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Table 2 Mean accelerometer data (n = 25), based on valid days

From: Assessing pre- and postoperative activity levels with an accelerometer: a proof of concept study

 

One week before surgery (T0)

One week after surgery (T1)

Three weeks after surgery (T2)

Five weeks after surgery (T3)

P-value for time trend ‡

Mean min/day wear time per day (SD)

869 (64.18)

709 (109.71)*

815 (71.62)*

822 (71.72)*

<0.001

Mean number of valid days per week (SD) †

6.24 (1.10)

5.76 (1.16)

6.16 (1.03)

6.20 (0.96)

0.175

Mean min/day sedentary physical activity (SD)

548 (101.67)

554 (83.62)

549 (78.49)

534 (91.81)

0.674

Mean min/day light physical activity intensity (SD)

294 (85.86)

148 (76.98)*

248 (94.89)*

268 (85.70)*

<0.001

Mean min/day moderate physical activity intensity (SD)

26.08 (19.23)

6.53 (8.93)*

17.76 (15.16)*

19.47 (14.94)

<0.001

Mean min/day vigorous physical activity intensity (SD)

1.02 (2.30)

0.08 (0.28)

0.41 (1.19)

0.31 (1.31)

0.089

Mean min/day moderate and vigorous physical activity intensity (MVPA) (SD)

27.10 (19.46)

6.61* (9.08)

18.17* (15.53)

19.78 (14.94)

<0.001

Mean step count per day (SD)

7634 (3343.25)

2775* (1815.71)

5912* (3134.72)

6464* (2781.38)

<0.001

  1. * significant different compared to T0 (Bonferroni corrected p-value < 0.05)
  2. † A valid day was defined as having a minimum of 10 h per day wear time, except for the first week after surgery (T1) when a valid day was defined as 6 h of wear time per day
  3. ‡ The p-values indicate whether the values of each measuring week differ significantly from each other