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Título
Concurrent Validity and Reliability of Two Portable Powermeters (Power2Max vs. PowerTap) to Measure Different Types of Efforts in Cycling
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Sensors
Número de la revista
18
Cita Bibliográfica
Iglesias-Pino, J., Herrero-Molleda, A., Saavedra-García, M. Á., & García-López, J. (2023). Concurrent Validity and Reliability of Two Portable Powermeters (Power2Max vs. PowerTap) to Measure Different Types of Efforts in Cycling. Sensors, 23(18). https://doi.org/10.3390/S23187745
Editorial
MDPI
Fecha
2023
Resumen
[EN] The purpose was to assess the concurrent validity and reliability of two portable powermeters
(PowerTap vs. Power2Max) in different types of cycling efforts. Ten cyclists performed
two submaximal, one incremental maximal and two supramaximal sprint tests on an ergometer,
while pedaling power and cadence were registered by both powermeters and a cadence sensor
(GarminGSC10). During the submaximal and incremental maximal tests, significant correlations
were found for power and cadence data (r = 0.992–0.997 and 0.996–0.998, respectively, p < 0.001),
with a slight power underestimation by PowerTap (0.7–1.8%, p < 0.01) and a high reliability of both
powermeters (p < 0.001) for measurement of power (ICC = 0.926 and 0.936, respectively) and cadence
(ICC = 0.969 and 0.970, respectively). However, during the supramaximal sprint test, their agreement
to measure power and cadence was weak (r = 0.850 and 0.253, p < 0.05) due to the low reliability of
the cadence measurements (ICC between 0.496 and 0.736, and 0.574 and 0.664, respectively; p < 0.05)
in contrast to the high reliability of the cadence sensor (ICC = 0.987–0.994). In conclusion, both
powermeters are valid and reliable for measuring power and cadence during continuous cycling
efforts (~100–450 W), but questionable during sprint efforts (>500 W), where they are affected by
the gear ratio used (PowerTap) and by their low accuracy in cadence recording (PowerTap and
Power2Max).
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