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LOW SAMPLING RATES BIAS OUTCOMES FROM THE WINGATE TEST
Afiliación
Universidade Federal do Rio de Janeiro. Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia. Programa de Engenharia Biomédica. Rio de Janeiro, RJ, Brasil.
Universidade Federal do Rio de Janeiro. Escola Superior de Educação Física. Rio de Janeiro, RJ, Brasil.
UTAD. Sports. Vila Real, Portugal.
Universidade Federal do Rio de Janeiro. Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia. Programa de Engenharia Biomédica. Rio de Janeiro, RJ, Brasil.
Universidade Federal do Rio de Janeiro. Escola Superior de Educação Física. Rio de Janeiro, RJ, Brasil.
UTAD. Sports. Vila Real, Portugal.
Universidade Federal do Rio de Janeiro. Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia. Programa de Engenharia Biomédica. Rio de Janeiro, RJ, Brasil.
Resumen en ingles
The purpose of this work was to apply a simple
method for acquisition of power output (PO)
during the Wingate Anaerobic Test (WAnT) at a
high sampling rate ( S R ) and to compare the effect
of lower S R
on the measurements extracted from
the PO. 26 male subjects underwent 2 WAnTs on
a cycle ergometer. The reference PO was calcu-lated at 30 Hz as a function of the linear veloc-ity, the moment of inertia and the frictional load.
The PO was sampled at 0.2, 0.5, 1, 2 and 5 Hz.
Both the peak (16.03 ± 2.22 W · kg
−1
) and mean
PO (10.34 ± 1.01 W · kg
−1
) presented lower rela-tive values when the S R
was lower. Peak PO was
attenuated by 0.29 – 42.07 % for decreasing sam-pling rates, resulting in different values for 0.2
and 1 Hz ( P< 0.001). When the S R
was 0.2 Hz, the
time to peak was delayed by 53.81 % ( P< 0.001)
and the fatigue index was attenuated by 22.12 %
( P< 0.001). In conclusion, due to the differences
achieved here and the fact that the peak flywheel
frequency is around 2.3 Hz, we strongly recom-mend that the PO be sampled at 5 Hz instead of
0.2 Hz in order to avoid biased errors and misun-derstandings of the WAnT results.
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