The Influence of Pedaling Frequency on Blood Lactate Accumulation in Cycling Sprints
In this study, we investigated the impact
of pedaling frequency on blood lactate accumulation during 10-second maximal
isokinetic cycling sprints. Thirteen trained males completed five 10-second
maximal isokinetic cycling sprints on a bicycle ergometer at different pedaling
frequencies (90 rpm, 110 rpm, 130 rpm, 150 rpm, 170 rpm) with continuous power
and frequency measurement. Capillary blood samples were taken pre-exercise and
up to 30 minutes post-exercise to determine the maximum blood lactate
concentration.Blood lactate accumulation was calculated as the difference between maximal
post-exercise and pre-start blood lactate concentration. Repeated measurement
ANOVA with Bonferroni-adjusted post hoc t-tests revealed significant progressive
increases in maximal blood lactate concentration and accumulation with higher
pedaling frequencies (p<0.001; η2+>+0.782).The findings demonstrate a significant influence of pedaling frequency on lactate
accumulation, emphasizing its relevance in anaerobic diagnostics. Optimal
assessment of maximal lactate formation rate is suggested to require a pedaling
frequency of at least 130 rpm or higher, while determining metabolic thresholds
using the maximal lactate formation rate may benefit from a slightly lower
pedaling frequency. [...] Georg Thieme Verlag Rüdigers...
Source: International Journal of Sports Medicine - Category: Sports Medicine Authors: Haase, Ralf Dunst, Anna Katharina Nitzsche, Nico Tags: Training & Testing Source Type: research