Acute mechanical, physiological and perceptual responses in older men to traditional-set or different cluster-set config
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ORIGINAL ARTICLE
Acute mechanical, physiological and perceptual responses in older men to traditional‑set or different cluster‑set configuration resistance training protocols Antonio Dello Iacono1 · Domenico Martone2 · Lawrence Hayes1 Received: 22 March 2020 / Accepted: 30 July 2020 © The Author(s) 2020
Abstract Purpose The aims of this study were to compare mechanical outputs (i.e. power and impulse), physiological (i.e. heart rate) and perceptual (i.e. effort and fatigue) responses in older men to traditional-set or different cluster-set configuration resistance training protocols. Methods In a randomized cross-over design, 20 healthy old men (aged 67.2 ± 2.1 years) completed four resistance training sessions using the back squat exercise loaded with optimal power loads. Training configurations were: traditional (TRA), three sets of six repetitions with 120-s rest between each set; Cluster-set 1 (CLU1), 24 single-repetition clusters with 10 s of rest after every cluster; Cluster-set 2 (CLU2), 12 double-repetition clusters with 20-s rest after every cluster; and Cluster-set 4 (CLU4), 6 quadruple-repetition clusters with 40-s rest after every cluster. Results Cluster-set configurations resulted in greater power outputs compared to traditional-set configuration (range 2.6– 9.2%, all p ≤ 0.07 for main effect and protocol × set interactions). CLU1 and CLU2 induced higher heart rate (range 7.1– 10.5%, all p
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