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Diploma food Technology

Applied Nutrition

Arthropometic Measurements


http://www.peworld.org/fitnesstesting/body_fat_percent.htm



 

BODY COMPOSITION

Body Composition is the concept describing the relative percentage of muscle, fat and bone in our body. Body Composition analysis is a tool often used in the assessment of a person's state of fitness as it can tell us much about the physical characteristics of the person.

Skinfolds Body Fat Percentage

Equipment: Skinfold calipers.

Disadvantages: Results are subjective and rely on testers skill with calipers.

Procedure: Four site method: Biceps, Triceps, Subscapular and Suprailiac (Durnin & Womersley). Take three skinfolds at each site and find an average for the site. Write the average mm skinfold value down for each site and add them all together, to get a "sum of skinfold measurements" in mm.

Before each site is measured tense the muscle underneath and then relax the area (the arm readings are done with arms by side). Take the reading after a normal breath out.

Male testers should be aware of the ethical considerations of testing females. Do this accompanied with another female if possible.



Body Fat Percentage overall ratings table

Body Fat %

Men

Women

Male Athletes

Female Athletes

Lean

<12.0

<17

<7.0

<12.0

Average

12-20.9

17-27.0

7-14.0

12-24.9

Moderately Overweight

21-25.9

28-32.9

>15.0

>25.0

Overweight

>26

>33

N/A

N/A


Durnin & Womersley Technique

Males % Fat for age based on skinfolds

Sum of four skinfolds (mm)

Age 16-29

Age 30-49

Age 50+

20

8.1 % fat

12.1

12.5

22

9.2

13.2

13.9

24

10.2

14.2

15.1

26

11.2

15.2

16.3

28

12.1

16.1

17.4

30

12.9

16.9

18.5

35

14.7

18.7

20.8

40

16.3

20.3

22.8

45

17.7

21.8

24.7

50

19.0

23.0

26.3

55

20.2

24.2

27.8

60

21.2

25.3

29.1

65

22.2

26.3

30.4

70

23.2

27.2

31.5

75

24.0

28.0

32.6

80

24.8

28.8

33.7

85

25.6

29.6

34.6

90

26.3

30.3

35.5

95

27.0

31.0

36.5

100

27.6

31.7

37.3

110

28.8

32.9

38.8

120

29.9

34.0

40.2

130

31.0

35.0

41.5

140

31.9

36.0

42.8

150

32.8

36.8

43.9

160

33.6

37.7

45.0

170

34.4

38.5

46.0

180

35.2

39.2

47.0

190

35.9

39.9

47.9

200

36.5

40.6

48.8



 

Females % Fat for age based on skinfolds

Sum of four skinfolds (mm)

Age 16-29

Age 30-49

Age 50+

14

9.4 % fat

14.1

17.0

16

11.2

15.7

18.6

18

12.7

17.1

20.1

20

14.1

18.4

21.4

22

15.4

19.5

22.6

24

16.5

20.6

23.7

26

17.6

21.5

24.8

28

18.6

22.4

25.7

30

19.5

23.3

26.6

35

21.6

25.2

28.6

40

23.4

26.8

30.3

45

25.0

28.3

31.9

50

26.5

29.6

33.2

55

27.8

30.8

34.6

60

29.1

31.9

35.7

65

30.2

32.9

36.7

70

31.2

33.9

37.7

75

32.2

34.7

38.6

80

33.1

35.6

39.5

85

34.0

36.3

40.4

90

34.8

37.1

41.1

95

35.6

37.8

41.9

100

36.3

38.5

42.6

110

37.7

39.7

43.9

120

39.0

40.8

45.1

130

40.2

41.9

46.2

140

41.3

42.9

47.3

150

42.3

43.8

48.2

160

43.2

44.7

49.1

170

44.6

45.5

50.0

180

45.0

46.2

50.8

190

45.8

46.9

51.6

200

46.6

47.6

52.3


 

BMI

Equipment: Calculator, metre ruler, weights scales.

Target Population: Everyone who accepts being weighed!

Advantages: Very little equipment needed.

Disadvantages: Results are only rough indicators and do not take into consideration excessive muscle mass for particular sports.

Procedure: Multiply your height in metres by itself to obtain a square metres value (example: 1.6m x 1.6m = 2.56 m2). Now divide your mass in Kilograms by this figure to find your BMI score.

Measure your Height in metres

Mass (70 Kg) / Height Squared (2.56 m2) = 27.3

BMI Ratings

20-25 25-30 30-35

Ideal Weight Slightly Overweight Overweight