic retrograde cholangiopancreatography (ERCP) is typically preferred over EUS-BD or percutaneous drainage to prevent bile leakage. However, ERCP may not be possible in some patients with tumor invasion of the duodenum or with surgically altered anatomy. Thus, in patients with ascites who require EUS-BD, we recommend inserting the drainage tube percutaneously and draining the ascites before and after the intervention in order to prevent severe infection. Summary of Event Bacterial, mycotic peritonitis and Candida fungemia developed in a patient with moderate ascites who had undergone endoscopic ultrasound-guided biliary drainage (EUS-BD). Antibiotics and antifungal agent were administered and ascites drainage was performed. Although the infection improved, the patient’s general condition gradually deteriorated due to aggravation of the primary cancer and he died. Teaching Point This is the first report to describe infectious peritonitis after EUS-BD. Ascites carries the potential risk of severe complications. As such, in patients with ascites, endoscopic retrograde cholangiopancreatography (ERCP) is typically preferred over EUS-BD or percutaneous drainage to prevent bile leakage. However, ERCP may not be possible in some patients with tumor invasion of the duodenum or with surgically altered anatomy. Thus, in patients with ascites who require EUS-BD, we recommend inserting the drainage tube percutaneously and draining the ascites before and after the intervention in order to prevent severe infection.

Outcomes of Endoscopic Ultrasound-Guided Biliary Drainage in Patients Undergoing Antithrombotic Therapy

Nozomi Okuno,Kazuo Hara,Nobumasa Mizuno,Shin Haba,Takamichi Kuwahara,Hiroki Koda,Masahiro Tajika,Tsutomu Tanaka,Sachiyo Onishi,Keisaku Yamada,Akira Miyano,Daiki Fumihara,Moaz Elshair 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.4

Background/Aims: The Japan Gastroenterological Endoscopy Society (JGES) has published guidelines for gastroenterologicalendoscopy in patients undergoing antithrombotic treatment. These guidelines classify endoscopic ultrasound-guided biliary drainage(EUS-BD) as a high-risk procedure. Nevertheless, the bleeding risk of EUS-BD in patients undergoing antithrombotic therapy isuncertain. Therefore, this study aimed to assess the bleeding risk in patients undergoing antithrombotic therapy. Methods: This single-center retrospective study included 220 consecutive patients who underwent EUS-BD between January 2013and December 2018. We managed the withdrawal and continuation of antithrombotic agents according to the JGES guidelines. Wecompared the bleeding event rates among patients who received and those who did not receive antithrombotic agents. Results: A total of 18 patients (8.1 %) received antithrombotic agents and 202 patients (91.8 %) did not. Three patients experiencedbleeding events, with an overall bleeding event rate of 1.3% (3/220): one patient was in the antithrombotic group (5.5%) and twopatients were in the non-antithrombotic group (0.9%) (p=0.10). All cases were moderate. The sole thromboembolic event (0.4%) wasa cerebral infarction in a patient in the non-antithrombotic group. Conclusions: The rate of EUS-BD-related bleeding events was low. Even in patients receiving antithrombotic therapy, the bleedingevent rates were not significantly different from those in patients not receiving antithrombotic therapy.

Ferroeletiric ultra high-density data storage based on scanning nonlinear dielectric microscopy

( Yasuo Cho ),( Nozomi Odagawa ),( Kenkou Tanaka ),( Yoshiomi Hiranaga ) 정보저장시스템학회 2007 정보저장시스템학회논문집 Vol.3 No.2

자연과학편 : 유아의 체격,운동능력을 중심으로 연령증가변화를 파악하기 위한 평가차트의 구축

( Fujii Katsunori ),( Tanaka Nozomi ),김준동(JunDongKim) 한국체육학회 2014 한국체육학회지 Vol.53 No.6

본 연구는 3세에서 5세까지의 일본유아(남아: 318명, 여아: 332명)를 대상으로 체격과 운동능력결과에 최소이승근이다항식을 적용하고 연령증가에 따른 영향을 검토하였다. 측정항목은 신장, 체중, 체지방량, 근육률, 20 m달리기, 제자리멀리뛰기, 테니스공던지기, 줄 넘고 기어 나오기이었으며, 측정결과에 따라 연령증가경향이 나타난 신체적 요소에대하여 월 연령을 계산한 회귀다항식평가차트를 구축하였다. 측정결과는 3세부터 5세까지 신장·체중이 직선적 연령증가가 나타났지만, 체지방률, 근육률의 연령증가변화는 나타나지 않았다. 운동능력에서는 4종목 모두 명확한 연령증가변화가 나타났다. 월 연령을 고려하면, 신장, 체중, 20 m달리기, 제자리멀리뛰기, 테니스공던지기, 줄 넘고 기어 나오기에서 연령증가변화가 나타남으로써 1차부터 3차까지 회기다항식평가차트의 구축이 가능하게 되었다. 이러한 분석방법은 서로 다른 연령의 유아를 대상으로, 운동능력을 동시에 비교·평가할 수 있다는 장점이 있다고 사료된다. In this study we applied least squares approximation to exact monthly age over a three-year span for physique, bodycomposition and motor fitness in 3- and 5-year-old Japanese children, and examined the age composition. The subjects werepreschool children in some kindergartens of Aichi prefecture. They included 318 boys and 332 girls enrolled in the study inMay 2009. The physical attributes measured were height, weight for physique, and body fat, muscle percentage for bodycomposition, and 20 m dash, standing long jump, tennis ball throw, and jump over-and-under for motor fitness. A leastsquares approximation polynomial was applied to the measured values for physique and motor fitness at exact month of age. A change with age was seen in height and weight for both boys and girls, and from a primary to cubic regression polynomialwas valid. However, no change with age in body fat and muscle percentage were seen. Changes with age in physical fitnessitems were seen in both boys and girls for 20 m dash, standing long jump, tennis ball throw and jump over-and-under. Inphysique, cubic regression polynomials were valid for height in boys, and primary regression polynomials were valid forweight in boys and height and weight in girls. All of these are items for which from a primary regression to cubic polynomialwere valid. An attempt was made to construct a regression evaluation chart for month of age with consideration of this agecomposition.

Ferroelectric ultra high-density data storage based on scanning nonlinear dielectric microscopy

Cho, Ya-Suo,Odagawa, Nozomi,Tanaka, Kenkou,Hiranaga, Yoshiomi The Society of Information Storage Systems 2007 정보저장시스템학회논문집 Vol.3 No.2

Nano-sized inverted domain dots in ferroelectric materials have potential application in ultrahigh-density rewritable data storage systems. Herein, a data storage system is presented based on scanning non-linear dielectric microscopy and a thin film of ferroelectric single-crystal lithium tantalite. Through domain engineering, we succeeded to form an smallest artificial nano-domain single dot of 5.1 nm in diameter and artificial nano-domain dot-array with a memory density of 10.1 Tbit/$inch^2$ and a bit spacing of 8.0 nm, representing the highest memory density for rewritable data storage reported to date. Sub-nanosecond (500psec) domain switching speed also has been achieved. Next, long term retention characteristic of data with inverted domain dots is investigated by conducting heat treatment test. Obtained life time of inverted dot with the radius of 50nm was 16.9 years at $80^{\circ}C$. Finally, actual information storage with low bit error and high memory density was performed. A bit error ratio of less than $1\times10^{-4}$ was achieved at an areal density of 258 Gbit/inch2. Moreover, actual information storage is demonstrated at a density of 1 Tbit/$inch^2$.

골밀도 연령증가변화구도에 기초한 Peak Stiffness의 검증

藤井勝紀(Fujii, Katsunori),田中望(Tanaka, Nozomi),고인태(Ko, In-Tae),김준동(Kim, Jun-Dong) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.6

Bone mass is reported to peak at about the age of 15 to 17 years, but the peak in bone density is not clear. Therefore, the pubertal peak in bone density is also unknown. In this study, using a method of assessing bone density by stiffness coefficient, we applied a least squares approximation polynomial to stiffness coefficient age distance values from the first grade of elementary school until the third year of junior high school (ninth grade), and investigated the changing trends with age. The results showed the age-related changes in the stiffness coefficient, BUA value, and SOS value based on third order least squares approximation polynomials. The peaks determined from the second-order polynomial curve of the first derivative were 11.4 years old with the stiffness coefficient and near 11.5 years old with the BUA and SOS values. Next, to identify the pubertal peak (maximum peak velocity: MPV) of the stiffness coefficient, wavelet interpolation was applied and peak stiffness was derived. The MPV age of the stiffness coefficient was 11.2 years old. The MPV age of height is 12.6 years old and the MPV of weight is 13.4 years old. This MPV age for bone density is earlier that the MPV ages for height and weight, and it is conjectured that on average this is related to the growth of the length of the lower limbs (lower legs). On the other hand, the possibility cannot be ruled out that substantial development of bone density promotes growth in height.

아동ㆍ청소년기 신체적 발육ㆍ발달곡선에 관한 분석

藤井勝紀(Fujii, Katsunori),田中望(Tanaka, Nozomi),김준동(Kim, Jun-Dong) 한국체육과학회 2012 한국체육과학회지 Vol.21 No.1

In the present study, annual change of physical growth and development was examined during school age. The wavelet interpolation method was applied to cross-sectional data from 6 to 17 years in 2000 and 2005, based on the records of the physique (height, weight, sitting height, leg length), physical strength and motor ability (grip strength, side step, trunk bending, sit-up, 50m dash, standing long jump and handball throwing) announced by Ministry of Education, Science and Technology every year. As the results, the growth distance and velocity curves were analyzed in the physique. In physical strength and motor ability, the developmental distance and velocity curves were also analyzed, and the change of physical strength and motor ability with age was examined. With judging from the growth velocity curve of physique, the growth velocities in leg length was the fastest among the physique in both 2000 and 2005. Moreover, the age at MPV of leg length was also the earliest, and that of BMI was the latest in both 2000 and 2005. It was shown that MPV of grip strength appeared almost in a simultaneous period with MPV of height, and trunk bending and sit-up appeared after MPV of height.