Cancer Research UK (CRUK) found patients in a structured exercise programme were 37% less likely to die in the eight years following their treatment.

CRUK chief clinician, Professor Charles Swanton, said: ‘For an intervention that isn't a drug, exercise offers remarkable benefits for patients.

‘For some people with colon cancer, physical activity can be a game-changer that shifts the course of their recovery.'

After five years, 80% of people supported to do structured exercise remained cancer free, compared with 74% of those who were given standard booklets. At eight years, 90% of people with structured exercise programmes were still alive, up from 83% in the health education materials group.

Professor Vicky Coyle at the University of Belfast, who led the research in the UK, said: 'Our study gives clear, encouraging evidence that physical activity can reduce the risk of cancer returning for some people with colon cancer. We now need to work with policymakers and healthcare providers to embed exercise into treatment plans where appropriate.'

NHS national clinical director for cancer, Professor Peter Johnson, said: ‘These exciting findings add to the growing evidence of the benefits of physical activity for people affected by cancer, not just in helping them be fitter for treatment and boosting their immediate recovery, but reducing the risk of the disease coming back.

‘This is why we've asked Cancer Alliances across the country to look at ways to encourage and support patients to do physical activity and ensure every healthcare professional they see can help them be in the best possible place – both physically and mentally – before, during and after treatment.'