In professional road cyclists, low pedaling cadences are less efficient

A Lucia, A F San Juan, M Montilla, S CaNete, A Santalla, Conrad P Earnest, M Perez

Research output: Contribution to journalArticlepeer-review

84 Citations (Scopus)

Abstract

PURPOSE: To determine the effects of changes in pedaling frequency on the gross efficiency (GE) and other physiological variables (oxygen uptake (VO2), HR, lactate, pH, ventilation, motor unit recruitment estimated by EMG) of professional cyclists while generating high power outputs (PO).

METHODS: Following a counterbalanced, cross-over design, eight professional cyclists (age (mean +/- SD): 26 +/- 2 yr, VO2max: 74.0 +/- 5.7 mL x kg x min) performed three 6-min bouts at a fixed PO (mean of 366 +/- 37 W) and at a cadence of 60, 80, and 100 rpm.

RESULTS: Values of GE averaged 22.4 +/- 1.7, 23.6 +/- 1.8 and 24.2 +/- 2.0% at 60, 80, and 100 rpm, respectively. Mean GE at 100 rpm was significantly higher than at 60 rpm (P < 0.05). Similarly, mean values of VO2, HR, rates of perceived exertion (RPE), lactate and normalized root-mean square EMG (rms-EMG) in both vastus lateralis and gluteus maximum muscles decreased at increasing cadences.

CONCLUSIONS: In professional road cyclists riding at high PO, GE/economy improves at increasing pedaling cadences.

Original languageEnglish
Pages (from-to)1048-1054
Number of pages7
JournalMedicine and Science in Sports and Exercise
Volume36
Issue number6
Publication statusPublished - 2004

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