Table 3 Comparison between self-reported and objective measured moderate-to-vigorous physical activity (MVPA), measured by a self-administered questionnaire (domains: active leisure time + exercise) and accelerometers (GT3X+), in 26 women pre- (T1) and nine- (T2) and 48 months (T3) post Roux-en-Y Gastric Bypass surgery (RYGB)

T1: Pre-RYGB

MVPA (minutes/day)

3.8 (−10.3–17.9)

0.970

0.21 (0.296)

T2: 9 months post-RYGB

MVPA (minutes/day)

19.8 (3.3–36.3)

0.012

0.25 (0.213)

T3: 48 months post-RYGB

MVPA (minutes/day)

19.1 (8.6–29.6)

0.003

0.42 (0.032)

Difference of differences (95% CI)^a

P-value of the differences^b

Correlation (P-value)^c

Difference T1 and T2

MVPA (minutes/day)

16.0 (−3.3–35.3)

0.016

0.37 (0.062)

Difference T1 and T3

MVPA (minutes/day)

15.3 (−1.6–32.2)

0.082

0.32 (0.107)

Difference T2 and T3

MVPA (minutes/day)

−0.7 (− 17.5–16.1)

0.713

0.41 (0.035)