The Reliability and Validity of the PowerTap P1 Power Pedals Before and After 100 Hours of Use

in International Journal of Sports Physiology and Performance
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Purpose: To (1) evaluate agreement between the PowerTap P1 (P1) pedals and the Lode Excalibur Sport cycle ergometer, (2) investigate the reliability of the P1 pedals between repeated testing sessions, and (3) compare the reliability and validity of the P1 pedals before (P10) and after (P1100) ∼100 h of use. Methods: Ten participants completed four 5-min submaximal cycling bouts (100, 150, 200, and 250 W), a 2-min time trial, and two 10-s all-out sprints on 2 occasions. This protocol was repeated after 15 mo and ∼100 h of use. Results: Significant differences were seen between the P10 pedals and the Lode Excalibur Sport at 100 W (P = .006), 150 W (P = .006), 200 W (P = .001), and 250 W (P = .006) and during the all-out sprints (P = .020). After ∼100 h of use, the P1100 pedals did not significantly differ from the Lode Excalibur Sport at 100 W (P = .799), 150 W (P = .183), 200 W (P = .289), and 250 W (P = .183), during the 2-min time trial (P = .583), or during the all-out sprints (P = .412). The coefficients of variation for the P10 and P1100 ranged from 0.6% to 1.3% and 0.5% to 2.0%, respectively, during the submaximal cycling bouts. Conclusion: The P1 pedals provide valid data after ∼100 h of laboratory use. Furthermore, the pedals provide reliable data during submaximal cycling, even after prolonged use.

Wright, Walker, and Burnet are with the School of Sport, Health and Social Sciences, Solent University, Southampton, United Kingdom. Jobson is with the Dept of Sport, Exercise and Health, University of Winchester, Winchester, United Kingdom.

Wright (james.wright@solent.ac.uk) is corresponding author.
International Journal of Sports Physiology and Performance
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References
  • 1.

    Paton CDHopkins WG. Tests of cycling performance. Sports Med. 2001;31(7):489496. PubMed ID: 11428686 doi:10.2165/00007256-200131070-00004

  • 2.

    Earnest CPWharton RPChurch TSLucia A. Reliability of the Lode Excalibur Sport Ergometer and applicability to Computrainer electromagnetically braked cycling training device. J Strength Cond Res. 2005;19(2):344348. PubMed ID: 15903373

    • PubMed
    • Search Google Scholar
    • Export Citation
  • 3.

    Driller MW. The reliability of a 30-minute performance test on a Lode cycle ergometer. J Sci Cycling. 2012;1(2):2127.

  • 4.

    Bini RRCarpes FP. Biomechanics of Cycling. Basel, Switzerland: Springer; 2014.

  • 5.

    Jones SMPassfield L. The dynamic calibration of bicycle power measuring cranks. In: Haake SJ ed. The Engineering of Sport. Oxford, UK: Blackwell; 1998:265274.

    • Search Google Scholar
    • Export Citation
  • 6.

    Sparks SADove BBridge CAMidgley AWMcNaughton LR. Validity and reliability of the look Keo power pedal system for measuring power output during incremental and repeated sprint cycling. Int J Sports Physiol Perform. 2015;10:3945. PubMed ID: 24896154 doi:10.1123/ijspp.2013-0317

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 7.

    Pallarés JGLillo-Bevia JR. Validity and reliability of the PowerTap P1 pedals power meter. J Sports Sci Med. 2018;17:305311.

  • 8.

    Zadow EKitic CWu SXFell JW. Reliability of power setting of the Wahoo KICKR power trainer after 60 hours of use. Int J Sports Physiol Perform. 2018;13(1):119121. PubMed ID: 28459298 doi:10.1123/ijspp.2016-0732

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 9.

    Hopkins WG. A new view on statistics. Internet Society for Sport Science. 2000. http://www.sportsci.org/resource/stats/. Accessed July 6 2018.

    • Search Google Scholar
    • Export Citation
  • 10.

    Kirkland AColeman JWiles JDHopker J. Validity and reliability of the Ergomo®Pro powermeter. Int J Sports Med. 2008;29:913916. PubMed ID: 18512176 doi:10.1055/s-2008-1038621

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 11.

    Folland JPStern RBrickley G. Sodium phosphate loading improves laboratory cycling time-trial performance in trained cyclist. J Sci Med Sport. 2008;11:464468. PubMed ID: 17569583 doi:10.1016/j.jsams.2007.04.004

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 12.

    Bertucci WDuc SVillerius VPernin JNGrappe F. Validity and reliability of the PowerTap mobile cycling powermeter when compared with the SRM device. Int J Sports Med. 2005;26:868873. PubMed ID: 16320172 doi:10.1055/s-2005-837463

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
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