Maximal Lactate Accumulation Rate in All-out Exercise Differs between Cycling and Running

Abstract

This study aims to compare maximal lactate accumulation rate (V̇ Lamax) and power output (Pmax) 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. V̇ Lamax (ICC=0.894, ICC=0.868) and Pmax (ICC=0.907, ICC=0.965) attained ‘good’ to ‘excellent’ reliability in both cycling and running, respectively. V̇ Lamax was higher in running (d=0.709, p=0.016) whereas Pmax was lower in running (d=−0.862, p < 0.001). For V̇ Lamax, limits of agreement between modalities ranged from −0.224 to +0.437 mmol·l-1·s-1. Pmax correlated between modalities (r=0.811, p < 0.001), whereas no correlation was found in V̇ Lamax (r=0.418, p=0.084). V̇ Lamax is highly reliable in both modalities and higher in running compared to cycling. Since V̇ Lamax does not correlate between cycling and running, it should be determined sport-specifically.

Comparison Between Treadmill and Bicycle Ergometer Exercises in Terms of Safety of Cardiopulmonary Exercise Testing in Patients With Coronary Heart Disease

“…The peak SBP*HR was also higher in the treadmill group, indicating higher myocardial oxygen consumption. Moreover, even at the same exercise intensity, HR and plasma lactate concentrations were higher in the subjects performing treadmill exercise compared with those performing the bicycle ergometer exercise ( 14 , 15 ). But the multivariate regression analysis in the present study revealed that the correlation between exercise stimulation methods and events is independent of VO 2 peak.…”

Is Maximal Lactate Accumulation Rate Promising for Improving 5000-m Prediction in Running?

“…The participants performed the 100-m all-out sprint test and the standardised warm-up of 15 minutes including technical drills and starts as described previously 20 21 . Throughout the sprints, participants were verbally encouraged by the examiners.…”

“…ċLa max was calculated as the difference between the measured maximal post-exercise lactate concentration and resting lactate concentration (ΔLa 100 ), which was divided by the difference between t 100 and the period at the beginning of exercise for which no lactate formation is assumed (t alac ) (Eq. 1) 20 21 28 29 .…”

“…In cycling, previous research demonstrated that mathematical simulation approaches allow for calculating maximal lactate steady-state with an acceptable reliability 17 18 and accuracy 19 . Furthermore, test procedures to determine ċLa max in running have been developed and demonstrated high reliability 20 21 . Usually, the increase in post-exercise lactate concentration following an 10–15 s all-out sprint test is used to determine ċLa max .…”

Case Report: Training Monitoring and Performance Development of a Triathlete With Spinal Cord Injury and Chronic Myeloid Leukemia During a Paralympic Cycle

“…Besides rather common procedures in exercise testing which target maximal oxygen uptake ( V°O 2max ) and/or lactate threshold ( 25 ), we developed procedures to determine maximal lactate accumulation rate ( ) as a measure of the glycolytic metabolism. These procedures demonstrated sufficient reliability, were associated to physical performance in handcycling ( 26 , 27 ) and running ( 28 , 29 ), and were modified for this case study accordingly. is derived from short sprint tests and calculated by dividing the increase in postexercise blood lactate concentration (BLC) by the assumed lactic period (in this study 3 s) ( 30 , 31 ).…”