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Validity of power settings of the Wahoo KICKR Power Trainer

Citation

Zadow, E and Kitic, C and Wu, SS and Smith, ST and Fell, JW, Validity of power settings of the Wahoo KICKR Power Trainer, International Journal of Sports Physiology and Performance, 11, (8) pp. 1115-1117. ISSN 1555-0273 (2016) [Refereed Article]


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Copyright Statement

Copyright 2016 Human Kinetics, Inc. Accepted for publication

DOI: doi:10.1123/ijspp.2015-0733

Abstract

Purpose: The purpose of this study was to assess the validity of power output settings of the Wahoo KICKR Power Trainer (KICKR) using a dynamic calibration rig (CALRIG) over a range of power outputs and cadences.

Methods: Using the KICKR to set power outputs, powers of 100-999W were assessed at cadences (controlled by the CALRIG) of 80, 90, 100, 110 and 120rpm.

Results: The KICKR displayed accurate measurements of power between 250-700W at cadences of 80-120rpm with a bias of -1.1% (95%LoA: -3.6-1.4%). A larger mean bias in power were observed across the full range of power tested, 100-999W 4.2% (95%LoA: -20.1-28.6%), due to larger biases between 100-200W and 750-999W (4.5%, 95%LoA:-2.3-11.3% and 13.0%, 95%LoA: -24.4-50.3%), respectively.

Conclusion: When compared to a CALRIG, the Wahoo KICKR Power Trainer has acceptable accuracy reporting a small mean bias and narrow limits of agreement in the measurement of power output between 250-700W at cadences of 80-120rpm. Caution should be applied by coaches and sports scientists when using the KICKR at power outputs of <200W and >750W due to the greater variability in recorded power.

Item Details

Item Type:Refereed Article
Keywords:calibration; cycling; ergometry; training
Research Division:Medical and Health Sciences
Research Group:Human Movement and Sports Science
Research Field:Human Movement and Sports Science not elsewhere classified
Objective Division:Health
Objective Group:Specific Population Health (excl. Indigenous Health)
Objective Field:Specific Population Health (excl. Indigenous Health) not elsewhere classified
Author:Zadow, E (Ms Emma Zadow)
Author:Kitic, C (Dr Cecilia Kitic)
Author:Wu, SS (Dr Sam Wu)
Author:Smith, ST (Associate Professor Stuart Smith)
Author:Fell, JW (Associate Professor James Fell)
ID Code:109474
Year Published:2016
Deposited By:Health Sciences
Deposited On:2016-06-20
Last Modified:2017-11-06
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