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Table 3 Stepwise multiple linear regression analysis predicting ACSA of quadriceps femoris

From: Anatomical cross-sectional area of the quadriceps femoris and sit-to-stand test score in middle-aged and elderly population: development of a predictive equation

Independent variables

Multiple regression equation

R

R 2

P

Step 1

  X 1: STS power with kept upright

ACSA = 13.41 + 0.14X 1

0.67

0.44

<0.001

Step 2

  X 1: STS power with kept upright

ACSA = 25.86 + 0.10X 1 − 9.68X 2

0.76

0.59

<0.001

  X 2: sex (males, 0; females, 1)

    

Step 3

    

  X 1: STS power with kept upright

ACSA = 54.55 + 0.07X 1 − 11.66X 2 − 0.343X 3

0.80

0.64

<0.001

  X 2: sex

    

  X 3: age

    
  1. ACSA anatomical cross-sectional area, STS sit-to-stand
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Journal of Physiological Anthropology

ISSN: 1880-6805

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