| Although there is a well-known relationship between physical activity and well-being, particularly among women, this association is complex. There is a call for more research regarding key moderating processes that will help to explain the circumstances under which physical activity can lead to optimal well-being. The overall purpose of this dissertation was to examine the influence of situational motivation (Self-Determination Theory; Deci and Ryan, 1985) and passion (Dualistic Model of Passion; Vallerand et al., 2003) as predictors of the relationship between physical activity and indicators of well-being, namely affect and vitality, in active women with multiple life roles. The influence of perceived intensity (RPE) was also investigated. Study 1 followed a within-subject experimental design (N = 40). Article 1 revealed a significant interaction effect between RPE and introjected regulation whereby at low levels of introjection, RPE was positively associated with changes in positive affect with a running task. In Article 2, identified and introjected regulations were positively associated with pre- to post-running increases in positive affect. Moreover, participants with high introjection reported a greater increase in positive affect with a running task but also a greater decline in affect after a non-physical control task. Study 2 employed the Experience Sampling Method over a 14-day period (N = 66). Article 3 revealed a novel motivational sequence whereby introjected regulation was associated with higher RPE, intrinsic motivation (as well as RPE), was positively related to post-physical activity positive affect and the positive influence of identified regulation on affect appeared 3-hours post-activity. Lastly, Article 4 revealed that women's daily affect was related to engaging in their passionate activity (i.e., physical activity) and that higher harmonious passion and lower obsessive passion led to more stable positive affect across days. Vitality, as measured at endpoint, was negatively predicted by obsessive passion and positively by harmonious passion.;The findings are discussed in relation to theoretical tenants and previous studies. The unique results give rise to interesting avenues of future enquiry such as exploring motivational profiles. It is recommended that wellness interventions should emphasize women's internalization of physical activity in hopes of achieving balanced, sensible physical activity. |
