Locked Up: When Mobility Limits Your Strength

What This Means

You're not weak — you're restricted. Your hips are stiff, your ankles are tight, your thoracic spine doesn't rotate well. You can generate force, but you can't get into the positions where that force is most useful for running. Your body has the engine; it just can't access the full range of gears.

This is common if you spend a lot of time sitting, you're an older runner returning to the sport, or you've simply never done mobility-focused training.

How Your Training Is Built

Your plan prioritizes exercises that demand and develop range of motion — not just stretching, but strength through full ranges.

Full range of motion is non-negotiable. Your plan favours exercises like deep goblet squats with pauses, front squats that demand upright posture, and full-range Romanian deadlifts. Every rep is an opportunity to push a little further into restricted range.

Bilateral before heavy unilateral. You benefit from owning range in both legs together before loading single-leg work heavily. Single-leg exercises are still part of your plan — the priority just shifts toward nailing the bilateral patterns first, then applying that range one leg at a time.

Tempo work. Slower eccentrics (the lowering phase) force you through restricted ranges under control. A 3-second descent on a squat does more for your mobility than a quick bounce through the bottom.

Power work waits. Plyometrics through restricted range of motion is an injury risk. Your plan introduces power exercises only after you've demonstrated adequate depth in your squats and hinges.

What You'll See in Your Plan

Squats: Exercises that demand deep hip flexion and ankle bend — goblet squats, front squats. These won't let you cheat the depth.

Hip hinges: Full-range deadlifts and Romanian deadlifts. No partial-range shortcuts.

Single-leg work: Reverse lunges, which demand more hip extension than step-ups, pushing into the range you're missing.

Core: Movements that integrate spinal mobility — dead bugs and windmills rather than static holds.

Pre-run mobility: Even on easy run days, your plan includes dynamic mobility prep. Locked-up runners benefit more from this than any other profile.

What Your Plan Avoids

• Exercises that let you hide in restricted range — half squats, partial deadlifts, anything where you can avoid going deep
• High-speed movements through ranges you can't yet control
• Excessive static holds — you need to move through range, not just sit in positions

Signs to Watch For

Can't hit parallel in a bodyweight squat? Calf and ankle mobility work takes priority, alongside goblet squat holds at the bottom position. Loading comes after the range is there.

Severely limited hip extension? Your plan addresses this with mobility work before adding heavy hinge exercises. Forcing load through range that doesn't exist yet leads to compensation — usually your lower back picks up the slack.

The Bigger Picture

Mobility restrictions rarely fix themselves, and they tend to get worse as marathon training volume increases. The stiffness you can manage at 30km per week becomes a real limiter at 60. Your strength plan is doing double duty — building force production while simultaneously opening up the ranges where that force matters for your running.