Szukana fraza: [Abstrakt = "Introduction. According to the ACSM’s position stand on resistance training, there is strong evidence \(category A\) that the optimal number of repetitions to optimize hypertrophy should be between 8 and 12 repetitions per set for each exercise. Aim of Study. We investigated which intensity scheme would maintain 8\-12 repetitions during repeated sets of resistance exercise performed until muscular failure. Material and Methods. Twenty\-eight resistance\-trained women \(age = 26.1 ± 6.6 years, body mass = 66.2 ± 5.94 kg, height = 165 ± 6 cm\) were tested over a five\-week period. In week 1 the subjects were tested for 10RM leg press. In weeks 2\-5 the subjects completed four sets of leg presses performed until muscular failure, with 60 s inter\-set rest intervals in a randomized, counterbalanced order. Set 1 of each bout was performed at 10RM, with differing intensity for sets 2\-4 as follows\: \(CON\) 10RM load for all sets, \(RED5\) 5% load reduction after each set, \(RED10\) 10% load reduction after each set, and \(RED15\) 15% load reduction after each set. Results. The number of repetitions completed differed \(p < 0.001\) depending on the conditions. Repetitions were reduced below set 1 in sets 2\-4 under CON \(p < 0.05\) and for sets 3\-4 \(p < 0.05\) in RED5. RED10 and RED15 resulted in increased repetitions during sets 2\-4 \(p 60%\) of sets in the range of 8\-12 repetitions, where both CON and RED15 resulted in <50% of sets in the range of 8\-12 repetitions. Time under tension \(TUT\) was kept within a 20\-70 s per set window for most sets \(95% CI\) for RED10 and RED15. Conclusions. Load reductions of 5\-10% in subsequent sets should allow for the maintenance of 8\-12 repetitions for most sets of resistance exercise, with load reductions of 10% more likely to maintain optimal TUT."]

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