**Increasing the Intensity over Time of an Electric-Assist Bike Based on the User and Route: The Bike Becomes the Gym**

#### **Daniel H. De La Iglesia 1,\* ID , Juan F. De Paz <sup>1</sup> , Gabriel Villarrubia González <sup>1</sup> ID , Alberto L. Barriuso <sup>1</sup> , Javier Bajo <sup>2</sup> ID and Juan M. Corchado <sup>1</sup> ID**


Received: 27 October 2017; Accepted: 12 January 2018; Published: 14 January 2018

**Abstract:** Nowadays, many citizens have busy days that make finding time for physical activity difficult. Thus, it is important to provide citizens with tools that allow them to introduce physical activity into their lives as part of the day's routine. This article proposes an app for an electric pedal-assist-system (PAS) bicycle that increases the pedaling intensity so the bicyclist can achieve higher and higher levels of physical activity. The app includes personalized assist levels that have been adapted to the user's strength/ability and a profile of the route, segmented according to its slopes. Additionally, a social component motivates interaction and competition between users based on a scoring system that shows the level of their performances. To test the training module, a case study in three different European countries lasted four months and included nine people who traveled 551 routes. The electric PAS bicycle with the app that increases intensity of physical activity shows promise for increasing levels of physical activity as a regular part of the day.

**Keywords:** personalized assistance level; coaching; physical activity; electric bicycles
