The invention relates to methods, systems, and apparatus for monitoring
within-day energy balance deviation. One aspect of the invention includes
a method for automatically determining an energy balance deviation
associated with a person that includes providing a device capable of
being worn by or accompanying the person, the device adapted to receive
information related to the person's energy expenditure, energy intake,
and to display energy balance information. The method also includes
receiving at least one input associated with energy expenditure of a
person, receiving at least one input associated with energy intake of the
person, and calculating an energy balance function based in part on the
energy expenditure and the energy intake over a period of time.
Furthermore, the method includes designating at least one boundary for
comparison to said energy balance function, and displaying information
corresponding to said energy balance function and said at least one
boundary.
