System and method for physical activity performance analysis
A method for providing feedback to a skier, comprising: receiving, by a feedback computer, sensor data from a plurality of sensors associated with the skier, the sensor data representing a movement of the skier during a ski run; receiving, by the feedback computer, video data representing a video recording of the skier during the ski run; after the ski run, synchronizing, by the feedback computer, the sensor data and the video data; and simultaneously displaying, on a display screen in electrical communication with the feedback computer, the video recording and the sensor data.
1. A method for providing feedback to a skier, the method comprising:
receiving, by a feedback computer, sensor data from a plurality of sensors associated with the skier, the sensor data representing a movement of the skier during a ski run;
receiving, by the feedback computer, video data representing a video recording of the skier during the ski run;
after the ski run, synchronizing, by the feedback computer, the sensor data and the video data; and
simultaneously displaying, on a display screen in electrical communication with the feedback computer, the video recording and the sensor data.
2. The method of claim 1 , wherein the sensor data is displayed alongside the video recording.
3. The method of claim 1 , wherein the sensor data and the video data are synchronized using time stamps.
4. The method of claim 1 , wherein the sensor data includes processed data that indicates a performance metric of the skier during the ski run.
5. The method of claim 4 , wherein the sensors are located in a phone carried by the skier and/or in a watch worn by the skier.
6. The method of claim 5 , wherein:
the ski run includes a plurality of ski turns, and
the performance metric includes a position of an upper body of the skier during each ski turn.
7. The method of claim 6 , wherein the position of the upper body includes a yaw of the upper body.
8. The method of claim 7 , further comprising transmitting the performance metric to the skier after the user completes each ski turn.
9. The method of claim 4 , wherein the sensors are located in a ski pole held by the skier and/or in a glove worn by the skier.
10. The method of claim 4 , wherein the sensors include:
first sensors located in a phone carried by the skier and/or in a watch worn by the skier, and
second sensors located in a ski boot and/or on a ski of the skier.
11. The method of claim 10 , wherein the performance metric includes:
an upper-body yaw of the skier during each ski turn, the upper-body yaw determined using the sensor data from the first sensors, and
a ski yaw during each ski turn, the ski yaw determined using the sensor data from the second sensors.
12. The method of claim 11 , further comprising determining a magnitude of a covariance of the upper-body yaw compared to the ski yaw.
13. The method of claim 10 , wherein:
the seconds sensors are located in a first ski boot or a first ski of the skier and in a second ski boot or a second ski of the skier, and
the method further comprising determining a lead/lag relationship between the first and second skis and an upper body of the skier.
14. A method comprising:
receiving, at a computer, sensor data from at least one sensor associated with a skier, the sensor data acquired during a ski run that includes a plurality of ski turns;
processing, with the computer, the sensor data to form processed data that indicates a performance metric of the skier during each ski turn;
transmitting the processed data to a feedback device associated with the skier; and
providing feedback to the skier, with the feedback device, after each ski turn regarding a performance of the skier for a respective ski turn.
15. The method of claim 14 , wherein the at least one sensor includes global positioning system circuitry, an accelerometer, a gyroscope, and/or a magnetometer.
16. The method of claim 15 , wherein:
the at least one sensor is/are located in a phone carried by the skier and/or in a watch worn by the skier, and
the performance metric includes a position of an upper body of the skier during each ski turn.
17. The method of claim 16 , wherein the position of the upper body includes a yaw of the upper body.
18. The method of claim 15 , wherein the at least one sensor is/are located in a ski pole held by the skier and/or in a glove worn by the skier.