Garmin Forerunner 945 Owners Manual - Page 25

• Rinse the device with fresh water after each workout. The oxygen saturation percentage scale. A graph of your average oxygen saturation readings for the last 24 hours. Your most recent oxygen saturation reading. The elevation scale. A graph of your elevation readings for the last 24 hours. Getting Pulse Oximeter Readings You can manually begin a pulse oximeter reading by viewing the pulse oximeter widget. The widget displays your most recent blood oxygen saturation percentage, a graph of your hourly average readings for the last 24 hours, and a graph of your elevation for the last 24 hours. NOTE: The first time you view the pulse oximeter widget, the device must acquire satellite signals to determine your elevation. You should go outside, and wait while the device locates satellites. 1 While you are sitting or inactive, select UP or DOWN to view the pulse oximeter widget. 2 Remain stationary for up to 30 seconds. NOTE: If you are too active for the watch to determine your oxygen saturation, a message appears instead of a percentage. You can check your oxygen saturation again after several minutes of inactivity. Turning On Pulse Oximeter Sleep Tracking You can set your device to continuously measure your blood oxygen saturation while you sleep. NOTE: Unusual sleep positions can cause abnormally low sleep-time SpO2 readings. 1 From the pulse oximeter widget, hold . 2 Select Options > Sleep Pulse Ox > Sleep Time. Turning On All-Day Acclimation Mode 1 From the pulse oximeter widget, hold . 2 Select Options > All Day Mode > On. The device automatically analyzes your oxygen saturation throughout the day, when you are not moving. NOTE: Turning on all-day acclimation mode decreases battery life. Tips for Erratic Pulse Oximeter Data If the pulse oximeter data is erratic or does not appear, you can try these tips. • Remain motionless while the device reads your blood oxygen saturation. • Wear the device above your wrist bone. The device should be snug but comfortable. • Hold the arm wearing the device at heart level while the device reads your blood oxygen saturation. • Use a silicone band. • Clean and dry your arm before putting on the device. • Avoid wearing sunscreen, lotion, and insect repellent under the device. • Avoid scratching the optical sensor on the back of the device. Viewing Your Heart Rate Variability Stress Score Before you can perform the heart rate variability (HRV) stress test, you must put on a Garmin chest heart rate monitor and pair it with your device (Pairing Your Wireless Sensors, page 29). Your HRV stress score is the result of a three-minute test performed while standing still, where the Forerunner device analyzes heart rate variability to determine your overall stress. Training, sleep, nutrition, and general life stress all impact how you perform. The stress score range is 1 to 100, where 1 is a very low stress state, and 100 is a very high stress state. Knowing your stress score can help you decide if your body is ready for a tough training run or yoga. TIP: Garmin recommends that you measure your stress score before you exercise, at approximately the same time, and under the same conditions every day. You can view previous results on your Garmin Connect account. 1 Select START > DOWN > HRV Stress > START. 2 Follow the onscreen instructions. Body Battery Your device analyzes your heart rate variability, stress level, sleep quality, and activity data to determine your overall Body Battery level. Like a gas gauge on a car, it indicates your amount of available reserve energy. The Body Battery level range is from 0 to 100, where 0 to 25 is low reserve energy, 26 to 50 is medium reserve energy, 51 to 75 is high reserve energy, and 76 to 100 is very high reserve energy. You can sync your device with your Garmin Connect account to view your most up-to-date Body Battery level, long-term trends, and additional details (Tips for Improved Body Battery Data, page 20). Viewing the Body Battery Widget The Body Battery widget displays your current Body Battery level and a graph of your Body Battery level for the last several hours. 1 Select UP or DOWN to view the Body Battery widget. NOTE: You may need to add the widget to your widget loop (Customizing the Widget Loop, page 30). 2 Select START to view a combined graph of your Body Battery and stress level. Blue bars indicate periods of rest. Orange bars indicate periods of stress. Gray bars indicate times that you were too active to determine your stress level. 3 Select DOWN to see your Body Battery data since midnight. Heart Rate Features 19