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Table 4 Multiple Linear Regression Prediction Models for ActiGraph Measured Sedentary Behavior and Physical Activity

From: Calibration of the global physical activity questionnaire to Accelerometry measured physical activity and sedentary behavior

Model Parameters Estimate Break Factor Cutoff
Sedentary Behavior
 Intercept 616.5  
 GPAQ Moderate-Intensity PA −0.03  
 GPAQ Moderate-Intensity PA Break Factor − 78.0 0.00
 GPAQ Vigorous-Intensity PA −0.45  
Moderate-Intensity PA
 Intercept 348.2  
 SQRT GPAQ Sedentary Behavior −1.87  
 GPAQ Moderate-Intensity PA2 1.65 × 10−3  
 GPAQ Vigorous-Intensity PA2 3.54 × 10− 3  
 LOG Age −65.3  
 GPAQ MVPA −0.07  
 GPAQ MVPA Break Factor 214.9 113.6
 Interaction: (GPAQ MVPA)*(MVPA Break Factor) −1.15  
Vigorous-Intensity PA
 Intercept 10.5  
 GPAQ Moderate-Intensity PA2 2.91 × 10−5  
 GPAQ Vigorous-intensity PA2 7.84 × 10−5  
 Age −0.29  
 Age Break Factor −9.77 27.6
 GPAQ MVPA −0.01  
 GPAQ MVPA Break Factor 2.14 38.6
 Interaction: (Age)*(Age Break Factor) 0.28  
 Interaction: (GPAQ MVPA)*(MVPA Break Factor) −6.55 × 10−3  
MVPA
 Intercept 540.8  
 LOG GPAQ Sedentary Behavior −12.8  
 Age −15.0  
 Age Break Factor − 356.0 29.1
 LOG GPAQ MVPA 5.78  
 Interaction: (Age)*(Age Break Factor) 13.7  
  1. GPAQ = Global Physical Activity Questionnaire; PA = physical activity; SQRT = square root; MVPA = moderate- and vigorous-intensity physical activity; * = interaction