Table 4.
Multiple Regression Analysis for Weight Change from Exercise Related Behavior Change Models
| Prediction Variables | β | sr2 | p |
| SCT – Exercise | |||
| 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 |
| R2(R2 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 |
| R2(R2 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 |
| R2(R2 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 |
| R2(R2 adj.) | 6.4% (3.3%) | 0.091 |
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