Ramping Up Training Safely: Avoiding Overuse Injuries

There's a particular kind of optimism that arrives with a new training plan. A marathon on the calendar, a New Year's resolution finally taking shape, a return to the gym after a quiet summer — whatever the trigger, the instinct is often the same: do more, do it now. Unfortunately, this is also the single most common reason we see people in clinic. Not a dramatic fall or a twisted ankle, but a knee, Achilles or shin that's been quietly complaining for weeks before it finally stops them in their tracks.

Overuse injuries don't happen because your body is fragile. They happen because tissue — tendon, bone, muscle — adapts to load, but only at a certain speed. Push the volume or intensity up faster than your tissues can keep pace, and something eventually gives. The good news is that this is almost entirely preventable once you understand how the process works.

Why "too much, too soon" is the real culprit

Tendons, bones and muscles all get stronger in response to load, but they don't all adapt at the same rate. Muscle can strengthen relatively quickly. Tendon and bone are slower, denser tissues that take longer to remodel. This mismatch is exactly why a runner can feel fit and strong in their legs while their Achilles or shin bone is quietly falling behind, unable to keep up with the sudden jump in mileage.

This is also why overuse injuries so often seem to "come from nowhere." There's rarely a single incident to point to. Instead, it's a gradual accumulation of load outpacing recovery, week after week, until the tissue finally reaches its limit. By the time pain shows up, the underlying strain has usually been building for some time.

The 10% rule (and why it's a guide, not gospel)

A useful starting principle is to increase your training volume — distance, weight, sets, or time — by no more than around 10% per week. It's not a precise scientific law, but it's a sensible guardrail that keeps most people out of trouble.

What matters more than the exact percentage is the pattern: avoid stacking several changes at once. A common mistake is increasing running distance, adding hill sessions, and switching to new trainers all in the same fortnight. Any one of those changes alone might be fine; together, they overwhelm your body's capacity to adapt. Change one variable at a time, hold it steady for a week or two, and see how your body responds before adding the next.

Building in a lighter "deload" week every three to four weeks also gives tissues a chance to properly recover and consolidate the adaptation you've been asking for, rather than constantly playing catch-up.

Warning signs worth listening to

Some discomfort during a training block is normal — muscles feel worked, joints feel used. What's worth paying attention to is pain that:

• Is sharp, localised, or feels different from typical training soreness
• Persists or worsens the next day rather than easing off
• Changes how you move — a limp, a shortened stride, favouring one side
• Occurs at the same point in every session, especially early on

These are signs your tissue is under more strain than it can currently handle. Catching this early and adjusting your load for a week or two is usually enough to settle things down. Ignoring it and pushing through tends to turn a minor niggle into a stubborn tendon problem that can take months to resolve, which is where treatments like shockwave therapy sometimes become necessary for injuries that have been left too long.

Building resilience, not just mileage

Increasing training volume is only half the picture. The other half is making sure your body is actually prepared to handle it. Strength work — particularly for the calves, hips and core — gives tendons and joints more capacity to absorb load, which is why it's such a valuable addition alongside running or cardio training rather than an optional extra. A structured strength and conditioning programme, tailored to your sport and current niggles, can make a genuine difference to your injury resilience over a season.

Sleep, protein intake and simply respecting rest days all play a role too. Recovery isn't the absence of training — it's the part of the process where the actual adaptation happens.

If you're building towards a specific event, it's worth planning your load progression properly from the outset. Our marathon and running preparation support is designed around exactly this kind of structured build-up, and the same principles apply whether you're training for a ski season with ski-fitness conditioning or simply trying to get back into regular gym sessions without a setback.

When to get it checked

If you've picked up a niggle that isn't settling within a week or two despite easing off, it's worth getting it looked at rather than guessing. A proper assessment can identify exactly which tissue is under strain and why, so you can adjust training sensibly instead of stopping altogether or pushing through and making it worse.

At our Vauxhall clinic, we see a lot of runners, gym-goers and weekend athletes going through exactly this kind of training ramp-up. If something's been nagging at you for more than a couple of weeks, or you'd simply like a second opinion before increasing your load further, our physiotherapy team would be happy to help you get back to training with confidence.