## 4 Organized Classification of Sports Wearables
### Performance Wearables in Sports Disciplines  
Running: Performance wearables can track running activity and offer analysis on the athlete's performance. They map the route taken and track the pace achieved. Once a route is completed, the data are uploaded onto the app and website with analysis of the activity and any known limitations, such as calories burned, average speed, maximum speed, speed over certain distances, and heart rate.  
\begin{table}
\begin{tabular}{l l} \hline \hline
**Existing Product** & **Application** \\ \hline Oura Ring [70] & \(\bullet\) & Tracks heart rate and can estimate sleep and activity levels. \\  & \(\bullet\) & Is used to acquire nocturnal heart rate (HR) and HR variability (HRV). \\ \hline Garmin Forerunner 945 [71] & \(\bullet\) & Tracks heart rate with good accuracy. \\  & \(\bullet\) & Can be used for prescribing exercise intensity. \\ \hline Samsung Galaxy Watch [72] & \(\bullet\) & Tracks heart rate and other biometric data with built-in GPS. \\  & \(\bullet\) & Also provides HRV during sleep times. \\ \hline \hline \end{tabular}
\end{table}
Table 2: _Cont._  
\begin{table}
\begin{tabular}{l l} \hline \hline
**Existing Product** & **Application** \\ \hline Stryd [78] & \(\bullet\) & Tracks power output, ground contact time, and stride length with foot pod. \\  & \(\bullet\) & Data can be used to improve running economy and efficiency. \\ \hline \hline \multirow{3}{*}{Catapult OptimEye [79]} & \(\bullet\) & Tracks movement data, such as speed, acceleration, and distance. \\  & \(\bullet\) & Data can be used to improve technique and performance in sports such as football, \\  & \(\bullet\) & rugby, and cricket. \\ \hline \hline \multirow{3}{*}{Wattbike Atom [80]} & \(\bullet\) & Tracks power output, cadence, and heart rate with smart bike. \\  & \(\bullet\) & Data can be used to improve cycling performance and efficiency. \\ \hline \hline \multirow{3}{*}{Polar OH1 [81]} & \(\bullet\) & Tracks heart rate and heart rate variability with chest strap. \\  & \(\bullet\) & Data can be used to assess recovery and stress levels. \\ \hline \multirow{3}{*}{Run Scribe [82]} & \(\bullet\) & Tracks distance, pace, step length and frequency, ground contact time, VGRF, and \\  & \(\bullet\) & foot angle and its derivates [83]. \\ \cline{1-1}  & \(\bullet\) & Data can be used to improve running economy, technique, and efficiency. \\ \hline \hline \end{tabular}
\end{table}
Table 3: Performance Wearables examples.  
Cycling: Performance wearables can track heart rate, cadence, and power output, which can help cyclists to train more effectively and stay motivated. They can also provide turn-by-turn directions and help cyclists to stay safe on the road.  
Swimming: Performance wearables can track heart rate, stroke count, and distance per stroke, which can help swimmers to improve their efficiency and swim faster. They can also help swimmers maintain pace and direction during open water swimming.  
Golf: Performance wearables can track heart rate, swing speed, and clubhead speed, which can help golfers to improve their accuracy and scoring. They can also provide real-time feedback on shots and help golfers to learn from their mistakes.  
Basketball: Performance wearables can track heart rate, distance traveled, and shot accuracy, which can help basketball players to improve their conditioning, efficiency, and shooting. They can also provide real-time feedback on plays and help players to learn from their mistakes.  
Soccer: Performance wearables can track heart rate, distance traveled, metabolic power, acceleration, and sprints, which can help soccer players to improve their conditioning, efficiency, and speed. They can also provide real-time feedback on plays and help players to learn from their mistakes.