Abstract
Purpose The aim of this work was to study the effect of ergometer cycling condition on the electromyographic (EMG) activity of muscles involved in pedalling. Methods and results Seven trained cyclists performed four pedalling trials of three minutes at 70% of maximal aerobic power on a treadmill with a slope of 4% and on an Axiom stationary ergometer Two postures (seated and standing pedalling) were also studied. The global EMG activity of lower limb (sum of the activity of all muscles) is higher when cyclists pedal on Axiom ergometer compared when they cycle on treadmill for the same power output and regardless the body's posture. Conclusion The increase of muscular activity during the stationary ergometer exercise can be due to the lack of lateral and sagital sways of bicycle and also to the constant Axiom brake force which enhanced cyclists to sustain a higher force pedal during each crank cycle.
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