Who Is Phase 4 Cardiac Rehab Designed For?
One of the most common questions patients, GPs, and carers ask me is: “Is Phase 4 cardiac rehabilitation suitable for me?” It is a completely understandable question. After a cardiac event or surgery, there is often uncertainty about which exercises are safe, what level of supervision is needed, and whether a community programme is appropriate given a particular medical history.
My aim in this article is to answer that question as clearly and helpfully as I can. I am Richard Stantiford, a BACPR-qualified Clinical Exercise Specialist based in Brighton, and I have been working with cardiac patients in Phase 4 settings for over three decades. I will walk you through who Phase 4 is designed for, the conditions it covers, what the assessment process looks like, and how to take the first step towards joining a programme.
A Quick Recap: What Is Phase 4?
Phase 4 is the long-term, community-based stage of cardiac rehabilitation. It follows the supervised NHS outpatient programme (Phase 3) and is designed to provide ongoing structured exercise, monitoring, and peer support to help patients preserve and build upon the health gains made during formal treatment.
Unlike Phase 3, which is time-limited and usually ends after six to twelve weeks, Phase 4 is designed to continue indefinitely, becoming a permanent, enjoyable part of a person’s lifestyle. It is run by qualified instructors in community settings such as leisure centres, private clinics, or, in my case, dedicated online and in-person sessions in Brighton.
Who Is Phase 4 Cardiac Rehab Designed For?
Phase 4 is designed for adults with a diagnosed cardiovascular condition who have completed, or would benefit from, structured cardiac rehabilitation. This includes people who have experienced or live with any of the following:
Heart Attack (Myocardial Infarction)
Cardiac rehab after a heart attack is one of the most well-evidenced interventions in all of cardiovascular medicine. I have worked with many heart attack survivors over the years, and the transformation that regular, appropriately supervised exercise produces is genuinely remarkable, not just physically, but psychologically too.
Phase 4 is particularly valuable for heart attack survivors because sustained exercise helps strengthen cardiac muscle, manage ongoing risk factors such as hypertension and high cholesterol, and significantly reduces the risk of a further event. The research supporting this is compelling, and I discuss it in more detail in my companion article on the evidence behind Phase 4.
Heart Failure
Exercise for heart failure patients has undergone a profound shift in clinical thinking over recent decades. Where exercise was once viewed with caution, or even discouraged, for people with heart failure, it is now recognised as one of the most effective interventions available. Cardiac rehabilitation for heart failure has been shown to improve exercise capacity, reduce hospital admissions, and significantly enhance quality of life.
Phase 4 programmes designed for heart failure patients, like mine, are run by instructors who understand the specific physiological considerations involved, appropriate exercise intensity, recognition of decompensation warning signs, and the importance of ongoing symptom monitoring during every session.
Coronary Artery Bypass Graft (CABG) Surgery
Recovery from bypass surgery is a significant undertaking, and Phase 4 provides the ongoing support needed to consolidate the physical gains made during formal rehab. Many patients I have worked with following CABG surgery describe Phase 4 as the stage where they truly began to feel “normal” again, rebuilding fitness, confidence, and a sense of control over their health.
Percutaneous Coronary Intervention (PCI / Angioplasty and Stenting)
Patients who have undergone coronary angioplasty or stent insertion are routinely referred for cardiac rehab following their procedure. Phase 4 allows them to maintain the benefits of that rehab long after the formal programme ends, continuing to reduce the risk of restenosis and further cardiac events through sustained, supervised exercise and lifestyle modification.
Stable Angina and Chronic Coronary Syndrome
Counterintuitively, appropriate exercise can actually reduce angina symptoms over time by improving coronary blood flow and cardiovascular efficiency. People living with stable angina or chronic coronary syndrome can participate fully and safely in Phase 4 programmes, provided exercise intensity is correctly calibrated, and symptoms are carefully monitored throughout each session.
Valve Repair or Replacement Surgery
Cardiac rehabilitation following valve surgery is increasingly supported by UK clinical guidelines. Phase 4 offers post-surgical patients a safe environment to gradually rebuild cardiovascular fitness under expert supervision, something that can be difficult to replicate through unsupervised gym activity.
Inherited Cardiac Conditions (ICCs)
Some people with inherited cardiac conditions, such as hypertrophic cardiomyopathy (HCM), may be able to participate in adapted Phase 4 programmes. This requires prior assessment and clearance from a cardiologist, but should not be dismissed as an option. If you have an ICC and are interested in supervised exercise, I am happy to discuss your individual situation.
Do I Need to Have Completed Phase 3 First?
Ideally, yes, Phase 4 builds on the foundation established during Phase 3. However, the reality is that many patients arrive at Phase 4 having never received a formal Phase 3 referral, or having completed Phase 3 some time ago before losing the routine. In these situations, I conduct a thorough individual assessment before anyone joins my programme, covering:
- Full medical history and cardiac diagnosis
- Current medications and any relevant contraindications
- Current exercise capacity and recent activity levels
- Resting heart rate, blood pressure, and oxygen saturation
- Any symptoms on exertion, chest tightness, breathlessness, palpitations, dizziness
Where needed, I will liaise with your GP or cardiologist to obtain the information I need to ensure safe participation. Safety is always the priority.
Are There Situations Where Additional Clearance Is Needed?
Phase 4 involves moderate-intensity supervised exercise and is appropriate for the vast majority of stable cardiac patients. There are some circumstances, however, where I would seek additional medical clearance before commencing, including:
- Unstable or recently decompensated heart failure
- Uncontrolled arrhythmias that have not been recently reviewed
- Significant uncontrolled hypertension (resting systolic BP above 180mmHg)
- A cardiac event or procedure within the past four to six weeks
- Active chest pain at rest or with minimal exertion
If any of these apply to you, that does not necessarily mean Phase 4 is not right for you; it simply means we need to take a careful, staged approach. I would always rather take the time to do this properly than rush someone into a programme before they are ready.
How Can I Join a Phase 4 Programme?
There are three main routes to accessing Phase 4 cardiac rehabilitation:
- Referral from your Phase 3 team, most cardiac rehab teams will signpost to local Phase 4 options when your programme ends. Ask if they have not already discussed this with you.
- GP referral, speak to your GP about whether a Phase 4 programme is available locally, or ask them to refer you to The Lifestyle Physiologist if you are in the Brighton area.
- Self-referral, I welcome direct enquiries from patients who meet the eligibility criteria. You do not need a formal referral letter to get in touch.
If you are based in Brighton, Hove, or the wider Sussex area and would like to explore whether my Phase 4 programme is the right fit for you, please get in touch. I offer a free initial consultation and am happy to answer any questions you or your family may have.
About the Author: Richard Stantiford MSc, ACSM C-EP, BACPR is a Clinical Exercise Specialist and Specialist Personal Trainer based in Brighton. He is the founder of The Lifestyle Physiologist and has over 30 years of experience working with cardiac patients, stroke survivors, and people with chronic conditions. To learn more or book a free consultation, visit thelifestylephysiologist.com.