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Table 2 Correlation coefficients and differences of time spent in MPA, VPA and MVPA measured by accelerometer and the V-APARQ

From: Validity and reliability of a physical activity questionnaire for Vietnamese adolescents

  Accelerometer vs V-APARQ1 Accelerometer vs V-APARQ2 Differences between accelerometers and V-APARQs
  All Boys Girls All Boys Girls All Boys Girls
  (n = 146) (n = 69) (n = 77) (n = 146) (n = 69) (n = 77) Mean Mean Mean
        (95 % CI) (95 % CI) (95 % CI)
MPA 0.19* 0.24* 0.10* 0.18* 0.25* 0.12* 30.2 60.7 3.2
(22.7, 37.6) (50.1, 71.4) (0.0, 8.6)
VPA 0.50* 0.52* 0.48* 0.48* 0.52* 0.43* 4.3 0.2 7.6
(2.0, 6.6) (0.0, 4.3) (5.3, 9.8)
MVPA 0.25* 0.30* 0.18* 0.22* 0.33* 0.15* 35.9 61.3 10.1
        (23.3, 48.4) (40.9, 87.6) (5.8, 20.4)
  1. * Spearman correlation coefficients significantly different from zero (p < 0.05).
  2. ** Differences between of accelerometers and the average of V-APARQs.