Can Strength Training Help When Your Knees Ache?

In brief

• Aching knees deserve context; a headline cannot diagnose the cause.
• NICE supports tailored therapeutic exercise for osteoarthritis management.
• The goal is confident, repeatable movement—not pushing through warning signs.

Pain is a reason to ask better questions

Aching can change how you move, what you avoid and how confident you feel. It does not automatically tell you whether a particular exercise is safe, harmful or appropriate. Symptoms, history, swelling, recent injury, activity and general health all matter, which is why persistent or concerning pain deserves assessment from a qualified healthcare professional.

This is especially important when pain follows a significant injury, comes with marked swelling or locking, worsens quickly, affects sleep or is accompanied by other symptoms. Strength coaching can help with exercise choices, but it is not a diagnosis and it should not replace medical advice.

What the guidance supports

NICE describes tailored therapeutic exercise as a core treatment for osteoarthritis, including muscle strengthening and general aerobic fitness. “Tailored” is doing important work in that sentence. It means the exercise is adjusted to the person’s symptoms, function, preferences and circumstances, rather than applying one punishing knee routine to everyone.

A systematic review and network meta-analysis examined different resistance-training approaches for knee osteoarthritis. Reviews like this can help compare options, but they do not turn one method into a universal answer. The useful takeaway is that strengthening is a legitimate area to discuss, with the type and dose shaped to the individual.

Start with what you can repeat

A good starting point might use a smaller range of motion, a slower pace, support from a stable surface or a variation that feels more comfortable. The goal is not to prove that discomfort does not matter. It is to find a level of work that lets you build confidence and observe how the knee responds over time.

Progress may involve more control, a little more range, a gradual increase in load or simply showing up consistently. Some days will need an adjustment. That is not a failure of the plan; it is part of tailoring the plan to the person.

• Use symptoms and function as information, not a challenge to override.
• Choose a version of the movement that you can perform with confidence.
• Increase the challenge gradually and review the response over time.

Keep the claim honest

Strength training may help some people with knee osteoarthritis manage symptoms and maintain function, but it is not a guaranteed cure and knee pain is not synonymous with osteoarthritis. The research does not justify promising that one exercise will fix every knee. It supports thoughtful, individualised movement alongside appropriate clinical care.

If you want to explore training with an aching knee, bring the relevant history and any advice you have already received into the conversation. A considered coach will work within that information and refer you back to healthcare support when the question is clinical rather than programming-related.

Evidence used for this article

This guide is educational rather than medical advice. Individual responses to training vary.

1. Osteoarthritis in over 16s: diagnosis and management — Recommendations

   National Institute for Health and Care Excellence

2. Effects of three types of resistance training on knee osteoarthritis: A systematic review and network meta-analysis

   PLOS ONE

3. UK Chief Medical Officers' physical activity guidelines

   UK Department of Health and Social Care

Have a more useful conversation about your starting point.

Bring your questions and any existing healthcare guidance to a complimentary consultation. There is no pressure to train on the spot.