Background: Despite the known risks of physical inactivity, only 50% of adults meet the recommended guidelines for physical activity (PA). Therefore, numerous interventions have been designed to increase PA across a lifespan. The purpose of this systematic review was to determine the effectiveness of interventions based on the transtheoretical model to improve PA in healthy adults. Methods: Electronic databases (CINAHL, MEDLINE, Psychology & Behavioral Sciences Collection, PsycINFO, Sociological Collection, and SPORTDiscus) were systematically searched from January 2001 to May 2020. Results: A total of 11 randomized pretest–posttest studies were included in this review. Ten studies utilized a subjective measurement of PA, and 3 studies included an objective measure. Five studies demonstrated significant improvements in PA for the transtheoretical model-based intervention groups compared with control/comparison groups; however, 6 studies demonstrated no differences between groups. Conclusion: The findings suggest that there is inconsistent evidence to support the use of interventions based on the transtheoretical model to improve PA in adult populations. Interventions were more successful when materials were delivered via in-person counseling and when study participants were in the precontemplation or contemplation phases at baseline.
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The Effectiveness of the Transtheoretical Model to Improve Physical Activity in Healthy Adults: A Systematic Review
Rachel R. Kleis, Matt C. Hoch, Rachel Hogg-Graham, and Johanna M. Hoch
Personal and Social Correlates of Self-Reported Physical Activity in Individuals With a History of Anterior Cruciate Ligament Reconstruction
Rachel R. Kleis, Deirdre Dlugonski, Matthew C. Hoch, Rachel Hogg-Graham, Stacey Slone, and Johanna M. Hoch
Physical activity is negatively impacted after anterior cruciate ligament (ACL) injury and subsequent reconstruction. Previous evidence suggests that individuals with a history of ACL reconstruction (ACLR) may experience additional barriers to sport and physical activity participation. The purpose of this study was to identify personal and social factors (physical literacy, social support, and knee function) that are predictive of self-reported physical activity in individuals with a history of ACLR. Bivariate analyses determined that elements of physical literacy and knee function were positively correlated with self-reported physical activity. The final stepwise linear regression model demonstrated that the PLAYself Physical Literacy Self-description subsection accounted for 12.2% of the variance of self-reported physical activity (p = .003). The significant effect of the PLAYself Physical Literacy Self-description remained (p = .002) even when additional demographic covariates (age, time since ACLR, and sex) were added to the model. Findings suggest that physical literacy may be a salient factor to consider for promoting physical activity after ACLR.
