Participants allocated to group A will receive a behavioural support intervention via real-time videoconferencing.

Participants allocated to group B will receive usual care and will be advised to continue with their regular activities of daily living.

Participants in Group A will receive six real-time, 1-on-1 60-minute sessions led by a physical activity counsellor over a 12-week period. Sessions will be delivered via videoconferencing and will aim to provide young adult cancer survivors with support as well as the knowledge, skills, and confidence to identify and overcome challenges to engaging in physical activity in order to increase physical activity behaviour and enhance patient-reported outcomes.

12-week videoconferencing behavioural support intervention to promote physical activity behaviour

Survival rates for cancer are increasing, resulting in more young adult cancer survivors living with lingering side effects. Physical activity has been shown to improve the quality and length of life in young adult cancer survivors; yet, few are active enough, and little is currently being done to promote physical activity in this population. The investigators developed a novel behaviour support intervention to promote physical activity in young adult cancer survivors. In this two-arm pilot randomized controlled trial, the investigators aim to: (1) assess trial and intervention feasibility, (2) assess trial and intervention acceptability, and (3) generate data on physical activity behaviour. Young adult cancer survivors will be randomized to receive either a 12-week behaviour support intervention delivered via videoconferencing or will be allocated to usual care.

Background: Young adults commonly experience persistent side effects following cancer treatment that impair quality of life. Physical activity (PA) holds promise as an intervention to mitigate persistent side effects and improve quality of life. Yet, few young adults are active enough to incur these benefits and efforts to promote PA following cancer treatment are lacking. Therefore, the investigators developed a novel behaviour support intervention to promote PA in young adults following cancer treatment, and have undertaken a pilot randomized controlled trial (RCT) to determine whether the intervention delivered via videoconferencing is both feasible and acceptable. Specifically, the aims of this ongoing parallel group two-arm pilot RCT are to: (1) assess trial and intervention feasibility and acceptability, and (2) generate data on PA behaviour.

Methods: Young adults who have completed cancer treatment are recruited from across Canada. Recruits are randomized to the intervention group (IG; i.e., a 12-week behaviour support intervention delivered via videoconferencing) or usual care (UC; no intervention). Drawing on the CONSORT 2010 statement and flow diagram, several feasibility outcomes pertaining to enrolment, allocation, follow-up, and analysis are tracked by study staff. Acceptability is assessed through interviews exploring IG and UC participants' experiences, thoughts, and perspectives of the trial, IG participants' views of the intervention and its mode of delivery, and PA counsellors' experiences delivering the intervention. PA is measured using accelerometers. Assessments take place at baseline (pre-randomization), post-intervention period, and at follow-up (24 weeks post-baseline).

Discussion: Feasibility and acceptability data will help determine if/what changes/modifications are needed to improve the trial protocol and/or intervention, and will inform the timeline for a definitive RCT. The PA behaviour data collected will inform sample size calculation for a future RCT that aims to test the effects of this intervention in young adults following cancer treatment.

Physical Activity Counselling for Young Adult Cancer Survivors

Self-reported socio-demographic and medical information (e.g., age, gender, civil and educational status, ethnicity) will be collected and used to describe the sample. Participants will be provided with a range of response options for each item.

The number of eligible participants who enrol in the trial out of the number who are referred

The number of intervention sessions attended out of the total recommended as part of the intervention

Participants will be asked to share their experiences, thoughts, and perspectives of the trial, the physical activity counsellor and the intervention by responding to open and close-ended questions during a semi-structured interview. Responses to close-ended questions will range from 1 ('poor' or 'not satisfied at all') to 10 ('excellent' or 'extremely satisfied').

The number of participants completing all three scheduled assessments.

The percentage of missing data on quantitative measures.

The number of participants completing the acceptability interview following the intervention.

Change in participants' objective levels of physical activity as measured by accelerometers (ActiGraph GT3X+), which will be worn for a 7-day period across baseline (week 0), post-intervention (week 12), and follow-up (week 24).

Change in participants' self-reported health-related quality of life across baseline (week 0), post-intervention (week 12) and post-intervention follow-up (week 24). The SF-36 measures eight dimensions: physical functioning, bodily pain, role limitations due to physical health problems, role limitations due to personal or emotional problems, emotional well-being, social functioning, energy/fatigue, and general health perceptions. It also includes a single item that provides an indication of perceived change in health. Each item is scored on a 0 to 100 scale, with higher scores representing a more favourable health state.

Change in participants' self-reported positive and negative affect across baseline (week 0), post-intervention (week 12) and post-intervention follow-up (week 24). Each item is scored on a scale from 1 ('Very slightly or not at all') to 5 ('Extremely'). Items in the positive scale are averaged together to create a Positive Affect Score, and items in the negative scale are averaged together to create a Negative Affect Score. Higher positive and negative scores represent higher positive and negative affect, respectively.

Change in participants self-reported depressive symptoms across baseline (week 0), post-intervention (week 12) and post-intervention follow-up (week 24). Each item is scored on a 0 ('Not at all') to 3 ('Nearly every day') scale with higher scores representing greater severity of depressive symptoms.

Change in participants self-reported anxiety symptoms across baseline (week 0), post-intervention (week 12) and post-intervention follow-up (week 24). Each item is scored on a 0 ('Not at all') to 3 ('Nearly every day') scale, with higher scores representing greater severity of anxiety symptoms.

Change in participants' self-reported perceptions of cancer impact from baseline (week 0), post-intervention (week 12) and post-intervention follow-up (week 24). Each item is scored on a scale from 0 ('Strongly disagree') to 4 ('Strongly agree'), with higher scores representing greater impact of cancer.

Change in participants' self-reported motivation for physical activity across baseline (week 0), post-intervention (week 12) and post-intervention follow-up (week 24). This measure taps six behavioural regulations in the physical activity context: amotivation, external, introjected, identified, integrated, and intrinsic motivation. Each item is scored on a scale from 0 ('Not true for me') to 4 ('Very true for me'), with higher scores reflecting greater amotivation, external, introjected, identified, integrated, and intrinsic motivation for physical activity.

Change in participants self-reported psychological need satisfaction in relation to physical activity across baseline (week 0), post-intervention (week 12) and post-intervention follow-up (week 24). The PNSE measures perceptions of competence, autonomy and relatedness in relation to physical activity. Each item is scored on a scale from 1 ('False') to 6 ('True'), with higher scores representing greater perceived competence, autonomy and relatedness.

Participants perceived sense of autonomy support, structure and interpersonal involvement for physical activity post-intervention (week 12). Each item is scored on a scale from 1 ('Strongly disagree') to 7 ('Strongly agree'), with higher scores representing greater perceived autonomy support, structure and interpersonal involvement for physical activity.

Spots Global Cancer Trial Database for behaviour change techniques