Can the findings in the recently published article, “Motivation Matters: Elucidating Factors Driving Exercise in People with Parkinson Disease” be relevant to patients with cancer? I believe the answer is “yes”. The determinants of exercise adherence identified in this Parkinson disease (PD) report provide clinically relevant insights that translate directly to oncology populations.
Cancer survivors face persistent barriers to physical activity—including fatigue, depression, treatment-related functional decline, uncertainty about safe exercise thresholds, and environmental limitations—that closely mirror the motivational constructs observed in PD. Understanding how personal, disease-related, and environmental factors drive or hinder exercise motivation in PD provides a useful framework to strengthen exercise uptake and sustainability among patients with cancer.
Personal Factors: Premorbid Motivation and Self-Compassion
In the PD cohort, higher premorbid motivation and greater self-compassion were strongly associated with current exercise motivation. These constructs are equally meaningful in oncology. Many survivors who were physically active prior to diagnosis show higher adherence to exercise programs during and after treatment; historically sedentary patients often require more structured behavioral support.
Importantly, self-compassion—a psychological construct associated with improved emotional resilience—was a positive determinant in PD. Cancer survivors frequently struggle with guilt, perceived physical inadequacy, and fear of overexertion. Integrating self-compassion strategies such as reframing setbacks, normalizing fatigue, and promoting self-kindness can therefore enhance intrinsic motivation and reduce dropout. Oncology rehabilitation programs can explicitly address these internal drivers by coupling exercise prescription with behavioral counseling, motivational interviewing, and supportive peer interactions.
Disease-Related Factors: Depression, Functional Severity, and Age
The PD study demonstrated that higher depression scores and higher perceived disease severity both independently predicted lower exercise motivation. This relationship is particularly relevant in oncology, where depression prevalence is high and functional decline can occur rapidly due to surgery, chemotherapy, radiation, or hormone therapy. Depression is a potent detractor from physical activity in cancer patients and often magnifies fatigue perceptions, reduces initiative, and increases avoidance behaviors—precisely the pattern seen in PD.
Perceived disease severity also plays a major role in cancer survivors’ willingness to engage in exercise. Patients who believe their cancer or treatment side effects are “too severe” often under-estimate their capacity for safe activity. This highlights the importance of oncology-specific education, early introduction of exercise expectations, and reassurance about safety—even during active treatment. As in PD, early-stage individuals and younger adults often demonstrate stronger motivation, underscoring the need for proactive referral before functional decline occurs.
Environmental Factors: Fatigue, Weather, Logistics, and Social Support
The PD population identified fatigue, adverse weather, and post-exercise energy depletion as primary barriers—nearly identical to the most commonly cited obstacles among cancer patients. Fatigue is the most prevalent and debilitating side effect across cancer patients, and it frequently undermines exercise adherence even when motivation is high. These findings emphasize the need for:
- Flexible scheduling
- Home-based or tele-exercise options
- Energy-conserving exercise strategies
- Symptom-responsive progression models
Social support also emerged as a meaningful motivator in PD, with participants more likely to engage when partners or peers endorsed the activity. Group-based oncology programs, survivor cohorts, and partner-inclusive exercise sessions can replicate this benefit.
Implications for Oncology Practice
Applying the PD motivation model to oncology can strengthen adherence and long-term engagement by:
- Integrating behavioral and psychological determinants (self-compassion, depression screening, motivational interviewing) into exercise counseling.
- Targeting early intervention, as lower disease severity correlates with higher motivation.
- Prioritizing individualized prescription, given the strong influence of past behavior and personal preference.
- Addressing environmental barriers proactively, particularly fatigue and logistical issues.
- Leveraging social connectedness, including partner involvement and peer support.
In sum, the PD study provides a robust, transferable behavioral framework. Its motivational determinants align closely with the psychosocial and functional realities of cancer survivorship, offering clinicians actionable strategies to improve exercise adherence across oncology settings.
Reference: Physical Therapy & Rehabilitation Journal | Physical Therapy, 2025;105:pzaf048 https://doi.org/10.1093/ptj/pzaf048
