Abstract
An accurate evaluation of training load is paramount for the planning and periodization
of training. The aim of the present study was to evaluate the relationship between
a new method to monitor training load in soccer (Visual Analogic Scale training load;
VAS-TL), and two established heart rate-based methods (TRIMP and Edwards’ method).
51 soccer players (age 15.6±0.3 years) answered 2 questions to assess perceived exertion
and fatigue (VAS1-TL, and VAS2-TL) after training sessions and official matches. Performance
in the Yo-Yo tests, VAS scores and heart rate of training sessions and matches, and
match activity were analysed. We found significant correlations (r=0.60–0.72; p<0.05)
between VAS-TL, TRIMP, and the Edwards’ training load method, with the highest correlations
achieved in the matches. Although the different methods to monitor training load were
correlated with the distance covered during the match (r=0.53–0.78; p<0.05), only
VAS1-TL was associated with high-intensity activities (r=0.43–0.54; p<0.05). The new
VAS-based perceived exertion method to monitor training load is easy to apply and
is sensitive to differences in positional role and physical capacity. Thus, the applied
method may be used in addition to the usual training load methods, allowing for daily
quantification of individual training load in soccer.
Key words
VAS scores - RPE - TRIMP - Yo-Yo IE2 - Yo-Yo IR1 - time-motion analyses
