Fitness tracking system and method of operating a fitness tracking system

A fitness tracking system, comprising:

• a shoe configured to be worn by a user;
• a movement sensor mounted to the shoe and configured to generate movement data corresponding to bipedal movement of the user;
• and
• a controller mounted to the shoe and configured to:
• receive the movement data from the movement sensor;
• sample the movement data at a first sampling rate as first sampled data when operating in an activity detection mode;
• sample the movement data at a second sampling rate as second sampled data when operating in a workout mode, wherein the second sampling rate is greater than the first sampling rate;
• operate in the activity detection mode in response to determining that a cadence of the user determined from the second sampled data satisfies a cadence threshold;
• operate in the activity detection mode in response to determining that (i) the cadence of the user does not satisfy the cadence threshold, and (ii) a ground contact value of the user determined from the second sampled data satisfies a first ground contact threshold;
• and
• operate in the workout mode in response to determining that (i) the cadence of the user does not satisfy the cadence threshold, (ii) the ground contact value of the user does not satisfy the first ground contact threshold, and (iii) the ground contact value of the user satisfies a second ground contact threshold.

A fitness tracking system, comprising:

• a shoe configured to be worn by a user;
• a movement sensor mounted to the shoe and configured to generate movement data corresponding to bipedal movement of the user;
• and
• a controller mounted to the shoe and configured to:
• sample the movement data at a first sampling rate as first sampled data when operating in an activity detection mode;
• sample the movement data at a second sampling rate as second sampled data when operating in a pre-workout mode or a workout mode, wherein the second sampling rate is greater than the first sampling rate;
• and
• switch from operating in the pre-workout mode to operation in the workout mode in response to determining that (i) a cadence of the user determined from the second sampled data does not satisfy a cadence threshold, (ii) a ground contact value of the user determined from the second sampled data does not satisfy a first ground contact threshold, and (iii) the ground contact value of the user satisfies a second ground contact threshold.