RT Journal Article T1 Acute responses to traditional and cluster-set squat training with and without blood flow restriction A1 Cornejo Daza, Pedro Jesús A1 Sánchez-Valdepeñas Mateos-Aparicio, Juan A1 Páez Maldonado, José Antonio A1 Rodiles Guerrero, Luis A1 Boullosa, Daniel A1 Leon-Prados, Juan Antonio A1 Wernbom, Mathias A1 Pareja Blanco, Fernando K1 Velocity-based training K1 Set configuration K1 Arterial occlusion pressure K1 Rate of force development K1 Electromyography K1 Tensiomyography AB To compare the acute responses to different set configurations (cluster [CLU] vs. traditional [TRA]) under distinct blood flow conditions (free vs. restricted) in full-squat (SQ). Twenty resistance-trained males performed 4 protocols that differed in the set configuration (TRA: continuous repetitions; vs. CLU: 30 seconds of rest every 2 repetitions) and in the blood flow condition (FF: free-flow; vs. blood flow restriction [BFR]: 50% of arterial occlusion pressure). The relative intensity (60% 1RM), volume (3 sets of 8 repetitions), and resting time (2 minutes) were equated. Mean propulsive force (MPF), velocity (MPV) and power (MPP), and electromyography (EMG) parameters were recorded during each repetition. Tensiomyography (TMG), blood lactate, countermovement jump (CMJ) height, maximal voluntary isometric contraction, in SQ, and movement velocity against the load that elicited a 1 m·s -1 velocity at baseline (V1-load) in SQ were assessed at pre- and post-exercise. The CLU protocols allowed a better maintenance of MPF, MPV, MPP, and EMG median frequency during the exercise compared to TRA (clu-time interaction, p < 0.05). The TRA protocols experienced greater impairments post-exercise in TMG- and EMG-derived variables (clu-time interaction, p < 0.05) and SQ and CMJ performance (clu-time interaction, p = 0.08 and p < 0.05, respectively), as well as higher blood lactate concentrations (clu-time interaction, p < 0.001) than CLU. Moreover, BFR displayed decreases in TMG variables (bfr-time interaction, p < 0.01), but BFR-CLU resulted in the greatest reduction in twitch contraction time ( p < 0.001). Cluster sets reduced fatigue during and after the training session and BFR exacerbated impairments in muscle mechanical properties; however, the combination of both could improve contraction speed after exercise. PB Human Kinetics YR 2024 FD 2024 LK https://hdl.handle.net/10433/22362 UL https://hdl.handle.net/10433/22362 LA en NO Cornejo-Daza PJ, Sánchez-Valdepeñas J, Páez-Maldonado J, Rodiles-Guerrero L, Boullosa D, León-Prados JA, Wernbom M, Pareja-Blanco F. Acute Responses to Traditional and Cluster-Set Squat Training With and Without Blood Flow Restriction. J Strength Cond Res. 2024 Aug 1;38(8):1401-1412. doi: 10.1519/JSC.0000000000004820. Epub 2024 May 21. PMID: 38780903; PMCID: PMC11286160. NO Physical Performance & Sport Research Center. Pablo de Olavide University, Seville, DS RIO RD Apr 23, 2026