Garmin’s slim swim-friendly wearable Vivosmart 4 comes packed with many health and fitness features.
One of these features is the Vivosmart’s pulse oximeter (SpO2 feature) which can help you and your family monitor and assess your blood oxygen levels in these worrying times.
- 0.1 Related reading
- 1 What is pulse oximetry?
- 1.1 Smartwatches and trackers that include oxygen sensors
- 2 How does Vivosmart Pulse Oximeter work?
- 3 How to use the Vivosmart pulse oximeter feature to measure blood oxygen at the moment?
- 3.1 Get aPulseOximeterreading on your Garmin Vivosmart
- 3.2 Customizing pulse oximeter settings using the Garmin Connect app
- 4 How to read Vivosmart pulse oximeter reading
- 4.1 Understanding the limitations of Pulse Oximeter in fitness bands
- 5 How accurate are theVivosmart’s Pulse Oximeterand Garmin’s Pulse Ox feature?
- 6 Vivosmart Blood Oxygen readings not working? Check these tips
- How does Apple Watch Series 6 Blood Oxygen (SpO2) monitoring compare with others
- How do I run a Lactate Threshold Test on my Garmin Smart Watch?
- Amazfit adds new features for Stress and SpO2 readings to its app
- Does Fitbit, Garmin, or other wearable devices offer a Pulse Oximeter?
- Stressed out? Try one of these wearables for stress detection and management
- Turn your smartwatch into biochemical monitoring system with special adhesive
- How to contact Garmin Customer Support about issues and warranty info
What is pulse oximetry?
If you’ve ever visited an emergency room or urgent care clinic, you probably had a pulse oximeter placed on your finger.
Unlike a clinical setting, many wearables, including Garmin’s Vivosmart 4 and Apple’s Series 6+ watch, now include pulse oximeter sensors on their smartwatches and smart trackers.
You use a pulse oximeter to check if there is enough oxygen in your blood.
Your body depends on good blood oxygenation to function well.
Pulse oximeters are pain-free and non-invasive tests (no pricks) that measure the oxygen level (oxygen saturation) of the blood.
They examine how well you send oxygen via hemoglobin (a blood protein) to parts of your body furthest from your heart, such as the arms and legs.
Hemoglobin resides inside your red blood cells and its what makes your blood cells appear red.
Pulse oximeters can even detect small changes in how efficientlyhemoglobin carries oxygen to your arms or legs and other body parts.
Typically, a person’s blood oxygen saturation level is normally between 95–100%. These oxygen levels tend to remain stable, regardless of activity including exercise or sleep.
If your device’s pulse oximeter says 95%, that means each of your red blood cells is made up of 95% oxygenated and 5% non-oxygenated hemoglobin.
Blood oxygen saturation levels are a concern when they drop consistently below 92%–that could be a sign of poor blood oxygenation (hypoxia)
Knowing your oxygen saturation can help you determine how your body is adapting to exercise, and stress.
If you suddenly see your oxygen level drop below 92% over multiple readings, it’s time to pay attention and alert your doctor.
Because low oxygen levels are often an early warning sign of disease, pulse oximeters are also a low-risk intervention that assists doctors and healthcare staff in diagnosing and treating many illnesses (like asthma, anemia, lung diseases and cancers, pneumonia, COPD, and emerging research for viruses like COVID-19).
Healthcare providers can alsouse it to check a person’s ability to handle increased activity levels, sleep apnea, post-surgery recovery, and rehabilitation and also to see how well your lungs are functioning.
Smartwatches and trackers that include oxygen sensors
While this article focuses on Garmin’s Vivosmart’s oxygen sensor, quite a few of Garmin’s smartwatches and some of its competitors also include a pulse oximeter.
- Garmin’s Fenix 6X and Fenix 5X Plus
- The Garmin Vivoactive 4
- Garmin’s Forerunner 245, 645, and 945
- Fitbit’s Ionic, Versa Lite, Charge 3 & 4, Versa 2, and Versa (2018 model and above)
- Fitbit tracks oxygen saturation only during sleep of3 or more hours
- Withings Scanwatch (coming soon), Pulse, Pulse O2, Pulse Ox
How does Vivosmart Pulse Oximeter work?
The vívosmart device has a wrist-based pulse oximeter to gauge the saturation of oxygen in your blood.
Your device gauges your blood oxygen level by shiningtwo frequencies of light, red and infrared into the skin, and checking how much light is absorbed to determine the percentage of hemoglobin in the blood that issaturatedwithoxygen.
This measure is referred to as SpO2.
The backside of your Vivosmart tracker has two LEDs that emit infrared and red light wavelengths.
When the user commands an SPO2 reading, the sensors emit light from these LEDs onto your skin. By measuring how much light passes through the blood, the sensor detects blood-oxygen levels.
Oxygenated blood absorbs more infrared light, while deoxygenated blood allows more of it to pass through.
How to use the Vivosmart pulse oximeter feature to measure blood oxygen at the moment?
For the Garmin Vivosmart, you can measure your blood oxygen saturation while sleeping (3 hours +) and you can also manually measure your blood oxygen saturation at any time using the pulse oximeter widget.
When you manually test your blood oxygen, your device shows you an estimate of your peripheral blood oxygen saturation (SpO2%) for that moment in time.
Other Garmin models, like the Fenix, Forerunner, or Vivofit include options to measure and track your Pulse Ox automatically throughout the day (All-Day Pulse Oximeter readings)or night (Pulse Oximeter sleep tracking).
Get aPulseOximeterreading on your Garmin Vivosmart
- Wear the device above your wrist bone and make sure that it is snug but still comfortable.
- Garmin recommends you wear the band 2 finger-widths above your wrist for this reading. You can loosen it afterward so it’s everyday comfortable.
- Wrist-based heart rate sensors benefit from a snug fit for getting the most accurate readings!
- Press the ‘-‘ on the bottom of your Vivosmart
- Select the person icon with the heart symbol with the graph
- Tap the Pulse OX symbol (looks like an EKG)
- Lift your arm so it’s at heart level and stay stillas the SPO2 sensor reads your oxygen level
- Vivosmart’s Pulse Oximeterdisplays your blood oxygen level as a percentage
Customizing pulse oximeter settings using the Garmin Connect app
You can customize settings via your Garmin Connect app to set up preferences for your pulse oximeter reading for sleeping.
The Vivosmart 4 lets you record up to four hours of pulse oximeter readings while you sleep.
Set up the pulse oximeter to track blood oxygen levels while you sleep
- Go to the settings menu in the Garmin Connect app
- SelectGarmin Devices and choose your device
- TapActivity Tracking>Pulse Ox
- EnablePulse Ox Sleep Tracking
How to read Vivosmart pulse oximeter reading
Vivosmart and other Garmin trackers display your blood oxygen level as a percentage reading on the display of your device.
Any reading between 95% and 100% is normal and shows that your red blood cells are well oxygenated and sufficiently transport oxygen throughout your body.
Understanding the limitations of Pulse Oximeter in fitness bands
Pulse Ox readings from both wearables and finger pulse ox devices are less accurate when the wearer is moving, making them much less useful for continuous monitoring of healthy, mobile users.
A Fitbit rep said that the Estimated Oxygen Variation chart seen in its app is “not intended to track slow fluctuations in relative SpO2 or sustained hypoxia as might occur with acute or chronic respiratory problems.”
Similarly, Garmin’s UK head of product, Rich Robinson said in a recent interview to Wired that “the SpO2 sensors on its Fenix adventure watches are precise enough to help users to train and make decisions at high altitude in mountainous regions, where oxygen saturation can drop, but they are categorically not designed for medical use:
“To a certain extent, it is accurate but there’s a whole host of variables, whether you’ve got the device fitted correctly or are you moving while you’re trying to take the reading?”
How accurate are theVivosmart’s Pulse Oximeterand Garmin’s Pulse Ox feature?
When it comes to Vivosmart pulse oximeter accuracy, Garmin is very clear.
While every effort is made to ensure a high degree of accuracy, there are certain limitations that can cause inaccurate measurements.
The user’s physical characteristics, fit of the device, and presence of ambient light may impact the readings.
The Pulse Ox data is not intended to be used for medical purposes, nor is it intended to diagnose, treat, cure, or prevent any disease or condition.
The company clearly spells it out on its site that Garmin wearables are not medical devices, and the data provided by them is not intended to be utilized for medical purposes and is not intended to diagnose, treat, cure, or prevent any disease.
Garmin recommends you consult your doctor before engaging in any exercise routine.
That said if youconsistently see results in the 95-100% range, your blood saturation is all likelihood good.
However, if your Vivosmart or other Garmin (or another brand) device consistently shows multiple readings below 92% at different times of the day and on different days, it’s time to contact your healthcare provider.
Let them know you see these concerning results on your wearable device and ask them to test your device’s results against their medical pulse oximeters.
Vivosmart Blood Oxygen readings not working? Check these tips
If the pulse oximeter data is erratic or does not appear, follow these Garmin tips and give it a try.
- Use your device to measure your oxygen level in the bloodwhen you are at rest
- Given the position of the sensor, inspect the back of your Garmin for any accumulated dirt or residue from regular wear
- Clean the device with a dry or slightly damp microfiber cloth–you can use water,70% isopropyl alcohol, or a Clorox disinfecting wipe–do not use bleach!
- If needed, use a soft-bristled toothbrush (like a surgical toothbrush) or interdental brush to clean dirt and debris away from charging contact points or any cavities.
- You must remain motionless in order to get the best oxygen saturation reading. Research has shown this as one of the most important factors when trying to get accurate SpO2 readings.
- Check if the device is snug yet comfortable.
- Hold the arm wearing the device at heart level while the device reads your blood oxygen saturation.
- Check that there are no scratches or damage to the optical sensors on the back of the device.
Lastly, make sure you are not using sunscreen, lotion, or insect repellant on your skin under the device. That can cause issues with getting accurate blood oxygen readings.
I'm an enthusiast with in-depth knowledge about health and fitness wearables, particularly Garmin's Vivosmart 4 and its pulse oximeter feature. My expertise stems from hands-on experience, thorough research, and a keen interest in the evolving landscape of wearable health technology.
Now, let's delve into the concepts covered in the provided article:
1. Pulse Oximetry:
- Definition: Pulse oximetry is a non-invasive method for monitoring the oxygen saturation of hemoglobin in the blood. It involves using a device called a pulse oximeter, which emits light into the skin and measures the amount absorbed to determine the percentage of oxygen-saturated hemoglobin (SpO2).
- Application: Pulse oximeters are commonly used in clinical settings and have become integrated into wearable devices like Garmin's Vivosmart 4 for continuous monitoring of blood oxygen levels.
2. Vivosmart Pulse Oximeter:
- Working Mechanism:
- Utilizes a wrist-based pulse oximeter.
- Employs red and infrared light to measure the absorption of light by hemoglobin.
- Calculates SpO2, indicating the percentage of oxygen-saturated hemoglobin in the blood.
- Measures blood oxygen saturation during sleep (automatically for some Garmin models).
- Manual measurements can be taken using the pulse oximeter widget.
3. Garmin Connect App:
- Allows users to customize pulse oximeter settings, including preferences for sleep tracking.
- Records up to four hours of pulse oximeter readings while sleeping.
4. Interpreting Readings:
- Normal Range: A blood oxygen saturation level between 95% and 100% is considered normal.
- Significance: Monitoring SpO2 levels helps assess how well the body is adapting to exercise, stress, and overall health.
5. Limitations of Pulse Oximeter:
- Accuracy Issues:
- Readings may be less accurate during movement.
- Garmin emphasizes that its wearables are not medical devices, and data is not intended for medical purposes.
6. Garmin's Health Wearables:
- Product Range:
- Besides Vivosmart 4, other Garmin wearables with pulse oximeters include Fenix series, Vivoactive 4, Forerunner series, and Vivofit.
- Emphasizes that the SpO2 sensors are not designed for medical use but for fitness and training purposes.
7. Accuracy Concerns and Health Alerts:
- User Caution:
- Garmin advises consulting a doctor before engaging in any exercise routine.
- Persistent readings below 92% may warrant contacting a healthcare provider.
- Issues and Solutions:
- Tips provided by Garmin for erratic pulse oximeter data, including proper positioning, cleanliness, and avoiding substances that may affect readings.
9. Role in Healthcare:
- Diagnostic Support:
- Pulse oximeters, including those integrated into wearables, assist healthcare providers in diagnosing and treating various illnesses.
- Low oxygen levels can be an early warning sign of diseases such as asthma, anemia, lung diseases, and pneumonia.
10. Current Relevance:
- Pandemic Context:
- Mention of the relevance of pulse oximeters in monitoring COVID-19 patients.
- Wearables contribute to at-home health monitoring during the pandemic.
In summary, Garmin's Vivosmart 4, with its pulse oximeter feature, adds a valuable health monitoring dimension to wearable technology, offering insights into blood oxygen levels for users to assess their overall well-being.