Physical Activity Pattern and Pedometer Counts of Adults from Niterói, Rio de Janeiro, Brazil: The Nutrition Physical Activity and Health Survey (PNAFS)

Luiz A AnjosThomaz BC Barbosa

Mauricio TL Vasconcellos

Energy expenditure is essential for the establishment of energy

requirements (ER) and physical activity recommendations for

populations

ER = EE = BMR x PAL

2004

Dietary Reference Intake (DRI) for Energy…

RESEARCH RECOMMENDATIONS (IOM, 2002)(Chapter 5, page 225)

Methods suitable for free-living population-based studies or applications should be

developed to measure physical activity levels in order to classify children and adults into

sedentary, low active, active, and very active levels of physical activity.

To promote and maintain health, all healthy adults aged 18 to 65 yr need moderate-intensity (3-6 METs) aerobic (endurance) physical activity for a minimum of 30 min

on five days each week MSSE 2007; 39(8):1423

Purpose:

Assess the nutritional status, energy expenditure and physical activity

patterns of the population of Niterói, state of Rio de Janeiro, Brazil

The Nutrition Physical Activity and Health Survey2003

PNAFS

Niterói, Rio de Janeiro2253’S; 4306”W

Total area of 131 km2

458,274 Peoplein 2000Urban

Methods to measure EE/PA at PNAFS

1) MONICA Optional study of Physical Activity (MOSPA) questionnaire

2) 24h HR monitoring – Flex-HR

3) 24h Activity recall synchronized with the 24h HR monitoring

4) 24h Pedometer synchronized with the 24h HR monitoring

Results of PNAFS

1) MOSPA questionnaire vs 24h Activity recall - # 283

2) Energy balance (EE estimated by the Flex-HR) - # 97

The present paper presents:

3) Physical activity pattern by 24h Activity recall and 24h Pedometer monitoring

PNAFS110 Census enumeration areas (CEA)

16 Households per CEA (Total of 1760)

1 randonly selected adult in each Household

3-level sampling

24h HR of the 1760 adults,24h Pedometer in 689 subjects (56% Women),529 BMR (MOSPA), 204 callibration curve (Flex-HR)

Sample weights calibrated to represent theadult population of Niterói for each subsample

PNAFS Pedometer and 24h HR Monitoring

The subject wore a Digi-walker

SW-701 pedometer and a HR

monitor for 24 h after which a 24h

activity recall was performed

Physical pattern (24h recall):The reported activities were coded as MET levels using the Compendium of Physical Activities. Total daily activities were compiled, classified as low (< 3 METs), moderate (3-6 METs) or vigorous (≥ 6 METs) and grouped in occupational, leisure-time, transportation and domestic chores.

Active when at least 30’ of moderate or vigorous activity (≥ 3 METs).

Pedometer:Grouped as < 10000 and ≥ 10000 steps/day.

Results

2,5

35,3

11

3,5

30,8

12

0

10

20

30

40

50

60

< 18.5 18.5 -- 25 25 -- 30 ≥ 30BMI (kg/m2)

%

MenWomen

BMI distribution

0102030405060708090

100110120130140150

20-30 30-40 40-50 50-60 ≥ 60Age (years)

Tim

e at

≥ 3

MET

s (m

in)

MenWomen

Time at ≥ 3 METs (min)

0102030405060708090

100110120130140150

< 18.5 18.5 -- 25 25 -- 30 ≥ 30BMI (kg/m2)

Tim

e at

≥ 3

MET

s (m

in)

MenWomen

Time at ≥ 3 METs (min)

44

53

44

42

66

50

22

15

36

25

35

25

10

14

15

13

2

11

10

29

20

17

7

18

30

22

28

31

29

27

44

37

28

34

44

37

16

11

13

14

3

12

24

19

16

24

14

20

0 10 20 30 40 50 60 70 80 90 100

20-30

30-40

40-50

50-60

≥ 60

Todos

20-30

30-40

40-50

50-60

≥ 60

Todos

Faix

a E

tária

(ano

s)

%

Atividades Domésticas Atividades Ocupacionais Lazer Ativo + Exercício Físico Deslocamentos

Mul

here

sH

omen

s

Domestic chores

Age

grou

ps (

year

s)

Occupational ActOccupational Act Leisure-time & exercise Transportation

All

All

Wom

enM

en

Median steps per day

7000

7500

8000

8500

9000

9500

10000

10500

11000

11500

20-30 30-40 40-50 50-60 ≥ 60Age (years)

Med

ian

step

s pe

r da

y

MenWomen

Median steps per day

5000550060006500700075008000850090009500

1000010500110001150012000

< 18.5 18.5 -- 25 25 -- 30 ≥ 30BMI (kg/m2)

Med

ian

step

s pe

r da

y

MenWomen

53,966,4

53,239,5

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

24h Pedometer 24h Pedometer

< 30' < 30'

< 1

0000

< 1

0000

Men Women

Results

Conclusions:

Men are more active then women (20’ more in moderate/vigorous activities and greater number of steps).

Activity at moderate/vigorous intensities decreases after 40 years of age but increases again in men only after 60 years of age.

Conclusions:

Domestic chores in women and LTPA+transportation in men contribute approximately 50% to the 30 minutes of moderate/vigorous activities.

Aproximately 66% of men and 53% of women met the 30’ recommendation but these values were aproximately 13% lower if the step count of 10000 criterion is applied.

Thank youlanjos@ig.com.br