Salter 9147 BK3R Stow-A-Weigh Analyser Scale - Manual (Page 3)

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how doeS thiS SAlter ScAle work?
This Salter scale uses BIA (Bio Impedance Analysis) technology which passes a tiny
electrical impulse through the body to determine fat from lean tissue, the electrical
impulse cannot be felt and is perfectly safe. Contact with the body is made via stainless
steel pads on the platform of the scale (or an almost invisible ITO coating on the surface
of the glass*).This method simultaneously calculates your personal weight, BMI, body
fat, total body water and muscle mass, giving you a more accurate reading of your
overall health and fitness. This scale stores the personal data of up to 4 users. As well
as being an analyser scale, this scale can be used as a conventional scale.
Body fAt -whAt doeS it meAn?
The human body is made up of, amongst other things, a percentage of fat. This is vital
for a healthy, functioning body - it cushions joints and protects vital organs, helps
regulate body temperature, stores vitamins and helps the body sustain itself when food
is scarce. However, too much body fat or indeed too little body fat can be damaging to
your health. It is difficult to gauge how much body fat we have in our bodies simply by
looking at ourselves in the mirror. This is why it is important to measure and monitor
your body fat percentage. Body fat percentage gives you a better measure of fitness
than weight alone – the composition of your weight loss could mean you are losing
muscle mass rather than fat - you could still have a high percentage of fat even when a
scale indicates ‘ normal weight’.
Body wAter -why meASure it?
Body water is the single most important component of body weight. It represents over
half of your total weight and almost two thirds of your lean body mass (predominantly
muscle). Water performs a number of important roles in the body:
All the cells in the body, whether in the skin, glands, muscles, brain or anywhere else,
can only function properly if they have enough water. Water also plays a vital part in
regulating the body’s temperature balance, particularly through perspiration.
The combination of your weight and fat measurement could appear to be ‘normal’ but
your body hydration level could be insufficient for healthy living.
normAl heAlthy rAnge of Body fAt percentAge
Body fat % ranges for Boys*
Age low optimal moderate high
10 ≤12.8 12.9 - 22.8 22.9 - 27.8 ≥27.9
11 ≤12.6 12.7 - 23.0 23.1 - 28.2 ≥28.3
12 ≤12.1 12.2 - 22.7 22.8 - 27.8 ≥27.9
13 ≤11.5 11.6 - 22.0 22.1 - 26.9 ≥27.0
14 ≤10.9 11.0 - 21.3 21.4 - 25.8 ≥25.9
15 ≤10.4 10.5 - 20.7 20.8 - 24.9 ≥25.0
16 ≤10.1 10.2 - 20.3 20.4 - 24.2 ≥24.3
17 ≤9.8 9.9 - 20.1 20.2 - 23.8 ≥23.9
18 ≤9.6 9.7 - 20.1 20.2 - 23.5 ≥23.6
Body fat % ranges for girls*
Age low optimal moderate high
10 ≤16.0 16.1 - 28.2 28.3 - 32.1 ≥32.2
11 ≤16.1 16.2 - 28.8 28.9 - 32.7 ≥32.8
12 ≤16.1 16.2 - 29.1 29.2 - 33.0 ≥33.1
13 ≤16.1 16.2 - 29.4 29.5 - 33.2 ≥33.3
14 ≤16.0 16.1 - 29.6 29.7 - 33.5 ≥33.6
15 ≤15.7 15.8 - 29.9 30.0 - 33.7 ≥33.8
16 ≤15.5 15.6 - 30.1 30.2 - 34.0 ≥34.1
17 ≤15.1 15.2 - 30.1 30.2 - 34.3 ≥34.4
18 ≤14.7 14.8 - 30.8 30.9 - 34.7 ≥34.8
Body fat % ranges for men**
Age low optimal moderate high
19 - 39 ≤8 8.1 - 19.9 20 - 24.9 ≥25
40 - 59 ≤11 11.1 - 21.9 22 - 27.9 ≥28
60+ ≤13 13.1 - 24.9 25 - 29.9 ≥30
Body fat % ranges for women**
Age low optimal moderate high
19 - 39 ≤21 21.1 - 32.9 33 - 38.9 ≥39
40 - 59 ≤23 23.1 - 33.9 34 - 39.9 ≥40
60+ ≤24 24.1 - 35.9 36 - 41.9 ≥42
*Source: Derived from; HD McCarthy, TJ Cole, T Fry, SA Jebb and AM Prentice: “Body fat reference curves for children”.
International Journal of Obesity (2006) 30, 598–602.
**Source: Derived from; Dympna Gallagher, Steven B Heymsfield, Moonseong Heo, Susan A Jebb, Peter R Murgatroyd,
and Yoichi Sakamoto: “Healthy percentage body fat ranges: an approach for developing guidelines based on body mass
index1–3”. Am J Clin Nutr 2000;72:694–701.
the Body fat % ranges published are for guidance only. professional medical guidance should always be
sought before embarking on diet and exercise programs.
whAt iS Bmi?
Body Mass Index or BMI is a useful tool that many health professionals use to determine
a healthy weight range for an individual. BMI is a measure that uses height and weight
to gauge total body fat. A healthy BMI for an adult falls between 18.5 and 24.9.
If an individual has a BMI equal to or greater than 25, they are considered “overweight”.
An individual with a BMI equal to or greater than 30 is considered “obese”.
Finally, an individual with a BMI equal to or greater than 40 is considered “extremely
obese”. Anyone with a BMI less than 18.5 is considered “underweight”.
Note: There are some limitations to BMI. It may overestimate BMI in people who are very
muscular because muscle weighs more than fat, and underestimate BMI in people who
have lost muscle mass, such as the elderly. Consult a doctor / GP to determine what is
most ideal for you.
whAt doeS my Bmi vAlue meAn?
Body Mass Index (BMI) is an index of weight-for-height that is commonly used to
classify underweight, overweight and obesity in adults. This scale calculates your BMI
value for you. The BMI categories shown in the chart and table below are recognised by
the WHO (World Health Organisation) and can be used to interpret your BMI value.
Your BMI category can be identified using the table below.
Bmi category Bmi value meaning health risk Based Solely on Bmi
< 18.5 Underweigh t Moderate
18.6- 24.9 Normal Low
25- 29.9 Overweight Moderate
30+ Obese High
importAnt: If the chart/table shows that you are outside of a ‘normal’ healthy weight
range, consult your doctor before taking any action. BMI classifications are for adults
(age 20+ years) only.
*Select models only.
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