'Priming' exercise and O2 uptake kinetics during treadmill running

Andrew Jones, Fred Dimenna, Fiona Lothian, Esme Taylor, Stephen Garland, Philip Hayes, Kevin THOMPSON

    Research output: Contribution to journalArticle

    14 Citations (Scopus)
    5 Downloads (Pure)

    Abstract

    We tested the hypothesis that priming exercise would speed V(O2) kinetics during treadmill running. Eight subjects completed a square-wave protocol, involving two bouts of treadmill running at 70% of the difference between the running speeds at lactate threshold (LT) and V(O2) max, separated by 6-min of walking at 4 km h(-1), on two occasions. Oxygen uptake was measured breath-by-breath and subsequently modelled using non-linear regression techniques. Heart rate and blood lactate concentration were significantly elevated prior to the second exercise bout compared to the first. However, V(O2) kinetics was not significantly different between the first and second exercise bouts (mean+/-S.D., phase II time constant, Bout 1: 16+/-3s vs. Bout 2: 16+/-4s; V(O2) slow component amplitude, Bout 1: 0.24+/-0.10 L min(-1)vs. Bout 2: 0.20+/-0.12 L min(-1); mean response time, Bout 1: 34+/-4s vs. Bout 2: 34+/-6s; P>0.05 for all comparisons). These results indicate that, contrary to previous findings with other exercise modalities, priming exercise does not alter V(O2) kinetics during high-intensity treadmill running, at least in physically active young subjects. We speculate that the relatively fast V(O2) kinetics and the relatively small V(O2) slow component in the control ('un-primed') condition negated any enhancement of V(O2) kinetics by priming exercise in this exercise modality.

    Original languageEnglish
    Pages (from-to)182-188
    Number of pages7
    JournalRespiratory Physiology and Neurobiology
    Volume161
    Issue number2
    DOIs
    Publication statusPublished - 30 Apr 2008

    Fingerprint

    Running
    Lactic Acid
    Reaction Time
    Walking
    Heart Rate
    Oxygen

    Cite this

    Jones, Andrew ; Dimenna, Fred ; Lothian, Fiona ; Taylor, Esme ; Garland, Stephen ; Hayes, Philip ; THOMPSON, Kevin. / 'Priming' exercise and O2 uptake kinetics during treadmill running. In: Respiratory Physiology and Neurobiology. 2008 ; Vol. 161, No. 2. pp. 182-188.
    @article{12cb3f1d9b694844979007b484803403,
    title = "'Priming' exercise and O2 uptake kinetics during treadmill running",
    abstract = "We tested the hypothesis that priming exercise would speed V(O2) kinetics during treadmill running. Eight subjects completed a square-wave protocol, involving two bouts of treadmill running at 70{\%} of the difference between the running speeds at lactate threshold (LT) and V(O2) max, separated by 6-min of walking at 4 km h(-1), on two occasions. Oxygen uptake was measured breath-by-breath and subsequently modelled using non-linear regression techniques. Heart rate and blood lactate concentration were significantly elevated prior to the second exercise bout compared to the first. However, V(O2) kinetics was not significantly different between the first and second exercise bouts (mean+/-S.D., phase II time constant, Bout 1: 16+/-3s vs. Bout 2: 16+/-4s; V(O2) slow component amplitude, Bout 1: 0.24+/-0.10 L min(-1)vs. Bout 2: 0.20+/-0.12 L min(-1); mean response time, Bout 1: 34+/-4s vs. Bout 2: 34+/-6s; P>0.05 for all comparisons). These results indicate that, contrary to previous findings with other exercise modalities, priming exercise does not alter V(O2) kinetics during high-intensity treadmill running, at least in physically active young subjects. We speculate that the relatively fast V(O2) kinetics and the relatively small V(O2) slow component in the control ('un-primed') condition negated any enhancement of V(O2) kinetics by priming exercise in this exercise modality.",
    keywords = "Exercise modality, O2 deficit, over(V, ?)O2 dynamics, ?)O2 slow component",
    author = "Andrew Jones and Fred Dimenna and Fiona Lothian and Esme Taylor and Stephen Garland and Philip Hayes and Kevin THOMPSON",
    year = "2008",
    month = "4",
    day = "30",
    doi = "10.1016/j.resp.2008.02.001",
    language = "English",
    volume = "161",
    pages = "182--188",
    journal = "Respiration Physiology",
    issn = "1569-9048",
    publisher = "Elsevier",
    number = "2",

    }

    Jones, A, Dimenna, F, Lothian, F, Taylor, E, Garland, S, Hayes, P & THOMPSON, K 2008, ''Priming' exercise and O2 uptake kinetics during treadmill running', Respiratory Physiology and Neurobiology, vol. 161, no. 2, pp. 182-188. https://doi.org/10.1016/j.resp.2008.02.001

    'Priming' exercise and O2 uptake kinetics during treadmill running. / Jones, Andrew; Dimenna, Fred; Lothian, Fiona; Taylor, Esme; Garland, Stephen; Hayes, Philip; THOMPSON, Kevin.

    In: Respiratory Physiology and Neurobiology, Vol. 161, No. 2, 30.04.2008, p. 182-188.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - 'Priming' exercise and O2 uptake kinetics during treadmill running

    AU - Jones, Andrew

    AU - Dimenna, Fred

    AU - Lothian, Fiona

    AU - Taylor, Esme

    AU - Garland, Stephen

    AU - Hayes, Philip

    AU - THOMPSON, Kevin

    PY - 2008/4/30

    Y1 - 2008/4/30

    N2 - We tested the hypothesis that priming exercise would speed V(O2) kinetics during treadmill running. Eight subjects completed a square-wave protocol, involving two bouts of treadmill running at 70% of the difference between the running speeds at lactate threshold (LT) and V(O2) max, separated by 6-min of walking at 4 km h(-1), on two occasions. Oxygen uptake was measured breath-by-breath and subsequently modelled using non-linear regression techniques. Heart rate and blood lactate concentration were significantly elevated prior to the second exercise bout compared to the first. However, V(O2) kinetics was not significantly different between the first and second exercise bouts (mean+/-S.D., phase II time constant, Bout 1: 16+/-3s vs. Bout 2: 16+/-4s; V(O2) slow component amplitude, Bout 1: 0.24+/-0.10 L min(-1)vs. Bout 2: 0.20+/-0.12 L min(-1); mean response time, Bout 1: 34+/-4s vs. Bout 2: 34+/-6s; P>0.05 for all comparisons). These results indicate that, contrary to previous findings with other exercise modalities, priming exercise does not alter V(O2) kinetics during high-intensity treadmill running, at least in physically active young subjects. We speculate that the relatively fast V(O2) kinetics and the relatively small V(O2) slow component in the control ('un-primed') condition negated any enhancement of V(O2) kinetics by priming exercise in this exercise modality.

    AB - We tested the hypothesis that priming exercise would speed V(O2) kinetics during treadmill running. Eight subjects completed a square-wave protocol, involving two bouts of treadmill running at 70% of the difference between the running speeds at lactate threshold (LT) and V(O2) max, separated by 6-min of walking at 4 km h(-1), on two occasions. Oxygen uptake was measured breath-by-breath and subsequently modelled using non-linear regression techniques. Heart rate and blood lactate concentration were significantly elevated prior to the second exercise bout compared to the first. However, V(O2) kinetics was not significantly different between the first and second exercise bouts (mean+/-S.D., phase II time constant, Bout 1: 16+/-3s vs. Bout 2: 16+/-4s; V(O2) slow component amplitude, Bout 1: 0.24+/-0.10 L min(-1)vs. Bout 2: 0.20+/-0.12 L min(-1); mean response time, Bout 1: 34+/-4s vs. Bout 2: 34+/-6s; P>0.05 for all comparisons). These results indicate that, contrary to previous findings with other exercise modalities, priming exercise does not alter V(O2) kinetics during high-intensity treadmill running, at least in physically active young subjects. We speculate that the relatively fast V(O2) kinetics and the relatively small V(O2) slow component in the control ('un-primed') condition negated any enhancement of V(O2) kinetics by priming exercise in this exercise modality.

    KW - Exercise modality

    KW - O2 deficit

    KW - over(V

    KW - ?)O2 dynamics

    KW - ?)O2 slow component

    U2 - 10.1016/j.resp.2008.02.001

    DO - 10.1016/j.resp.2008.02.001

    M3 - Article

    VL - 161

    SP - 182

    EP - 188

    JO - Respiration Physiology

    JF - Respiration Physiology

    SN - 1569-9048

    IS - 2

    ER -

    Jones A, Dimenna F, Lothian F, Taylor E, Garland S, Hayes P et al. 'Priming' exercise and O2 uptake kinetics during treadmill running. Respiratory Physiology and Neurobiology. 2008 Apr 30;161(2):182-188. https://doi.org/10.1016/j.resp.2008.02.001