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Table 3 Adjusted means of physical function measures at select percentiles of the activity pattern metric distributions

From: Associations between physical function and device-based measures of physical activity and sedentary behavior patterns in older adults: moving beyond moderate-to-vigorous intensity physical activity

Average daily:

sPPF

Adj. Mean (95% CI)

Gait speed (m/s)

Adj. Mean (95% CI)

Chair time (s)

Adj. Mean (95% CI)

Grip Strength (kg)

Adj. Mean (95% CI)

MBD, minutes

*

   

 25th %ile: 11.4 min

8.5 (8.2, 8.8)

0.89 (0.87, 0.92)

12.1 (11.5, 12.6)

24.8 (23.9, 25.6)

 50th %ile: 14.5 min

8.7 (8.4, 9.0)

0.89 (0.87, 0.91)

12.4 (12.0, 12.9)

25.5 (24.7, 26.2)

 75th %ile: 18.4 min

8.3 (8.0, 8.6)

0.88 (0.86, 0.91)

12.8 (12.3, 13.2)

25.4 (24.7, 26.1)

Sitting hours

*

  

*

 25th %ile: 8.9 h

8.5 (8.2, 8.8)

0.88 (0.86, 0.90)

12.3 (11.8, 12.8)

25.9 (25.1, 26.6)

 50th %ile: 10.2 h

8.7 (8.4, 9.0)

0.89 (0.86, 0.91)

12.4 (11.9, 12.9)

25.3 (24.5, 26.2)

 75th %ile: 11.3 h

8.4 (8.1, 8.8)

0.90 (0.87, 0.92)

12.7 (12.1, 13.3)

24.7 (24.0, 25.5)

Standing hours

   

*

 25th %ile: 3.0 h

8.4 (8.1, 8.8)

0.90 (0.87, 0.92)

12.6 (12.1, 13.2)

24.6 (23.8, 25.4)

 50th %ile: 3.9 h

8.6 (8.3, 9.0)

0.88 (0.86, 0.91)

12.5 (11.9, 13.0)

25.4 (24.6, 26.2)

 75th %ile: 4.9 h

8.5 (8.2, 8.8)

0.88 (0.86, 0.90)

12.4 (12.0, 12.9)

25.8 (25.1, 26.6)

Step count

*

*

 

*

 25th %ile: 3992 steps

8.1 (7.7, 8.6)

0.89 (0.86, 0.92)

13.1 (12.4, 13.8)

25.1 (24.2, 26.1)

 50th %ile: 6031 steps

8.7 (8.4, 9.0)

0.90 (0.88, 0.92)

12.4 (11.9, 12.8)

25.0 (24.2, 25.8)

 75th %ile: 8431 steps

8.9 (8.6, 9.1)

0.90 (0.88, 0.92)

11.8 (11.3, 12.3)

25.4 (24.6, 26.1)

SA hours

*

  

*

 25th %ile: 8.6 h

8.6 (8.3, 8.9)

0.89 (0.87, 0.92)

12.4 (11.8, 13.0)

25.3 (24.5, 26.2)

 50th %ile: 9.6 h

8.7 (8.3, 9.0)

0.90 (0.87, 0.93)

12.3 (11.8, 12.8)

25.5 (24.7, 26.4)

 75th %ile: 10.7 h

8.2 (7.8, 8.6)

0.89 (0.86, 0.92)

12.7 (12.0, 13.4)

25.2 (24.2, 26.1)

LPA hours

   

*

 25th %ile: 3.7 h

8.2 (7.8, 8.5)

0.88 (0.86, 0.91)

12.6 (12.0, 13.1)

24.7 (24.0, 25.5)

 50th %ile: 4.4 h

8.6 (8.3, 9.0)

0.89 (0.87, 0.92)

12.5 (12.0, 13.0)

25.9 (25.0, 26.8)

 75th %ile: 5.3 h

8.5 (8.2, 8.8)

0.90 (0.88, 0.92)

12.5 (11.9, 13.0)

25.4 (24.6, 26.1)

MVPA hours

*

*

 

*

 25th %ile: 0.5 h

7.8 (7.4, 8.2)

0.86 (0.83, 0.88)

13.1 (12.4, 13.7)

24.8 (23.9, 25.8)

 50th %ile: 0.9 h

8.6 (8.3, 8.9)

0.89 (0.87, 0.92)

12.6 (12.1, 13.4)

25.1 (24.3, 25.9)

 75th %ile: 1.5 h

9.0 (8.7, 9.3)

0.93 (0.91, 0.95)

11.9 (11.5, 12.4)

25.8 (25.1, 26.5)

  1. Note. sPPF Short Performance-based Physical Function score, MBD Mean sitting bout duration, SA Sedentary activity, LPA Light intensity physical activity, MVPA Moderate-to-vigorous intensity physical activity; Adj. Adjusted, CI Confidence interval
  2. *p < 0.05 for comparison of spline vs. linear model
  3. aEstimates are based on regression models that use natural cubic splines to allow for potential non-linear associations and that include adjustment for awake wear time, age, gender, race/ethnicity, education, body mass index, osteoarthritis, depressive symptoms, Charlson comorbidity index, and MVPA. All estimates incorporate weighting to account for selection into the analytic sample
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BMC Geriatrics

ISSN: 1471-2318

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