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Physical Activity in Osteosarcoma Patients During and Post Therapy: A Single Site Prospective Observational Study
Elysia R Cohen1, Clark Andersen2, Karen Moody1
1Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
Cancer Medicine
|February 26, 2026
Summary
Children with osteosarcoma show low physical activity during treatment. Tailoring exercise programs to treatment schedules may improve outcomes and quality of life for pediatric cancer patients.
Area of Science:
- Pediatric Oncology
- Rehabilitation Medicine
- Cancer Survivorship
Background:
- Osteosarcoma is a common childhood bone cancer impacting patient quality of life.
- Limited data exist on physical activity in pediatric osteosarcoma patients during treatment.
- Exercise interventions show promise for cancer patients but need specific data for this population.
Purpose of the Study:
- To understand physical activity patterns in children and adolescents with osteosarcoma.
- To inform the design of effective exercise interventions throughout the treatment and survivorship continuum.
- To assess activity levels in relation to treatment phases.
Main Methods:
- Wearable activity trackers were used to monitor physical activity in osteosarcoma patients.
- Inclusion criteria encompassed all ages, genders, and treatment stages, including post-treatment.
- Valid data required at least 3 days with over 10 hours of continuous heart rate monitoring.
Main Results:
- Twenty-six patients provided valid activity data.
- Average daily steps were 3184 ± 2553 on treatment days and 4884 ± 2447 on off-treatment days.
- Most patients remained below recommended daily step counts until after therapy completion.
Conclusions:
- Physical activity levels in pediatric osteosarcoma patients are generally low during treatment.
- Exercise programs may benefit from encouraging activity on chemotherapy days and scheduling intensive exercise post-therapy.
- Further research is necessary to develop targeted interventions to enhance physical activity in this population.
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