The Power Profile Predicts Road Cycling MMP

Abstract

Laboratory tests of fitness variables have previously been shown to be valid predictors of cycling time-trial performance. However, due to the influence of drafting, tactics and the variability of power output in mass-start road races, comparisons between laboratory tests and competition performance are limited. The purpose of this study was to compare the power produced in the laboratory Power Profile (PP) test and Maximum Mean Power (MMP) analysis of competition data. Ten male cyclists (mean±SD: 20.8±1.5 y, 67.3±5.5 kg, V˙O_2max 72.7±5.1 mL·kg⁻¹·min⁻¹) completed a PP test within 14 days of competing in a series of road races. No differences were found between PP results and MMP analysis of competition data for durations of 60–600 s, total work or estimates of critical power and the fixed amount of work that can be completed above critical power (W’). Self-selected cadence was 15±7 rpm higher in the lab. These results indicate that the PP test is an ecologically valid assessment of power producing capacity over cycling specific durations. In combination with MMP analysis, this may be a useful tool for quantifying elements of cycling specific performance in competitive cyclists.

maximum mean power - critical power - self-selected cadence

References

• 1 Abbiss CR, Straker L, Quod M, Martin D, Laursen PB. Examining pacing profiles in elite female road cyclists using exposure variation analysis.  Br J Sports Med. 2008;  (Epub ahead of print)
• 2 Balmer J, Davison RC, Bird SR. Peak power predicts performance power during an outdoor 16.1-km cycling time trial.  Med Sci Sports Exerc. 2000;  32 1485-1490
• 3 Bertucci W, Taiar R, Grappe F. Differences between sprint tests under laboratory and actual cycling conditions.  J Sports Med Phys Fitness. 2005;  45 277-283
• 4 Cohen J. Statistical Power Analysis for the Behavioural Sciences. 2nd ed: Lawrence Erlbaum Associates; 1988: 567
• 5 Coyle EF, Feltner ME, Kautz SA, Hamilton MT, Montain SJ, Baylor AM, Abraham LD, Petrek GW. Physiological and biomechanical factors associated with elite endurance cycling performance.  Med Sci Sports Exerc. 1991;  23 93-107
• 6 Ebert TR, Martin DT, McDonald W, Victor J, Plummer J, Withers RT. Power output during women's World Cup road cycle racing.  Eur J Appl Physiol. 2005;  95 529-536
• 7 Ebert TR, Martin DT, Stephens B, Withers RT. Power output during a professional men's road-cycling tour.  Int J Sports Physiol Perform. 2006;  1 324-335
• 8 Edwards AG, Byrnes WC. Aerodynamic characteristics as determinants of the drafting effect in cycling.  Med Sci Sports Exerc. 2007;  39 170-176
• 9 Gaesser GA, Carnevale TJ, Garfinkel A, Walter DO, Womack CJ. Estimation of critical power with nonlinear and linear models.  Med Sci Sports Exerc. 1995;  27 1430-1438
• 10 Gardner AS, Martin JC, Martin DT, Barras M, Jenkins DG. Maximal torque- and power-pedaling rate relationships for elite sprint cyclists in laboratory and field tests.  Eur J Appl Physiol. 2007;  101 287-292
• 11 Gardner AS, Stephens S, Martin DT, Lawton E, Lee H, Jenkins D. Accuracy of SRM and power tap power monitoring systems for bicycling.  Med Sci Sports Exerc. 2004;  36 1252-1258
• 12 Hansen E, Smith G. Factors affecting cadence choice during submaximal cycling and cadence influence on performance.  Int J Sport Physiol Perform. 2009;  4 3-17
• 13 Harriss DJ, Atkinson G. International Journal of Sports Medicine – Ethical Standards in Sport and Exercise Science Research.  Int J Sports Med. 2009;  30 701-702
• 14 Hawley JA, Noakes TD. Peak power output predicts maximal oxygen uptake and performance time in trained cyclists.  Eur J Appl Physiol. 1992;  65 79-83
• 15 Hoogeveen AR, Hoogsteen GS. The ventilatory threshold, heart rate, and endurance performance: relationships in elite cyclists.  Int J Sports Med. 1999;  20 114-117
• 16 Jeukendrup AE, Moseley L, Mainwaring GI, Samuels S, Perry S, Mann CH. Exogenous carbohydrate oxidation during ultraendurance exercise.  J Appl Physiol. 2006;  100 1134-1141
• 17 Lepers R, Hausswirth C, Maffiuletti N, Brisswalter J, van Hoecke J. Evidence of neuromuscular fatigue after prolonged cycling exercise.  Med Sci Sports Exerc. 2000;  32 1880-1886
• 18 Lucia A, Hoyos J, Chicharro JL. Preferred pedalling cadence in professional cycling.  Med Sci Sports Exerc. 2001;  33 1361-1366
• 19 Palmer GS, Dennis SC, Noakes TD, Hawley JA. Assessment of the reproducibility of performance testing on an air-braked cycle ergometer.  Int J Sports Med. 1996;  17 293-298
• 20 Palmer GS, Hawley JA, Dennis SC, Noakes TD. Heart rate responses during a 4-d cycle stage race.  Med Sci Sports Exerc. 1994;  26 1278-1283
• 21 Smith MF, Davison RC, Balmer J, Bird SR. Reliability of mean power recorded during indoor and outdoor self-paced 40 km cycling time-trials.  Int J Sports Med. 2001;  22 270-274
• 22 Vercruyssen F, Hausswirth C, Smith D, Brisswalter J. Effect of exercise duration on optimal pedaling rate choice in triathletes.  Can J Appl Physiol. 2001;  26 44-54
• 23 Vogt S, Schumacher YO, Roecker K, Dickhuth HH, Schoberer U, Schmid A, Heinrich L. Power output during the Tour de France.  Int J Sports Med. 2007;  28 756-761

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