Julianna Dreger

Ms. Julianna Dreger

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
CWChad W Wagoner
Chad W Wagoner
JDJulianna Dreger
Julianna Dreger
Melanie KeatsMelanie Keats
Melanie Keats
DMDaniel Santa Mina
Daniel Santa Mina
MMMargaret McNeely
Margaret McNeely
S.Nicole Culos-ReedS.Nicole Culos-Reed
S.Nicole Culos-Reed
Barriers to exercise-oncology programs remain for those living with and beyond cancer in rural and remote communities, including geographic isolation and access to programs. The EXercise for Cancer to Enhance Living Well (EXCEL) study was designed to support exercise-oncology implementation in rural and remote communities across Canada. The purpose of this analysis was to evaluate the first-year reach, adoption, and implementation of the EXCEL study. Reach outcomes included participant characteristics, study enrolment, and referral type (self vs. healthcare-provider [HCP] referral). Adoption outcomes included the number of clinical contacts, trained qualified exercise professionals (QEPs), and QEPs delivering EXCEL exercise classes. Implementation outcomes included retention, adherence, assessment completion rates, and adverse-event reporting. A total of 290 individuals living with cancer enrolled in EXCEL in year one, with an 81.4% retention to the study intervention. Most participants self-referred to EXCEL (75.8%). EXCEL’s HCP network consisted of 163 clinical contacts, and the QEP network included 45 trained QEPs, 22 of whom delivered EXCEL classes. Adherence to the exercise intervention was 78.2%, and only one adverse event (mild) was reported. Fitness assessment and patient-reported outcome completion rates were above 85% pre- and post-intervention. EXCEL has developed HCP and QEP networks supporting exercise referral and online delivery, and the intervention is meeting feasibility markers. These implementation findings will inform the continued gathering of feedback across stakeholders to ensure that best evidence informs best practices.

7 September 2023 in JMIR Cancer
Verified
Journal Article
Open access
MEManuel Ester
Manuel Ester
CWChad W Wagoner
Chad W Wagoner
JDJulianna Dreger
Julianna Dreger
GCGuanmin Chen
Guanmin Chen
MMMeghan McDonough
Meghan McDonough
S.Nicole Culos-ReedS.Nicole Culos-Reed
S.Nicole Culos-Reed
Background: Despite the benefits of physical activity (PA) for individuals with cancer, most remain insufficiently active. Exercise oncology interventions can improve PA levels. Individuals struggle to maintain PA levels after interventions because of persistent psychological and environmental PA barriers. Health technology (eHealth) may address some PA barriers and deliver effective, scalable PA interventions in oncology, yet its effectiveness for changing PA levels remains mixed. Using eHealth to support PA maintenance among rural populations with cancer, who may need greater PA support given lower PA levels and worse health outcomes, remains under-studied. Objective: This study examined the effectiveness of an app-based self-monitoring intervention in supporting PA maintenance among rural populations with cancer after a supervised web-based exercise oncology program. Methods: This 2-arm, cluster randomized controlled trial was embedded within the Exercise for Cancer to Enhance Living Well (EXCEL) effectiveness-implementation study. Upon consent, participants were randomized 1:1 by EXCEL class clusters to the intervention (24 weeks of app-based PA self-monitoring) or waitlist control (app access after 24 weeks). Both groups completed a 12-week supervised web-based exercise oncology program followed by a 12-week self-directed PA maintenance period. Baseline demographics, eHealth literacy, and patient-reported outcomes were compared using chi-square and 2-tailed t tests. App use was measured throughout the intervention. The primary outcome—self-reported moderate-to-vigorous PA (MVPA) minutes—and secondary outcomes—objective MVPA minutes and steps and app usability ratings—were collected at baseline, 12 weeks, and 24 weeks. Intervention effects on self-report MVPA maintenance were assessed via linear mixed modeling, with secondary outcomes explored descriptively. Results: Of the 359 eligible EXCEL participants, 205 (57.1%) consented, 199 (55.4%; intervention: 106/199, 53.3%; control: 93/199, 46.7%) started the study, and 183 (51%; intervention: 100/183, 54.6%; control: 83/183, 45.4%) and 141 (39.3%; intervention: 69/141, 48.9%; control: 72/141, 51.1%) completed 12- and 24-week measures, respectively. Mean age was 57.3 (SD 11.5) years. Most participants were female (174/199, 87.4%), White (163/199, 81.9%), and diagnosed with breast cancer (108/199, 54.3%). Median baseline self-report weekly MVPA minutes were 60.0 (IQR 0-180) and 40.0 (IQR 0-135) for the intervention and waitlist control groups, respectively (P=.74). Median app use duration was 10.3 (IQR 1.3-23.9) weeks, with 9.6 (IQR 4.4-17.8) self-monitoring entries/week. Both groups increased their weekly MVPA minutes significantly at 12 weeks (P<.001) and maintained the increases at 24 weeks (P<.001), relative to baseline, with no between-group differences (P=.87). The intervention group had significantly higher step counts for 7 of the 12 weeks during the PA maintenance period (P=.048 to <.001). Conclusions: The app-based self-monitoring intervention did not improve MVPA maintenance but may have contributed to increased step counts during the PA maintenance period. More work is needed to realize the full potential of eHealth in exercise oncology. Trial Registration: ClinicalTrials.gov NCT04790578; https://clinicaltrials.gov/study/NCT04790578 International Registered Report Identifier (IRRID): RR2-10.1016/j.cct.2021.106474

MBMayara Silveira Bianchim
Mayara Silveira Bianchim
Melitta McNarryMelitta McNarry
Melitta McNarry
AHAnne Holland
Anne Holland
NCNarelle S. Cox
Narelle S. Cox
JDJulianna Dreger
Julianna Dreger
Kelly A. MackintoshKelly A. Mackintosh
Kelly A. Mackintosh
This study sought to investigate the association of light physical activity (LPA), moderate-to-vigorous physical activity (MVPA), sedentary time (SED), and sleep with lung function in children and adults with CF. In total, 86 children (41 females; 13.6 ± 2.8 years; FEV1%predicted: 86 ± 1%) and 43 adults (21 females; 24.6 ± 4.7 years; FEV1%predicted: 63 ± 21%) with CF participated in this study. Wrist-worn accelerometery was used to assess PA, SED and sleep. Compositional linear regression models were conducted following normalisation via isometric log-ratio transformations. Sequential binary partitioning was applied to investigate the impact of reallocating 10 to 30 min between each behaviour on FEV1%predicted. A decline in FEV1%predicted was predicted with the reallocation of 30 min from MVPA to SED or LPA or sleep to any other behaviour in children (−3.04–−0.005%) and adults (−3.58–−0.005%). Conversely, improvements in FEV1%predicted were predicted when 30 min was reallocated to MVPA from LPA or SED in children (0.12–1.59%) and adults (0.77–2.10%), or when 30 min was reallocated to sleep from any other behaviour in both children (0.23–2.56%) and adults (1.08–3.58%). This study supports the importance of MVPA and sleep for maintaining and promoting lung function in people with CF.

MBMayara Silveira Bianchim
Mayara Silveira Bianchim
Melitta McNarryMelitta McNarry
Melitta McNarry
ABAlan Barker
Alan Barker
Craig Anthony WilliamsCraig Anthony Williams
Craig Anthony Williams
SDSarah Denford
Sarah Denford
Kelly A. MackintoshKelly A. Mackintosh
Kelly A. Mackintosh
The aim of this study was to compare the use of generic and cystic fibrosis (CF)-specific cut-points to assess movement behaviours in children and adolescents with CF. Physical activity (PA) was assessed for seven consecutive days using a non-dominant wrist-worn ActiGraph GT9X in 71 children and adolescents (36 girls; 13.5 ± 2.9 years) with mild CF. CF-specific and generic Euclidean norm minus one (ENMO) cut-points were used to determine sedentary time (SED), sleep, light physical activity (LPA), moderate physical activity and vigorous physical activity. The effect of using a CF-specific or generic cut-point on the relationship between PA intensities and lung function was determined. Movement behaviours differed significantly according to the cut-point used, with the CF-specific cut-points resulting in less time asleep (−31.4 min; p < 0.01) and in LPA (−195.1 min; p < 0.001), and more SED and moderate-to-vigorous PA (159.3 and 67.1 min, respectively; both p < 0.0001) than the generic thresholds. Lung function was significantly associated with LPA according to the CF-specific cut-points (r = 0.52; p = 0.04). Thresholds developed for healthy populations misclassified PA levels, sleep and SED in children and adolescents with CF. This discrepancy affected the relationship between lung function and PA, which was only apparent when using the CF-specific cut-points. Promoting LPA seems a promising strategy to enhance lung function in children and adolescents with CF.

20 March 2025 in Current Oncology
Verified
Journal Article
Open access
PDF file
AFAlexandra Finless
Alexandra Finless
MBMannat Bansal
Mannat Bansal
TCThomas Christensen
Thomas Christensen
S.Nicole Culos-ReedS.Nicole Culos-Reed
S.Nicole Culos-Reed
CCColleen A. Cuthbert
Colleen A. Cuthbert
Melanie KeatsMelanie Keats
Melanie Keats
Exercise is an evidence-based strategy shown to reduce the negative side effects associated with cancer treatment for individuals living with and beyond cancer (LWBC). Healthcare providers (HCPs) play a critical role in promoting exercise for these individuals. Notwithstanding, several barriers hinder HCPs’ ability to discuss and support exercise in clinical practice. EXCEL is an exercise intervention designed to address health disparities in access to exercise oncology resources for rural/remote individuals LWBC, including a referral pathway for HCPs to use. The purpose of this study was to evaluate HCP experiences using the EXCEL exercise referral pathway. We employed an interpretive description methodology, using semi-structured interviews to assess HCP experiences with EXCEL. Overall, HCPs felt empowered to refer to exercise when they were supported in doing so. The findings highlighted (1) a need for a better understanding of the role of exercise professionals and their integration into cancer care; (2) the need for efficient referral systems including embedding referrals into existing health care electronic record systems; and (3) sharing patient feedback with exercise oncology programs back to the HCPs to drive continued referrals.

19 March 2024 in Current Oncology
Verified
Journal Article
Open access
PDF file
MEManuel Ester
Manuel Ester
MMMeghan McDonough
Meghan McDonough
MBMannat Bansal
Mannat Bansal
JDJulianna Dreger
Julianna Dreger
JDJulia Daun
Julia Daun
S.Nicole Culos-ReedS.Nicole Culos-Reed
S.Nicole Culos-Reed
Background: Physical activity (PA) can improve the physical and psychosocial health of individuals with cancer, yet PA levels remain low. Technology may address PA maintenance barriers in oncology, though the intervention effectiveness to date remains mixed. Qualitative research can reveal the nuances of using technology-based PA maintenance tools. The present study aimed to understand the perspectives of individuals with cancer on using an app to support PA maintenance. Methods: Individuals were interviewed after using a self-monitoring app for 24 weeks, asking about their app use, ease of use, and perceived value for supporting PA. Analyses were guided by an interpretive description. Results: Eighteen individuals were interviewed. The participants were 37–75 years old; lived in seven Canadian provinces/territories; identified as White, South Asian, or Indigenous; and had eight different cancers. Four themes were developed: some did not need the app to stay physically active, some valued the app for helping them maintain their PA, the user experience ranged from intuitive to confusing, and the time burden of app use ranged from acceptable to overwhelming. Conclusions: The participants provided insights on using a self-monitoring app to improve PA maintenance in oncology. Work is needed to capture additional perspectives and apply findings to the development of technology-based PA maintenance tools.