Wearable Technology

Document Type



Many triathletes cycle indoors when impacted by inclement road and weather conditions. In these situations, using a magnetic cycle ergometer (a turbo trainer) provides an alternative training solution. The purpose of this preliminary study was to investigate the biomechanical differences of torso kinematics during cycling on a magnetic turbo trainer compared with overground cycling. Triathletes (n=5) performed a varied 21 minute cycling cadence protocol in their familiar aerodynamic position on a magnetic resistance turbo trainer and a 21 minute overground cycle in their natural training environment whilst wearing a sacrum mounted triaxial accelerometer. Overground cycling significantly impacted anteroposterior torso kinematics (f = 7.92, p0.9) compared to turbo cycling. Despite no significant difference in cumulative triaxial acceleration magnitudes (p>0.05), post-hoc analysis revealed significant variations when observed at each cadence change and epoch with increases to root mean square (RMS) values in overground cycling. Triathletes may need to consider torso position when cycling using different apparatus.