Prior heavy exercise enhances performance during subsequent perimaximal exercise

Andrew Jones, Daryl Wilkerson, Mark Burnley, Katrien Koppo

    Research output: Contribution to journalArticlepeer-review

    103 Citations (SciVal)

    Abstract

    Purpose: To test the hypothesis that prior heavy exercise increases the time to exhaustion during subsequent perimaximal exercise.


    Methods: Seven healthy males (mean ± SD 27 ± 3 yr; 78.4 ± 0.7 kg) completed square-wave transitions from unloaded cycling to work rates equivalent to 100, 110, and 120% of the work rate at [latin capital V with dot above]O2peak (W-[latin capital V with dot above]O2peak) after no prior exercise (control, C) and 10 min after a 6-min bout of heavy exercise at 50% [DELTA] (HE; half-way between the gas exchange threshold (GET) and [latin capital V with dot above]O2peak), in a counterbalanced design.


    Results: Blood [lactate] was significantly elevated before the onset of the perimaximal exercise bouts after prior HE (2.5 vs 1.1 mM; P < 0.05). Prior HE increased time to exhaustion at 100% (mean ± SEM. C: 386 ± 92 vs HE: 613 ± 161 s), 110% (C: 218 ± 26 vs HE: 284 ± 47 s), and 120% (C: 139 ± 18 vs HE: 180 ± 29 s) of W-[latin capital V with dot above]O2peak, (all P < 0.01). [latin capital V with dot above]O2 was significantly higher at 1 min into exercise after prior HE at 110% W-[latin capital V with dot above]O2peak (C: 3.11 ± 0.14 vs HE: 3.42 ± 0.16 L·min-1; P < 0.05), and at 1 min into exercise (C: 3.25 ± 0.12 vs HE: 3.67 ± 0.15; P < 0.01) and at exhaustion (C: 3.60 ± 0.08 vs HE: 3.95 ± 0.12 L·min-1; P < 0.01) at 120% of W-[latin capital V with dot above]O2peak.


    Conclusions: This study demonstrate that prior HE, which caused a significant elevation of blood [lactate], resulted in an increased time to exhaustion during subsequent perimaximal exercise presumably by enabling a greater aerobic contribution to the energy requirement of exercise.
    Original languageEnglish
    Pages (from-to)2085-2092
    JournalMedicine and Science in Sports and Exercise
    Volume35
    Issue number12
    DOIs
    Publication statusPublished - 2003

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