{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T06:54:47Z","timestamp":1778741687417,"version":"3.51.4"},"reference-count":69,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2020,7,6]],"date-time":"2020-07-06T00:00:00Z","timestamp":1593993600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Land, Infrastructure, Transport and Tourism in Japan","award":["FY2017-FY2018 research and development for construction technology subsidy program policy issue solving type"],"award-info":[{"award-number":["FY2017-FY2018 research and development for construction technology subsidy program policy issue solving type"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>It is important for construction companies to sustain a productive workforce without sacrificing its health and safety. This study aims to develop a practical judgement method to estimate the workload risk of individual construction workers. Based on studies, we developed a workload model comprising a hygrothermal environment, behavioral information, and the physical characteristics of workers). The construction workers\u2019 heart rate and physical activity were measured using the data collected from a wearable device equipped with a biosensor and an acceleration sensor. This study is the first report to use worker physical activity, age, and the wet bulb globe temperature (WBGT) to determine a worker\u2019s physical workload. The accuracy of this health risk judgment result was 89.2%, indicating that it is possible to easily judge the health risk of workers even in an environment where it is difficult to measure the subject in advance. The proposed model and its findings can aid in monitoring the health impacts of working conditions during construction activities, and thereby contribute toward determining workers\u2019 health damage. However, the sampled construction workers are 12 workers, further studies in other working conditions are required to accumulate more evidence and assure the accuracy of the models.<\/jats:p>","DOI":"10.3390\/s20133786","type":"journal-article","created":{"date-parts":[[2020,7,6]],"date-time":"2020-07-06T11:07:42Z","timestamp":1594033662000},"page":"3786","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Practical Judgment of Workload Based on Physical Activity, Work Conditions, and Worker\u2019s Age in Construction Site"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5650-7968","authenticated-orcid":false,"given":"Nobuki","family":"Hashiguchi","sequence":"first","affiliation":[{"name":"Graduate School of Technology Management, Ritsumeikan University, Osaka 567-8570, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kota","family":"Kodama","sequence":"additional","affiliation":[{"name":"Graduate School of Technology Management, Ritsumeikan University, Osaka 567-8570, Japan"},{"name":"Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences Hokkaido University, Sapporo 060-0817, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2740-5537","authenticated-orcid":false,"given":"Yeongjoo","family":"Lim","sequence":"additional","affiliation":[{"name":"Faculty of Business Administration, Ritsumeikan University, Osaka 567-8570, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chang","family":"Che","sequence":"additional","affiliation":[{"name":"Kumagai Gumi Co., Ltd., Tokyo 162-0856, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shinichi","family":"Kuroishi","sequence":"additional","affiliation":[{"name":"Kumagai Gumi Co., Ltd., Tokyo 162-0856, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasuhiro","family":"Miyazaki","sequence":"additional","affiliation":[{"name":"Kumagai Gumi Co., Ltd., Tokyo 162-0856, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Taizo","family":"Kobayashi","sequence":"additional","affiliation":[{"name":"Department of Environmental Systems, College of Science and Engineering, Ritsumeikan University, Shiga 525-8577, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shigeo","family":"Kitahara","sequence":"additional","affiliation":[{"name":"Kumagai Gumi Co., Ltd., Tokyo 162-0856, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazuyoshi","family":"Tateyama","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering, College of Science and Engineering, Ritsumeikan University, Shiga 525-8577, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,7,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"104805","DOI":"10.1016\/j.ssci.2020.104805","article-title":"Safety management in construction: 20 years of risk modeling","volume":"129","author":"Alkaissy","year":"2020","journal-title":"Saf. 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