Abstract: A sleep evaluation device (1) has a sensor unit (2) that constantly detects body movements of a human subject on bedding, and has a determiner that, based on results of detection, determines a sleep state and an aroused state of the human subject. The determiner quantifies results of detection of the sensor unit into N number of body movement data (where, N is a positive integral number satisfying N?2) and obtains, based on G number of standard deviations for each of G groups (in which G is an integral number satisfying 2?G<N) dividing N number of body movement data and for each body movement data and gs (gs<G) number of standard deviations selected therefrom, L number of average value of standard deviations (where L is an integral number satisfying 2?L?G). The determination of a sleep state and an aroused state of the human subject is based on G number of standard deviations and L number of average values of standard deviations.

Abstract: A sleep evaluation device 1 is provided with a respiration detection unit 7 that detects changes in respiration and outputs respiration signals. CPU 6 generates six primary parameters indicating sleep states based on the respiration signals and four secondary parameters based on the primary parameters. The secondary parameters are linearly independent of one another. Evaluation unit 20 computes a sleep score indicating the degree of the quality of sleep by multiplying each of the four secondary parameters by second coefficients and totalizing results of the multiplications. Results of the evaluations are displayed on display unit 4.

Abstract: An apparatus for measuring calories consumed during sleep comprises determination means for determining a breathing/heartbeat oscillation, a body motion and an the intensity of the body motion, coefficient calculation means for calculating a coefficient which is a reference value for calculating calories consumed during sleep, based on the signals in a given period of breathing/heartbeat oscillation and a sleep metabolic rate, consumed calorie calculation means for calculating calories consumed during sleep, based on consumed calories according to the magnitude of each signal and the coefficient, and storage means for storing various arithmetic expressions in advance. Accordingly, the present apparatus makes it possible to acquire calories consumed by the motions of the body of an individual subject in more detail and to measure calories consumed during sleep more accurately.

Abstract: A sleep evaluation device (1) has a sensor unit (2) that constantly detects body movements of a human subject on bedding, and has a determiner that, based on results of detection, determines a sleep state and an aroused state of the human subject. The determiner quantifies results of detection of the sensor unit into N number of body movement data (where, N is a positive integral number satisfying N?2) and obtains, based on G number of standard deviations for each of G groups (in which G is an integral number satisfying 2?G<N) dividing N number of body movement data and for each body movement data and gs (gs<G) number of standard deviations selected therefrom, L number of average value of standard deviations (where L is an integral number satisfying 2?L?G). The determination of a sleep state and an aroused state of the human subject is based on G number of standard deviations and L number of average values of standard deviations.

Abstract: A sleep evaluation device 1 is provided with a respiration detection unit 7 that detects changes in respiration and outputs respiration signals. CPU 6 generates six primary parameters indicating sleep states based on the respiration signals and four secondary parameters based on the primary parameters. The secondary parameters are linearly independent of one another. Evaluation unit 20 computes a sleep score indicating the degree of the quality of sleep by multiplying each of the four secondary parameters by second coefficients and totalizing results of the multiplications. Results of the evaluations are displayed on display unit 4.

Abstract: Disclosed is a sleep stage determination apparatus which comprises respiratory-signal detection means for detecting a variation of a respiratory signal from the body of a human subject, and sleep-stage determination means for determining a plurality of sleep stages using only the respiratory-signal variation. The sleep stage determination apparatus of the present invention can eliminate the need for detecting a plurality of biological signals and have simplified sensor and circuit configurations designed to detect only the respiratory signal variation which is relatively easily detectable. This makes it possible to reduce a detection error and achieve enhanced determination accuracy or creditability.

Abstract: An apparatus for measuring calories consumed during sleep comprises determination means for determining a breathing/heartbeat oscillation, a body motion and an the intensity of the body motion, coefficient calculation means for calculating a coefficient which is a reference value for calculating calories consumed during sleep, based on the signals in a given period of breathing/heartbeat oscillation and a sleep metabolic rate, consumed calorie calculation means for calculating calories consumed during sleep, based on consumed calories according to the magnitude of each signal and the coefficient, and storage means for storing various arithmetic expressions in advance. Accordingly, the present apparatus makes it possible to acquire calories consumed by the motions of the body of an individual subject in more detail and to measure calories consumed during sleep more accurately.

Abstract: There are provided a device which can measure a reaction performance of a neurotransmission system and that of a muscle expansion/contraction system in a specific body part easily, and gives a direction that a muscle in a specific body part is to be in an unreacted state by muscle unreacted state directing means, gives a direction that the muscle in the part is to be shifted into a reacted state by muscle reacted state directing means, continuously measures impedance and time until the reaction of the muscle in the part is completed after it has been directed that the muscle in the part is to be in the reacted state by impedance measuring means and timing means, and computes the reaction time of a neurotransmission system and the reaction time of a muscle expansion/contraction system based on these continuously measured impedance and time by individual system reaction time computing means.

Abstract: Disclosed is a sleep stage determination apparatus which comprises respiratory-signal detection means for detecting a variation of a respiratory signal from the body of a human subject, and sleep-stage determination means for determining a plurality of sleep stages using only the respiratory-signal variation. The sleep stage determination apparatus of the present invention can eliminate the need for detecting a plurality of biological signals and have simplified sensor and circuit configurations designed to detect only the respiratory signal variation which is relatively easily detectable. This makes it possible to reduce a detection error and achieve enhanced determination accuracy or creditability.

Abstract: An apparatus is provided which allows a subject to determine by himself/herself whether or not he/she is apt to develop a deep-vein thrombosis in a region of a lower limb in a simple manner. A variation between the bioelectric impedance values measured respectively before and after a posture change is compared with a reference value. The posture change includes a bending and stretching exercise, a bending and stretching in knees in a seated position and a repeating of standing-up and sitting-down motion. Alternatively, a blood storage capacity of the lower limb region may be estimated from a gradient of bioelectric impedance represented by a variation thereof per unit time to determine whether or not the subject is apt to develop deep-vein thrombosis in the lower limb region.

Abstract: There are provided a device which can measure a reaction performance of a neurotransmission system and that of a muscle expansion/contraction system in a specific body part easily, and gives a direction that a muscle in a specific body part is to be in an unreacted state by muscle unreacted state directing means, gives a direction that the muscle in the part is to be shifted into a reacted state by muscle reacted state directing means, continuously measures impedance and time until the reaction of the muscle in the part is completed after it has been directed that the muscle in the part is to be in the reacted state by impedance measuring means and timing means, and computes the reaction time of a neurotransmission system and the reaction time of a muscle expansion/contraction system based on these continuously measured impedance and time by individual system reaction time computing means.

Abstract: The impedance based muscular strength measuring device selects and inputs a muscle in a specific body part to be measured by muscle selecting/inputting means, directs that the muscle is to be relaxed by muscle relaxed state directing means and that the muscle is to be tensed by muscle tensed state directing means, measures the impedance of the relaxed muscle and the impedance of the tensed muscle by impedance measuring means, computes the rate of change in impedance between the relaxed muscle and the tensed muscle by impedance change rate computing means, selects a muscular strength regression formula corresponding to the selected muscle from a plurality of formulae stored in muscular strength regression formula storing means by muscular strength regression formula selecting means, and computes the muscular strength of the specific body part corresponding to the rate of change in impedance by use of the formula by muscular strength computing means.

Abstract: Disclosed is an impedance type thickness measurement device, comprising: an impedance measurement unit; and an arithmetic unit. According to the present invention said impedance measurement unit measures the impedance of a part of a body to be measured, and said arithmetic unit calculates the actually measured thickness of the part of the body, based on the impedance measured by said impedance measurement unit.

Abstract: An apparatus is provided which allows a subject to determine by himself/herself whether or not he/she has a status apt to develop a deep-vein thrombosis in a region of lower limb in a simple manner. A subject is instructed to change his/her body orientation from one to another so as to apply a load to muscles in the lower limb region and thereby to force the blood having stored in the lower limb deep-vein to be circulated entirely across the body by a muscular pumping action. By measuring the bioelectric impedance at this time, a transfer of body fluid (blood) within the body can be captured. A motion for changing the posture includes a bending and stretching exercise, a bending and stretching in knees in a seated position and a repeating of standing-up and sitting-down motion, and a variation between the bioelectric impedance values measured respectively before and after such a posture change is compared with a reference value.