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  • A single-session testing protocol to determine Critical Power and W’

    Author(s)
    Constantini, Keren
    Sabapathy, Surendran
    Cross, Troy J
    Griffith University Author(s)
    Sabapathy, Surendran
    Cross, Troy J.
    Constantini, Keren
    Year published
    2014
    Metadata
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    Abstract
    Purpose Critical power (CP), and the finite capacity to perform work above CP (W'), can be determined using a 3-min "all-out" cycling test (3MT). This protocol requires two laboratory visits: an incremental exercise test, followed by a 3MT on a separate day. The purpose of this study was to establish whether an incremental exercise test and a 3MT performed during a single laboratory visit can be used to accurately determine CP and W'. Methods Twelve participants completed two experimental protocols: (1) Combined protocol: an incremental exercise test followed by a 3MT, with 20 min of recovery between exercise bouts; and (2) ...
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    Purpose Critical power (CP), and the finite capacity to perform work above CP (W'), can be determined using a 3-min "all-out" cycling test (3MT). This protocol requires two laboratory visits: an incremental exercise test, followed by a 3MT on a separate day. The purpose of this study was to establish whether an incremental exercise test and a 3MT performed during a single laboratory visit can be used to accurately determine CP and W'. Methods Twelve participants completed two experimental protocols: (1) Combined protocol: an incremental exercise test followed by a 3MT, with 20 min of recovery between exercise bouts; and (2) Independent protocol: the conventional 3MT protocol, performed on a separate day. Results CP determined from the Combined (254 ᠱ17 W) and Independent (256 ᠱ18 W) protocols were not different (p = 0.40). Similarly, W' was not different (p = 0.96) between the Combined (13.7 ᠳ.9 kJ) and Independent (13.7 ᠴ.5 kJ) protocols. Linear regression revealed a strong level of measurement agreement between the protocols for CP and W', evidenced by high R 2 values (=0.85) and marginal standard errors of the estimates (CP = 5 W; W' = 1.81 kJ). Conclusion A Combined protocol, consisting of an incremental exercise test followed by a 3MT, provides an accurate and valid method to determine an individual's CP and, to a lesser extent, W'. Furthermore, this protocol permits the measurement of the gas-exchange threshold and peak O2 uptake and, consequently, the moderate, heavy, and severe exercise-intensity domains may be defined within a single exercise-testing session.
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    Journal Title
    European Journal of Applied Physiology
    Volume
    114
    DOI
    https://doi.org/10.1007/s00421-014-2827-8
    Subject
    Exercise Physiology
    Human Movement and Sports Sciences
    Publication URI
    http://hdl.handle.net/10072/62347
    Collection
    • Journal articles

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