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The Validity of Physiological Variables to Assess Training Intensity in Kayak Athletes

Bishop, David (2004) The Validity of Physiological Variables to Assess Training Intensity in Kayak Athletes. International Journal of Sports Medicine, 25 (1). pp. 68-72. ISSN 0172-4622 (print) 1439-3964 (online)

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Abstract

It appears that training benefits are compromised if excessive training is performed at intensities that are either too low or too high. This suggests a need for accurate methods to monitor training intensity. It has been suggested that heart rate (HR) or lactate concentration ([La-]) can be used to accurately monitor training intensity. The purpose of the present study therefore, was to examine whether the relationship between HR, [La-] and intensity determined during a kayak graded exercise test (GXT) remained stable during constant-intensity kayak exercise. Sixteen trained kayak paddlers, (22 ± 4 y, peak V·O2 = 3.7 ± 0.9 l × min-1) performed a GXT on a wind-braked kayak ergometer. They then performed a 20-min constant-load test on the kayak ergometer at a power output corresponding to their lactate inflection (LI) intensity. Eight subjects also performed a 20-min constant-load test at a power output corresponding to their lactate threshold (LT) intensity. Differences between constant-load and GXT values were determined using one-way ANOVA (p < 0.05). There were no significant differences between values for HR and V·O2 derived from the GXT and those measured during both constant-load tests. However, while [La-] also provided a valid marker of the LI training intensity (1.8 ± 0.3 v 2.1 ± 0.8 mmol × l-1), [La-] did not provide a valid marker of the LT training intensity (3.8 ± 0.7 v 5.1 ± 1.4 mmol × l-1). These results suggest that HR, but not [La-1], is similar during both a GXT and constant-load exercise at the LT intensity.

Item Type: Article
Uncontrolled Keywords: heart rate, lactate threshold, monitoring training
Subjects: FOR Classification > 1106 Human Movement and Sports Science
Faculty/School/Research Centre/Department > College of Sports and Exercise Science
Depositing User: VUIR
Date Deposited: 13 Jan 2014 05:23
Last Modified: 13 Jan 2014 05:23
URI: http://vuir.vu.edu.au/id/eprint/24242
DOI: https://doi.org/10.1055/s-2003-45233
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Citations in Scopus: 8 - View on Scopus

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