Exercise During Cancer Treatment: Safe Movement for Better Outcomes

Exercise during and after cancer treatment offers significant benefits, including reduced fatigue, better treatment tolerance, improved mood, and potentially better outcomes. While it may seem counterintuitive to exercise when undergoing treatment, research strongly supports physical activity as beneficial and safe for most cancer patients.

Why Exercise Matters in Cancer

Research shows exercise can:

• Reduce cancer-related fatigue by 25-40%
• Improve quality of life
• Decrease treatment side effects
• Reduce anxiety and depression
• Maintain muscle mass and strength
• Improve treatment tolerance
• Potentially improve survival (some cancers)
• Help manage weight
• Improve sleep

Important: Always get clearance from your oncologist before starting or continuing exercise during treatment.

General Guidelines

Before exercising:

• Get medical clearance from oncologist
• Know your blood counts (if relevant)
• Understand any activity restrictions
• Stay hydrated
• Listen to your body

Safety considerations by blood counts:

Platelets (clotting cells):

• Above 50,000: Most activities OK
• 20,000-50,000: Avoid contact sports, heavy lifting
• Below 20,000: Light activity only, consult doctor

White blood cells/Neutrophils (infection fighting):

• Low counts: Avoid public gyms/pools
• Exercise at home or outdoors
• Maintain hygiene

Hemoglobin (oxygen-carrying):

• Low levels: May fatigue more easily
• Adjust intensity accordingly
• Listen to your body

When to NOT exercise:

• Fever or active infection
• Severely low blood counts
• Severe nausea or vomiting
• Chest pain or shortness of breath
• New or unexplained pain
• Doctor advises against it
• Feeling significantly unwell

Managing Cancer-Related Fatigue

The paradox: Exercise reduces fatigue, but fatigue makes exercise hard.

Key principles:

• Start where you are (even 5 minutes helps)
• Something is better than nothing
• Don't wait to "feel like it"
• Energy often increases once you start
• Pacing is essential

Fatigue management strategies:

• Exercise when energy is highest
• Break activity into short sessions
• Rest before exhaustion
• Balance activity and rest
• Keep a fatigue diary
• Gradual progression

Exercise During Chemotherapy

General recommendations:

• Exercise on good days and bad days (modify intensity)
• Avoid peak fatigue times (often 2-3 days post-treatment)
• Stay hydrated
• Avoid extreme temperatures
• Protect yourself from infection

Good activities:

• Walking
• Light strength training
• Stretching
• Yoga (modified)
• Swimming (if counts adequate and no port)
• Cycling (stationary may be easier)

Timing around treatment:

• Day of treatment: Light activity if tolerated
• Days 2-4: Often worst fatigue—do what you can
• Days 5-7+: Gradually increase as able

Exercise During Radiation

General recommendations:

• Usually can exercise throughout treatment
• Avoid irritating treatment area
• Skin care in treatment area important
• Fatigue may accumulate over time

Considerations:

• Breast/chest radiation: May need to avoid certain arm movements
• Pelvic radiation: May affect bladder/bowel (plan accordingly)
• Head/neck radiation: Swallowing/nutrition may affect energy

Exercise After Surgery

General timeline:

• Day 1-2: Breathing exercises, bed mobility
• Week 1-2: Walking, gentle movement
• Week 2-6: Gradual increase in activity
• Week 6+: Progress toward normal (with guidance)

Always follow your surgeon's specific instructions.

Common surgery considerations:

After breast surgery:

• Shoulder mobility exercises when cleared
• Lymphedema precautions (if nodes removed)
• Gradual return to upper body exercise

After abdominal surgery:

• Core protection initially
• No heavy lifting (6-8 weeks typically)
• Progress gradually

Lymphedema Considerations

If lymph nodes were removed or radiated:

Precautions:

• Build up exercise gradually
• Wear compression garment if prescribed
• Avoid extreme temperatures
• Watch for signs of swelling
• Report changes to healthcare team

Exercise is generally safe and helpful:

• Strength training doesn't increase lymphedema risk
• May actually reduce risk
• Progress gradually
• Monitor affected limb

Recommended Activities

Walking

Benefits:

• Simple and accessible
• Can adjust intensity easily
• Can do anywhere
• Social if with others

Recommendations:

• Start with what you can do (even 5 minutes)
• Build gradually
• Daily if possible
• Use fatigue as guide

Strength Training

Benefits:

• Maintains muscle mass
• Combats treatment-related weakness
• Improves function
• Helps with balance

Recommendations:

• 2-3 days per week
• Start with light weights or bodyweight
• 8-12 exercises covering major muscles
• 1-3 sets of 8-15 reps
• Progress gradually

Stretching and Flexibility

Benefits:

• Reduces stiffness
• Maintains range of motion
• Relaxation
• Can do when fatigued

Recommendations:

• Daily if possible
• Gentle stretching
• Yoga (modified for energy/limitations)
• Tai chi

Cardiovascular Exercise

Benefits:

• Improves endurance
• Reduces fatigue over time
• Heart and lung health
• Mood improvement

Options:

• Walking
• Cycling (stationary or outdoor)
• Swimming (if appropriate)
• Dancing
• Elliptical

Goal: Work toward 150 minutes/week moderate activity (build up gradually)

Sample Exercise Programs

Low Energy Day:

• Gentle stretching: 5-10 minutes
• Short walk: 5-10 minutes
• Deep breathing: 5 minutes

Moderate Energy Day:

• Walking: 15-20 minutes
• Light strength training: 10-15 minutes
• Stretching: 10 minutes

Higher Energy Day:

• Walking or cycling: 20-30 minutes
• Strength training: 20 minutes
• Stretching: 10 minutes

Weekly Structure:

• Aim for some activity most days
• Alternate strength training days
• Adjust based on treatment schedule and energy
• Rest when needed

Exercise for Specific Side Effects

For nausea:

• Gentle walking often helps
• Fresh air can reduce nausea
• Avoid intense exercise when nauseous
• Try before meals

For peripheral neuropathy:

• Balance exercises (safely)
• Stationary bike may be easier
• Strength training for affected limbs
• Fall prevention focus

For bone metastases:

• Get specific guidance from oncologist
• Avoid high-impact activities
• May need to modify certain exercises
• Weight-bearing still often beneficial

For joint pain (from hormonal therapy):

• Gentle movement helps
• Swimming/water exercise
• Stretching
• Low-impact activities

Emotional Benefits

Exercise helps with:

• Anxiety reduction
• Depression improvement
• Sense of control
• Social connection (if exercising with others)
• Self-esteem
• Body image
• Sleep quality

After Treatment Ends

Transition to "survivorship":

• Gradually increase activity
• Work toward standard exercise guidelines
• Address any treatment-related limitations
• Monitor for late effects
• Maintain healthy habits long-term

Goals for survivors:

• 150+ minutes moderate aerobic activity weekly
• Strength training 2-3 days weekly
• Flexibility work
• Balance training (especially if neuropathy)

Finding Support

Resources:

• Oncology physical therapist
• Cancer exercise specialist
• Hospital wellness programs
• Cancer support groups with exercise
• ACSM Certified Cancer Exercise Trainer

What they can help with:

• Personalized programming
• Managing limitations
• Addressing side effects
• Motivation and support
• Safe progression

Key Takeaways

1. Exercise is safe and beneficial: For most cancer patients during and after treatment
2. Get medical clearance: Talk to your oncologist first
3. Start where you are: Even 5 minutes counts
4. Listen to your body: Modify intensity based on how you feel
5. Fatigue isn't a reason to stop: Exercise reduces fatigue over time
6. Something is always better than nothing: Low energy days still benefit from gentle movement
7. Progress gradually: Build up over weeks and months
8. Seek support: Oncology exercise specialists can help

Exercise is one of the most powerful tools you have during cancer treatment. While it may feel difficult, the benefits for fatigue, mood, function, and potentially outcomes make it worth the effort.