Swimming posture correction method and swimming posture correction system

A swimming posture correction method adapted to correct a swimming posture of a swimmer by a computing device using at least two gravity sensors (G-sensors), wherein the G-sensors are respectively disposed at ends of at least two limbs of the swimmer performing a relative stroke action, the method comprising the steps of:

• obtaining at least one body parameter of the swimmer to capture a reference index of coordination for performing a swimming posture suitable for the body parameter;
• monitoring the stroke action of the at least two limbs by using the G-sensors to obtain a timing diagram of the at least two limbs performing a stroke promotion action;
• analyzing the timing diagram to calculate an index of coordination of the swimmer;
• and
• comparing the calculated index of coordination with the reference index of coordination to prompt for correcting the swimming posture according to a comparison result,
• wherein the step of obtaining the timing diagram of the at least two limbs performing the stroke promotion action by monitoring the stroke action of the at least two limbs through using the G-sensors comprises:
• detecting a position of each of the limbs by using the G-sensors;
• calculating a time at which the position of each of the limbs is below level surface as a time of performing the stroke promotion action;
• and
• establishing the timing diagram of the stroke promotion action by using the calculated time and a sequence of performing the stroke promotion action by each of the limbs.