Physical inactivity is a prevalent concern among people living with and beyond cancer (LWBC). Exercise identity, a construct thought to be important for exercise maintenance, has received limited attention in survivorship research. Within the Multi-Process Action Control (M-PAC) framework, identity and habit are key reflexive processes proposed to help sustain behavior. This study examined the applicability of the M-PAC framework in people LWBC and to identify how M-PAC, clinical, demographic, and behavioral variables are associated with exercise identity. In this cross-sectional survey, participants were recruited globally via cancer organizations, social media, and research platforms. Validated self-reported measures assessed exercise (Modified Godin Leisure-Time Exercise Questionnaire), reflective processes (affective attitude, instrumental attitude, perceived capability, and perceived opportunity), regulatory processes (regulatory behaviors including self-monitoring, goal-setting, and action planning), and reflexive processes (habit and exercise identity). Structural Equation Modeling (SEM) examined model fit and relationships; regression analyses examined factors associated with exercise identity. Participants (N = 477; Mage = 48.5 ± 15.4; 69.4

Behavioural physical activity (PA) interventions have shown success among people living with and beyond cancer (LWBC). Intervention delivery typically involves qualified exercise professionals (QEP); however, peer mentors (i.e. active people LWBC) may enhance such interventions as they can provide practical and emotional support from their lived experience. The purpose of this study was to examine the feasibility and acceptability of a peer-delivered PA behaviour change intervention for inactive people LWBC. Inactive people LWBC participated in a 6-week intervention informed by the Multi-process Action Control Framework (M-PAC). Week 1 included a QEP-hosted webinar educating participants on how to meet cancer-specific PA guidelines. In weeks 2–6, participants met weekly with a peer mentor to discuss behaviour change strategies. Feasibility and acceptability were assessed with enrollment, retention, and adherence rates, intervention satisfaction and semi-structured interviews. Secondary outcomes (i.e. PA, quality of life, M-PAC constructs) were self-reported. Participants (N = 15; Mage = 53.6 ± 11.6; 73.3

This study aimed to identify distinct profiles of quality of life (QoL) and lifestyle behaviors among cancer survivors and explore their associations with clinical and demographic factors. A cross-sectional survey was conducted globally from July to November 2020 among cancer survivors aged 18 and older. Sedentary behavior and sleep were assessed using a modified Domain-Specific Sitting Time Questionnaire, physical activity with the Godin Leisure-Time Exercise Questionnaire, and QoL via the Functional Assessment of Cancer Therapy scale. Latent profile analysis identified subgroups based on lifestyle behaviors, and multinomial logistic regression examined clinical and demographic associations. Among 477 cancer survivors (Mage = 48.5 ± 15.4 years), predominantly female (69.6

Background: Patterns in sedentary time (SED) and its impact on quality of life (QoL) in cancer survivors during the COVID-19 pandemic remains unknown. The purpose of this study was to 1) compare total and domain-specific SED before and during the pandemic; and 2) examine its association with QoL in a global sample of cancer survivors. Methods: In an online survey, cancer survivors retrospectively self-reported domain-specific SED (e.g. transportation, television) before and during the pandemic via the Domain-Specific Sitting Time Questionnaire. QoL was assessed via the Functional Assessment of Cancer Therapy (FACT)-General and FACT-Fatigue. Paired t-tests compared daily SED before and during the pandemic. Analysis of covariance compared QoL among: those who remained high (>8 h/day), remained low (<8 h/day), increased (<8 h/day to >8 h/day), or decreased (>8 h/day to <8 h/day) daily SED. Results: Among cancer survivors (N = 477, M-age=48.5 +/- 15.4), 60.8% reported that their SED remained high, 19.7% remained low, 7.5% increased SED, and 11.9% decreased SED. Computer and television screen time significantly increased (p's<.001), while SED during transportation significantly decreased (p<.001). Sub-group analyses revealed that those who reduced SED who were normal or underweight (p=.042) or were meeting physical activity guidelines (p=.031) had significantly less fatigue than those who increased or remained high in SED, respectively. Those who remained high in SED with <3 comorbidities (p's =.005) had significantly better social well-being than those who increased SED. Conclusions: As we transition to a post-pandemic era, behavioral strategies for cancer survivors should focus on reducing screen time to improve QoL and fatigue.

Exercise is beneficial for people living with and beyond cancer (LWBC); however, many people LWBC fail to meet the exercise guidelines. Having an identity related to exercise, a component of one’s self-concept, correlates with exercising more frequently in general adult populations. Understanding how exercise identity influences exercise behaviors in people LWBC is warranted due to the many barriers people LWBC face in relation to physical activity. The purpose of this study was to explore the perceived impact of an exercise identity of the exercise behaviors and motivations among people LWBC. Thirteen participants of mixed diagnoses (Mage = 60.8 ± 10.8 years) in the early survivorship period (i.e., within five years of primary treatment completion or diagnosis) participated in semi-structured interviews to identify influences of exercise identity on exercise behavior. Interviews were transcribed verbatim and analyzed using thematic analysis. Findings demonstrated that people LWBC with a strong exercise identity engage in high and varied exercise behaviors. Despite barriers such as changes in motivations and ability to engage in exercise, participants maintained exercise throughout cancer by constant adaptation of their outlook and behaviors related to exercise. These results demonstrate a maintenance of physical activity in relation to a strong exercise identity. Implications for cancer survivors: Results of this study have implications for the design and implementation of exercise behavior change programs for people LWBC as it provides insights into predictors of sustained exercise behavior during and following cancer treatment.

BACKGROUND:Physical activity (PA) and reductions in sedentary behavior (SED) may mitigate cancer-related cognitive impairment. The purpose of this study was to examine (a) the associations between changes in PA, SED, and cognitive function in cancer survivors before and during the coronavirus disease 2019 (COVID-19) pandemic; and (b) clinical subgroups that moderate this association. METHODS:A cross-sectional survey was administered online to adult cancer survivors globally between July and November of 2020. This was a secondary analysis of a cross-sectional survey examining changes in self-reported PA and quality of life in cancer survivors before and during the COVID-19 pandemic. Self-reported Questionnaires assessed moderate-to-vigorous PA (MVPA) using the modified Godin Leisure Time Exercise Questionnaire, cognitive function using the Functional Assessment of Cancer Therapy-Cognitive Function (FACT-Cog) scale, and SED using the Domain-specific Sitting Time questionnaire. Cancer survivors were classified into no change in behavior, desirable change (i.e., increase MVPA to meet PA guidelines or decrease SED by ≥60 min/day), and undesirable change (i.e., decrease MVPA to <150 min/week or increase SED by ≥60 min/day). Analysis of covariance examined differences in FACT-Cog scores across the activity change categories. Planned contrasts compared differences in FACT-Cog scores between cancer survivors with (a) no meaningful change vs. any change, and (b) a desirable change vs. an undesirable change. RESULTS:There were no significant differences in FACT-Cog scores across activity-change categories in the full sample of cancer survivors (n = 371; age = 48.6 ± 15.3 years (mean ± SD)). However, cancer survivors who were diagnosed ≥5 years ago (t(160) = -2.15, p = 0.03) or who received treatment ≥5 years ago (t(102) = -2.23, p = 0.03) and who had a desirable change in activity reported better perceived cognitive abilities than those who had an undesirable change. CONCLUSION:PA promotion efforts should consider reducing SED in addition to maintaining MVPA in long-term cancer survivors to mitigate cancer-related cognitive impairment during the COVID-19 pandemic.

The COVID-19 pandemic has imposed additional barriers to physical activity (PA) in cancer survivors. Adaptations to PA programmes are needed during the pandemic. Therefore, the purpose of this study was to evaluate (1) the PA preferences of cancer survivors prior to and during the pandemic and (2) the available resources to engage in PA during the pandemic. Using a cross-sectional study design, cancer survivors were recruited globally to participate in a self-administered survey assessing their PA preferences and available PA resources during the pandemic. Descriptive statistics were used to determine trends in PA preferences and resources. A sub-group analysis was conducted for age, gender, education, and PA levels. Cancer survivors (N = 493) were mainly women (70.4

Background: The purpose of this study was to test Multi-Process Action Control (M-PAC) processes as correlates of physical activity (PA) intention formation and translation (i.e., action control) in individuals diagnosed with cancer. Methods: This study was a cross-sectional survey, completed from July to November of 2020 during the COVID-19 pandemic. PA and M-PAC processes were self-reported using the Godin Leisure-Time Exercise Questionnaire and questionnaires for reflective (instrumental/affective attitudes, perceived opportunity/capability), regulatory (e.g., goal-setting, planning), and reflexive processes (habit, identity). Separate hierarchical multinomial logistic regression models determined correlates of intention formation and action control. Results: Participants (n = 347; Mage= 48.2 ± 15.6) were primarily diagnosed with breast cancer (27.4%) and at a localized stage (85.0%). Most participants intended to perform PA (70.9%), yet only 50.4% met guidelines. Affective judgements (p < 0.001) and perceived capability (p < 0.01) were significantly associated with intention formation. Preliminary models indicated employment, affective judgements, perceived capability, and self-regulation to be significant (ps < 0.05) correlates of action control, but in the final model, only surgical treatment (p = 0.02) and PA identity (p < 0.001) were significantly associated with action control. Conclusion: Reflective processes were associated with PA intention formation, while reflexive processes were associated with PA action control. Behavior change efforts for individuals diagnosed with cancer should extend beyond social-cognitive approaches to include regulatory and reflexive processes of PA behavior (i.e., PA identity).

Meeting physical activity (PA) guidelines (i.e., ≥ 150 min/week of aerobic PA and/or 2 days/week of resistance training) is beneficial for maintaining cancer survivors’ well-being. The impact of the COVID-19 pandemic on PA participation in cancer survivors and its association on quality of life (QoL) remains unknown. The purpose of this study was to compare PA levels prior to and during the COVID-19 pandemic, and examine the association between changes in PA and QoL in cancer survivors. A global sample of cancer survivors participated in a cross-sectional, online survey. Participants self-reported their PA participation before and during the pandemic using the Godin Leisure Time Exercise Questionnaire and QoL with the Functional Assessment of Cancer Therapy (FACT) scales. Paired t-tests compared PA before and during the pandemic. Analysis of covariance examined differences in QoL between PA categories: non-exercisers, inactive adopters, complete and partial relapsers, single and combined guideline maintainers. PA participation of cancer survivors (N = 488) significantly decreased during the pandemic (p’s < .001). Cancer survivors were classified as non-exercisers (37.7

Purpose Kidney cancer survivors spend large quantities of time sedentary and little time physically active, which negatively impacts quality of life (QoL). This study examined (1) the association of reallocating sedentary time to sleep, light physical activity (PA), or moderate-to-vigorous PA (MVPA) on QoL in kidney cancer survivors and (2) the threshold at which results are clinically meaningful. Methods Kidney cancer survivors (N = 463) completed a survey including the Godin Leisure-Time Exercise Questionnaire, sitting time, sleep duration, and Functional Assessment of Cancer Therapy (FACT) scales. Isotemporal substitution analyses estimated associations of reallocating sedentary time to PA and sleep on QoL. Results Reallocating 10 min/day of sedentary time to MVPA was significantly associated with higher scores on the Trial Outcome Index-Fatigue (B = 0.60, SE = 0.25, p = 0.02), FACT-Fatigue (B = 0.71, SE = 0.32, p = 0.03), functional well-being (B = 0.18, SE = 0.08, p = 0.02), and fatigue subscales (B = 0.35, SE = 0.15, p = 0.02). Reallocating sedentary time to sleep was significantly associated with higher FACT-General (B = 0.15, SE = 0.08, p = 0.04) and functional well-being subscale (B = 0.06, SE = 0.03, p = 0.049) scores. Reallocating sedentary time to light PA was significantly associated with higher fatigue subscale scores (B = 0.46, SE = 0.23, p = 0.045). Kidney cancer survivors would need to reallocate a minimum of about 83, 200, and 65 min/day of MVPA, sleep, and light PA, respectively, for associations to be clinically meaningful. Conclusions Reallocating sedentary time to MVPA, light PA, or sleep at higher doses is associated with better fatigue and physical aspects of QoL. Interventions should consider replacing sedentary time with MVPA or light PA in a gradual manner, and improve sleep quality for kidney cancer survivors.

Breast cancer survivors (BCS) engage in more sedentary behavior (SED) than those without cancer. However, the context in which SED is accrued is unknown. The purpose of this study is to examine differences in total and domain-specific SED of BCS and healthy controls. 20 BCS and 20 age-matched, healthy controls wore ActiGraph GT3X + accelerometers to measure SED and activity. Participants self-reported SED for transportation, occupational, screen time and leisure purposes. Multiple linear regressions were used to estimate differences in SED between BCS and controls. BCS spent significantly more time watching TV (152.4 vs. 60.3; p < 0.01) and less time in total SED (490.8 vs. 587.4; p = 0.046) and other leisure activities (57.6 vs. 106.9; p < 0.01) than healthy controls. BCS engage in more TV watching and less time in other leisure activities than controls, thus interventions should focus on reducing TV time. Understanding facilitators of TV viewing is needed to determine specific intervention targets.