Nike, Inc.

Aaron K Goodwin

James Mathew Mullin

John Michael Schmitt

Steven H Walker

Jordan M Rice

SantoshKumar Balakrishnan

Adam S Carroll

Joshua Rooke-Ley

Corey Dow-Hygelund

Tye L Rattenbury

Aaron B Weast

Aspects relate to calculating energy expenditure values from an apparatus configured to be worn on an appendage of a user. Steps counts may be quantified, such as by detecting arm swings peaks and bounce peaks in motion data. A search range of acceleration frequencies related to an expected activity may be established. Frequencies of acceleration data within a search range may be analyzed to identify one or more peaks, such as a bounce peak and an arm swing peak. Novel systems and methods may determine whether to utilize the arm swing data, bounce data, and/or other data or portions of data to quantify steps. The number of peaks (and types of peaks) may be used to choose a step frequency and step magnitude. At least a portion of the motion data may be classified into an activity category based upon the quantification of steps.

Energy expenditure

Activities, actions and events during user performance of physical activity may be detected using various algorithms and templates. Templates may include an arrangement of one or more states that may identify particular event types and timing between events. Templates may be specific to a particular type of activity (e.g., types of sports, drills, events, etc.), user, terrain, time of day and the like.

Action detection and activity classification

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Bend, OR, United States of America

Aaron K Goodwin