Psychosocial Outcomes Associated With Types and Intensities of Physical Activity in People With Spinal Cord Injury : The Mediating Role of Self-Efficacy and Functionality

Background: Low rates of participation and quality of life (QoL) and high rates of psychological distress are common in spinal cord injury (SCI) population. Research has supported the mediating role of self-efficacy and functionality in improving psychosocial outcomes. Furthermore, evidence supports the impact of physical activity (PA) on psychosocial variables, but little is known about the types and intensities of PA. The objective of this study was to determine whether functionality and/or general self-efficacy (GSE) mediate the relationships between the various types of PA: (1) lifestyle and (2) leisure-time physical activity (LTPA); and various intensities of PA: (1) mild, (2) moderate, and (3) heavy PA with participation, psychological distress, and perception of QoL. Methods: The Physical Activity Recall Assessment for SCI, and measures of functionality, GSE, participation, psychological distress, and perception of QoL were administered to 159 participants. Path analysis was performed using Jeffrey's Amazing Statistics Program. Results: GSE significantly mediated, and functionality partially significantly mediated, the relationship between LTPA and psychosocial outcomes. GSE and functionality did not mediate the relationship between lifestyle activity and psychosocial outcomes. Conclusions: It is recommended that people with SCI perform LTPA on a regular basis to achieve psychosocial benefits. These programs should be accompanied by strategies to improve GSE.