From Jennifer Bove's phd thesis:
The primary goal of my research is to explore the changing role of the
mobile phone as a personal device, and how the mobile phone could
adapt to become a dedicated device, designed to fit particular
aspects of our lives. Here, I explore the role of the mobile phone in
the life of an athletic, active user, and how mobile functions and
services might be tailored to the context running. Taking into
consideration the mindset of a user while running, I look at their
physical and psychological needs and motivations, and design
specifically for use during their workouts.