Injury Prevention Through Strength and Conditioning

Most injury prevention advice targets the wrong variable. People stretch more, buy better shoes and warm up longer, while the thing most strongly associated with getting hurt — a sudden spike in training load — goes unmanaged. Here is what the evidence actually supports, ordered by how much difference it makes.

The short answer

The four interventions with the strongest support are: managing how quickly training load increases, building eccentric strength (the lowering phase, particularly in hamstrings and adductors), training unilaterally to address side-to-side asymmetries, and teaching landing and deceleration mechanics. Static stretching before activity has minimal effect on injury rates and can briefly reduce power output. Strength training itself is the highest-value intervention available — across sports it is associated with substantially reduced injury rates.

1. Load management — the biggest lever

The most consistent finding in the sports injury literature is that injuries cluster around rapid increases in workload. Not high workload — rapid increases in workload. A well-conditioned athlete handling a big week is at far lower risk than an undertrained one attempting the same week after a layoff.

Practically:

• Increase weekly training volume gradually rather than in jumps. Returning after time off means rebuilding, not resuming where you stopped.
• Beware the post-holiday and post-injury spike. The two most dangerous weeks in most athletes’ years are the first week back from a break and the week they feel recovered enough to go hard again.
• Count everything. For a hockey player, gym work plus practices plus games plus skills sessions is the load. Programming the gym in isolation ignores most of the input.

This is unglamorous and it outperforms every mobility routine ever written.

2. Eccentric strength

Muscles are most vulnerable while lengthening under load — decelerating a sprint, absorbing a landing, controlling a stretched position. Training that phase specifically builds tissue tolerance where the failures actually occur.

The highest-value exercises:

• Nordic hamstring curl — the most robustly supported single exercise for reducing hamstring strain rates. Two sets, three to six reps, twice weekly. It is unpleasant and it works.
• Copenhagen plank — the adductor equivalent, and directly relevant to groin strains in hockey and field sports.
• Slow-lowering variations of standard lifts — three to four seconds on the descent of a squat or Romanian deadlift.

3. Unilateral training and asymmetry

Most sports load one side more than the other, and most people have a meaningful strength difference between limbs without knowing it. A gap of more than roughly 10% between sides is associated with elevated injury risk.

Bilateral exercises hide this — the strong side compensates. Split squats, single-leg Romanian deadlifts, step-ups and single-leg jumps expose it and correct it.

This is why testing single-leg jump distance on both sides is more informative than testing a two-legged jump, and why it is part of our standard assessment.

4. Landing and deceleration mechanics

Non-contact knee injuries overwhelmingly occur during deceleration and landing, not acceleration. The knee collapsing inward under load is the classic mechanism, and it is trainable.

The work is simple and boring: low box jumps with a held landing, single-leg hops with a stuck landing, lateral bounds where you hold the landing for a full second before the next rep. Height and distance are irrelevant here; control is the entire point.

Neuromuscular training programmes built on this pattern have shown meaningful reductions in ACL injury rates, particularly in female athletes, who face a higher baseline risk.

The honest section: what does less than people think

Static stretching before training. Little to no effect on injury rates, and it temporarily reduces force output. Use a dynamic warm-up instead. Stretching for range of motion is fine as its own goal — just not as injury prevention.

Foam rolling. Feels good, briefly improves range of motion, no meaningful evidence of injury reduction. Not harmful, just not the lever.

Balance boards and unstable surfaces. Useful in ankle rehabilitation specifically. Largely unnecessary otherwise, and squatting on an unstable surface trains instability rather than strength.

Bracing and taping. Genuinely useful for a previously injured joint. Not preventive for a healthy one.

Recovery inputs that actually matter

Sleep is the largest one. Athletes sleeping under eight hours have been shown to have substantially higher injury rates. No recovery modality compensates for chronic sleep restriction.

Adequate energy intake. Under-eating relative to training load impairs tissue repair and bone health. This is a common and under-diagnosed contributor, particularly in young athletes and endurance populations.

Protein sufficiency supports repair. Beyond that, most supplements marketed for injury prevention have thin evidence.

A practical weekly template

• Every session: 8–10 minute dynamic warm-up, gradually raising intensity.
• Twice weekly: Nordic curls (2 × 3–6) and Copenhagen planks (2–3 × 20–30s per side).
• Twice weekly: a unilateral lower-body exercise — split squat or single-leg RDL.
• Twice weekly: landing work — 3 × 3 low box jumps or lateral bounds with held landings, done fresh.
• Continuously: increase load gradually and protect sleep.

Total additional time: about fifteen minutes per session. That is the whole intervention.

Getting the asymmetries found

You cannot correct an imbalance you have not measured. Our performance assessments test single-leg jump on both sides precisely because that gap is the most common finding and the easiest to fix early. Programming then targets whatever the assessment surfaces, at Downtown or Mt Pleasant.

Book an assessment — it is a considerably cheaper way to find an asymmetry than an injury is.

Frequently asked questions

Does strength training actually reduce injury risk?

Yes — it is the most effective single intervention available across sports, with the research consistently showing substantial reductions in injury rates. It outperforms stretching, proprioceptive training and equipment interventions.

Does stretching prevent injuries?

Static stretching before activity has minimal effect on injury rates and can briefly reduce power output. A dynamic warm-up is the better pre-training choice. Stretching for range of motion is a legitimate goal in its own right, just not an injury-prevention strategy.

What is the single best exercise for preventing hamstring injuries?

The Nordic hamstring curl has the strongest evidence of any single exercise for reducing hamstring strain rates. Two sets of three to six reps, twice per week, is sufficient.

How much of a strength difference between legs is a problem?

A gap of more than roughly 10% between sides is associated with elevated injury risk. Bilateral exercises hide these gaps because the stronger side compensates, so unilateral testing and training are needed to find and correct them.

How does sleep affect injury risk?

Substantially. Athletes sleeping under eight hours per night show markedly higher injury rates. No recovery modality, supplement or treatment compensates for chronic sleep restriction.