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Table 2 Isotemporal Substitution Models Examining the Associations of Replacing 60 min Sedentary Behavior, LPA and MVPA on Physical Function Test (n = 141)

From: Effect of isotemporal substitution of sedentary behavior with different intensities of physical activity on the muscle function of older adults in the context of a medical center

Analysis Method

SB

LPA

MVPA

B

95%CI

p

B

95%CI

p

B

95%CI

p

Handgrip strength (kg)

         

Replace SB with

Dropped

  

1.587

(0.706, 2.468)

< 0.01*

1.113

(− 1.055, 3.282)

0.311

Replace LPA with

−1.587

(− 2.468, − 0.706)

< 0.01*

Dropped

  

−0.474

(− 2.895, 1.947)

0.699

Replace MVPA with

−1.113

(− 3.282, 1.055)

0.311

0.474

(− 1.947, 2.895)

0.699

Dropped

  

Timed up & go test (s)

         

Replace SB with

Dropped

  

-1.415

(-2.186, -0.643)

< 0.001*

-1.387

(-3.256, 0.482)

0.144

Replace LPA with

1.415

(0.643, 2.186)

< 0.001*

Dropped

  

0.028

(-2.070, 2.126)

0.979

Replace MVPA with

1.387

(-0.482, 3.256)

0.144

-0.028

(-2.126, 2.070)

0.979

Dropped

  

Gait speed (m/s)

         

Replace SB with

Dropped

  

0.042

(0.007, 0.078)

0.02*

0.105

(0.018, 0.193)

0.019*

Replace LPA with

−0.042

(− 0.078, − 0.007)

0.02*

Dropped

  

0.063

(− 0.035, 0.160)

0.204

Replace MVPA with

−0.105

(− 0.193, − 0.018)

0.019*

−0.063

(− 0.160, 0.035)

0.204

Dropped

  

a Five-time sit to stand test

         

Replace SB with

Dropped

  

−0.009

(− 0.032, 0.014)

0.435

−0.060

(− 0.117, − 0.003)

0.030*

Replace LPA with

0.009

(− 0.014, 0.032)

0.435

Dropped

  

−0.051

(− 0.114, 0.013)

0.117

Replace MVPA with

0.060

(0.003, 0.117)

0.030*

0.051

(− 0.013, 0.114)

0.117

Dropped

  
  1. Adjusted for sociodemographics (age, sex, education, living status), health status (BMI, hyperlipidemia, hypertension, diabetes, alcohol, smoking and nutritional status.) and monitor wear time; *p < 0.05
  2. a Log-transformed
  3. SB: sedentary behavior; MVPA: moderate-to-vigorous physical activity; LPA: light physical activity