Multi Stage Pacer Test vs 3E Smartphone Substudy

The beep test, or 20-m shuttle run test, is a progressive aerobic cardiovascular endurance test employed by many international sporting teams. This app will lead you through a series of stages that have different tasks, used to estimate your VO2 max (maximum oxygen uptake)! APP FEATURES Heart Monitor: Monitoring devices are supported through Bluetooth LE (Low Energy). Virtual Coach: Speech Synthesis will lead you at Test Start and a Whistle will signal each lap and level changes; Progress Tracking: each session is recorded so you can review your best performances; MULTI STAGE FITNESS TEST RULES The pacer test involves running continuously between two points that are 20 meters apart from side to side. These runs are synchronised with the app, which plays beeps (whistles) at set intervals. As the test proceeds, the interval between each successive beep decreases, forcing the athlete to increase their speed over the course of the test, until it is impossible to keep in sync with the recording (or, on extremely rare occasions, until the athlete completes the test). It allowed to get one beep before the person makes the line, but if the person being tested does not make the next interval then the most recent level they completed is their final score. The test is typically structured into 21 'levels', each of which lasts around 62 seconds. The interval of beeps is calculated as requiring a speed at the start of 8.5 km/h, increasing by 0.5 km/h with each level thereafter. The progression from one level to the next is signaled by 2 quick beeps. The highest level attained before failing to keep up is recorded as the score for that test.

Your participation in this study is completely voluntary. If you choose to participate, you will be asked to (1) download the 3E Smartphone Substudy app and allow sharing of your smartphone data and (2) complete short, daily surveys for 9 days in a row. Surveys will be administered in the 3E Smartphone Substudy app and take ~5 minutes to complete. The surveys will include questions about your sleep, physical activity, and other health behaviors that day. The app will collect information from your smartphone’s built-in GPS, accelerometer, and gyroscope sensors to give us information on your movement (e.g., steps and distance traveled). It will also collect general screen time and app usage data (e.g., how long you use). It will NOT collect information from your text messages, phone calls, or your apps beyond which app you are using and for how long (e.g., Spotify for 50 min). If you choose to participate, we will ask you to complete this process 1-2 times per year. You will receive up to $35 for completing the 3E Smartphone Substudy.