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InBody Tracker Results

How does it work?

The InBody Tracker uses bioelectrical impedance analysis (BIA), a non-invasive electrical pulse, to estimate body fat and muscle mass. The pulse travels easily through water, blood and muscle, but less so through fat and bone. So the amount of fat and muscle can be accurately estimated based on how this pulse travels through your body.

Your InBody Tracker results can indicate the changes you need to make to your body composition and which exercises will have what level of effect in terms of burning calories for your body type. Ongoing use can report the gains achieved through exercise and consumption of a balanced diet.

Why it’s important to understand your body composition

It’s important to monitor your body composition ratio. In a healthy state, the human body keeps a well-balanced ratio, while in an unhealthy state, an instable ratio may result in obesity, edema, malnutrition or osteoporosis

Why shouldn’t I base my health status off my weight alone?

The ratio between muscle mass and body fat and the distribution of body fat is more meaningful and important than body weight. Muscle is denser than fat, that is why a slim person with more muscle can weigh more than a person with more fat.

Why do I need to know how much muscle I have?

There are many benefits to having a proper amount of muscle mass. You can see how effective your exercise was by checking the changes of your muscle. Not just the amount of muscle, checking muscle distribution helps you prevent muscle imbalance. If the amount of mineral and muscle mass in the lower body is insufficient, this may overwork the joints and the risk of arthritis will increase.

Understanding your results

1. Body Composition Analysis

This is your body’s composition of water, protein, minerals and fat by weight, compared with the normal amount for your age, weight and gender.

Your water composition is generally about 60% of your total bodyweight.

This consists mostly of nitrogen and is the main component of Soft Lean Mass. A lack of protein implies a lack of muscle and / or poor nutrition.

Mineral mass is closely related to the level of exercise you do. If you have more lean mass, the weight of bones strengthen which in turn, increases the bone mineral. Low bone mineral is associated with Osteoporosis

Body Fat Mass:
Body Fat Mass = Body Weight – Fat Free Mass(FFM).
Body Fat Mass can be stored under the skin, as well as in the abdomen. When a person’s body fat mass is higher than the standard range, they are clinically obese.

2. Muscle to Fat Analysis

Your weight consists of your body water, protein, mineral and body fat mass.

Skeletal Muscle Mass (kg):
100% normal Skeletal Muscle Mass refers to the ideal quantity of Skeletal Muscle Mass for a person’s standard weight. There are three types of muscle - cardiac muscle, visceral muscle and skeletal muscle. However, it is the quantity of skeletal muscle that is the most changed through exercise. As such, the InBody displays Skeletal Muscle Mass separately from Fat Free Mass.

Body Fat Mass:
Body Fat Mass = Body Weight - Fat Free Mass(FFM). Body Fat Mass is stored under the skin, as well as between the abdomen and muscles. When a person’s body fat mass is outside of the standard range, he/she is diagnosed as being obese.

How to Interpret your Muscle to Fat Analysis:
Interpreting these results can be quite difficult as they are based on individual comparitive scores. If you’d like further analysis of your results – pop into Virgin Active and one of our Fitness Professionals would be glad to give you a personal assessment.

3. Obesity Diagnosis

This uses your BMI (Body Mass Index) and PBF (Percentage Body Fat) to determine your hidden obesity levels.

BMI (Body Mass Index):
BMI is a generally known index to see the superficial obesity. The formula is BMI= Weight (kg)/Height2 (m2).

BMI Classification:
Less than 18.5 = Underweight
18.5 - 24.9 = Normal
25 - 29.9 = Overweight
30 - 34.9 = 1st level obesity
35 - 39.9 = 2nd level obesity
Over 40 = 3rd level obesity

Percentage Body Fat (%):
Percentage Body Fat indicates the percentage of body fat to body weight. Percentage Body Fat (%) = Body Fat Mass(??) / Body Weight(??) × 100. The standard range of Percentage Body Fat for males is 10-20%, and 18-28% for females.

Waist-Hip Ratio:
Waist-Hip ratio (WHR) is one of the well known values to evaluate abdominal obesity, determined by dividing the waist circumference at the line of the navel by the maximum hip circumference. It is a useful indicator for looking at the distribution of body fat. InBody uses its impedance index to provide a scientific estimation of the examinee’s WHR.

Males and Females found to have 0.95 and 0.90 respectively in WHR are considered to suffer from abdominal obesity. Adults who have abdominal obesity tend to have excessive visceral fat (increased fat stored around the abdominal organs internally ) and this has been linked with an increased risk of developing Cardiovascular disease, High Blood Pressure and Diabetes in later life. This storage of visceral fat can be reversed by exercise and the levels reduced.

4. Nutritional Evaluation, Weight Management, Obesity Diagnosis

These evaluations clearly categorize the results onto health check points. By evaluation check box, you can see your health status at a glance. These simply highlight the results from the left hand side of the sheet.

5. Weight Control

The weight control set by the InBody considers the height, muscle mass (soft lean mass) and body fat mass. The reality is that two people of the same height and weight who have different body compositions will have different target weights. InBody suggests change to overall weight, change to fat mass and to overall muscle mass based on your results.

6. Segmental Lean

The picture icons show how much muscle is in each segment of the body and then assesses whether these areas are normal, under or over in terms of muscle mass.

7. Segmental Fat

The picture icons show how much fat is in each segment of the body and then assesses whether these areas are normal, under or over in terms of fat mass.

Together the Segmental Lean and Fat estimate how your muscle and fat is distributed around your body. As with muscle, many factors affect your fat distribution, and we all carry fat in different ways. While we know that spot-reducing (e.g. doing sets of crunches to burn stomach fat) doesn’t work, it’s still interesting to see where you carry the majority of your fat. Carry too much fat around your waistline for instance, can increase your risk of diseases such as diabetes. We all need to keep an eye on this, regardless of shape.

8. Exercise Planner

Based on your weight it shows the effect of 30 minutes of different types of exercise and allows you to make a plan for estimated weight loss by calculating energy expenditure. The table below shows the estimated calorie expenditure for a number of our Virgin Active classes (based on real results from class participation).


9. Fitness Score

Everybody starts off at 80; you then lose points for too much fat or too little muscle, and gain points for more muscle. As your body composition changes with exercise, the fitness score should increase.

70 or less = Lacking muscle or overweight. Needs exercise and diet control.
70-80 = An average person off the street , reasonably healthy
80-85 = Those who actively look after their diet and exercise
85+ = Usually very fit or carrying a lot of muscle

10. Basal Metabolic Rate

The Basal Metabolic Rate (BMR) is the minimum amount of energy required to sustain vital functions whilst at rest. InBody uses a formula based on fat free mass rather than just height and weight. This is more accurate and reflects the effect of gaining muscle mass and the resultant increase in BMR when people take up more exercise.

11. Impedance

InBody Tracker uses BIA which is a technique that measures body impedance, sending a low, safe electrical current through the body. You can check the accuracy of InBody Tracker as it shows the segmental impedance values at various frequencies.

To find out more about your results or how Virgin Active can help you improve them, why not pop by for a visit

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