IS CYCLING GOOD FOR KNEES?

Cycling is repeatedly recommended for knees because it ticks three boxes at once: no impact, a smooth controlled arc of movement, and quadriceps strengthening without loading the joint through its most vulnerable positions. Your body weight goes through the saddle, not the joint, and you never absorb a landing.

That combination is why cycling and stationary bikes turn up in almost every knee rehabilitation programme, from post-surgery protocols to arthritis exercise advice.

• Strengthens the quadriceps, which help stabilise the kneecap and share load across the joint.
• Moves the joint through repeated gentle cycles, which helps circulate joint fluid and keeps stiff knees moving.
• Builds aerobic fitness without impact, which matters because weight management reduces total joint load.
• Lets you dose load exactly. Twenty easy minutes at 100 watts is a genuinely prescribable amount of movement.
• Is easy to do daily, and consistency beats intensity for joint comfort.

Cycling turns unhelpful the moment force per pedal stroke gets high or the position is wrong.

• Grinding big gears at 55-65rpm up long climbs, or doing low-cadence torque intervals with an already-sore knee.
• Saddle too low or too far forward, which keeps the knee bent and compressed under load.
• A big jump in volume, especially new indoor hours where you never coast.
• Standing sprints and maximal starts on a cold knee.
• Any position that makes one knee track inward or outward under load.

Position

• Saddle height around 0.883 x inseam to the saddle top, then adjust in 3mm steps.
• Knee roughly over the pedal axle with the crank level and forward.
• Cleats a touch rearward rather than far forward.
• Enough cleat float that your foot can find its natural angle.

How to ride

• Sit at 85-95rpm. Higher cadence, lower force.
• Warm up for a full 10-15 minutes before any hard effort.
• Build volume by roughly 10% a week, not in leaps.
• Favour longer easy zone 2 rides over frequent maximal work if knees are your limiter.
• Add hip and glute strength twice a week so the knee is not doing everything.

For mild to moderate knee osteoarthritis, gentle stationary cycling is one of the most widely recommended exercise options. The usual advice is low resistance, comfortable cadence, short and frequent rather than long and heavy, and progress measured in weeks. Some ache during and shortly after riding is normal; pain that is clearly worse the following morning means the dose was too big. See the return to riding guide for a structured ramp.