More strength work, fewer injuries: the dose-response evidence

The 2014 Lauersen meta-analysis established that strength training prevents sports injuries better than any other exercise type. This 2018 follow-up asked the question every coach asks next: does more help more?

Pooling six randomised trials — 7,738 participants aged 12 to 40 — the headline replicated emphatically: strength-training programs cut injury risk to roughly one-third of control rates. The new contribution was the dose-response analysis: as the abstract puts it, a 10% increase in strength-training volume reduced injury risk by more than four percentage points. Protection was not a threshold you cross once; it scaled with the work done. And across all that added training, no safety signal emerged — the intervention that prevents injuries did not cause them.

The honest boundaries: six trials is a modest base, their populations and programs varied, and the dose-response curve is modelled across studies rather than a prescription for any individual athlete. 'More is better' still has to be programmed by someone who knows how to progress load without outrunning recovery.

Together with the 2014 analysis, the message to athletes and weekend competitors is hard to overstate: strength work is not an optional extra beside sport practice — it is the best-evidenced injury insurance available, and the premium scales down the more consistently you pay it.

Key findings

• 6 randomised trials with 7,738 participants aged 12–40, covering 177 injuries.
• Strength training reduced injury risk to roughly one-third of control rates (relative risk 0.338, 95% CI 0.238–0.480).
• Dose-response: per the abstract, a 10% increase in strength-training volume reduced injury risk by more than four percentage points.
• No safety signal — properly programmed strength work protected without adding harm.
• Only six heterogeneous trials qualified, and the dose-response relationship is modelled across studies, not an individual prescription.

Clinical relevance

This pair of meta-analyses is the foundation of our strength-first athletic development: progressive, properly supervised strength training is the closest thing sports medicine has to injury insurance — and the dose-response data says consistency, not heroics, is what buys the protection.

Prepared by the Volt Health team as an educational summary of the cited publication. It is not medical advice; assessment and treatment decisions should always be made with a qualified health professional.