Reviewer's guide
Body Comp |
Body Comp
Advanced Body Composition
Wi-Fi Scale
Body Comp offers a complete body composition metrics overview, cardiovascular assessment,
and the introduction of an Electrodermal Activity Score. It comes with Health+, a service
created to work in tandem with user data and follows behavior change science principles.
• Weight – Precise up to 50g
• Full body composition: weight, muscle mass, fat mass, water mass, bone mass, BMI, and for
the first time, visceral fat* mass
• Vascular Age: monitors the age of arteries
• Pulse Wave Velocity*: measures the speed at which heartbeat generated waves move along
the arteries
• Heart Rate: Measures standing heart rate at every weigh-in
• Electrodermal Activity Score: assesses sweat gland activity
• Patented Position Control™ technology: to help position on the scale
• Automatically recognizes up to 8 users
• Up to 15 months battery life with 4 AAA (included) batteries
• Pregnancy, baby and athlete modes**
• Data is automatically synced via Wi-Fi or Bluetooth
* Pulse Wave Velocity is only available in Europe
** These features will be available soon after the launch of Body Comp.
Table of contents
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Product overview
Get started
Your health data deserves best-in-class precision
Personalize your daily health routine
How to use Body Comp?
Enhanced Body Composition
Body Composition — How does it work?
Exclusive cardiovascular insights
Pulse Wave Velocity and Vascular Age
How does it work?
Electrodermal Activity Score
EDA — How does it work?
Go a step further, with Health+
1. Product overview
Body Comp brings new health data and the highest level of precision of any previous Withings
smart scale with new sensors, exclusive algorithms, and patented electronics to give you a
deeper understanding of your body.
To unleash the power of data, this scale is compatible with Health+, an enhanced in-app
subscription service that delivers in-depth biomarker analysis and daily missions to create
healthier user habits.
Get ready for the future of body assessment.
2. Get started
You now have Body Comp, the most complete smart scale ever designed.
If you don’t have it yet, download the Withings App (available for iOS and Android), and
create your account.
Go to the “Devices” section and follow the installation instructions.
The Withings app allows you to manage key aspects of your health through detailed information,
including weight, body composition, visceral fat index, electrodermal activity score, vascular
age and standing heart rate.
The Bluetooth on your phone needs to be enabled so it can detect the device for installation.
During the installation process, you can set the scale up with a Wi-Fi network to automatically
synchronize your health data at every weigh-in.
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3. Your health data deserves best-in-class
precision
Body Comp brings new levels of precision with new sensors, exclusive algorithms, and patented
electronics (including new multi-frequency biometric impedance analysis capabilities), to
improve the accuracy of both weight and body composition.
Also, you don’t have to worry about charging it—the batteries are included and will last up to
15 months with regular use.
4. Personalize your daily health routine
Body Comp is more than a scale—it’s a connected device—and it includes additional features to
improve your experience every day.
The scale can be used by the whole family by automatically recognizing who is weighing-in. To
personalize your experience, various usage modes are available* and adapt to your everyday
needs.
Body Comp also displays additional info such as weather and air quality, to provide key
information to help you plan your day.
Athlete mode 8 users +Pregnancy & Baby mode
5. How to use Body Comp?
To learn how to use your new scale: go to the “Devices” section in the Withings app, then
select “Tutorials”.
Step on the scale with clean bare feet. Your feet should be centered on the scale.
Stand still until the measurement cycle has completed.
For maximum accuracy, try to weigh yourself at the same time each day.
If you’re using Body Comp on a carpeted surface you should use the carpet feet that are
provided in the box.
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6. Enhanced Body Composition
7. Body Composition - How does it work?
Body Comp uses multi-frequency bioimpedance analysis (BIA) to deliver even more precise
body composition metrics : weight, BMI, fat mass, muscle mass, water mass, and bone mass, so
you can gain a better understanding of your body and health.
For the first time, Visceral fat* (the fat hidden around the organs in your belly) is also measured.
Maintaining an active lifestyle, a balanced diet and healthy sleep habits can help you prevent
excess fat from building up around your abdominal organs.
*Visceral fat measurement will be available shortly after the Body Comp launch.
Body Comp embeds four electrodes attached to the surface of the glass plate and sends a
small, safe current through the lower half of your body.
Your body is composed of dierent types of tissues, which have dierent levels of electrical
conductivity. For example, lean tissue is a very good electrical conductor since it contains
water. In contrast, body fat is more resistant to a current.
By measuring the voltage drop between voltage sensing electrodes, BIA determines the
resistance level of your biological tissues to the electrical current. Based on scientifically
validated equations using several parameters (lower body impedance, weight, height, age,
gender, and athletic profile) Body Comp can assess your body fat, water percentage, bone
mass, muscle mass, and visceral fat to help you get a better picture of your overall health.
Placement of the electrodes
on Body Comp
8. Exclusive cardiovascular insights
Body Comp goes beyond weight management to bring cardiovascular risk assessment into
the home. Identify changes in your blood vessels and overall cardiovascular health thanks to
three key metrics:
Pulse Wave Velocity*
This metric measures the speed at which heartbeat-generated waves move along the arteries.
Lower Pulse Wave Velocity indicates better heart health and it can be lowered with proper diet
& exercise to improve overall cardiovascular health.
Vascular Age
Monitors the age of arteries to give a clearer picture of heart health. If your Vascular Age
is assessed as significantly greater than your chronological age, you may be more at risk of
vascular disease later in life.
Standing heart rate
Provides standing heart rate at every weigh-in so anyone can track the evolution of heart rate
over time, a good indicator of overall cardiovascular fitness.
*Pulse Wave Velocity is only available in Europe
9. Pulse Wave Velocity and Vascular Age
How does it work?
10. Electrodermal Activity Score
Pulse Wave Velocity*
Used by the medical community to help provide a cardiovascular
health assessment, it is usually restricted to a clinical setting. Body
Comp brings this unique measurement home so that everyone
can have a better picture of their health just by stepping on the
scale.
Each time your heart beats, it induces a wave along the aorta and
the arterial tree. This wave leads to blood-volume changes in the
vessels that expand and contract in response to these changes.
Pulse Wave Velocity is the speed of this wave along the arteries.
Body Comp assesses this “propagation speed” by measuring the
time dierence between blood ejection by the heart in the aorta
and the arrival of the blood flow in the feet. The time it takes for
the pressure wave to travel along the arterial tree is used by Body
Comp to compute Pulse Wave Velocity.
*Pulse Wave Velocity is only available in Europe
Body Comp is the first-ever smart scale that can measure and
assess sweat gland activity, delivered via an Electrodermal
Activity Score (EDA).
EDA is measured by stimulating the nerves that control the sweat
glands in the feet and seeing how they respond.
A high score indicates normal sweat gland activity, meaning
you’re within the normal range. You can help maintain your sweat
gland activity by taking care of your overall health via your diet
or physical activity. These metrics can be improved via our Habit
Builder modules.
Electrodermal Activity data can be easily shared with doctors so
they can help manage any health issues that may arise.
Vascular Age
As Withings has the largest Pulse Wave Velocity database in the
world, we can compare your results to other users in the same
chronological age to provide a measurement of your arteries’ age
to give you a clearer picture of your heart’s health.
11. EDA — How does it work?
Body Comp measures the sweat glands activity on the feet, an area with one of the highest
sweat gland densities, by applying a low voltage on the soles of the feet via the glass plate and
its indium tin oxide (ITO) conductive electrodes. The device records the conductance related to
the quantity of chloride ions attracted from the sweat glands and detected by the electrodes.
Body Comp measures the current for several voltage steps and deduces a conductance that
corresponds to your Electrodermal Activity Score.
The level of conductance depends on the number of chloride ions that react with the electrodes.
• In the presence of normal sweat function, the Electrodermal Activity Score is high. This
means that when nerves have a high amount of innervation (nerve stimulation), this direct
current extracts a considerable amount of chloride ions from the sweat ducts onto the surface
of your skin. Therefore, if the nerve density around the sweat glands is high, the sweat gland
activity measured by Body Comp will be high/normal.
• In the presence of low sweat gland activity, the Electrodermal Activity Score is low. This
means that when the density of the small nerves around the sweat glands is reduced, the sweat
gland stimulation decreases, leading to fewer chloride ions being drawn to the electrodes.
12. Go a step further, with Health+
To get the most powerful experience, you need motivation and the right tools to measure your
wellness journey.
That’s why we created Health+, which goes a step further in helping you improve your health
by changing your behavior.
Body Comp is compatible with Health+, and a one-year subscription is included following the
scale’s installation.
With guided action recommendations,
you are encouraged to move, step on
your scale, and/or log your mood.
This daily engagement helps to create
a powerful daily routine.
Daily engagement
Health+ is about daily engagement,
with exclusive content to create a powerful
routine. Every day you will receive
daily missions that appear at the
top of your Home tab.
Health insights
Assessing your health is good, but being
able to understand what influences it over
time is better. The app gives insights on
key metrics when they evolve so you can
know what to do with the Health Insights
displayed on the Home tab.
Weekly report
Every week, you will receive a detailed
analysis of your progress, how your actions
influence your metrics, and how you rank
among Withings’ users to provide you with
motivation to go that extra mile.
Still have questions?
Reach out to: thi.nguyen@withings.com
Habit Builders
These objectives and activities make up
the six-week modules designed to form
habits. Our Habit Builders are based on
the latest clinical evidence and have been
designed to improve activity, sleep, stress
management, and nutrition.
In the “Programs” tab, you can enrich
your daily guidance by proactively selecting
the Habit Builder that will help you best
to achieve your goal so you can customize
your daily routine one habit at a time.
With educational content,
you’ll know what to do by following ins-
tructional workout videos, exercise plans,
nutritional advice, food recipes, and exclu-
sive articles written and curated by doctors,
trainers and nutritionists who are focused
on helping people achieve their goals in the
simplest way possible.
