Anaerobic threshold estimation method and device

An anaerobic threshold estimation method comprising:

• acquiring exercise intensity of exercise done by a target person;
• acquiring an electrocardiographic waveform of the target person;
• acquiring a predetermined feature amount from the electrocardiographic waveform;
• and
• estimating an anaerobic threshold of the target person based on a relationship between the predetermined feature amount and the exercise intensity, wherein estimating the anaerobic threshold comprises estimating the anaerobic threshold of the target person based on exercise intensity corresponding to an inflection point in a change of the predetermined feature amount with respect to the exercise intensity, wherein the predetermined feature amount is a height of a T wave included in the electrocardiographic waveform, and wherein acquiring the predetermined feature amount comprises:
• acquiring an RS height from a peak value of an R wave to a peak value of an S wave, wherein the R wave and the S wave are included in the electrocardiographic waveform;
• and
• normalizing the height of the T wave using the RS height, a height of the R wave, or a depth of the S wave.

An anaerobic threshold estimation device comprising:

• one or more processors;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the one or more processors, the program including instructions for:
• acquiring exercise intensity of exercise done by a target person;
• acquiring an electrocardiographic waveform of the target person;
• acquiring a predetermined feature amount from the electrocardiographic waveform;
• and
• estimating an anaerobic threshold of the target person based on a relationship between the predetermined feature amount and the exercise intensity, the anaerobic threshold of the target person is estimated based on exercise intensity corresponding to an inflection point in a change of the predetermined feature amount with respect to the exercise intensity, wherein the predetermined feature amount is a height of the T wave included in an electrocardiographic waveform multiplied by a heart rate.

An anaerobic threshold estimation device comprising:

• one or more processors;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the one or more processors, the program including instructions for:
• acquiring exercise intensity of exercise done by a target person;
• acquiring an electrocardiographic waveform of the target person;
• acquiring a predetermined feature amount from the electrocardiographic waveform;
• estimating an anaerobic threshold of the target person based on a relationship between the predetermined feature amount and the exercise intensity, the anaerobic threshold of the target person is estimated based on exercise intensity corresponding to an inflection point in a change of the predetermined feature amount with respect to the exercise intensity, wherein the predetermined feature amount is a height of a T wave included in the electrocardiographic waveform;
• acquiring an RS height from a peak value of an R wave to a peak value of an S wave, wherein the R wave and the S wave are included in the electrocardiographic waveform;
• and
• normalizing the height of the T wave using the RS height, a height of the R wave, or a depth of the S wave.