Maximal lactate accumulation rate in all-out exercise differs between cycling and running

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Abstract

This study aims to compare maximal lactate accumulation rate (V˙ La max) and power output (P max) between cycling and running in terms of reliability, differences between, and correlations among modalities. Eighteen competitive triathletes performed a 15-s all-out exercise test in cycling and a 100-m sprint test in running. Each test was performed twice and separated by one week. Exercise tests in cycling were performed on an ergometer whereas sprint tests in running were performed on an indoor track. Differences between trials and exercise modality were analyzed using two-way ANOVA. V˙ La max(ICC=0.894, ICC=0.868) and P max(ICC=0.907, ICC=0.965) attained 'good' to 'excellent' reliability in both cycling and running, respectively. V˙ La maxwas higher in running (d=0.709, p=0.016) whereas P maxwas lower in running (d=-0.862, p < 0.001). For V˙ La max, limits of agreement between modalities ranged from -0.224 to +0.437 mmol·l -1·s -1. P maxcorrelated between modalities (r=0.811, p < 0.001), whereas no correlation was found in V˙ La max(r=0.418, p=0.084). V˙ La maxis highly reliable in both modalities and higher in running compared to cycling. Since V˙ La maxdoes not correlate between cycling and running, it should be determined sport-specifically.
Original languageEnglish
JournalInternational journal of sports medicine
Number of pages9
ISSN0172-4622
DOIs
Publication statusPublished - 2020

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