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Table 5 Potential predictors of activity energy expenditure (kJ/kg/day), sleeping heart rate (beats/min), and grip strength (kg) based on multiple regression analysis using backward elimination on the presented variables

From: Level and intensity of objectively assessed physical activity among pregnant women from urban Ethiopia

 

Activity energy expenditure 1(kJ/kg/day) Adjusted R2=0.17 n=291

Sleeping heart rate 2(beats/min) Adjusted R2=0.03 n=298

Grip strength 2(kg) Adjusted R2=0.11 n=302

Variable

Log B (95%CI)3

P

B (95%CI)

P

B (95%CI)

P

Age (years)

−0.008 (−0.012;-0.004)

<0.001

    

Gestational age (weeks)

−0.004 (−0.007;-0.001)

0.003

0.15 (0.03;0.27)

0.02

  

Height (cm)

    

0.20 (0.11;0.28)

< 0.001

Arm fat area (cm2)

−0.004 (−0.008;-0.001)

0.005

0.16 (0.04;0.27)

0.01

  

Arm muscle area (cm2)

0.006 (0.002;0.010)

0.005

  

0.18 (0.10;0.27)

< 0.001

  1. 1Adjusted for cardiorespiratory fitness indicator (m/beat).
  2. 2Age was forced in the model.
  3. 3Data are log-transformed beta-coefficients. The percentage difference in Activity energy expenditure associated with one unit difference in continuous exposure variables is calculated as (10B – 1) x 100% (95%CI).
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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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