Christopher A. Shields

Youth and Adolescent Physical Activity Lapsers: Examining Self-efficacy as a Mediator of the Relationship between Family Social Influence and Physical Activity

The present study examined whether self-efficacy mediates the relationship between family social influence and physical activity among youth who have experienced a recent lapse in their physical activity participation. Using a prospective, longitudinal design, participants completed measures of social influence, self-regulatory efficacy and physical activity. Only those participants whose physical activity declined were retained for further analysis. Self-regulatory efficacy partially mediated the relationship between family social influence and physical activity, with self-efficacy mediating 36 percent of the total effect. The results provide support for self-regulatory efficacy as a mediator and provide preliminary insight into the potential mechanisms for preventing lapses in activity from developing into prolonged periods of inactivity within this population.

Preferring Proxy-agency Impact on Self-efficacy for Exercise

We examined: (a) the social-cognitions of those who differ in preferred level of proxy-assistance in both proxy-led and independent exercise contexts; and (b) the relationships between proxy-agency and reliance. Sixty-five fitness class participants completed measures of self-regulatory efficacy, task self-efficacy, exercise intentions, proxy-efficacy and perceived reliance. A 2 (exercise context) by 2 (preferred assistance) MANOVA revealed significant main effects for assistance and context. Also, significant assistance by context interactions was found for both efficacies. When facing exercise without a proxy, individuals preferring high proxy assistance expressed lower self-regulatory and task self-efficacy. Finally, proxy- and self-regulatory efficacy were shown to be separate predictors of reliance on a proxy. Results support Bandura’s theorizing about the proxy-led context and its influence on self-regulatory efficacy.

Effects of a Print-mediated Intervention on Physical Activity during Transition to the First Year of University

Transition to the first year of university is linked to steep declines in moderate–vigorous physical activity (MVPA). The purpose of this study was to investigate the effects of a targeted, theory-driven, print-based intervention on MVPA during transition to university. Volunteer participants from five Canadian universities (n = 255) completed measures of MVPA at the start of their first semester at university and were randomly assigned to conditions receiving a first-year-student physical activity and action-planning brochure, Canadas Physical Activity Guide (CPAG), or a no-intervention control group. Six weeks later, a follow-up measure of MVPA was obtained as well as retrospective accounts of physical activity action-planning strategies and self-efficacy for scheduling physical activity. At the follow-up, students who received the targeted first-year student physical activity brochure reported significantly higher levels of MVPA compared to controls (p < .05) and a trend towards higher MVPA compared to the CPAG group (p = .06). However, there were no differences between groups on action planning or self-efficacy. A theory-driven and targeted print media intervention can offer low-cost and broad-reaching effects that may help students stay more active or curb declining levels of MVPA that occur during transition to university.

The confidence to get going: the moderating effects of depressive symptoms on the self-efficacy-activity relationship among youth and adolescents.

The purpose of this study was to examine whether the relationship between self-efficacy and physical activity was moderated by the presence of depressive symptoms in a sample of youth and adolescents. Participants (N = 688) from grades 7–12 completed measures of self-efficacy and depressive symptoms at baseline and self-report measures of physical activity 1 month later. Hierarchical regression analyses indicated a moderating effect of depressive symptoms on the self-efficacy–physical activity relationship, with this relationship being even more pronounced among those reporting depressive symptoms. These findings have important implications for the promotion of physical activity among youth and adolescents especially those suffering from depressive symptoms.

Health care provider confidence and exercise prescription practices of Exercise is Medicine Canada workshop attendees

The Exercise is Medicine Canada (EIMC) initiative promotes physical activity counselling and exercise prescription within health care. The purpose of this study was to evaluate perceptions and practices around physical activity counselling and exercise prescription in health care professionals before and after EIMC training. Prior to and directly following EIMC workshops, 209 participants (physicians (n = 113); allied health professionals (AHPs) (n = 54), including primarily nurses (n = 36) and others; and exercise professionals (EPs) (n = 23), including kinesiologists (n = 16), physiotherapists (n = 5), and personal trainers (n = 2)) from 7 provinces completed self-reflection questionnaires. Compared with AHPs, physicians saw more patients (78% > 15 patients/day vs 93% < 15 patients/day; p < 0.001) and reported lower frequencies of exercise counselling during routine client encounters (48% vs 72% in most sessions; p < 0.001). EPs had higher confidence providing physical activity information (92 ± 11%) compared with both physicians (52 ± 25%; p < 0.001) and AHPs (56 ± 24%; p < 0.001). Physicians indicated that they experienced greater difficulty including physical activity and exercise counselling into sessions (2.74 ± 0.71, out of 5) compared with AHPs (2.17 ± 0.94; p = 0.001) and EPs (1.43 ± 0.66; p < 0.001). Physicians rated the most impactful barriers to exercise prescription as lack of patient interest (2.77 ± 0.85 out of 4), resources (2.65 ± 0.82 out of 4), and time (2.62 ± 0.71 out of 4). The majority of physicians (85%) provided a written prescription for exercise in <10% of appointments. Following the workshop, 87% of physician attendees proposed at least one change to practice; 47% intended on changing their practice by prescribing exercise routinely, and 33% planned on increasing physical activity and exercise counselling, measured through open-ended responses.

The relationship between transformational teaching and adolescent physical activity: The mediating roles of personal and relational efficacy beliefs

The purpose of this study was to examine the extent to which transformational teaching, exhibited by secondary school physical education teachers, predicts within-class physical activity and leisure-time physical activity among adolescents. The study used a prospective observational design and involved data collected from 874 Grade 10 adolescents (Mage = 15.41, (SD) = .61). Through use of structural equation modeling, the results revealed that adolescents’ perceptions of transformational teaching were positively related to within-class physical activity and leisure-time physical activity, and these effects were mediated by adolescents’ estimation of their teacher’s confidence in their abilities (i.e. relation-inferred self-efficacy) and self-efficacy beliefs.

Ties That Bond: Youth Sport as a Vehicle for Social Identity and Positive Youth Development

ABSTRACT An emerging area of research has focused on understanding how the group dynamics of a sport team influence positive youth development (PYD). The identities that youth form through their membership in sport teams (i.e., social identities) have been found to influence teammate behavior and team performance. Yet, minimal work exists on social identity and PYD in youth sport. Purpose: The purpose of this study was to investigate the relationship between social identity and PYD in sport. Method: Youth engaged in recreational sport (N = 219; Mage = 11.61 years, SD = 1.39 years) completed measures of social identity and PYD in sport. The social identity measure assessed 3 dimensions including ingroup ties (IGT; perceptions of similarity, bonding, belongingness), cognitive centrality (importance of being a team member), and ingroup affect (IGA; feelings associated with group membership). A regression analysis was performed separately for 4 PYD outcomes (personal and social skills, goal setting, initiative, negative experiences) with the 3 dimensions of social identity entered as predictors. Results: Regression analyses revealed that IGT and IGA were positively associated with personal and social skills (R2 Adj. = .29). Further, IGT predicted initiative (R2 Adj. = .16), whereas IGA was positively associated with goal setting (R2 Adj. = .17) and negatively associated with negative experiences (R2 Adj. = .08). Conclusion: The findings extend previous research highlighting the benefits of social identity on teammate behavior and team performance and demonstrate how social identity may contribute to PYD through sport.

A pilot study: Validity and reliability of the CSEP−PATH PASB-Q and a new leisure time physical activity questionnaire to assess physical activity and sedentary behaviours

The purpose of this study was to evaluate the accuracy of 2 newly developed physical activity questionnaires: the Canadian Society for Exercise Physiology (CSEP) Physical Activity and Sedentary Behaviour Questionnaire (PASB-Q) and a newly modified Leisure-Time Physical Activity Questionnaire (mLTPA-Q). These questionnaires were compared with objective measurements of physical activity and fitness (accelerometry and physiological assessments) in 35 adults, before and after a week of daily living activity. Objectively measured moderate- to vigorous-intensity aerobic physical activity (MVPA) was moderately correlated with the PASB-Qs physical activity vital sign (PAVS) (r = 0.50, p = 0.004) and the mLTPA-Q (r = 0.56, p = 0.001). Bland-Altman plots suggest minimal bias from self-reported to objective measures of MVPA. The ability of PAVS to accurately distinguish who does and does not achieve Canadian physical activity guidelines was 83% and 60%, respectively, compared with 82% and 73% of the mLTPA-Q. Self-reported sedentary time was greatly underestimated in the PASB-Q compared with the objective measure (6.4 ± 3.5 vs 12.2 ± 1.2 h/day). The results of this study suggest the PASB-Q and mLTPA-Q are valid and reliable measures of adult physical activity and provide reasonable indication of those individuals who meet physical activity guidelines. Future questionnaire development should take into account the underestimation of time spent engaging in sedentary activities.