Walking vs swimming for joint pain

Walking or swimming for sore knees and hips? Both help. Here is how they compare, who should choose which, and how to start safely in Malaysian heat.

For sore knees and hips, both walking and swimming help, and the better choice is the one you will do three or four times a week. Walking is free, easy to start and loads the bones and muscles you need for daily life. Swimming or water walking takes weight off the joints, so it suits days when pain is high, when you are heavier, or when you are starting after a long break.

You do not have to pick one. Many people with osteoarthritis do well with walking as the base and the pool as a lower-impact option on bad days.

What does the evidence say for joint pain?

For knee osteoarthritis, a Cochrane review of 44 trials found that land-based exercise reduced pain by about 12 points on a 0 to 100 scale and improved physical function by about 10 points. The benefit was still present 2 to 6 months after supervised treatment ended. The Malaysian MOH guideline on osteoarthritis also lists exercise, including walking, alongside education and weight management as core management.

For water, the Cochrane review of aquatic exercise in knee and hip osteoarthritis included 13 trials and about 1,190 people. It found small short-term improvements in pain, disability and quality of life, with evidence rated as moderate quality. The programmes were typically about 12 weeks.

Both are effective, the effects are moderate rather than dramatic, and regular practice matters most. Water is not clearly better than land, but it can be easier to start with when a joint is very sore.

How do walking and swimming compare?

Neither replaces strength training. Muscle around the knee and hip protects the joint, and WHO recommends muscle-strengthening on two or more days a week for older adults, plus aerobic activity of 150 to 300 minutes of moderate intensity weekly. See our strength training hub.

Who should choose walking first?

Walking is the default for people who:

• have mild to moderate joint pain and can walk 10 minutes without a limp;
• want a free, flexible habit that fits around work and family;
• need weight-bearing activity because of low bone density;
• want to build toward Zone 2 aerobic fitness. Our guides on walking for longevity and brisk walking technique cover pace and form.

In Malaysian heat, walk before 8 am or after 5 pm, or use an air-conditioned mall. Our guide to mall walking in the Klang Valley lists options. Wear cushioned shoes with a firm heel, and carry water.

Who should choose the pool first?

Start in water if you:

• have significant knee or hip pain with walking, or a flare-up;
• are recovering from a lower-limb injury or have been told to limit impact, once your physiotherapist agrees;
• are carrying extra weight and joints ache after 10 minutes on land;
• find the Malaysian midday heat limiting. Water keeps you cooler, though outdoor pools still expose you to UV, so use a hat, rash vest and sunscreen, and avoid 10 am to 4 pm where possible.

Water walking, in chest-deep water, is the simplest start. Walk forward, backward and sideways for 10 to 20 minutes, using the pool wall for balance. Lap swimming adds more cardio load, but breaststroke kick can irritate some painful knees, so try freestyle or backstroke instead if it hurts. Our guides on aqua exercise for joints and public pools for older swimmers in the Klang Valley cover where to go and what to try.

What does a simple weekly plan look like?

A plan for a healthy adult aged 40 or over with mild to moderate joint pain, after a doctor’s clearance if needed.

1. Walking, 3 days a week. A common starting point in practice is 10 to 15 minutes at a pace where you can talk in full sentences, adding about 5 minutes a week, up to 30 to 45 minutes.
2. Water session, 1 or 2 days a week. 20 to 30 minutes of water walking or easy swimming, with a 5-minute warm-up.
3. Strength, 2 days a week. Chair squats, step-ups on a low step and hip bridges, 2 sets of 8 to 12 each. See exercise for knee osteoarthritis.
4. Rest days. At least one full day, more if pain is flaring.

For pain, a common rule of thumb in clinical practice is that mild to moderate discomfort, up to about 4 out of 10, that settles within 24 hours is usually acceptable. If pain is higher, lingers into the next day, or you have new swelling, cut the session by half next time and tell your physiotherapist or doctor. Our broader guide on knee pain and keeping active explains how to adjust.

What are the common mistakes?

• Doing too much, too soon. Going from nothing to 45 minutes of brisk walking is the usual cause of a flare. Add time gradually.
• Skipping the warm-up. Cold, stiff joints hurt more, so start slowly for 5 minutes.
• Using the pool only for relaxation. Work at some effort, enough to breathe slightly harder.
• Ignoring strength. Cardio alone will not protect a weak knee.
• Waiting for the pain to vanish. Keep moving at a lower dose rather than stopping.

Who should check with a doctor first?

See a doctor before starting if you have heart disease, uncontrolled high blood pressure, poorly controlled diabetes, epilepsy, recent surgery, open skin wounds or ear infections (for pools), or breathlessness at rest. Get a medical check promptly if a joint is hot, red and swollen, if you cannot bear weight after a fall, if you have pain at night that wakes you, or if you have fever with joint pain. Stop exercise and seek care for chest pain, fainting or severe breathlessness. In water, never swim alone if you have a medical condition that could cause blackouts.

Nationally, around three in ten Malaysian adults were physically inactive in the 2023 National Health and Morbidity Survey, so regular movement, in water or on land, already puts you ahead of many. For help choosing, see our exercise for chronic conditions hub and the exercise for limited mobility hub.

Key takeaways

• Walking and swimming both reduce joint pain and improve function. Neither is proven better, so choose what you will repeat.
• Start in the pool or with water walking when pain is high or body weight is a barrier. Use walking for bone loading and daily-life fitness.
• Build up slowly: 10 to 15 minutes, adding about 5 minutes a week, and add strength training twice a week.
• In Malaysia, walk early or late, or indoors, and protect yourself from sun at outdoor pools.
• See a doctor for a hot, swollen joint, night pain, fever, chest pain or fainting.