Lookup NU author(s): Nils Hammerla,
Professor Patrick Olivier,
Dr Thomas Ploetz
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In this paper, we present GymSkill, a personal trainer for ubiquitous monitoring and assessment of physi- cal exercises using standard fitness equipment. The system records and analyzes exercises using the sensors of a per- sonal smartphone, which is attached to the gym equipment. Novel fine-grained activity recognition techniques based on pyramidal Principal Component Breakdown Analysis provide a quantitative analysis of the quality of human movements. In addition to overall quality judgments, GymSkill identifies interesting portions of the recorded sensor data and provides suggestions for improving the individual exercises, thereby ex- tending existing work. The system was evaluated in a practical case study where participants performed a variety of exercises on balance boards. GymSkill successfully assessed the quality of the exercises in agreement with the professional judgment provided by a physiotherapist. User feedback suggests that GymSkill has the potential to serve as an effective tool for motivating and supporting lay people to overcome sedentary, unhealthy lifestyles.
Author(s): Moeller A, Roalter L, Diewald S, Kranz M, Hammerla N, Olivier P, Ploetz T
Publication type: Conference Proceedings (inc. Abstract)
Conference Name: International Conference on Pervasive Computing and Communications (PerCom)
Year of Conference: 2012
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