Method and Apparatus for Measuring Pulse Rate and Oxygen Saturation Achieved During Exercise

An apparatus configured to measure a pulse rate and an oxygen saturation of a subject who is in an exercised state, comprising:

• a separator, configured to separate each of two pulse wave signals obtained from the subject into a signal component and a noise component;
• a spectra obtainer, configured to obtain a frequency spectrum of the signal component and a frequency spectrum of the noise component;
• a judge, configured to judge whether a body motion of the subject is occurred based on the frequency spectrum of the signal component and the frequency spectrum of the noise component;
• a pulsation frequency determinant, configured to determine a pulsation frequency based on the judgment as to the body motion;
• a pulse rate calculator, configured to calculate the pulse rate based on the pulsation frequency;
• and
• an oxygen saturation calculator, configured to calculate the oxygen saturation based on a ratio of spectra of the two pulse wave signals corresponding to the pulsation frequency.