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94 Results Found

  • Article
  • Open Access
8 Citations
6,015 Views
14 Pages

21 November 2021

The slogans of the 2020 Tokyo Olympics were “symbol of resilience from the Great East Japan Earthquake” and “Compact Olympics”. The Olympics were also expected to demonstrate “gender equality” and to enhance sustai...

  • Article
  • Open Access
14 Citations
3,861 Views
14 Pages

Tokyo 2020: A Sociodemographic and Psychosocial Characterization of the Portuguese Paralympic Team

  • Tânia Mira,
  • Diogo Monteiro,
  • Aldo M. Costa,
  • Pedro Morouço,
  • Rui Matos and
  • Raúl Antunes

The importance of practicing sports and its impact on the quality of life of people with disabilities is fundamental. Characterizing subjective well-being, resilience, and social influence in the practice of adapted sports, namely in those who partic...

  • Article
  • Open Access
40 Citations
12,155 Views
16 Pages

Microclimate Variation and Estimated Heat Stress of Runners in the 2020 Tokyo Olympic Marathon

  • Eichi Kosaka,
  • Akiko Iida,
  • Jennifer Vanos,
  • Ariane Middel,
  • Makoto Yokohari and
  • Robert Brown

The Tokyo 2020 Olympic Games will be held in July and August. As these are the hottest months in Tokyo, the risk of heat stress to athletes and spectators in outdoor sporting events is a serious concern. This study focuses on the marathon races, whic...

  • Article
  • Open Access
13 Citations
10,474 Views
16 Pages

3 October 2020

The 2020 Tokyo Olympics have been postponed due to the novel coronavirus (COVID-19) pandemic. The implications for industries related to the Olympics—tourism, hotels and restaurants, and others—are expected to be affected by reduced deman...

  • Article
  • Open Access
745 Views
12 Pages

Relative Age Effect in Olympic Karate: Evidence from Tokyo 2020

  • Sofia Serafini,
  • Simone Ciaccioni,
  • Gabriele Mascherini and
  • Pascal Izzicupo

Background: The Relative Age Effect (RAE) refers to the advantage conferred to athletes born earlier within a selection year. In karate, particularly at the highest level, evidence is lacking. This study aimed to examine the presence of RAE among mal...

  • Article
  • Open Access
8 Citations
3,605 Views
13 Pages

3 February 2022

Previous studies have not assessed the causal effect of the Olympic Games on the spread of pandemics. Using the synthetic control method and the national public city data in Japan recorded from February to September 2021, we estimated the causal effe...

  • Article
  • Open Access
10 Citations
4,511 Views
15 Pages

17 February 2023

In the current cross-media ecosystem, which is characterized by technological disruption, the prominent relationship between public service media (PSM), sport and cultural citizenship is undergoing a profound transformation. Currently, PSM can utiliz...

  • Article
  • Open Access
19 Citations
5,811 Views
13 Pages

29 April 2020

Weather and climate conditions can be decisive regarding travel plans or outdoor events, especially for sport events. The Olympic Games 2020, postponed to 2021, will take place in Tokyo at a time which is considered to be the hottest and most humid t...

  • Article
  • Open Access
3 Citations
6,034 Views
16 Pages

The COVID-19 pandemic has negatively impacted sporting activities across the world. However, practical training strategies for athletes to reduce the risk of infection during the pandemic have not been definitively studied. The purpose of this report...

  • Article
  • Open Access
3 Citations
11,142 Views
7 Pages

Aerodynamic Characteristics of New Volleyball for the 2020 Tokyo Olympics

  • Sungchan Hong,
  • Hiroki Ozaki,
  • Keita Watanabe and
  • Takeshi Asai

7 May 2020

The pattern of a modern volleyball is greatly different from that of a conventional volleyball, with several changes being made to the shape and design of the surface on the ball. Furthermore, at the 2020 Tokyo Olympics, a new volleyball (V200W; Mika...

  • Article
  • Open Access
32 Citations
8,132 Views
12 Pages

Quantifying Thermal Stress for Sport Events—The Case of the Olympic Games 2020 in Tokyo

  • Andreas Matzarakis,
  • Dominik Fröhlich,
  • Stéphane Bermon and
  • Paolo Emilio Adami

5 December 2018

The effect of weather on sport events is largely discussed in the sports medicine and exercise physiology context. It is important, both for event organizers and for medical staff, to know whether the competition is happening at a time and place with...

  • Article
  • Open Access
8 Citations
5,903 Views
16 Pages

Heat stress is an issue for marathon races in the summer, such as the one planned for the 2020 Tokyo Summer Olympic games. The Tokyo Metropolitan Government is planning to grow existing street trees’ canopies to enlarge their shade to reduce air temp...

  • Article
  • Open Access
19 Citations
5,307 Views
9 Pages

Visualization of Climate Factors for Sports Events and Activities–The Tokyo 2020 Olympic Games

  • Andreas Matzarakis,
  • Dominik Fröhlich,
  • Stéphane Bermon and
  • Paolo Emilio Adami

23 September 2019

Detailed climate information in an easily interpretable form is demanded by the general public, as well as by decision-makers on different planning levels. One example is the group of planners in the field of sports and tourism. A promising approach...

  • Article
  • Open Access
5 Citations
4,212 Views
31 Pages

Risk Assessment of Heat Stroke during the Marathon of the Tokyo 2020 Olympics in Sapporo, Hokkaido

  • Osawa Hisato,
  • Taro Mori,
  • Kouichi Shinagawa,
  • Satoshi Nakayama,
  • Hayato Hosobuchi and
  • Emad Mushtaha

22 February 2023

A marathon is a grueling endurance race, and runners are at risk of heatstroke. Therefore, the thermal environment of the marathon course should be accurately assessed. Solar radiation, a factor in the thermal environment, is particularly affected by...

  • Review
  • Open Access
4 Citations
2,724 Views
14 Pages

Planning the medical services for the triathlon competition at the 2020 Tokyo Olympic and Paralympic Games was predicted to be challenging because of possible last-minute changes related to the COVID-19 pandemic and abnormally high temperatures. Ther...

  • Article
  • Open Access
1 Citations
6,228 Views
19 Pages

Balancing Public & Economic Health in Japan during the COVID-19 Pandemic: A Descriptive Analysis

  • Gainha Kim,
  • Justine M. Natuplag,
  • Sui Jin Lin,
  • Jinyi Feng and
  • Nicolas Ray

Despite loose restrictions and a low mortality rate due to COVID-19, Japan faced the challenge of stabilizing its economy during the pandemic. Here, we analyzed how the Japanese government attempted to maintain a balance between the health of the pop...

  • Article
  • Open Access
25 Citations
3,970 Views
22 Pages

9 December 2020

Publicly funded sport events are partially justified based on positive social impacts. Past research generally measured social impact for a generic and global “other” with claims such as “Events create new friendships in the communi...

  • Article
  • Open Access
1,161 Views
8 Pages

Decisive Techniques for Ippon in Elite Women’s Judo: A Tactical Analysis from the Rio 2016 and Tokyo 2020 Olympic Games

  • Alex Ojeda-Aravena,
  • David Moronta,
  • Bibi Calvo-Rico,
  • Jairo Azócar-Gallardo and
  • José Manuel García-García

2 July 2025

Olympic women’s judo has increased in complexity and competitiveness, demanding detailed tactical analysis. This observational study aimed to examine the relationship between the results of combats (Wazari [half point] vs. Ippon [full point]) a...

  • Article
  • Open Access
7,343 Views
9 Pages

Footstrike Pattern and Cadence of the Marathon Athletes at the Tokyo 2020 Olympic Games

  • Javier Gamez-Paya,
  • Arian Ramón Aladro-Gonzalvo,
  • Diana Gallego-de Marcos,
  • Carlos Villarón-Casales and
  • José Luis Lopez-del Amo

30 May 2023

Background: The footstrike pattern and cadence are two crucial variables associated with sports performance and injury risks. This study aimed to analyze the footstrike pattern and cadence of male elite athletes who participated in the Tokyo Olympic...

  • Communication
  • Open Access
11 Citations
2,988 Views
9 Pages

Latest Findings on Minimally Invasive Anatomical Liver Resection

  • Yoshiki Fujiyama,
  • Taiga Wakabayashi,
  • Kohei Mishima,
  • Malek A. Al-Omari,
  • Marco Colella and
  • Go Wakabayashi

9 April 2023

Minimally invasive liver resection (MILR) is being widely utilized owing to recent advancements in laparoscopic and robot-assisted surgery. There are two main types of liver resection: anatomical (minimally invasive anatomical liver resection (MIALR)...

  • Brief Report
  • Open Access
21 Citations
6,936 Views
12 Pages

COVID-19 and Heat Illness in Tokyo, Japan: Implications for the Summer Olympic and Paralympic Games in 2021

  • Kazuki Shimizu,
  • Stuart Gilmour,
  • Hiromi Mase,
  • Phuong Mai Le,
  • Ayaka Teshima,
  • Haruka Sakamoto and
  • Shuhei Nomura

The 2020 summer Olympic and Paralympic Games in Tokyo were postponed to July–September 2021 due to the coronavirus disease 2019 (COVID-19) pandemic. While COVID-19 has emerged as a monumental health threat for mass gathering events, heat illness must...

  • Article
  • Open Access
3 Citations
3,978 Views
11 Pages

Comparative Study of Helicobacter pylori-Infected Gastritis in Okinawa and Tokyo Based on the Kyoto Classification of Gastritis

  • Shotaro Oki,
  • Tsutomu Takeda,
  • Mariko Hojo,
  • Ryota Uchida,
  • Nobuyuki Suzuki,
  • Daiki Abe,
  • Atsushi Ikeda,
  • Yoichi Akazawa,
  • Hiroya Ueyama and
  • Akihito Nagahara
  • + 3 authors

28 September 2022

The incidence of gastric cancer in Okinawa Prefecture is the lowest in Japan, which is attributed to differences in strains of Helicobacter pylori in Okinawa and other prefectures in Japan. Our aim was to compare the endoscopic findings of H. pylori-...

  • Article
  • Open Access
5 Citations
3,336 Views
16 Pages

The Chaotic Behavior of the Spread of Infection during the COVID-19 Pandemic in Japan

  • Nabin Sapkota,
  • Atsuo Murata,
  • Waldemar Karwowski,
  • Mohammad Reza Davahli,
  • Krzysztof Fiok,
  • Awad M. Aljuaid,
  • Tadeusz Marek and
  • Tareq Ahram

In December 2019, China reported a new virus identified as SARS-CoV-2, causing COVID-19, which soon spread to other countries and led to a global pandemic. Although many countries imposed strict actions to control the spread of the virus, the COVID-1...

  • Article
  • Open Access
1 Citations
2,055 Views
17 Pages

Mastering the information of arena environment is the premise for athletes to optimize their patterns of physical load. Therefore, improving the forecast accuracy of the arena conditions is an urgent task in competitive sports. This paper excavates t...

  • Feature Paper
  • Article
  • Open Access
44 Citations
6,709 Views
23 Pages

25 November 2017

Energy consumption reduction under changing climate conditions is a major challenge in buildings design, where excessive energy consumption creates an economic and environmental burden. Improving thermal performance of the buildings through support a...

  • Article
  • Open Access
13 Citations
5,561 Views
17 Pages

24 January 2021

Research on stress related to the COVID-19 pandemic has been dominated by the cases of healthcare workers, students, patients, and their stress during the COVID-19 pandemic. This study examined the relationship between the amount of stress change und...

  • Study Protocol
  • Open Access
2,214 Views
16 Pages

Study Protocol for the Japan Pregnancy, Eating, Activity, Cohort (J-PEACH) Study: Investigating Perinatal Maternal Lifestyle and Infant Health

  • Megumi Haruna,
  • Megumi Fujita,
  • Masayo Matsuzaki,
  • Mie Shiraishi,
  • Naoko Hikita,
  • Yoshiko Suetsugu,
  • Yoko Sato,
  • Kaori Yonezawa,
  • Moeko Tanaka and
  • Satoshi Sasaki
  • + 5 authors

1 November 2025

The prevalence of low-birth-weight infants has increased over the past 40 years to approximately 9–10% of Japanese live births. This study aims to identify healthy lifestyle behaviors and psychosocial factors contributing to appropriate perinat...

  • Article
  • Open Access
3 Citations
4,251 Views
22 Pages

This study aimed to analyze the impact of hosting large events on the spread of pandemics, taking Tokyo Olympics 2020 as a case study. A risk assessment method for the whole organization process was established, which could be used to evaluate the ef...

  • Article
  • Open Access
1 Citations
940 Views
10 Pages

Reduction in Anthropogenic CO2 Emissions Detected Through Two Decades of Observation in the Tokyo Metropolitan Area

  • Toshimasa Ohara,
  • Yosuke Muto,
  • Junichi Kurokawa,
  • Tomohide Shimada and
  • Mitsuo Uematsu

24 March 2025

Reducing CO2 emissions is a global goal aimed at mitigating climate change, but such reductions must be scientifically tracked and verified based on long-term observational data. We analyzed the long-term trend in CO2 concentration observed for a per...

  • Article
  • Open Access
2 Citations
3,015 Views
20 Pages

7 January 2025

This study examined the impact of sea surface temperature (SST) on urban temperature across four cities located in three different countries (United States of America, Japan, and Morocco), all at nearly the same latitude, focusing on the summer seaso...

  • Feature Paper
  • Article
  • Open Access
35 Citations
10,248 Views
16 Pages

Use of Urban Green Spaces in the Context of Lifestyle Changes during the COVID-19 Pandemic in Tokyo

  • Takahiro Yamazaki,
  • Akiko Iida,
  • Kimihiro Hino,
  • Akito Murayama,
  • U Hiroi,
  • Toru Terada,
  • Hideki Koizumi and
  • Makoto Yokohari

1 September 2021

The coronavirus disease 2019 (COVID-19) pandemic of 2020 drastically changed urban lifestyles. Workers were forced to minimize commuting to their workplaces, older adults were banned from using meeting facilities, and children were prohibited from go...

  • Article
  • Open Access
10 Citations
5,136 Views
17 Pages

31 October 2022

This study aimed to estimate and compare the spatial-temporal variation in health impact attributable to PM2.5, including the major particulate constituents and anthropogenic emission sectors of PM2.5, and ozone in the Beijing–Tianjin–Heb...

  • Article
  • Open Access
1 Citations
1,849 Views
20 Pages

17 February 2025

In this study, we analyzed daily time series data on newly confirmed COVID-19 cases in each prefecture of Japan to investigate the mechanisms driving the virus’s spread. The dataset spans from 20 January 2020 to 7 May 2023, covering 1204 days a...

  • Proceeding Paper
  • Open Access
3,173 Views
6 Pages

A Customised Finn Dinghy Rudder for Optimal Olympic Performance

  • Michael Stadler,
  • Brina Blinzler,
  • Adam Persson,
  • Christian Finnsgård,
  • Max Salminen and
  • Martin Fagerström

Because of the long history of the Finn Dinghy sailing class, the difference between a gold medal and a mediocre result often comes down to personal mistakes of the sailor, or to who has the most optimised equipment. Regarding the latter, the Finn cl...

  • Article
  • Open Access
9 Citations
5,481 Views
12 Pages

Managing Global Smart Cities in an Era of 21st Century Challenges

  • Milan Kubina,
  • Dominika Šulyová and
  • Josef Vodák

1 March 2021

Globalization, integration and liberalism are concepts that have been used since ancient history and have influenced urban governance to this day. The aim of the article is to find out, based on the historical development of globalization, Friedmann’...

  • Article
  • Open Access
2 Citations
2,625 Views
13 Pages

Winter Production of Asian Leafy Greens in High Tunnels Using Biodegradable Mulches

  • Tongyin Li,
  • Geoffrey T. Lalk,
  • Qianwen Zhang,
  • Zhiheng Xing and
  • Guihong Bi

Use of season extension tools such as high tunnels and diverse vegetable crops have been crucial in improving competitiveness of vegetable growers in Mississippi who operate on small- to medium-sized farms. Chinese cabbage, also known as pak choy or...

  • Perspective
  • Open Access
1 Citations
3,761 Views
9 Pages

A Perspective on the 6th International Conference on Sports Concussion

  • Haruo Nakayama,
  • Yu Hiramoto and
  • Satoshi Iwabuchi

The International Conference on Sports Concussion, held every four years since 2001, has been instrumental in forming the international consensus on sports-related concussions. However, due to the unprecedented global pandemic of COVID-19, not only t...

  • Article
  • Open Access
7 Citations
4,151 Views
10 Pages

The Changes in Visual Acuity Values of Japanese School Children during the COVID-19 Pandemic

  • Shingo Noi,
  • Akiko Shikano,
  • Natsuko Imai,
  • Fumie Tamura,
  • Ryo Tanaka,
  • Tetsuhiro Kidokoro and
  • Mari Yoshinaga

The coronavirus disease 2019 (COVID-19) pandemic may result in a greater decrease in visual acuity (VA) among Japanese children. Our study aimed to examine Japanese children’s VA during the pandemic. VA data were collected using standard eye te...

  • Proceeding Paper
  • Open Access
2 Citations
1,563 Views
10 Pages

The purpose of this paper is to identify econometric models likely to highlight the impact of the COVID-19 pandemic on the financial markets. The Markov-switching “GARCH and EGARCH” models are suitable for analyzing and forecasting the se...

  • Article
  • Open Access
8 Citations
4,597 Views
24 Pages

19 January 2020

This study examines the performance of Japanese electric power companies from 2003 to 2020. We use an observed data set from 2003 to 2015 and a forecasted data set from 2016 to 2020. The Japanese deregulation of the industry needs to be completed by...

  • Article
  • Open Access
11 Citations
4,277 Views
12 Pages

The study identifies the impact of the changes in human mobility due to the announcement of the state of emergency to cope with the COVID-19 pandemic on the Tokyo gasoline, diesel, and kerosene markets. Indices reflecting the movements in the visits...

  • Article
  • Open Access
2 Citations
3,940 Views
27 Pages

This study examines the impact of cost stickiness on research and development (R&D) investment and corporate performance in Japanese firms. Additionally, it investigates the moderating effect of managerial overconfidence and financial slack. To d...

  • Article
  • Open Access
14,755 Views
25 Pages

10 September 2021

The 2020 Summer Olympic Games in Tokyo offer a fitting and timely point of departure to consider the religion-based exclusion of women and, by extension, to peer into the nation-culture-religion-gender nexus in Japan. The Japan Sumo Association, a qu...

  • Article
  • Open Access
8 Citations
4,900 Views
12 Pages

Association between Social Integration and Face Mask Use Behavior during the SARS-CoV-2 Pandemic in Japan: Results from U-CORONA Study

  • Nobutoshi Nawa,
  • Yui Yamaoka,
  • Yuna Koyama,
  • Hisaaki Nishimura,
  • Shiro Sonoda,
  • Jin Kuramochi,
  • Yasunari Miyazaki and
  • Takeo Fujiwara

Face mask use is a critical behavior to prevent the spread of SARS-CoV-2. We aimed to evaluate the association between social integration and face mask use during the COVID-19 pandemic in a random sample of households in Utsunomiya City, Greater Toky...

  • Article
  • Open Access
4,514 Views
35 Pages

13 September 2024

The Olympic Games are a sporting event and a catalyst for urban development in their host city. In this study, we utilized remote sensing and GIS techniques to examine the impact of the Olympic infrastructure on the surface temperature of urban areas...

  • Article
  • Open Access
7 Citations
3,726 Views
10 Pages

Accelerometer-Measured Physical Activity and Sedentary Time among Children in Japan before and during COVID-19: A Cross-Sectional and Longitudinal Analysis

  • Chiaki Tanaka,
  • Akiko Shikano,
  • Natsuko Imai,
  • Kar Hau Chong,
  • Steven J. Howard,
  • Kosuke Tanabe,
  • Anthony D. Okely,
  • Ellie K. Taylor and
  • Shingo Noi

This study examined changes in physical activity (PA), sedentary behavior (SB), screen time, sleep, and executive function among Japanese preschoolers between COVID-19 pre-pandemic and pandemic periods, using cross-sectional and longitudinal data. Ac...

  • Article
  • Open Access
7 Citations
3,272 Views
21 Pages

This study clarifies how risks spread across economic sectors and indicates the sectors that are the most affected to help investors with asset allocation and to support them in risk management. Although the Japanese stock market is one of the relati...

  • Review
  • Open Access
57 Citations
11,066 Views
18 Pages

30 July 2021

The field of gas chromatography-mass spectrometry (GC-MS) in the analysis of chemical warfare agents (CWAs), specifically those involving the organophosphorus-based nerve agents (OPNAs), is a continually evolving and dynamic area of research. The eve...

  • Article
  • Open Access
10 Citations
2,672 Views
10 Pages

Male-Dominant Hepatitis A Outbreak Observed among Non-HIV-Infected Persons in the Northern Part of Tokyo, Japan

  • Masayuki Honda,
  • Hiroyuki Asakura,
  • Tatsuo Kanda,
  • Yoshiko Somura,
  • Tomotaka Ishii,
  • Yoichiro Yamana,
  • Tomohiro Kaneko,
  • Taku Mizutani,
  • Hiroshi Takahashi and
  • Mitsuhiko Moriyama
  • + 9 authors

29 January 2021

Recently, we experienced an outbreak of acute hepatitis A virus (HAV) infection between 2018 and 2020. Herein, we describe this male-dominant HAV infection outbreak observed among non-human immunodeficiency virus (HIV)-infected persons in the norther...

  • Article
  • Open Access
6 Citations
3,890 Views
13 Pages

27 October 2022

Whether orthodontic treatment can change the preferred chewing side (PCS) is unknown. This study examined (1) if the PCS changes after orthodontic treatment and (2) which factors contribute to this change. Two hundred fifty patients who visited the o...

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