DETERMINING A SEDENTARY STATE OF A SUBJECT

摘要

Various embodiments relate to methods, devices, and systems for ascertaining a sedentary body posture of a subject including: determining if the subject is in a sedentary state when the subject is sedentary for a pre-determined time; receiving a heart rate signal for least one heart rate feature when the subject is in the sedentary state; deriving at least one heart rate feature value when the subject is in the sedentary state further including filtering an arousal value from the received heart rate signal, so as to reduce an influence of the arousal on the determination of the sedentary posture; and determining the sedentary body posture of the subject based on a comparison between the derived at least one heart rate feature value and a pre-determined range associated with the corresponding at least one heart rate feature, wherein for each sedentary body posture, a pre-determined range is stored.

主权项

1. A method of ascertaining a sedentary body posture of a subject, the method comprising:
determining if the subject is in a sedentary state, wherein the subject is determined to be in the sedentary state when the subject is being sedentary for at least a pre-determined time threshold; receiving a heart rate signal indicative of at least one heart rate feature of the subject; deriving, from the received heart rate signal, at least one heart rate feature value corresponding to the at least one heart rate feature, when the subject is determined to be in the sedentary state, wherein deriving the heart rate feature value further comprises filtering an arousal value from the received heart rate signal, so as to reduce an influence of the arousal on the determination of the sedentary posture; and determining the sedentary body posture of the subject based on a comparison between the derived at least one heart rate feature value and a pre-determined range associated with the corresponding at least one heart rate feature, wherein for each sedentary body posture a pre-determined range corresponding to the at least one heart feature is stored.