Comparison of Critical Speed and D' Derived From 2 or 3 Maximal Tests

Article


Kordi, Mehdi, Menzies, Campbell and Galbraith, A. 2018. Comparison of Critical Speed and D' Derived From 2 or 3 Maximal Tests. International Journal of Sports Physiology and Performance. 14 (5), pp. 685-688.
AuthorsKordi, Mehdi, Menzies, Campbell and Galbraith, A.
Abstract

Purpose: The hyperbolic distance-time relationship can be used to profile running performance and establish critical speed (CS) and D'. Typically, to establish these parameters multiple (3+) performance trials are required, which can be highly fatiguing and limit the usability of such protocols in a single training session. This study aimed to compare CS and D' calculated from a two-trial (2-point model) and a three-trial (3-point model) method.
Methods: 14 male distance runners completed three fixed-distance (3600, 2400, 1200 m) time trials on a 400 m outdoor running track, separated by a 30-minute recovery. Participants completed the protocol nine times across a twelve-month period, with approximately 42-days between each test. CS and D' were calculated using all three distances (3-point model) and also using the 3600 and 1200 m distances only (2-point model).
Results: Mean (±SD) CS for both 3-point and 2-point models was 4.94 ± 0.32 m.s, whilst D' was 123.3 ± 57.70 m and 127.4 ± 57.34 m for 3-point and 2-point models, respectively. Overall bias for both CS and D' between 3-point and 2-point model was classed as trivial.
Conclusions: A 2-point time-trial model can be used to calculate CS and D' as proficiently as a 3-point model, making it a less fatiguing, inexpensive and applicable method for coaches, practitioners and athletes to monitor running performance in one training session.

JournalInternational Journal of Sports Physiology and Performance
Journal citation14 (5), pp. 685-688
ISSN1555-0265
Year2018
PublisherHuman Kinetics
Accepted author manuscript
Digital Object Identifier (DOI)doi:10.1123/ijspp.2017-0809
Web address (URL)https://doi.org/10.1123/ijspp.2017-0809
Publication dates
Online14 Nov 2018
Publication process dates
Deposited26 Oct 2018
Accepted16 Oct 2018
Accepted16 Oct 2018
Copyright informationAccepted author manuscript version reprinted, by permission, from International Journal of Sports Physiology and Performance, 2019, 14 (5): 685-688, https://doi.org/10.1123/ijspp.2017-0809. © Human Kinetics, Inc.
LicenseAll rights reserved
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