Table 3 Multivariable association of physical activity-related factors and time in different activity intensities*, total (N = 249).

From: Factors associated with habitual time spent in different physical activity intensities using multiday accelerometry

Potential factors

time in inactivity, min/d

time in low-intensity activity, min/d

time in moderate activity, min/d

time in VV activity, min/d

β

95% CI

p

β

95% CI

p

β

95% CI

p

β

95% CI

p

sex (men vs. women)

9.1

(−19.6, 37.9)

0.53

−19.3

(−41.8, 3.2)

0.09

9.2

(−4.2, 22.6)

0.18

1.0

(−3.3, 5.3)

0.65

age (5 years)

−6.1

(−13.0, 0.7)

0.08

7.3

(2.0, 12.7)

0.007

−0.4

(−2.8, 2.1)

0.77

−0.8

(−1.4, −0.2)

0.007

BMI, kg/m²

3.9

(0.6, 7.3)

0.02

−3.7

(−6.3, −1.2)

0.005

0.1

(−1.4, 1.5)

0.93

−0.3

(−0.6, 0.1)

0.12

WC, cma

1.6

(−0.3, 3.5)

0.10

−0.5

(−2.0, 1.0)

0.53

−1.1

(−1.9, −0.2)

0.02

−0.1

(−0.3, 0.1)

0.43

smoking status

  

0.13

  

0.0006

  

0.56

  

0.005

  never

0

(reference)

 

0

(reference)

 

0

(reference)

 

0

(reference)

 

  current

−19.8

(−47.5, 7.9)

 

29.2

(7.5, 50.9)

 

−5.5

(−16.5, 5.5)

 

−3.9

(−6.3, −1.5)

 

  former

9.0

(−12.2, 30.3)

 

−6.7

(−23.4, 10.0)

 

0.1

(−8.4, 8.6)

 

−2.4

(−4.6, −0.3)

 

alcohol consumption

  

0.24

  

0.55

  

0.10

  

0.15

  never

−44.9

(−106.3, 16.6)

 

16.4

(−33.7, 66.4)

 

26.1

(−1.2, 53.4)

 

2.4

(−1.8, 6.7)

 

  max. 1x/month

0

(reference)

 

0

(reference)

 

0

(reference)

 

0

(reference)

 

  2–4x/month

−4.0

(−32.7, 24.6)

 

9.5

(−13.2, 32.2)

 

−3.4

(−15.1, 8.3)

 

−2.1

(−5.8, 1.7)

 

  2–3x/week

−13.3

(−44.1, 17.5)

 

13.1

(−11.9, 38.0)

 

0.9

(−10.5, 12.3)

 

−0.7

(−4.7, 3.3)

 

  ≥4x/week

−32.4

(−66.3, 1.6)

 

23.2

(−3.8, 50.2)

 

10.3

(−4.0, 24.5)

 

−1.1

(−5, 2.8)

 

university entrance qualification (yes vs. no)

35.9

(13.0, 58.8)

0.002

−31.7

(−49.9, −13.4)

0.0008

−4.7

(−13.0, 3.5)

0.26

0.5

(−1.7, 2.7)

0.66

employment status

  

<0.0001

  

0.0001

  

0.44

  

0.63

  full time

0

(reference)

 

0

(reference)

 

0

(reference)

 

0

(reference)

 

  part time

−3.4

(−29.2, 22.4)

 

3.5

(−17.1, 24.1)

 

1.0

(−9.2, 11.3)

 

−1.1

(−4.0, 1.8)

 

  not employed

66.2

(34.7, 97.7)

 

−50.7

(−76.6, −24.8)

 

−14.1

(−26.3, −1.8)

 

−1.4

(−4.4, 1.6)

 

net household income per month

  

0.64

  

0.85

  

0.17

  

0.60

  <2,500 €

0

(reference)

 

0

(reference)

 

0

(reference)

 

0

(reference)

 

  2,500–4,000 €

6.8

(−16.7, 30.4)

 

−6.4

(−23.4, 10.6)

 

−0.5

(−11.0, 10.1)

 

0.1

(−2.1, 2.2)

 

  >4,000 €

11.8

(−18.8, 42.5)

 

−7.2

(−30.7, 16.3)

 

−4.8

(−16.3, 6.7)

 

0.1

(−3.2, 3.5)

 

  n. a.

−15.6

(−56.0, 24.8)

 

−7.8

(−36.9, 21.3)

 

20.4

(−1.5, 42.3)

 

3.0

(−1.5, 7.5)

 

marital status (married, no vs. yes)

21.3

(−3.7, 46.3)

0.09

−12.1

(−32.6, 8.3)

0.24

−6.3

(−15.5, 2.9)

0.18

−2.9

(−5.7, −0.2)

0.04

diabetes mellitus (yes vs. no)

−18.3

(−72.7, 36.1)

0.51

12.3

(−26.6, 51.2)

0.53

5.3

(−13.3, 23.8)

0.58

0.7

(−1.9, 3.4)

0.59

dyslipidaemia (yes vs. no)

−2.6

(−28.1, 22.9)

0.84

1.6

(−19.2, 22.4)

0.88

0.4

(−8.6, 9.4)

0.93

0.6

(−1.2, 2.3)

0.51

  1. Information was derived from self-reports during a personal interview, anthropometric measures were taken by trained personnel
  2. 95% CI, 95% confidence interval; BMI, body mass index; min/d, minutes per day; n. a., not available; vs., versus; VV, vigorous to very vigorous; WC, waist circumference.
  3. *Results were derived from four different multivariable linear regression analyses with factors potentially related to physical activity included as independent and time spent in the four different activity intensities included as single dependent variable. β-coefficients can be interpreted as absolute change in time in the different activity intensities in minutes per day, referring to a 1-unit increase for continuous variables or to the respective reference category for categorical variables. Model includes sex, age, body mass index (BMI), waist circumference (residually adjusted for BMI), smoking status, alcohol consumption, university entrance qualification, employment status, net household income, marital status, diabetes, dyslipidaemia, and study centre. Activity intensities were determined based on triaxial 24h-accelerometry vector magnitude defining 0–78 cpm as ‘inactivity’, 79–2,690 cpm as ‘low-intensity’, 2,691–6,166 cpm as ‘moderate’, and ≥6,167 cpm as VV activity27,28.
  4. aResidually adjusted for BMI.
  5. Bold: statistically significant when accounting for multiple testing (p-value < 0.01).
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