Reproducibility and concurrent validity of the Physical Activity Questionnaire for Adolescents (QAFA) aged 10-14 years

Prazeres, Alcides; Barbosa, Arthur Oliveira; Mendonça, Gerfeson; Farias, José Cazuza de

doi:10.5007/1980-0037.2017v19n3p270

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Revista Brasileira de Cineantropometria & Desempenho Humano

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Original Article • Rev. bras. cineantropom. desempenho hum 19 (3) • May-Jun 2017 • https://doi.org/10.5007/1980-0037.2017v19n3p270 copy

Reproducibility and concurrent validity of the Physical Activity Questionnaire for Adolescents (QAFA) aged 10-14 years

Reprodutibilidade e validade concorrente do Questionário de Atividade Física para Adolescentes (QAFA) de 10 a 14 anos de idade

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

The aim of the study was to evaluate the reproducibility and concurrent validity of the Physical Activity Questionnaire for Adolescents (QAFA). The reproducibility study (repeated evaluations with two-day interval between them) included 171 adolescents (average age 12.3 years, SD = 1.1), and the validity study (reference method: “Actgraph GT3X” accelerometer) included 341 adolescents (average age 11.9 years, SD = 1.0). All participants were students enrolled in public schools of Joao Pessoa (PB), Brazil. The QAFA reproducibility was measured using the intraclass correlation coefficient (ICC) and the Kappa PABAK Coefficient. Validity was evaluated by the Spearman correlation, Bland and Altman plot, sensitivity and specificity analysis. Reproducibility was satisfactory (ICC = 0.73; 95%CI: 0.63 - 0.79; Kappa PABAK = 0.58), and higher in physical activity frequency items (eight activities with ICC ≥ 0.70) than in duration items (seven activities with ICC ≥ 0.70). The correlation between QAFA and accelerometer was low (rho = 0.37; p < 0.001). Sensitivity was high (from 79.3% to 90.4%) and specificity was low (from 29.9% to 50.6%). The agreement between QAFA and accelerometer was satisfactory (Bland-Altman). QAFA showed satisfactory reproducibility and validity and can be used to evaluate physical activity in younger adolescents in face-to-face interviews.

Key words
Adolescence; Data accuracy; Motor activity

Variables				Validity (n = 341)
Variables		n	%	n	%
Sex
	Male	69	40.4	169	49.6
	Female	102	59.6	172	50.4
Age group (years)
	10-11	86	50.3	231	67.7
	12-14	85	49.7	110	32.3
Economic class^a
	A/B	51	31.9	116	39.2
	C/D/E	109	68.1	180	60.8
Skin color
	Non white	129	24.6	277	81.2
	White	42	75.4	64	18.8
Maternal schooling^b
	Incomplete high school	56	40.8	99	35.6
	Complete high school	30	19.2	74	26.6
	Complete high school or more	71	40.0	105	37.8
BMI classification^c
	Low weight	8	4.8	15	4.4
	Normal weight	104	62.3	210	62.3
	Overweight	36	21.5	67	19.9
	Obesity	19	11.4	45	13.4

Physical activities	Number of practitioners	Practice? (yes or no)	Frequency (days / week)		Duration (Minutes / day)
Physical activities	n (%)	Kappa PABAK	ICC	95% CI	ICC	95% CI
1. Bicycle	67 (39.8)	0.79	0.80	0.73-0.85	0.63	0.50-0.73
2. Basketball	14 (8.1)	0.85	0.55	0.39-0.67	0.45	0.25-0.59
3. Walked as exercise	35 (20.5)	0.73	0.72	0.61-0.79	0.65	0.53-0.74
4. Running	31 (18.1)	0.37	0.08	-0.25-0.33	0.37	0.14-0.53
5. Soccer	63 (36.8)	0.55	0.74	0.64-0.81	0.66	0.53-0.75
6. Beach Soccer	7 (4.1)	0.93	0.78	0.71-0.84	0.84	0.79-0.88
7. Indoor soccer	67 (39.2)	0.60	0.65	0.52-0.74	0.78	0.70-0.84
8. Handball	26 (15.2)	0.78	0.60	0.45-0.71	0.60	0.46-0.71
9. Active commuting to School	101 (59.1)	0.79	0.86	0.80-0.89	0.42	0.21-0.58
10. Active commuting to other places	61 (35.7)	0.21	0.39	0.17-0.55	0.48	0.30-0.62
11. Dance	46 (27.0)	0.61	0.78	0.71-0.84	0.81	0.74-0.86
12. Fights	20 (11.7)	0.88	0.88	0.83-0.91	0.94	0.92-0.96
13. Weight lifting	23 (13.5)	0.83	0.71	0.65-0.81	0.73	0.64-0.80
14. Swimming	15 (8.9)	0.83	0.47	0.28-0.61	0.57	0.42-0.68
15. Games	87 (50.9)	0.49	0.50	0.25-0.67	0.53	0.28-0.69
16. Beach volleyball	10 (5.9)	0.89	0.19	-0.10-0.40	0.93	0.91-0.95
17. Volleyball	53 (31.0)	0.59	0.55	0.39-0.67	0.70	0.59-0.78

Variables			Time in MVVPA (minutes / week)		Classification of the level of physical activity (Physically active vs. physically inactive)
Variables		n	ICC	95% CI	Kappa PABAK
All		171	0.73	0.63-0.79	0.58
Sex
	Male	69	0.75	0.59-0.84	0.48
	Female	102	0.71	0.57-0.80	0.63
Age group (years)
	10-11	86	0.71	0.59-0.80	0.56
	12-14	85	0.76	0.57-0.87	0.64
Economic class
	A/B	51	0.71	0.61-0.79	0.55
	C/D/E	109	0.75	0.63-0.82	0.61

Variables			MVPA time (minutes / week)	Categorical measure of physical activity (Physically active vs. physically inactive)
		n	rho	Sensitivity	95% Cl	Specificity	95% Cl
All		341	0.37*	85.4	77.8-91.1	43.0	38.0-48.1
Sex
	Male	169	0.38*	87.2	78.8-93.2	29.9	22.2-38.1
	Female	172	0.37^* * p < 0.001.	79.3	60.3-92.0	50.6	44.2-57.0
Age group (years)
	10-11	231	0.36^* * p < 0.001.	81.7	70.7-89.9	44.0	38.0-50.1
	12-14	110	0.39^* * p < 0.001.	90.4	79.0-96.8	40.7	31.6-50.4
Economic class
	A/B	116	0.37^* * p < 0.001.	84.4	67.2-94.7	44.4	35.8-53.2
	C/D/E	180	0.36^* * p < 0.001.	84.4	74.4-91.7	40.4	33.6-47.6

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[1] Alcides Prazeres Filho Universidade Federal da Paraíba; Centro de Ciência da Saúde, Departamento de Educação Física; Cidade Universitária, João Pessoa, PB, Brasil. CEP: 58051-900. E-mail: alcidespf@hotmail.com