Evaluation of the benefits in assisting cyclists to perform the pedal movement with real-time augmented feedback

Abstract

Purpose of the study was to investigate the influence of training with augmented feedback of the pedal forces on performing the pedal movement on a bicycle ergometer. The aim was (1) to assist cyclists in optimizing their pedal technique and (2) to improve their perception of the execution of the pedal movement. 21 male sport students (28.1 ± 3.8 years), randomly divided in three groups: no feedback (nF), visual feedback (vF) and audiovisual feedback (avF), completed four tests in two training sessions. The Wattbike cycling ergometer measured pedal forces and provided them as vF or avF. Also the participants’ subjective perception was requested. All groups reduced the amplitudes of force and power output, with the avF group showing the greatest change. There were improvements in the overall shape of the pedal cycle with avF which is reflected in a rounder and more consistent shape, and balanced between each leg (strong pushing and balanced pulling phase). Individual statements underline the possibility of a quick modification of the pedal technique after two training sessions with feedback. Most of the participants in the avF group could imagine a general use of the sound in regular training for assistance.