Physical activity barriers, preferences, and beliefs in childhood cancer patients.

PURPOSE: Childhood cancer patients report low physical activity levels despite the risk for long-term complications that may benefit from exercise. Research is lacking regarding exercise barriers, preferences, and beliefs among patients (1) on- and off-therapy and (2) across the age spectrum. METHODS: Cross-sectional study in the Yale Pediatric Hematology-Oncology Clinic (October 2013-October 2014). Participants were ≥ 4 years old, > 1 month after cancer diagnosis at < 20 years, not acutely ill, expected to live > 6 months, and received chemotherapy and/or radiation. Participants (or parents if < 13 years) completed a survey. RESULTS: The 162 patients (99% participated) were 34% children (4.0-12.9 years), 31% adolescents (13.0-17.9 years), and 35% adults (≥ 18 years). Most had leukemia/lymphoma (66%); 32% were on-therapy. On-therapy patients were more likely than off-therapy patients (73 vs. 48%; p = 0.003) to report ≥ 1 barrier related to physical complaints, such as "just too tired" (46 vs. 28%; p = 0.021) or "afraid" of injury (22 vs. 9%; p = 0.027). The majority preferred walking (73%), exercising at home (91%), exercising in the afternoon (79%), and a maximum travel time of 10-20 min (54%); preferences did not vary significantly by therapy status or age. Most respondents (94%) recognized the benefits of exercise after cancer, but 50% of on- vs. 12% of off-therapy patients believed "their cancer diagnosis made it unsafe to exercise regularly" (p < 0.001). CONCLUSIONS: Physical activity barriers pertaining to physical complaints and safety concerns were more pronounced in on-therapy childhood cancer patients but persisted off-therapy. Preferences and beliefs were relatively consistent. Our data can inform interventions in different patient subgroups.

A home-based physical activity intervention using activity trackers in survivors of childhood cancer: A pilot study.

BACKGROUND: Over 70% of childhood cancer survivors develop late complications from therapy, many of which can be mitigated by physical activity. Survivors engage in exercise at similar or lower rates than their sedentary healthy peers. We piloted a novel home-based exercise intervention with a motivational activity tracker. We evaluated (i) feasibility, (ii) impact on activity levels and physical fitness, and (iii) barriers, preferences, and beliefs regarding physical activity. METHODS: Childhood cancer survivors currently 15 years or older and not meeting the Centers for Disease Control and Prevention physical activity guidelines were enrolled and instructed to wear the Fitbit One, a 4.8 cm × 1.8 cm motivational activity tracker, daily for 6 months. Baseline and follow-up evaluations included self-report surveys, an Actigraph accelerometer for 7 days, and a VO2 maximum test by cardiac stress test. RESULTS: Nineteen participants were enrolled (13.4% participation rate) with a mean age of 24.3 ± 5.8 years (range 15-35). Four participants withdrew with a 79% retention rate. Participants wore the Fitbit an average of 19.0 ± 4.7 days per month during months 1-3 and 15.0 ± 7.9 days per month during months 4-6. Total weekly moderate to vigorous physical activity increased from 265.6 ± 117.0 to 301.4 ± 135.4 min and VO2 maximum increased from 25.7 ± 7.7 to 27.2 ± 7.4 ml/kg/min. These changes were not statistically significant (P = 0.47 and 0.30, respectively). Survey responses indicated no change in barriers, preferences, and beliefs regarding physical activity. CONCLUSIONS: This pilot study of a motivational activity tracker demonstrated feasibility as measured by participant retention, receptivity, and belief of utility. Future studies with a large sample size are needed to demonstrate the efficacy and sustainability of this intervention.