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Open AccessArticle

Estimating Functional Threshold Power in Endurance Running from Shorter Time Trials Using a 6-Axis Inertial Measurement Sensor

1
Health Sciences Faculty, Universidad San Jorge, 50830 Zaragoza, Spain
2
Department of Sports and Physical Education, University of Granada, 18071 Granada, Spain
3
Department of Physical Education, Sports and Recreation, Universidad de La Frontera, Temuco 14811, Chile
*
Author to whom correspondence should be addressed.
Sensors 2021, 21(2), 582; https://doi.org/10.3390/s21020582
Received: 11 November 2020 / Revised: 10 January 2021 / Accepted: 12 January 2021 / Published: 15 January 2021
(This article belongs to the Special Issue Wearable Sensors & Gait)
Wearable technology has allowed for the real-time assessment of mechanical work employed in several sporting activities. Through novel power metrics, Functional Threshold Power have shown a reliable indicator of training intensities. This study aims to determine the relationship between mean power output (MPO) values obtained during three submaximal running time trials (i.e., 10 min, 20 min, and 30 min) and the functional threshold power (FTP). Twenty-two recreationally trained male endurance runners completed four submaximal running time trials of 10, 20, 30, and 60 min, trying to cover the longest possible distance on a motorized treadmill. Absolute MPO (W), normalized MPO (W/kg) and standard deviation (SD) were calculated for each time trial with a power meter device attached to the shoelaces. All simplified FTP trials analyzed (i.e., FTP10, FTP20, and FTP30) showed a significant association with the calculated FTP (p < 0.001) for both MPO and normalized MPO, whereas stronger correlations were found with longer time trials. Individual correction factors (ICF% = FTP60/FTPn) of ~90% for FTP10, ~94% for FTP20, and ~96% for FTP30 were obtained. The present study procures important practical applications for coaches and athletes as it provides a more accurate estimation of FTP in endurance running through less fatiguing, reproducible tests. View Full-Text
Keywords: aerobic; assessment; performance; physiology; technology; training; wearable aerobic; assessment; performance; physiology; technology; training; wearable
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MDPI and ACS Style

Cartón-Llorente, A.; García-Pinillos, F.; Royo-Borruel, J.; Rubio-Peirotén, A.; Jaén-Carrillo, D.; Roche-Seruendo, L.E. Estimating Functional Threshold Power in Endurance Running from Shorter Time Trials Using a 6-Axis Inertial Measurement Sensor. Sensors 2021, 21, 582. https://doi.org/10.3390/s21020582

AMA Style

Cartón-Llorente A, García-Pinillos F, Royo-Borruel J, Rubio-Peirotén A, Jaén-Carrillo D, Roche-Seruendo LE. Estimating Functional Threshold Power in Endurance Running from Shorter Time Trials Using a 6-Axis Inertial Measurement Sensor. Sensors. 2021; 21(2):582. https://doi.org/10.3390/s21020582

Chicago/Turabian Style

Cartón-Llorente, Antonio; García-Pinillos, Felipe; Royo-Borruel, Jorge; Rubio-Peirotén, Alberto; Jaén-Carrillo, Diego; Roche-Seruendo, Luis E. 2021. "Estimating Functional Threshold Power in Endurance Running from Shorter Time Trials Using a 6-Axis Inertial Measurement Sensor" Sensors 21, no. 2: 582. https://doi.org/10.3390/s21020582

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