Produção Nacional
Revisado por pares
Decreasing Power Output Increases Aerobic Contribution During Low-Volume Severe-Intensity Intermittent Exercise
2015; Lippincott Williams & Wilkins; Volume: 29; Issue: 9 Linguagem: Inglês
10.1519/jsc.0000000000000914
ISSN1533-4287
AutoresFelipe Domingos Lisbôa, Amadeo F. Salvador, João Antônio Gesser Raimundo, Kayo Leonardo Pereira, Rafael Alves de Aguiar, Fabrízio Caputo,
Tópico(s)Physical Activity and Health
ResumoLisbôa, FD, Salvador, AF, Raimundo, JAG, Pereira, KL, de Aguiar, RA, and Caputo, F. Decreasing power output increases aerobic contribution during low-volume severe-intensity intermittent exercise. J Strength Cond Res 29(9): 2434–2440, 2015—High-intensity interval training applied at submaximal, maximal, and supramaximal intensities for exercising at V[Combining Dot Above]O2max (t95V[Combining Dot Above]O2max) has shown similar adaptation to low-volume sprint interval training among active subjects. Thus, the aim of the present study was to investigate t95V[Combining Dot Above]O2max during 2 different intermittent exercises in the severe-intensity domain (e.g., range of power outputs over which V[Combining Dot Above]O2max can be elicited during constant-load exercise) and to identify an exercise protocol that reduces the time required to promote higher aerobic demand. Eight active men (22 ± 2 years, 72 ± 5 kg, 174 ± 4 cm, 47 ± 8 ml·kg−1·min−1) completed the following protocols on a cycle ergometer: (a) incremental test, (b) determination of critical power (CP), (c) determination of the highest constant intensity (IHIGH) and the lowest exercise duration (TLOW) in which V[Combining Dot Above]O2max is attained, and (d) 2 exercise sessions in a randomized order that consisted of a constant power output (CPO) session at IHIGH and a decreasing power output (DPO) session that applied a decreasing work rate profile from IHIGH to 110% of CP. Time to exhaustion was significantly longer in DPO (371 ± 57 seconds vs. 225 ± 33 seconds). Moreover, t95V[Combining Dot Above]O2max (186 ± 72 seconds vs. 76 ± 49 seconds) and O2 consumed (29 ± 4 L vs. 17 ± 3 L) were higher in DPO when compared with the CPO protocol. In conclusion, data suggest that the application of a DPO protocol during intermittent exercise increases the time spent at high percentages of V[Combining Dot Above]O2max.
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