Strength & ConditioningAnswer

HOW DO I PROTECT BONE DENSITY AS A CYCLIST?

By Anthony WalshRoadman CyclingUpdated 26 May 2026

ANSWER

Lift heavy twice a week. Cycling is non-weight-bearing, so it does almost nothing to build or hold bone density — studies repeatedly find road cyclists with lower bone mineral density than runners and even sedentary peers. The fix is mechanical load: compound resistance work (squats, deadlifts, presses) at 6–10 reps, plus impact where joints allow, 1,000mg calcium and adequate vitamin D daily. Riding alone leaves your skeleton under-stimulated.

KEY TAKEAWAYS

Cycling is non-weight-bearing — road cyclists often show lower bone mineral density than runners and sometimes sedentary peers.
Resistance training twice a week at 6–10 reps is the primary intervention: loaded bone is the only signal to build bone.
Add impact where joints tolerate it — running, jumping or hopping a few times a week — because bone responds to ground reaction force.
Target ~1,000mg calcium daily and keep vitamin D in range; both are required for the skeleton to use the mechanical signal.

WHO THIS IS FOR

IS THIS YOU?

The cycling-only rider who has never lifted

You've ridden for years with no resistance or impact work and have never had your bone density checked.

The masters rider who has had a fracture from a crash

A low-impact crash that broke a bone is a red flag for low bone density worth investigating.

THE ROADMAN VIEW

This is the part of masters cycling nobody talks about until it bites. Anthony has covered the strength side of getting older on the podcast with Andy Galpin and Derek Teel, and bone density sits right alongside fast-twitch fibre as the thing cycling quietly fails to protect. The bike keeps your heart and lungs in brilliant shape and does nothing for the skeleton underneath you.

The reason is simple physics. Bone builds in response to load and impact — the skeleton needs to be told it's under strain to lay down new tissue. Cycling is a supported, smooth, non-weight-bearing action. You can ride 12 hours a week for a decade and give your femur almost no reason to get denser. That's why the research keeps finding competitive cyclists with surprisingly poor bone density for such fit people.

Here's the good news, and it's the Roadman framing throughout: this is fixable, and the fix is the same intervention you should already be doing for power. Heavy compound lifting twice a week loads the spine, hips and legs. Add a bit of impact — a short run, some hops — if your joints allow. Get calcium and vitamin D right. You're not done yet, and your skeleton doesn't have to be the thing that ends your riding.

EXPERT EVIDENCE

WHAT THE EXPERTS SAY

Andy GalpinProfessor of Kinesiology, Cal State Fullerton; muscle physiologist
Bone, like muscle, adapts to the load it's placed under. Non-weight-bearing endurance exercise provides almost no osteogenic stimulus, which is why cyclists need to load the skeleton directly through resistance training and impact to maintain bone mineral density as they age.
Hear it: The Science Of Getting Faster After 40 | Dr Andy Galpin
Dr Wendy KohrtProfessor of Medicine, University of Colorado; researcher in exercise and bone metabolism
Bone responds specifically to high-magnitude mechanical strain and impact loading, not to repetitive low-force movement. For athletes in non-impact sports, progressive resistance training and weight-bearing impact are the most reliable ways to preserve and build bone density.

PRACTICAL APPLICATION

DO THIS WEEK

Lift heavy twice a week with axial-loading compounds
Back squats, deadlifts, Romanian deadlifts, overhead press — movements that load the spine and hips. 6–10 reps with meaningful weight. This is the single highest-value bone intervention for a cyclist who only rides.
Add impact your joints can tolerate
Two or three short sessions a week of running, skipping, or hopping. Even 50 hops a day has bone-density evidence behind it. Build gradually — impact is the stimulus cycling can never provide.
Get calcium and vitamin D right daily
Around 1,000mg of calcium daily from dairy, leafy greens or supplementation, and enough vitamin D to keep blood levels in range. Without these, the mechanical signal has nothing to build with.
Get a DEXA scan if you're over 50 and cycling-only
A bone density scan gives you a baseline. If you've ridden for years with no loading and no impact, it's worth knowing your numbers rather than finding out via a fracture.

COMMON MISTAKES

WHAT CYCLISTS GET WRONG

MISTAKEAssuming a fit, lean cyclist automatically has strong bones.
FIXCardiovascular fitness and bone density are unrelated. Some of the fittest road cyclists have the weakest bones for their age — get tested rather than assume.
MISTAKETreating light, high-rep gym work as enough for bone.
FIXBone responds to high mechanical strain. Use meaningful load at 6–10 reps, not endless light circuits that never challenge the skeleton.
MISTAKEAvoiding all impact because you took up cycling to spare your joints.
FIXA small, progressive dose of impact is protective, not destructive, for most riders. Introduce it gradually rather than avoiding it entirely.

FAQ

FREQUENTLY ASKED QUESTIONS

Why do cyclists have low bone density?

Cycling is non-weight-bearing and low-impact, so it provides almost no mechanical signal to build bone. Long hours on the bike, combined with sweat calcium losses and sometimes low energy availability, can leave competitive cyclists with lower bone mineral density than runners or even sedentary people.

Can strength training reverse low bone density?

Resistance training can halt loss and produce measurable gains in bone mineral density, particularly when it loads the spine and hips with meaningful weight. It works best alongside adequate calcium, vitamin D, and progressive impact loading.

How much calcium do cyclists need?

Around 1,000mg per day for most adults, rising toward 1,200mg for older adults and post-menopausal women. Cyclists also lose calcium through sweat on long, hot rides, so consistent dietary intake matters more than for sedentary people.

Does running help bone density more than cycling?

Yes. Running is weight-bearing and generates ground reaction forces that stimulate bone, which is why runners typically have higher bone density than cyclists. Adding even small amounts of running or impact work to a cycling programme helps protect the skeleton.

Is vitamin D important for cyclists' bones?

Yes — vitamin D is required to absorb calcium and use it for bone formation. Many cyclists who train indoors or in low-sun climates run low. Keeping blood levels in range is a prerequisite for the rest of the bone-protection protocol to work.

Should I worry about bone density if I've never had a fracture?

If you're a long-term cycling-only rider over 50 with no resistance or impact training, it's worth a DEXA scan even without symptoms. Low bone density is silent until a fracture happens — a baseline lets you act before that point.

RELATED EPISODES

HEAR THE CONVERSATIONS

The Science Of Getting Faster After 40 | Dr Andy Galpin

Strength Training For Cycling Simplified | Derek Teel

Heavy Strength Training for Cyclists Over 40 | Roadman Cycling