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APDS9960
Proximity + Light
Sport-Specific Performance Metrics
Sprint Top Speed
Peak velocity reached in a sprint event — GPS-grade speed data without the GPS subscription
Distance Covered
Event-accurate distance logging — from 100m to mile repeats
Sprint Count
Max-effort sprint reps per practice — volume tracking for speed coaches
Player Load
Cumulative biomechanical load — manage weekly sprint volume before a meet
Effort / Work Rate
Near-max effort sports need load monitoring — identify athletes who hold back in practice
Direction Changes
Relevant for 200m, 400m, and hurdle events — curve-running mechanics
Elevation Gain
Hill sprint sessions and cross-country courses — altitude training quantification
Heat Stress Index
Summer outdoor meets — real-time Heat Stress Index for safe warm-weather competition
■ FULL SENSOR READOUT
| Metric |
Source Sensor |
What It Tells You |
| Player Load |
LSM6DS3TR-C Accel |
Total mechanical work done |
| Sprint Count |
LSM6DS3TR-C Accel |
Explosive effort frequency |
| Sprint Top Speed |
LSM6DS3TR-C Accel+Gyro |
Peak velocity estimate |
| Jump Count |
LSM6DS3TR-C Accel |
Vertical effort frequency |
| Jump Height (cm) |
LSM6DS3TR-C Accel |
Vertical power output |
| Impact Events |
LSM6DS3TR-C Accel |
Contact load detection |
| Direction Changes |
LSM6DS3TR-C Accel+Gyro |
Agility / cut load |
| Rotation Speed (deg/s) |
LSM6DS3TR-C Gyro |
Rotational power |
| Effort / Work Rate % |
LSM6DS3TR-C Accel+Gyro |
Session intensity index |
| Distance (m) |
LSM6DS3TR-C Accel |
Estimated total movement |
| Temperature (°F) |
SHT31 |
Environmental heat load |
| Humidity % |
SHT31 |
Heat stress context |
| Altitude / Elevation (m) |
BMP280 |
Vertical displacement |
| Barometric Pressure |
BMP280 |
Environmental baseline |
| Compass Heading |
LIS3MDL Magnetometer |
Movement orientation |
| Ambient Light Level |
APDS9960 |
Indoor vs outdoor context |
| Worn Detection |
APDS9960 Proximity |
Auto session start/stop |
⚖ NFHS RULE STATUS
NFHS Track & Field Rule 3-2 covers competitor equipment. BLE-only, non-GPS performance sensors do not collect position data. Event referee approval required before sanctioned use.