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Table 4 Multiple Regression Analysis for Weight Change from Exercise Related Behavior Change Models

From: Predicting short-term weight loss using four leading health behavior change theories

SCT – Exercise    
Prediction Variables β sr2 p
   Self-efficacy (ESE) -0.23 4.6% 0.013
   Perceived barriers (EPB) 0.10 0.8% 0.296
   Social support (ESS) -0.14 1.8% 0.119
  R 2 (R 2 adj. ) 11.4% (9.2%) 0.002
TTM – Exercise    
   Cognitive processes of change -0.08 0.4% 0.481
   Behavioral processes of change 0.01 0.0% 0.931
   Stages of Change 0.05 0.2% 0.619
   Self-efficacy (ESE) -0.26 5.2% 0.010
  R 2 (R 2 adj. ) 9.4% (6.3%) 0.019
TPB – Exercise    
   Intentions -0.08 0.4% 0.491
   Attitude -0.10 0.7% 0.344
   Subjective norms 0.03 0.1% 0.733
   Perceived behavioral control -0.12 1.0% 0.258
  R 2 (R 2 adj. ) 5.9% (2.8%) 0.116
SDT – Exercise    
   Interest/Enjoyment (IMI) -0.04 0.1% 0.735
   Perceived competence (IMI) 0.04 0.1% 0.759
   Importance/Effort (IMI) -0.26 4.8% 0.015
   Pressure/Tension (IMI) 0.05 0.2% 0.630
  R 2 (R 2 adj. ) 6.4% (3.3%) 0.091
  1. All variables were entered in the model; theory-related variables were entered separately in four regression models; TTM- Transtheoretical Model; SCT Social Cognitive Theory; TPB – Theory of Planned Behavior; SDT – Self Determination Theory; ESE – Exercise Self-Eficcay; EPB – Exercise Perceived Barriers; ESS – Exercise Social Support; IMI – Intrinsic Motivation Inventory; R2 adj., R square adjusted; sr2, semi-partial correlation coefficient