A Self-reported questionnaire for the assessment of physical activity in youth 15-25 years: Development, reliability and construct validity

Abstract

When assessing physical activity (PA) in population studies, self-reported questionnaire is considered indispensable tool. It is a non-reactive and can be applied to a large group of people with reasonable cost. However, valid and reliable physical activity questionnaire is an outmost quest. Our study presents the development, reliability and construct validity of a self-reported questionnaire designed to assess physical activity in youth 15-25 years. The PA questionnaire has been developed to include questions about the type, frequency and duration of a variety of daily living physical activity, and exercise, fitness, sports and recreational activities. Content validity was assessed by a group of experts in the field of fitness and measurement and evaluation. At the end, 33 questions were retained. Reliability was assessed via an Intraclass correlation coefficient (ICC) based on test-retest conducted within a week period, using 39 young males 15-21 years of age. The ICC for the total energy expended in a week was 0.85 (95% CL = 0.697 -0.927). Bland and Altman test of agreement showed an acceptable level of agreement with a bias of only 0.486 kilocalorie/ kg. week between test and retest. In addition, the self-reported questionnaires were then administered to a group of active and inactive (n = 30 for each group) young males (17-25 years). Independent t- test demonstrated a significant difference (p = 0.000) between the active and inactive subjects in the frequency, and duration of moderate and vigorous sports activities, but not in daily living physical activities. Total energy expenditure (Kilocalorie/kg. week) was significantly (p = 0.000 higher in the active group compared to the inactive individuals. Therefore, it was concluded that the self-reported questionnaire presented in this study is reliable and appears to discriminate between active and inactive young males fairly well.

Full text

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
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


Test-Retest
ICC
95% CL
Bland & Altman
Bias
Construct validity








2
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
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
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

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3
A SELF-REPORTED QUESTIONNAIRE FOR ASSESSING PHYSICAL
ACTIVITY IN YOUTH 15-25 YEARS: ITS DEVELOPMENT,
RELIABILITY, AND CONSTRUCT VALIDITY.
Hazzaa M. Al-Hazzaa and Mohammed A. Al-Ahmidi
Exercise Physiology Laboratory, King Saud University, Riyadh, KSA
When assessing physical activity (PA) in population studies, self-reported
questionnaire is considered indispensable tool. It is a non-reactive and
can be applied to a large group of people with reasonable cost. However,
valid and reliable physical activity questionnaire is an outmost quest. Our
study presents the development, reliability and construct validity of a self-
reported questionnaire designed to assess physical activity in youth 15-
25 years. The PA questionnaire has been developed to include questions
about the type, frequency and duration of a variety of daily living physical
activity, and exercise, fitness, sports and recreational activities. Content
validity was assessed by a group of experts in the field of fitness and
measurement and evaluation. At the end, 33 questions were retained.
Reliability was assessed via an Intraclass correlation coefficient (ICC)
based on test-retest conducted within a week period, using 39 young
males 15-21 years of age. The ICC for the total energy expended in a
week was 0.85 (95% CL = 0.697 -0.927). Bland and Altman test of
agreement showed an acceptable level of agreement with a bias of only
0.486 kilocalorie/ kg. week between test and retest. In addition, the self-
reported questionnaires were then administered to a group of active and
inactive (n = 30 for each group) young males (17-25 years). Independent
t- test demonstrated a significant difference (p = 0.000) between the
active and inactive subjects in the frequency, and duration of moderate
and vigorous sports activities, but not in daily living physical activities.
Total energy expenditure (Kilocalorie/kg. week) was significantly (p =
0.000 higher in the active group compared to the inactive individuals.
Therefore, it was concluded that the self-reported questionnaire
presented in this study is reliable and appears to discriminate between
active and inactive young males fairly well.
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4


Caspersen, 1989




ACSM, 2000, Haskell, 1994, Leon, 1997, US Department of Health,
1996


Fletcher, et al., 1996, US Department of Health, 1996 




Caspersen, 1987



Fletcher, et al., 1996, US Department of Health, 1996, WHO, 1999





Al-Hazzaa, 2002
Al-Hazzaa, 2000, Al-
Refaee & Al-Hazzaa, 2001


Al-Hazzaa, &
Sulaiman, 1993, Al-Hazzaa, et al., 1993, Al-Hazzaa, et al., 1994








Montoye, et al., 1996, Laporte, et al., 1985
ICC
Kohl, et al.,, 2000

5



Macera & Blanton, 1999, Janz, et al., 1995
Cognition
Kriska & Caspersen, 1997



Kriska, 1997








Test-retest reliabilityConstruct validity



Kriska & Caspersen, 1997




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









Content validity


6





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



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





Kriska & Caspersen,
1997



MET

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

ACSM, 2000


Ainsworth, et al, 2000






Ainsworth, et al, 2000










7





























Ainsworth, et al., 2000




Test-retest





Patterson, 2000
Intraclass correlation coefficient
Atkinson, & Nevill, 1998, Patterson, 2000

Bland
& Altman, 1986




8
Construct validity










SPSS


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
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



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





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





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
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

10





Janz, et al, 1995, Macera & Blanton, 1999










MorrisMorris, et al., 1966



Morrow & Jackson, 1993

Kriska &
Caspersen, 1997


Kohl, et al., 2000

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

Construct validity


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

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

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

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



11


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

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

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Caspersen, et al, 2000, Telama & Yang, 2000
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Criterion validity



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
1 1415


71116

12
2 1417



3 2001


52714
4 1414





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14
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-6
-4
-2
0
2
4
6
8
10
010 20 30 40
+2 SD = 5.62

15
1

1
Bias± 2 SD




Bias = 0.486
-2 SD = 4.65

16
1





17
 






1 
34
567
2 

3 
20203045

4 

34
56789
5 
34
567
6 
20203045

7 
34
567
8 
20203045

18

9 
34
567
10
20203045

11

34
567
12
20203045

13

34
567
14
20203045

15
34
567
16
20203045

17
34
567

19
18
20203045

19

34
567
20
20203045

21

 
25

2221

23
34
567
24
20203045

25


26


27


20

28





29
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30
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31
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55
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32
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33
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