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  • Title: Effects of work-matched supramaximal intermittent vs. submaximal constant-workload warm-up on all-out effort power output at the end of 2 minutes of maximal cycling.
    Author: Fujii N, Hara H, Enomoto Y, Tanigawa S, Nishiyasu T.
    Journal: Eur J Sport Sci; 2019 Apr; 19(3):336-344. PubMed ID: 30086683.
    Abstract:
    We tested the hypothesis that work-matched supramaximal intermittent warm-up improves final-sprint power output to a greater degree than submaximal constant-intensity warm-up during the last 30 s of a 120-s supramaximal exercise simulating the final sprint during sports events lasting approximately 2 min. Ten male middle-distance runners performed a 120-s supramaximal cycling exercise consisting of 90 s of constant-workload cycling at a workload corresponding to 110% maximal oxygen uptake (VO2max) followed by 30 s of maximal-effort cycling. This exercise was preceded by 1) no warm-up (Control), 2) a constant-workload cycling warm-up at a workload of 60%VO2max for 6 min and 40 s, or 3) a supramaximal intermittent cycling warm-up for 6 min and 40 s consisting of 5 sets of 65 s of cycling at a workload of 46%VO2max + 15 s of supramaximal cycling at a workload of 120%VO2max. By design, total work was matched between the two warm-up conditions. Supramaximal intermittent and submaximal constant-workload warm-ups similarly increased 5-s peak (590 ± 191 vs. 604 ± 215W, P = 0.41) and 30-s mean (495 ± 137 vs. 503 ± 154W, P = 0.48) power output during the final 30-s maximal-effort cycling as compared to the no warm-up condition (5-s peak: 471 ± 165W; 30-s mean: 398 ± 117W). VO2 during the 120-s supramaximal cycling was similarly increased by the two warm-ups as compared to no-warm up (P ≤ 0.05). These findings show that work-matched supramaximal intermittent and submaximal constant-workload warm-ups improve final sprint (∼30 s) performance to similar extents during the late stage of a 120-s supramaximal exercise bout.
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