Exercise During Cancer Treatment Guide Oakville | RCP Health

If you’re currently going through cancer treatment and wondering whether exercise is safe — or even possible — you’re not alone. This question comes up in my clinic regularly, and the short answer is yes: not only is exercise generally safe during active treatment, but there is now substantial evidence that it can meaningfully support your wellbeing throughout the process. The conversation has shifted dramatically in oncology over the past decade. Rest is no longer the default recommendation. Movement, prescribed appropriately and monitored carefully, is increasingly recognised as a core component of cancer care.

What the Evidence Actually Says About Exercise and Cancer Treatment

The American College of Sports Medicine (ACSM) updated its exercise guidelines for cancer patients in 2019 following a comprehensive review of the research. Their position is clear: exercise is not only safe during cancer treatment but is strongly recommended. The guidelines suggest that most cancer patients engage in at least 150 minutes of moderate-intensity aerobic activity per week, along with two sessions of resistance training. They also introduced specific recommendations for managing cancer-related fatigue, anxiety, depression, and lymphedema — recognising that exercise has a role in addressing these side effects directly, not just improving general fitness.

What surprises many patients is how counterintuitive this feels when you’re exhausted from chemotherapy or radiation. The instinct is to rest more. But cancer-related fatigue — one of the most debilitating side effects of treatment — actually responds better to graded exercise than to rest alone. This doesn’t mean pushing through exhaustion inappropriately; it means that the physiology of treatment-related fatigue is different from ordinary tiredness, and gentle, progressive movement can interrupt the cycle of deconditioning that makes fatigue worse over time.

Facts and figures: According to a landmark study published in the Journal of the National Cancer Institute by Schmitz et al. (2010), which informed the ACSM’s updated guidelines, exercise interventions during and after cancer treatment were found to improve quality of life, physical function, and fatigue outcomes across multiple cancer types. The ACSM guidelines review included over 2,500 peer-reviewed publications, making it one of the most comprehensive evidence syntheses in cancer rehabilitation to date.

Managing Treatment Side Effects During Exercise

In clinical practice, I frequently see patients who want to exercise but don’t know how to adapt their sessions around the specific side effects they’re experiencing. This is where physiotherapy-led prescription makes a genuine difference — because managing exercise around chemotherapy side effects requires more than general fitness knowledge.

Chemotherapy-induced peripheral neuropathy (CIPN) affects the hands and feet and causes symptoms ranging from numbness and tingling to significant balance disruption. Patients with CIPN need modified exercise environments — solid, predictable surfaces, handrails where available, and balance training that is progressive and carefully monitored. I avoid high-impact or unpredictable movement patterns with these patients until their proprioception (the body’s sense of its own position in space) is assessed and stability is established. Resistance training with CIPN requires close attention to grip and foot positioning, since sensory feedback is compromised.

Nausea is another common barrier. A clinical nuance that many patients don’t hear about: exercise timing relative to chemotherapy infusion cycles matters significantly. Many patients tolerate light-to-moderate exercise better in the mid-cycle window — typically days four through ten of a standard three-week cycle — when acute nausea has settled but fatigue hasn’t yet peaked again. Scheduling exercise in the morning when nausea tends to be lower, staying well hydrated, and choosing horizontal or reclined positions for some exercises can also help patients stay active through difficult days.

Practical considerations for exercising safely during active treatment include:

• Avoiding public gyms or pools during periods of immunosuppression — home-based or clinic-based exercise reduces infection exposure
• Monitoring for signs of thrombocytopenia (low platelet count) — contact sports and high-impact activity are contraindicated when platelets are significantly reduced
• Adapting exercise intensity on days following infusion — a perceived exertion scale (RPE) is often more clinically useful than heart rate targets during treatment
• Watching for unusual shortness of breath or chest discomfort, which may indicate cardiac effects from certain chemotherapy agents and warrant immediate medical review
• Communicating openly with your oncology team — physiotherapists work best when they have access to your current blood counts, treatment schedule, and any cardiac monitoring requirements

When to Modify, When to Pause, and When to Refer

This is an area that requires real clinical judgment, and it’s something I take seriously with every patient I see at RCP Health Oakville. Exercise during cancer treatment is not one-size-fits-all, and there are presentations where slowing down or pausing exercise is the right clinical decision — not a failure.

A pattern I notice consistently with this population is that patients who are mid-way through aggressive chemotherapy regimens often have fluctuating capacity from week to week, sometimes day to day. Building flexibility into the program — what I sometimes call a “tiered plan” — means the patient has a moderate-day option, a low-energy-day option, and a minimum viable movement option for the hardest days. This prevents the all-or-nothing thinking that leads people to stop exercise entirely after one difficult week.

Bone metastases require particular attention. Patients with known skeletal involvement need a careful physiotherapy assessment to determine which movements are safe, since the mechanical loading that is beneficial for healthy bone can be contraindicated at sites of metastatic disease. This is not a situation for independent exercise prescription — it requires direct collaboration between the physiotherapist, oncologist, and often a radiologist to understand the structural integrity of the affected bone before loading decisions are made.

Presentations that respond well to physiotherapy-led exercise include fatigue management, deconditioning, mild to moderate neuropathy balance work, post-surgical functional recovery, and lymphedema prevention with appropriate upper limb exercise. More complex presentations — including significant cardiac compromise, severe neuropathy with fall risk, active bone metastases, or poorly controlled nausea — benefit from a broader multidisciplinary team approach.

How RCP Health Oakville Prescribes Cancer Rehabilitation Programs

At RCP Health Oakville, cancer rehabilitation is genuinely individualised — and that word gets used loosely in healthcare, so I want to be specific about what it means here. Before any exercise prescription is developed, we conduct a thorough intake that includes your current treatment protocol, known side effects, blood count status, any metastatic involvement, pre-treatment fitness baseline, and your personal goals for what you want to be able to do during and after treatment.

From there, exercise programs are built around where you are in your treatment cycle, not where you were before diagnosis. We adjust as your treatment progresses, and we communicate with your oncology team when clinically relevant. Our approach draws on the ACSM guidelines while applying the clinical reasoning that comes from working with this population over many years — knowing when to progress, when to hold, and when to ask more questions.

If you or someone you care about is currently in active cancer treatment and wondering how to stay as strong and functional as possible through the process, I’d encourage you to take that next step. Book your assessment today and let’s build a plan that meets you where you are.