The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 2003
Filed:
Aug. 24, 2000
Toshikazu Shiga, Kyoto, JP;
Tatsuya Kobayashi, Kyoto, JP;
Hiromi Kinoshita, Kyoto, JP;
Manabu Yoshimura, Kyoto, JP;
Omron Corporation, Kyoto, JP;
Abstract
In an exercise machine, when a measurement starts, an electrocardiographic signal is detected by an electrocardiographic sensor (ST ), a load drive is started (ST ), and heartbeat rate intervals of the electrocardiographic signal are sequentially obtained. A fluctuation of heartbeat rate intervals PI(n)% is obtained from a calculation formula in which the RR interval RR(n+1) of the current heartbeat is subtracted from the RR interval RR(n) of the previous heartbeat, which is then divided by RR(n) and multiplied by 100% (ST ). Entropy is calculated from 128 pieces of such PI (ST ). From the change of the entropy under the gradually increasing load (ST ), a minimum point of the entropy is obtained, which point is designated as an anaerobic threshold point (ST ). The load of the exercise machine is controlled employing this anaerobic threshold.