Abstract: Provided is a technique that can improve a physical sensation of a user during treatment. A low-frequency treatment device according to one aspect of the present invention includes a pad portion configured to be able to supply a low-frequency pulse current to a contact target, and an output unit configured to output, during supply of the low-frequency pulse current by the pad portion, at least one of light and sound synchronized with a change in a supply state of the low-frequency pulse current. For example, the low-frequency treatment device according to one aspect of the present invention includes a control unit configured to perform control of supply of the low-frequency pulse current by the pad portion and control, in conjunction with the control of supply of the low-frequency pulse current, of output of at least one of the light and sound by the output unit.

Abstract: A performance measurement device according to one or more aspects is configured to acquire sensing data obtained by measuring an activity relating to at least one of sensory activity and physical activity for a relevant worker; analyze the sensing data acquired and thereby calculate a performance index for each of the basic operations; compare the performance index required for each of the basic operations in a work step and the performance index calculated for each of the basic operations; and assign the worker a second work step where the performance index calculated for each of the basic operations satisfies a predetermined criterion in relation to the required performance index for each of the basic operations.

Abstract: A degree of reliability of blood pressure data including a blood pressure value for each heartbeat, which is obtained by measuring blood pressure using one or more pressure sensors, is calculated. A blood pressure measurement apparatus according to an aspect includes: a blood pressure meter configured to obtain blood pressure data including a blood pressure value for each heartbeat by detecting a pressure pulse wave using one or more sensors; an extraction unit configured to extract one or more feature amounts of the blood pressure data; and a calculation unit configured to calculate a degree of reliability indicating how accurately the blood pressure data indicates the blood pressure values, based on the feature amount.

Abstract: A predicted menstruation start date calculation apparatus includes a date information acquisition unit that acquires a number of menstrual cycle days and a number of high temperature phase days over multiple menstrual cycles of a woman, a type classification unit that performs classification into a specific type indicating that the number of menstrual cycle days is unstable and the number of high temperature phase days is stable, and into one or more types other than the specific type, and a calculation unit that calculates the predicted menstruation start date based on the classification by the type classification unit.