The Impact of Cycling Cadence on Respiratory and Hemodynamic Responses to Exercise

Medicine and Science in Sports and Exercise
Reid A MitchellJordan A Guenette

Abstract

The physiological consequences of freely chosen cadence during cycling remains poorly understood. We sought to determine the effect of cadence on the respiratory and hemodynamic response to cycling exercise. Eleven cyclists (10 males, 1 female; age, 27 ± 6 yr; V˙O2max = 60.8 ± 3.7 mL·kg·min) completed four, 6-min constant-load cycling trials at 10% below their previously determined gas exchange threshold (i.e., 63% ± 5% peak power) while pedaling at 60, 90, and 120 rpm, and a freely chosen cadence (94.3 ± 6.9 rpm) in randomized order. Standard cardiorespiratory parameters were measured and an esophageal electrode balloon catheter was used to assess electromyography of the diaphragm (EMGdi) and the work of breathing (Wb). Leg blood flow index (BFI) was determined on four muscles using near-infrared spectroscopy with indocyanine green dye injections. Oxygen uptake (V˙O2) increased as a function of increasing cadence (all pairwise comparisons, P < 0.05). The EMGdi and Wb were significantly greater at 120 rpm compared with all other conditions (all P < 0.01). Vastus medialis and semitendinosus BFI were significantly greater at 120 rpm compared with 60 and 90 rpm (all P < 0.05). Gastrocnemius BFI was higher at 120 rpm compared with ...Continue Reading

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Citations

Nov 10, 2020·European Journal of Applied Physiology·Michele GirardiMassimo Sacchetti
Nov 13, 2020·European Journal of Applied Physiology·Renan Vieira BarretoBenedito Sérgio Denadai
Oct 29, 2020·Experimental Physiology·Andrew H RamsookA William Sheel
Jul 25, 2021·European Journal of Applied Physiology·Casper SejersenNiels H Secher
Aug 20, 2021·Journal of Applied Physiology·Troy J CrossJoseph W Duke

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