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Validity of power settings of the Wahoo KICKR Power Trainer

Citation

Zadow, EK and Kitic, CM and Wu, SSX 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, EK (Ms Emma Zadow)
Author:Kitic, CM (Dr Cecilia Kitic)
Author:Wu, SSX (Dr Sam Wu)
Author:Smith, ST (Associate Professor Stuart Smith)
Author:Fell, JW (Associate Professor James Fell)
ID Code:109474
Year Published:2016
Web of Science® Times Cited:1
Deposited By:Health Sciences
Deposited On:2016-06-20
Last Modified:2017-12-22
Downloads:52 View Download Statistics

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