Insights

insights insights

Quell measures and tracks your activity level and gait.

Activity is essential to managing your chronic pain and maintaining good health. However, chronic pain can interfere with your ability to be active and to exercise; and can even alter gait, which is the way you walk. This is why many people with chronic pain are sedentary. Insufficient activity can worsen chronic pain, which can trigger a vicious cycle of decreased activity and even worse pain. It is essential that you get as much activity and exercise as possible. It is also important that you maintain consistent and healthy gait to reduce the risk of falling and other medical issues.

Quell measures and tracks your activity level, while you wear your device, and presents this information to you via the Quell Relief smartphone app. Quell also analyzes your gait. This activity and gait data is meant to help you optimize your health by increasing your activity and identifying atypical gait. It is not intended for use in the diagnosis, mitigation, treatment, or prevention of gait disorders or other medical conditions.

The table below explains how Quell Activity Insights can help you understand your activity level and your gait. The frequently asked questions provide additional information and useful tips. If you are experiencing pain that is preventing you from being active or is affecting your gait, you may increase Quell use while going about your daily activities and when exercising. If you have concerns about your activity level or gait, you should discuss them with your doctor. Gait tracking is only available on Quell devices manufactured after December 2016 using Quell firmware version QE-2.0.

Activity Insight What Does It Mean? How Will It Help Me?
Step Count

Number of steps you have taken

This number indicates how active you have been while wearing Quell.

Time Walking

How much time you have walked

This number indicates how active you have been while wearing Quell.

Time Wearing Quell

How much time you have worn Quell

Quell tracks activity and gait while the device is on your leg.

Step Cadence

Number of steps you take per minute

Low step cadence may indicate that pain is impacting your gait.

Stride Variability

Variation in the time it takes you to stride

High variability may indicate that pain is impacting your gait.

Activity Insight Step Count What Does It Mean?

Number of steps you have taken

How Will It Help Me?

This number indicates how active you have been while wearing Quell.

Activity Insight Time Walking What Does It Mean?

How much time you have walked

How Will It Help Me?

This number indicates how active you have been while wearing Quell.

Activity Insight Time Wearing Quell What Does It Mean?

How much time you have worn Quell

How Will It Help Me?

Quell tracks activity and gait while the device is on your leg.

Activity Insight Step Cadence What Does It Mean?

Number of steps you take per minute

How Will It Help Me?

Low step cadence may indicate that pain is impacting your gait.

Activity Insight Stride Variability What Does It Mean?

Variation in the time it takes you to stride

How Will It Help Me?

High variability may indicate that pain is impacting your gait.

Frequently asked questions

Activity Insights

How does Quell monitor my activity?

The device has an accelerometer and algorithms that decode your leg movements from which the number of steps you take, the amount you walk, and characteristics of your gait are determined.

How does Quell activity monitoring compare to other wearable devices?

Most wearable devices are worn on the wrist, whereas Quell is placed on the leg. As a result, Quell acquires detailed information about your stride; from which accurate step counts and gait measurements are obtained.

How does Quell assess my activity level?

Quell measures how many steps you take and how much you walk, while wearing the device.

Can Quell track jogging and running?

Quell is optimized to track your walking.  However, it will also accurately track jogging.   It may not effectively track running depending on the speed.

How does Quell activity level tracking help with my chronic pain?

An increased level of activity is one of the best ways to reduce your pain, lessen its impact on your sleep and mood, and improve your overall health and reduce your risk of chronic diseases.  Most treatment guidelines advise those with chronic pain to remain active and discourage a sedentary lifestyle.

How much activity do I need?

Regular physical activity helps improve your overall health and fitness, and reduces your risk for many chronic diseases.  According to the Centers for Disease Control and Prevention (CDC), adults need at least 2.5 hours of moderate-intensity aerobic activity, such as brisk walking, every week.  The American Heart Association (AHA) recommends a daily target of 10,000 steps.

What is gait?

Gait is the manner in which you walk.

How does Quell assess my gait?

Quell measures two quantitative features of your gait, its cadence and variability.  The app will show your average cadence and lowest variability for every day you wear your device.

What is gait cadence?

Cadence is the number of steps you take in 1 minute.  Most people have a cadence over 80-90 steps per minute when walking.  The cadence of running may reach 180 steps per minute.  Quell is optimized for measurement of walking cadence.

What does it mean if my cadence is slow?

There are various reasons for a slow cadence, one of which is chronic pain.   If your cadence is consistently well below 80 steps per minute you should discuss with your doctor.

What is gait variability?

Gait variability can be defined in various ways.  Quell uses stride time variability, which is the fluctuation in the time between successive placements of the same foot when you walk.  Gait variability is usually expressed as a percentage.  Healthy gait is typically below about 5 – 6%.

How does chronic pain affect gait variability?

It may increase gait variability.

Are there medical conditions that impact variability?

There are a number of medical conditions that may increase gait variability.  Certain medications may also impact your gait variability.

What other factors influence gait variability?

Gait variability may increase if you walk much slower or faster than your comfortable walking speed.  For example, walking your dog or walking on a crowded side-walk will often increase your gait variability.  Walking on uneven terrain such as sand, while hiking, and stairs can also increase your gait variability.

How can I get the most accurate assessment of my true gait?

Walk for a few minutes at your comfortable walking speed on a flat surface such as a sidewalk or paved road.

What does it mean if my gait variability is high?

Healthy gait has low variability. High variability increases the risk of falling, and may indicate other medical conditions.  If you are concerned about your gait variability, you should discuss with your doctor.

He Simply Lost Hope Until Quell

For two years, my husband was in severe pain due to nerve damage from shingles. His pain was excruciating … Within one hour of starting Quell, his pain went from an 8 to a very mild 1. He is happy and slowly returning to the person his family loves!

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