Which statement best describes the effect of cancer treatment on exercise tolerance?

Which statement best describes the effect of cancer treatment on exercise tolerance?

• A. Exercise tolerance remains constant for all patients.
• B. Exercise tolerance improves for most patients during treatment.
• C. Exercise tolerance can decline due to anaemia, deconditioning, or treatment side effects.
• D. Exercise tolerance is not a consideration in treatment planning.

Answer: (C)

During cancer treatment, exercise tolerance often declines because the therapy affects several body systems and daily activity. Anemia reduces the blood’s ability to carry oxygen to muscles, causing more fatigue and shortness of breath with exertion. Deconditioning can occur from reduced overall activity, leading to lower endurance and weaker muscles. Treatment side effects—such as fatigue, pain, nausea, neuropathy, and mucositis—limit how much activity a person can comfortably do. Taken together, these factors commonly lower exercise tolerance during active treatment, though some individuals may stabilize or improve after therapy ends. This is why recognizing potential declines is important in treatment planning, rather than assuming tolerance stays the same or that it improves for most during treatment.

During cancer treatment, exercise tolerance often declines because the therapy affects several body systems and daily activity. Anemia reduces the blood’s ability to carry oxygen to muscles, causing more fatigue and shortness of breath with exertion. Deconditioning can occur from reduced overall activity, leading to lower endurance and weaker muscles. Treatment side effects—such as fatigue, pain, nausea, neuropathy, and mucositis—limit how much activity a person can comfortably do. Taken together, these factors commonly lower exercise tolerance during active treatment, though some individuals may stabilize or improve after therapy ends. This is why recognizing potential declines is important in treatment planning, rather than assuming tolerance stays the same or that it improves for most during treatment.