Hamstring injuries account for 4% to 13% of all soccer injuries and are the single largest cause of playing time lost in the sport. The good news: a well-designed prevention program can cut your risk roughly in half. Prevention comes down to building eccentric strength, exposing your hamstrings to near-maximal sprinting speeds in training, and managing your workload intelligently across the season.
Why Hamstrings Are So Vulnerable in Football
Most hamstring strains happen during sprinting, specifically during the late swing phase of your stride. As your leg swings forward, the lower leg whips out ahead of the body, and your hamstrings have to slam on the brakes to decelerate the shin before your foot hits the ground. During this motion, the hamstring muscles lengthen by roughly 10% while simultaneously contracting at peak force. It’s the most demanding thing your hamstrings do in a match.
There’s also a second vulnerable moment. Right after your foot contacts the ground, a sudden spike in vertical force tries to flex the hip and extend the knee at the same time. If your hamstrings can’t counteract those forces, the muscle gets stretched further under load, which can tip a high-demand contraction into a tear. This is why pure flexibility or static stretching alone won’t protect you. The injury is fundamentally about the muscle’s ability to produce force while lengthening at high speed.
Who’s Most at Risk
The single strongest predictor of a future hamstring injury is a previous one. In Australian football, the recurrence rate sits at 34%, and the risk is highest in the early period after returning to play. Players who’ve had a hamstring strain often lose playing time in their first matches back, even after being cleared.
Age is the other major factor. Players over 23 are nearly four times more likely to sustain a hamstring injury than younger teammates, and the odds increase by about 1.78 times for each additional year of age. Research on English Premier League players found that older, more powerful, and less flexible players carry the highest risk. If you’re 25 or older and have had a previous strain, a dedicated prevention routine isn’t optional.
The Nordic Hamstring Exercise
The Nordic hamstring exercise is the most studied and most effective single tool for hamstring injury prevention. A meta-analysis covering 8,459 athletes across multiple sports found that programs including the Nordic exercise reduced hamstring injuries by 51%. It essentially halves your risk.
The exercise is straightforward: you kneel on a pad while a partner holds your ankles, then slowly lower your torso toward the ground, resisting gravity with your hamstrings for as long as possible. The key is the eccentric phase, where the muscle lengthens under tension, which mirrors the exact demand that causes injuries during sprinting.
A season-long study of Australian footballers found that players doing Nordics significantly increased both their eccentric hamstring strength (by about 83 Newtons) and the length of their hamstring muscle fibers. Longer fibers are more resistant to strain because the stretch is distributed across a greater length of tissue. Players in the Nordic group also improved their 5-meter sprint time by 3.3% and saw a 3% increase in maximum sprinting velocity, so this isn’t just injury insurance. It makes you faster.
Isometric Training as a Complement
Long-length isometric holds, where you contract your hamstring in a stretched position without movement, offer a second pathway. In the same Australian football study, isometric training produced similar gains in fiber length and eccentric strength as Nordics. It didn’t improve sprint performance, but it’s a useful alternative for players who find Nordics too demanding on sore or previously injured hamstrings, or as a complement on lighter training days.
Both approaches work best when paired with a periodized sprinting program rather than done in isolation.
Sprint Exposure: Speed as a Vaccine
One of the more counterintuitive findings in hamstring prevention is that avoiding high-speed running actually increases your injury risk. A large study of 620 elite football players across more than 24,000 player-turnarounds found that both too little and too much near-maximal sprinting were associated with higher injury rates. There’s a sweet spot.
The key threshold appears to be 95% of your maximum sprinting speed. Players who reached above 95% of their top speed during training had fewer match hamstring injuries than those who only hit 85% or 90%. Training at that near-maximal intensity two days before a match (what practitioners call “D-2”) showed the strongest protective effect. In the entire dataset, there were zero match hamstring injuries when near-maximal sprint exposures were programmed at D-2.
The practical takeaway: your weekly training needs to include at least a few genuine high-speed sprints, not just jogging and moderate-pace drills. If your hamstrings never experience match-intensity speeds in training, they’re underprepared for the moments that matter.
A Structured Warm-Up
The FIFA 11+ program is a 15-exercise warm-up sequence designed to be performed at the start of every training session. It’s built in three parts: slow running with active stretching and partner contact, then a core block of exercises targeting leg strength, balance, and plyometrics (each with three difficulty levels), and finally moderate-to-high-speed running with cutting and planting movements. The whole routine takes about 20 minutes.
Studies show improvements in stability and neuromuscular control with as few as two sessions per week, though greater benefits come with more frequent use and longer adherence over the season. For youth players, it doubles as both an injury prevention tool and a performance builder, since the balance and core strength gains translate directly to on-field movement quality.
In-Season Maintenance
Preseason is when most players build hamstring strength, but maintaining it through the competitive calendar is where many programs fall short. Research suggests that one dedicated strength session per week is enough to preserve the gains you made in preseason. Drop below that, and strength characteristics start to erode.
For hamstring-specific work, a practical in-season protocol is 4 sets of 8 repetitions on a hamstring curl or similar exercise, performed once or twice per week. Pair that with your Nordic exercises and sprint exposures, and you can keep eccentric strength levels stable across a 10-month season. The total weekly time commitment is modest, maybe 15 to 20 minutes of targeted hamstring work on top of your normal training.
Strength Benchmarks Worth Knowing
If your team uses a NordBord or similar device to test eccentric hamstring strength, the reference point for professional football players is roughly 4.2 Newtons per kilogram of body mass. A simpler rule of thumb used in research: aim for eccentric hamstring strength (in Newtons) equal to about four times your body weight in kilograms, plus 26. For an 80 kg player, that’s around 346 N per leg.
More important than hitting a specific number is tracking side-to-side symmetry. A meaningful imbalance between your left and right hamstrings, particularly after a previous injury, signals that one side may be compensating and the other remains vulnerable. Regular testing every four to six weeks during the season helps catch these gaps before they become problems.
Putting It All Together
An effective hamstring prevention program for football doesn’t require complicated equipment or hours of extra training. It requires consistency across a few key habits: Nordic hamstring exercises two to three times per week in preseason (scaling down to once or twice in-season), genuine near-maximal sprint exposure in training at least once per week and ideally two days before matches, a structured warm-up like the FIFA 11+ before every session, and one strength maintenance workout per week during the competitive season. Players over 23 or those with a previous hamstring injury should treat these as non-negotiable rather than supplementary.