Párraga Montilla, Juan AGarcía Ramos, AmadorCastaño Zambudio, AdriánCapelo Ramírez, FernandoGonzález Hernández, Jorge MCordero Rodríguez, Yaiza AdelaJiménez Reyes, PedroNational Strength and Conditioning Research2024-02-062024-02-062018Párraga-Montilla, J. A., García-Ramos, A., Castaño-Zambudio, A., Capelo-Ramírez, F., González-Hernández, J. M., Cordero-Rodríguez, Y., & Jiménez-Reyes, P. (2020). Acute and Delayed Effects of a Resistance Training Session Leading to Muscular Failure on Mechanical, Metabolic, and Perceptual Responses. Journal of strength and conditioning research, 34(8), 2220-2226. https://doi.org/10.1519/JSC.00000000000027121064-801110.1519/JSC.0000000000002712https://hdl.handle.net/20.500.14352/99389Párraga-Montilla, JA, García-Ramos, A, Castaño-Zambudio, A, Capelo-Ramírez, F, González-Hernández, JM, Cordero-Rodríguez, Y, and Jiménez-Reyes, P. Acute and delayed effects of a resistance training session leading to muscular failure on mechanical, metabolic, and perceptual responses. J Strength Cond Res 34(8): 2220-2226, 2020-This study explored the acute and delayed (24 and 48 hours after exercise) effects of a resistance training session leading to muscular failure. Eleven resistance-trained men completed a training session consisting on 3 sets of repetitions to failure during the back-squat exercise performed at the maximum possible speed with a load equivalent to a mean propulsive velocity (MPV) of 1 m·s (≈60% of 1 repetition maximum). A number of mechanical (number of repetitions and starting MPV of the set, MPV achieved against the 1MPV load, countermovement jump [CMJ] height, and handgrip strength), metabolic (lactate, uric acid, and ammonia concentrations), and perceptual (OMNI-RES perceived exertion) variables were measured. The results revealed (a) a decrease of 38.7% in set 2 and 54.7% in set 3 of the number of repetitions performed compared with the first set (p < 0.05), (b) a reduction in the MPV of the repetitions and an increase in lactate concentration and OMNI-RES values with the succession of sets (p < 0.05), (c) comparable decrements in CMJ height after the 3 sets (25-32%), (d) a decrease in CMJ height (p < 0.05; 6.7-7.9%) and in the MPV attained against the 1MPV load (p < 0.05; 13-14%) after 24 and 48 hours of completing the training session, but no significant changes were observed in handgrip strength (p > 0.05; <2%), and (e) uric acid and ammonia concentrations above the basal levels (p < 0.05). The large decrements in mechanical performance together with the high metabolic stress discourage the frequent use of resistance training sessions leading to muscular failureengAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal article1533-4287https://doi.org/10.1519/JSC.000000000000271229952872https://www.scopus.com/record/display.uri?eid=2-s2.0-85088885193&origin=resultslisthttps://journals.lww.com/nsca-jscr/pages/default.aspxhttps://pubmed.ncbi.nlm.nih.gov/29952872/https://scholar.google.com/scholar_lookup?title=Acute+and+Delayed+Effects+of+a+Resistance+Training+Session+Leading+to+Muscular+Failure+on+Mechanical%2C+Metabolic%2C+and+Perceptual+Responses&author=P%C3%A1rraga-Montilla%2C+J.A.&author=Garc%C3%ADa-Ramos%2C+A.&author=Casta%C3%B1o-Zambudio%2C+A.&author=Capelo-Ram%C3%ADrez%2C+F.&author=Gonz%C3%A1lez-Hern%C3%A1ndez%2C+J.M.&author=Cordero-Rodr%C3%ADguez%2C+Y.&author=Jim%C3%A9nez-Reyes%2C+P.&publication_year=2020&journal=Journal+of+strength+and+conditioning+research&volume=34&issue=8&pages=2220-2226&doi=10.1519/JSC.0000000000002712&pmid=29952872&issn=1533-4287&hl=eshttps://produccioncientifica.ucm.es/documentos/5f5206f52999524f71a79371restricted access796372.879.6371.337.012Back squatJump heightMovement velocityVelocity-based trainingEducación física y deportiva5899 Otras Especialidades Pedagógicas5801.07 Métodos Pedagógicos