{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,17]],"date-time":"2025-09-17T16:41:27Z","timestamp":1758127287080,"version":"3.40.5"},"reference-count":11,"publisher":"Wiley","license":[{"start":{"date-parts":[[2019,12,31]],"date-time":"2019-12-31T00:00:00Z","timestamp":1577750400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100005632","name":"National Centre for Research and Development","doi-asserted-by":"crossref","award":["POIR.01.01.01-00-1324\/17"],"award-info":[{"award-number":["POIR.01.01.01-00-1324\/17"]}],"id":[{"id":"10.13039\/501100005632","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Sensors"],"published-print":{"date-parts":[[2019,12,31]]},"abstract":"<jats:p>The paper is devoted to the problem of counting repetitions and automatic weight stack detection in a weightlifting machine used for weight training. Some weightlifting machines include a weight stack that can be adjusted by a user. For example, the user can choose to increase or reduce the weight load using the weight stack, thus changing the difficulty level of a particular exercise. Users may want to perform a desired number of repetitions of an exercise or to perform an exercise with a desired range of motion when using such weightlifting machines. From a medical point of view, it is often required that an exact number of repetitions of a given load are performed in order to aid in a prompt recovery. This paper describes a complete design of the system and the algorithm that allows one to collect data from such a machine. Data can then be used for various purposes: in overviews and statistical analysis of a number of workouts. The approach presented in this paper is part of an application for European patent number 18461537.5-1126.<\/jats:p>","DOI":"10.1155\/2019\/1787351","type":"journal-article","created":{"date-parts":[[2019,12,31]],"date-time":"2019-12-31T18:30:40Z","timestamp":1577817040000},"page":"1-14","source":"Crossref","is-referenced-by-count":3,"title":["Sensor-Based Weightlifting Workout Assisting System Design and Its Practical Implementation"],"prefix":"10.1155","volume":"2019","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3491-4113","authenticated-orcid":true,"given":"Marcel","family":"Luzar","sequence":"first","affiliation":[{"name":"Institute of Control and Computation Engineering, University of Zielona G\u00f3ra, ul. 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