Structured Exercise after Adjuvant Chemotherapy for Colon Cancer

Area of Science:

• Oncology
• Exercise Science
• Clinical Trials

Background:

• Preclinical and observational studies suggest exercise benefits cancer outcomes.
• Definitive Level 1 evidence for exercise's impact on cancer survival has been lacking.

Purpose of the Study:

• To investigate the efficacy of a structured exercise program in improving cancer outcomes for patients with resected colon cancer.
• To provide Level 1 evidence regarding the role of exercise in colon cancer survivorship.

Main Methods:

• Phase 3, randomized trial involving 889 patients with resected colon cancer who completed adjuvant chemotherapy.
• Participants were assigned to a 3-year structured exercise program or a health-education control group.
• Primary endpoint was disease-free survival.

Main Results:

• Median follow-up of 7.9 years revealed significantly longer disease-free survival in the exercise group (HR, 0.72; P=0.02).
• Five-year disease-free survival was 80.3% in the exercise group versus 73.9% in the control group.
• The exercise group also demonstrated trends towards longer overall survival (8-year OS: 90.3% vs 83.2%).
• Musculoskeletal adverse events were more frequent in the exercise group (18.5% vs 11.5%).

Conclusions:

• A 3-year structured exercise program initiated after adjuvant chemotherapy for colon cancer significantly enhances disease-free survival.
• The findings suggest a positive impact on overall survival, supporting exercise as a beneficial intervention in colon cancer care.
• Further research may explore optimizing exercise protocols and managing potential adverse events.