Neuromuscular and Metabolic Responses to High-Intensity Intermittent Cycling Protocols With Different Work-to-Rest Ratios

Nicolò, Andrea; Bazzucchi, Ilenia; Lenti, Mauro; Haxhi, Jonida; Palumbo, Alessandro Scotto di; Sacchetti, Massimo

doi:10.1123/ijspp.2012-0289

Cited by 34 publications

(45 citation statements)

References 25 publications

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“…Several studies have tested different work to rest combinations to obtain maximal time spent at V _ O 2 max. Notable among these studies are those that applied high intensity with a short intermittent exercise protocol (7,13,18,29) and those that applied smaller intensity interspersed with longer work intervals (24,31,34). Indeed, recent evidences have shown that exercise permitting a long exercise tolerance combined with the achievement of V _ O 2 max seem to be the optimal stimulus strategy for obtaining improvements in aerobic fitness (8,34).…”

Section: Discussionmentioning

confidence: 96%

Decreasing Power Output Increases Aerobic Contribution During Low-Volume Severe-Intensity Intermittent Exercise

Lisbôa

Salvador²,

Raimundo³

et al. 2015

Journal of Strength and Conditioning Research

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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·min) 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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Section: Discussionmentioning

confidence: 96%

Decreasing Power Output Increases Aerobic Contribution During Low-Volume Severe-Intensity Intermittent Exercise

Lisbôa

Salvador²,

Raimundo³

et al. 2015

Journal of Strength and Conditioning Research

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“…As aquatic exercise continues to grow in popularity as an addition, or alternative, to land-based training, it is important for the aquatic instructor to realize that a TS-SWE workout can elicit a substantial metabolic load that is similar to land-based Tabata-style workouts. Furthermore, land-based, relatively brief HIIT results in time-efficient improvements in aerobic power and anaerobic capacity (Astorino, Allen, Roberson, & Jurancich, 2012;Gist et al, 2014;Laurent et al, 2014;Nicolò et al, 2014;Rozenek, Funato, Kubo, Hoshikawa, & Matsuo, 2007;Skelly et al, 2014;Tabata et al, 1997). Given the metabolic and cardiovascular load imposed by the TS-SWE in the current study, one may posit that HIIT performed in shallow water may result in comparable time-efficient metabolic adaptations as land-based HIIT.…”

Section: Discussionmentioning

confidence: 96%

“…Perhaps more indicative of the overall intensity of the workout was a peak blood lactate concentration of 9.2 ± 1.7 mM, 10-fold above resting and 12% greater than measured following a maximal SWE performed by the same individuals in a recent study (8.1 ± 1.7 mM, D'Acquisto et al 2015). Comparatively, peak blood lactate concentration recorded for land-based HIIT has been found to range from 7.0-13.1 mM (Emberts et al, 2013;Gist et al, 2014;Laurent et al, 2014;Nicolò et al, 2014;Rozenek et al, 2007;Zuniga et al, 2011), whereas Cook et al (2013) reported blood lactate values of 8.0 mM (RPE = 15, hard) in males following 10 × 9.1 m all-out running sprints in shallow water.…”

Section: Ijare Vol 9 No 3 2015mentioning

confidence: 99%

“…HIIT has a long history of being appreciated and used by athletes (e.g., in track, cycling, and swimming) in preparation for competition (Nicolò et al, 2014;Tabata et al, 1997;Zuniga et al, 2011) and has become an emerging trend in the general fitness community (Kilpatrick, Jung, & Little, 2014). Because of its high-intensity, low-volume nature, HIIT is being promoted as a time-efficient tactic for enhancing aerobic and anaerobic metabolic power (Emberts, Porcari, Doberstein, & Foster, 2013;Freese, Gist, & Cureton, 2013;Gist, Freese, & Cureton, 2014;Nicolò et al, 2014).…”

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confidence: 99%

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Cardiorespiratory Responses to a 20-Minutes Shallow Water Tabata-Style Workout

Miller¹,

D'Acquisto²,

D'Acquisto³

et al. 2015

IJARE

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“…Successive repeated intensive judo sparing bouts with short rest intervals between them change work-to-rest ratio toward lower values. not only on physical performance, but also on metabolic and perception of entire exercise [10,11]. For that reason, during a prolonged competitive effort athletes of various sports, soccer player [13] football players [14] and runners [15][16][17] athletes have individual specific pacing strategy for sustain their optimal physical abilities to avoid premature exhaustion.…”

Section: Introductionmentioning

confidence: 99%

Work-to-rest ratio during three repeated judo struggles separated by short intermissions. A preliminary study

Obmiński

Witek

Lerczak

et al. 2014

Journal of Combat Sports and Martial Arts

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It is known, that an exertion of high intensity leads to fatigue of working muscles and to the deterioration their physical abilities. That phenomenon was especially noted during intensive and continues effort, for instant during Wingate test. At the end of that exertion lasting 30s the value of power output is always lower as compared to that recorded as peak power, reached few second after the start. That relative, percentage of power lost is expressed as fatigue index (FI). The study showed, that peak power and the maximal accumulated O (2) deficit were highly and significantly correlated and ability to maintain power output during a 30-s cycle sprint is related to anaerobic capacity [1]. Furthermore, the lost of ma ximal power is fitted by an exponential curve [2]. Among power athletes mean FI reaches almost 49% with absolute peak power amounting over 1000 Watt, and over 12.0 W/kg after its normalization to body mass [3]. Impairment of maximal power output has been found also in successive repeated "all-out" bouts, when the length of intermissions for rest is too small to reach full state of recovery prior to the next bout. In such cases the performance levels of consecutive exertions become more and more lower, even despite of previously loading by various pharmacological enhancers [4][5][6][7][8]. Long since it has been evidenced, that rate of post-effort recovery of cellular phosphagens ( PCr, ATP) play a crucial role in a rise of ability to generate again maximal, initial power output, while the depletion of the phosphagens is responsible for temporary impairment of the power. Obviously, there are also the other metabolic and physiological factors contributing to voluntary post-effort state of fatigue and rate of recovery and to the equilibrium between those two processes. These issues are taken into consider, when scheduling interval training session [9]. During intermittent exercises work-to-rest ratio influences SummaryIntroduction. In a single full-time judo struggle played by a male player lasts 5 minutes of active work, with excluding total time of rest periods, when a referee aborts a struggle. Thus work-to-rest is the factor showing both judging and fighting style. The aim of this study was to confirm hypothesis, that severe muscle fatigue may shifts work-to-rest ratio toward a lower values.Material and methods. Six senior male judo players were grouped into three pairs, which played repeated three full-time 5-minute judo sparing matches separated by 10-minute passive intermissions. The struggles were judged by the same referee. Total time of each struggle lasted 5 minutes of active combat with stoppage time of rest periods. Additional comparable observation was conducted during official judo tournaments, where each of six judokas played at least one full-time fight.Results. For 1 st and 2 nd struggle work-to-rest period were comparable, 2.27± 0.42, n=6, while for 3 rd struggle was lower 1.60±0.07. We suspect that lower work-to-rest ratio and higher sum of rest times resulted in higher frequency...

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Neuromuscular and Metabolic Responses to High-Intensity Intermittent Cycling Protocols With Different Work-to-Rest Ratios

Cited by 34 publications

References 25 publications

Decreasing Power Output Increases Aerobic Contribution During Low-Volume Severe-Intensity Intermittent Exercise

Decreasing Power Output Increases Aerobic Contribution During Low-Volume Severe-Intensity Intermittent Exercise

Cardiorespiratory Responses to a 20-Minutes Shallow Water Tabata-Style Workout

Work-to-rest ratio during three repeated judo struggles separated by short intermissions. A preliminary study

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