{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:39:07Z","timestamp":1760146747280,"version":"build-2065373602"},"reference-count":41,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2024,12,3]],"date-time":"2024-12-03T00:00:00Z","timestamp":1733184000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Science, Innovation and Universities of the Government of Spain in the call Retos-Colaboraci\u00f3n 2017","award":["RTC-2017-6145-1, 2017"],"award-info":[{"award-number":["RTC-2017-6145-1, 2017"]}]},{"name":"UCAM Universidad Cat\u00f3lica de Murcia","award":["RTC-2017-6145-1, 2017"],"award-info":[{"award-number":["RTC-2017-6145-1, 2017"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Outdoor fitness equipment (OFE) are strength training installations comparable to those found in indoor gyms but are located outdoors with greater accessibility. However, the scientific evidence supporting their effectiveness remains limited. The objective of this study was to analyze and compare the electromyographic (EMG) activity of upper limb muscle groups during the use of a traditional seated chest press (SCP) machine, a classic OFE SCP (OFE-SCP), and a new OFE-SCP featuring a load selector system (BIOFIT-SCP). The sample was composed of 34 active young men. EMG activity of five muscle groups was analyzed: the anterior deltoid (AD), the clavicular (CP) and sternal (SP) heads of the pectoralis major, and the lateral (LHTB) and long heads of the triceps brachii (LongHTB), under different intensities. The OFE-SCP showed significantly lower EMG activity compared with the SCP and BIOFIT-SCP in all muscles and phases (p &lt; 0.001). Significantly lower EMG activity for the SP in all three phases was found on the BIOFIT-SCP compared with the SCP (p &lt; 0.001), but it was significantly higher for the LHTB and AD in the BIOFIT-SCP compared with the SCP during the full and concentric phases (p &lt; 0.05 to p &lt; 0.001). In conclusion, training with the OFE-SCP generates less EMG activity than traditional machine training, while, in general, BIOFIT-SCP proved effective for strength training comparable to the SCP.<\/jats:p>","DOI":"10.3390\/s24237740","type":"journal-article","created":{"date-parts":[[2024,12,4]],"date-time":"2024-12-04T06:38:25Z","timestamp":1733294305000},"page":"7740","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Electromyographic Comparison of Traditional Fitness Machines, Outdoor Fitness Equipment Without Load Selectors, and Outdoor Fitness Equipment with Load Selectors in a Seated Chest Press Exercise in Trained Young Men"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9582-208X","authenticated-orcid":false,"given":"Tom\u00e1s","family":"Abelleira-Lamela","sequence":"first","affiliation":[{"name":"Facultad del Deporte, UCAM Universidad Cat\u00f3lica de Murcia, 30107 Murcia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1624-5013","authenticated-orcid":false,"given":"Pablo Jorge","family":"Marcos-Pardo","sequence":"additional","affiliation":[{"name":"SPORT Research Group (CTS-1024), CIBIS (Centro de Investigaci\u00f3n para el Bienestar y la Inclusi\u00f3n Social), University of Almeria, 04120 Almeria, Spain"},{"name":"Department of Education, Faculty of Education Sciences, University of Almeria, 04120 Almeria, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4527-3865","authenticated-orcid":false,"given":"J. Arturo","family":"Abraldes","sequence":"additional","affiliation":[{"name":"Research Group Movement Sciences and Sport (MS&SPORT), Department of Physical Activity and Sport Sciences, Faculty of Sport Sciences, University of Murcia, 30720 San Javier, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7291-3306","authenticated-orcid":false,"given":"Noelia","family":"Gonz\u00e1lez-G\u00e1lvez","sequence":"additional","affiliation":[{"name":"Facultad del Deporte, UCAM Universidad Cat\u00f3lica de Murcia, 30107 Murcia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5826-4821","authenticated-orcid":false,"given":"Alejandro","family":"Espeso-Garc\u00eda","sequence":"additional","affiliation":[{"name":"Facultad del Deporte, UCAM Universidad Cat\u00f3lica de Murcia, 30107 Murcia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4519-1635","authenticated-orcid":false,"given":"Francisco","family":"Esparza-Ros","sequence":"additional","affiliation":[{"name":"Injury Prevention in Sport Research Group, International Chair of Kinanthropometry, UCAM Universidad Cat\u00f3lica de Murcia, 30107 Murcia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2708-4817","authenticated-orcid":false,"given":"Raquel","family":"Vaquero-Crist\u00f3bal","sequence":"additional","affiliation":[{"name":"Research Group Movement Sciences and Sport (MS&SPORT), Department of Physical Activity and Sport Sciences, Faculty of Sport Sciences, University of Murcia, 30720 San Javier, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,12,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Armstrong, R., Baltzopoulos, V., Langan-Evans, C., Clark, D., Jarvis, J., Stewart, C., and O\u2019Brien, T. 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