Abstract
The aim of this study was to correlate the anaerobic speed reserve and the
maximal speed reserve with the distance capacity above the critical speed
(D′), derived from four different mathematical models, in a group of
endurance runners. Twenty-two runners performed an incremental treadmill test to
exhaustion, an all-out 40-m sprint and three time trials (800, 1,500 and 3,000
m) on an outdoor running track to determine an anaerobic speed reserve, a
maximal speed reserve and D′. D′ was determined using linear
distance–time (D′linear d–t), linear velocity–time
(D′linear 1/t), 2-parameter hyperbolic (D′2-hyp) and
3-parameter hyperbolic (D′3-hyp) models. A high correlation was observed
between the anaerobic speed reserve and D′linear 1/t
(r=0.77; p<0.001), while moderate correlations were observed
between the anaerobic speed reserve and D′linear d–t
(r=0.69; p<0.001) and D′2-hyp (r=0.63;
p<0.003). The anaerobic speed reserve was not significantly
correlated with D′3-hyp. High correlations were detected between the
maximal speed reserve and D′linear 1/t, D′linear
d–t and D′2-hyp (r=0.74 to 0.76;
p<0.001) and a moderate correlation was detected between the maximal
speed reserve and D′3-hyp (r=0.58; p=0.01). These moderate-
to high correlations with D′, especially when derived from models using
two parameters, suggest the existence of similar mechanisms underpinning the
variables.
Keywords
anaerobic capacity - anaerobic speed reserve -
D′ - maximal speed reserve
