InBody 580
Result Sheet Interpretation
What does your InBody Result Sheet mean?
The InBody Result Sheet displays your body composition measurements in a clear, easy-to-read way to make understanding your results simple.
Below, you will find a concise breakdown of each section of the Result Sheet. You’ll learn what each measurement means, why it matters, and how it can help you be successful in your health journey.
* The information provided is to be used for educational/informational purposes only and does not constitute medical advice. Only certified medical & health professionals may diagnose patients and provide such advice.
Chapter 1
Body Composition Analysis & Body Water
Body Composition Analysis
This section gives you a solid breakdown of your overall body composition, displaying these vital measurements in pounds (lb) or kilograms (kg):
• Total Body Water (divided into Intracellular and Extracellular Water)
• Fat Free Mass
• Dry Lean Mass
• Body Fat Mass
• Weight
Let’s take a closer look at how to interpret this section and use it to determine if you’ve gained muscle or spot fluid imbalances.
Intracellular and Extracellular Water
At the top, you have Intracellular Water (body water inside cells) and Extracellular Water (body water outside cells), which make up Total Body Water.
WHY THIS MATTERS
Both ICW and ECW are valuable in their own right, but monitoring Extracellular Water, in particular, can provide deep insights. If you notice an increase in ECW, but not ICW, this could be due to acute inflammation from overtraining.
Dry Lean Mass
This value is the weight of the protein and mineral content in your body.
WHY THIS MATTERS
Because protein makes up most of your muscle, and Dry Lean Mass excludes body water, if your Dry Lean Mass increases, then this is generally a sign that you have gained muscle mass!
Body Fat Mass
Below Dry Lean Mass is Body Fat Mass. This value reveals how much body fat, both surface level (subcutaneous) and internal (visceral), makes up your weight. Displayed in the second column from the right, Fat Free Mass (FFM) is the sum of your ICW, ECW, and Dry Lean Mass. FFM is the weight of everything in your body except fat; for this reason, it is also called Fat-Free Mass. Fat Free Mass includes muscle, water, bones, and organs.
WHY THIS MATTERS
Usually, increases in FFM reflect an increase in muscle mass (which you can also see as an increase in Dry Lean Mass) and is considered an improvement in body composition. However, people who do not maintain normal body water ratios may have increased FFM due to swelling caused by strenuous exercise or activity.
ECW/TBW Analysis
ECW/TBW is a measure of compartmental fluid distribution and shows, as a ratio, how much of your total body water is extracellular. Taking multiple InBody Tests will establish your normal fluid status and help determine any imbalances. As a general guide, check to see that your ECW/TBW is below 0.390..
WHY THIS MATTERS
This graph lets you quickly understand if you have occasional inflammation or swelling in your body resulting from strenuous exercise or activity. You can also use this to give context to FFM. High FFM and a high ECW/TBW ratio usually indicate excess body water—not just muscle.
Chapter 2
Muscle, Fat, & Obesity Risk
Muscle-Fat Analysis
This section shows how your Weight, Skeletal Muscle Mass, and Body Fat Mass compare to the healthy average range of people of the same height and sex. With Muscle-Fat Analysis, you get a better understanding of where your current body composition is so you can make any changes to get it to where you would like it to be.
Muscle-Fat Analysis is a favorite output for many people because it provides an easy-to-understand overview of body composition and helps narrow the focus of health goals.
Muscle-Fat Analysis has three components:
- WEIGHT
This is your Total Body Weight. - SKELETAL MUSCLE MASS (SMM)
This is the total weight of your Skeletal Muscle Mass (SMM). SMM is the muscle that can be grown and developed through exercise. Unlike Lean Body Mass, which includes everything except body fat, you can confidently interpret an increase in SMM as muscle gain. - BODY FAT MASS
This is how much body fat you have (both the surface level and internal fat).
The Muscle-Fat Analysis also tells you whether you have a healthy balance of SMM and Body Fat Mass in respect to your weight.
Muscle, Fat, & Obesity Risk
How to read the numbers at the top
You can compare your measurements to others of the same height and sex with the percentages above the bar graphs. While the average range varies by output, the 100% mark indicates the average for people of your height and sex, determined from an accumulation of health organizations and reputable research. So if your Weight bar is at 130%, this would mean that your weight is 30% above average.
Similarly, if your Weight bar is at 70%, this would mean that you have 30% less mass than is considered the average for your height.
Muscle, Fat, & Obesity Risk
Introduction
Refer to your Muscle-Fat Analysis and connect the endpoints of each bar (Weight to SMM to Body Fat Mass) to form a C, I, or D. Scroll down below to find out more about your body type!
“C-Shape” Body Type
If the length of the bar for your SMM is shorter than your Weight and Body Fat Mass, you have a C-shaped body type. Depending on where the measures are on the graph, this body shape can be characteristic of a person who is overweight, obese, underweight, or within the healthy range.
WHY THIS MATTERS
Muscle, Fat, & Obesity Risk
“I-Shape” Body Type
If the length of the bars for your Weight, Skeletal Muscle Mass, and Body Fat Mass roughly form a straight line, you have an I-shaped body type.
Although people with this body type are often at a healthy weight or body fat percentage, there are still areas they can focus on to maintain or improve overall health.
Remember that an I-shaped body type indicates balanced proportions, but your actual measurements relative to average ranges are what determine health outcomes. You can have proportional muscle and fat distribution while still having elevated body fat percentage or insufficient muscle mass, which may require attention regardless of the balanced appearance
WHY THIS MATTERS
Muscle, Fat, & Obesity Risk
“D-Shape” Body Type
If your SMM bar is longer than your Weight and Body Fat Mass, you have a D-shape body type. Usually, this is an athletic body type that many consider the ideal body composition shape. However, if the Weight and Body Fat Mass bars are above the recommended ranges, you should reduce your fat mass to get into the average range.
WHY THIS MATTERS
Muscle, Fat, & Obesity Risk
Obesity Analysis
This section displays your body fat percentage, or Percent Body Fat (PBF), and Body Mass Index (BMI), as well as the average ranges for these measurements.
Let’s explore how Obesity Analysis can give you a better idea of your current obesity level and your risk of related health conditions.
Body fat percentage is a division of your body fat mass by your total weight and a much better indicator of your risk of obesity than BMI.
Let’s take a closer look at why PBF is a superior metric for assessing your obesity and overall health risks.
Why you should focus on Body Fat Percentage over BMI
BMI is determined by dividing your weight by your height squared. BMI is just a single value that does not differentiate between fat or muscle mass. If you use BMI to track your fitness progress, you will never know if the changes were to fat or muscle.
BMI may also oversimplify health risks. Two people with the same height and weight would have the same BMI and health risks—even if one of them has a healthy amount of fat and high muscle mass.
On the other hand, PBF puts your weight into context by showing how much of it is fat mass. Tracking changes in your body fat percentage lets you focus on actual fat loss, not just weight loss, which can also come from muscle mass.
WHY THIS MATTERS
Muscle, Fat, & Obesity Risk
Average ranges for BMI and PBF
For BMI, 18.5 –24.99 kg/m2 is the healthy average range according to the World Health Organization. This healthy average range is presented on the Result Sheet, although the InBody device can be programmed to use a different range.
For PBF, the ranges differ for men and women, as women tend to carry more body fat than men due to their reproductive system and genetics. InBody calculates the recommended Body Fat Percentage ranges for men and women based on ACSM and ACE guidelines.
For men, the healthy range is between 10-20%.
For women, the healthy range is between 18-28%.
DIVE DEEPER
Read “Body Fat Percentage Chart: A Guide to Your Health Metrics”
Muscle, Fat, & Obesity Risk
Body Composition History
This graph displays some of the most vital measurements from your previous tests (up to 8) or overall trend. With Body Composition History, you can easily spot trends and track your progress over time.
At the bottom of the Result Sheet is the Body Composition History graph, which automatically tracks your Weight, Skeletal Muscle Mass, and Percent Body Fat measures from recent tests.
The purpose of this graph is to let you monitor positive and negative changes in body composition so you can adjust your diet and exercise plan to get the results you desire.
Let’s examine how to track positive and negative body composition changes by looking at the example above. These results represent an athletic, D-shaped individual whose goal was to gain muscle and lose body fat.
Muscle, Fat, & Obesity Risk
Tracking positive change
The Body Composition History graph makes it easy to spot when positive body composition changes occur. For instance, a gradual increase in Skeletal Muscle Mass and decrease in Body Fat Mass over the past few tests indicates that you’ve made excellent progress towards improving your overall body composition.
WHY THIS MATTERS
Muscle, Fat, & Obesity Risk
Tracking negative change
The Body Composition History graph also makes it easier to spot negative body composition changes. For example, a drop in body weight may initially appear like a positive change, but regular testing may show that this trend was due to muscle loss, not fat loss.
WHY THIS MATTERS
Chapter 3
Segmental Lean Analysis: Your Magnifying Glass
Segmental Lean Analysis
When used correctly, this is one of the most valuable sections of your InBody Result Sheet.
Segmental Lean Analysis displays your Fat Free Mass (Lean Body Mass) in all body segments in pounds and its sufficiency to support your body weight as a percentage.
Interpreting your Segmental Lean Analysis can help you:
• Spot areas for improvement
• Assess if your Fat-Free Mass is sufficiently developed in all body segments
• Identify if you have any muscle imbalances
The InBody divides your body into five body segments: your arms, legs, and trunk (torso), or the area between your neck, arms, and legs. The data for each body segment is displayed as two bars.
Segmental Lean Analysis: Your Magnifying Glass
Top Section
The top value shows how much Fat Free Mass (Lean Body Mass) you have in pounds for each body segment.
Just like with the Muscle-Fat Analysis, the top bar of the Segmental Lean Analysis compares the pounds of Fat-Free Mass against the average expected amount of Fat-Free Mass for your height. You should always work to be at 100% or higher.
Bottom Section
The bottom value compares your FFM against your measured body weight, which helps you determine if you have enough Lean Body Mass to support your body weight, where 100% is sufficient.
WHY THIS MATTERS
Segmental Lean Analysis: Your Magnifying Glass
Which populations may have unbalanced lean body mass?
While any person can theoretically have an underdeveloped body segment, some groups may be at more risk than others. Here are a few populations who may have an elevated risk of having underdeveloped body segments:
- Sedentary adults :
Sedentary adults who do not exercise commonly have below-average Segmental Lean Mass typically in their legs, which may be due to having jobs that require sitting for long periods. - “Skinny Fat” individuals (sarcopenic obese)
People who are “skinny fat” have too much body fat and not enough muscle mass for optimal health. This muscle and fat imbalance can result in healthy body weight, often leading the person to believe that they do not need to make any changes. - The elderly
It is common for the elderly to have low Lean Body Mass due to their tendency to lose muscle due to decreased activity. Their ability to stay mobile as they age is impacted, putting them at greater risk of falling and breaking bones.
Segmental Lean Analysis: Your Magnifying Glass
Muscle Imbalance
Muscle imbalances are relatively common in today’s increasingly sedentary population. People who have jobs where they sit down for most of the day tend to have a developed upper body but an underdeveloped lower body.
Another imbalance the Segmental Lean Analysis can reveal is the imbalance between your right and left arms and/or legs. This type of muscle imbalance can be due to many reasons, including a workout routine that focuses on one side of the body over the other.
DIVE DEEPER
Read “Lean Body Mass and Muscle Mass – What’s the Difference?”
WHY THIS MATTERS
Chapter 4
Customizable Outputs
On the right-hand side of your Result Sheet, you will find a series of additional outputs. The InBody Test administrator can customize these outputs based on your specific goals.
Segmental ECW/ICW Analysis
Intracellular Water (body water inside cells) and Extracellular Water (body water outside cells) make up Total Body Water. Both ICW and ECW are important to monitor, but assessing Extracellular Water, in particular, can provide deep insights.
Segmental ECW Analysis
Segmental ECW Analysis reveals whether segmental water retention is present. High segmental ECW, especially when localized (e.g., in one leg), can indicate Lymphedema, insufficiency in blood/water flow in the area, over-training or injury, or post-surgical swelling.
Localized increases in ECW may point to inflammation, trauma, or infection in that body segment.
Segmental ICW Analysis
Segmental ICW Analysis reveals segmental differences in muscle. High ICW is a marker of healthy, metabolically active muscle. Segmental ICW can help assess which regions have better muscle mass/hydration.
Comparing ICW in the right and left limbs can help detect imbalances (that may occur from favoring one side during exercise) and is helpful for personal training, physiotherapy, and injury prevention.
WHY THIS MATTERS
Visceral Fat Levels
As you may know, there are two main types of body fat: subcutaneous and visceral. The Visceral Fat Area graph allows you to determine how much harmful visceral fat you have.
The graph looks a bit complicated but is actually quite simple to read. The “100” on the left side of the graph represents 100 cm² of the visceral fat area.
The grey zone indicates age-appropriate healthy average ranges for visceral fat area. Although under 100 cm² remains ideal for all ages, this reference area provides context for normal age-related variations in visceral fat distribution.
Try to stay at or below this line to maintain a healthy fat balance.
WHY THIS MATTERS
WHY THIS MATTERS
