
Your hamstrings are a group of three muscles that run along the back of your thigh. They help bend your knee, extend your hip, and stabilize your leg when you walk, run, or change direction. Every time you sprint, climb stairs, or stand up from a chair, your hamstrings are working.
Research consistently shows that weak hamstrings increase injury risk. A large review published in the British Journal of Sports Medicine found that inadequate hamstring strength and poor eccentric control significantly raise the likelihood of hamstring strains, especially in runners and field-sport athletes. Stronger hamstrings do not just improve performance. They also protect your knees, hips, and lower back.
For everyday patients, this matters just as much. Strong hamstrings reduce stress on the knees, improve balance, and make daily movements feel easier and safer.
Hamstring weakness is one of the most common issues physical therapists see, even in active people. One reason is muscle imbalance. Many people are quad-dominant, meaning the muscles at the front of the thigh overpower the hamstrings. Squats, leg presses, and lunges are popular, but hamstring-focused work often gets skipped.
Another factor is injury history. Hamstring strains and tears heal slowly. Without proper rehab and progressive loading, the muscle often regains flexibility before it regains strength. This leaves it vulnerable to re-injury. Studies show that up to one-third of hamstring strains recur within the first year if strength deficits are not addressed.
Time and technique also play a role. Exercises like Romanian deadlifts and Nordic curls require control and patience. When rushed or done incorrectly, people avoid them altogether. The result is a weak link in the posterior chain that shows up as tightness, pain, or repeated strains.
Effective hamstring training should include both open-chain and closed-chain exercises. Open-chain movements, where the foot is off the ground, help isolate the muscle. Closed-chain movements, where the foot stays planted, improve coordination and real-world strength.
Eccentric training deserves special mention. Eccentric means the muscle is lengthening under load, such as when you slowly lower during a Nordic curl. Multiple studies have shown that eccentric hamstring exercises can reduce strain injuries by up to 50 percent in athletic populations. They also improve muscle resilience, which is critical for patients returning to sport or higher-level activity.
For patients recovering from injury or dealing with ongoing tightness, the goal is not just to feel a stretch. The goal is to build controlled strength through a safe range of motion.
If you have mild tightness, general weakness, or are returning to exercise after a break, hamstring strengthening is usually safe and beneficial. You should be able to walk, climb stairs, and bend your knee without sharp pain.
If you are dealing with a recent strain, sudden pain, bruising, or weakness that limits daily activity, start with guidance from a physical therapist. Early-stage exercises often focus on gentle activation before progressing to heavier strength work. Skipping this step is one of the main reasons people get stuck in a cycle of recurring hamstring problems.
1. Deadlifts
Deadlifts are one of the most effective exercises for building hamstring strength because they train the entire posterior chain, including the hamstrings, glutes, and lower back. This makes them especially valuable for patients who want real-world strength that transfers to daily activities and sports.
To perform a basic deadlift, start with your feet hip-width apart and a barbell, dumbbells, or even a dowel rod positioned in front of your shins. Push your hips back, keep a neutral spine, and bend slightly at the knees. As you lift, the weight should travel close to your legs while your chest rises and hips extend. The movement should feel controlled, not rushed.
Research published in the Journal of Strength and Conditioning Research shows that hip-hinge exercises like deadlifts significantly increase hamstring activation while reducing unnecessary strain on the knees. For most people, three sets of 10 to 12 repetitions is a safe and effective starting point. Proper form matters more than heavy weight, especially if you have a history of back or hamstring issues.
2. Romanian Deadlifts
Romanian deadlifts place even more emphasis on the hamstrings by limiting knee bend and increasing tension during the lengthening phase of the muscle. This makes them ideal for improving strength, flexibility, and injury resistance at the same time.
Begin standing with the weight at hip or knee height. Keep your knees slightly bent and hinge at the hips while lowering the weight toward mid-shin. Your back should stay flat, and you should feel a stretch along the back of your thighs. Drive through your heels to return to standing and squeeze your glutes at the top.
Studies on eccentric hamstring loading show that Romanian deadlifts help improve muscle-tendon stiffness, which is linked to a lower risk of hamstring strains. Three sets of 10 to 12 repetitions work well for most patients. If balance or mobility is limited, starting with dumbbells instead of a barbell can make this exercise easier to control.
3. Nordic Hamstring Curls
Nordic hamstring curls are one of the most researched exercises for hamstring injury prevention. They are challenging, but extremely effective when done correctly and progressively.
Kneel on a padded surface with your ankles secured by a partner or stable object. Keep your body straight from head to knees. Slowly lower your torso toward the floor, resisting the movement with your hamstrings for as long as possible. Once you can no longer control the descent, use your hands to catch yourself and push back up.
Multiple large-scale studies in soccer and rugby players show that Nordic curls can reduce hamstring injury rates by nearly half when performed consistently. For most people, one to two sets of 6 to 10 controlled repetitions is enough, especially early on. Quality matters more than quantity here.
4. Single-Leg Bridge
The single-leg bridge is a simple but powerful exercise that targets the hamstrings while also improving pelvic and core stability. It is particularly useful for patients recovering from injury or dealing with side-to-side strength differences.
Lie on your back with one knee bent and the other leg straight. Press through the heel of the bent leg and lift your hips until your body forms a straight line from shoulders to knee. Keep your core engaged and avoid arching your lower back. Lower slowly and repeat before switching sides.
This exercise activates the hamstrings and glutes while reducing stress on the spine and knees. Research on rehabilitation programs shows that unilateral exercises like single-leg bridges help correct muscle imbalances and improve functional movement patterns. Three sets of 10 repetitions per side is a good target.
5. Hamstring Curl With Resistance Band
Resistance band hamstring curls are a safe and accessible way to isolate the hamstrings, especially for beginners or patients rehabbing at home.
Secure one end of a resistance band to a stable object and loop the other end around your ankle. Lie face down and slowly bend your knee against the band’s resistance. Pause briefly at the top, then return to the starting position with control.
This exercise strengthens the hamstrings through knee flexion, which complements hip-hinge movements like deadlifts. Research shows that low-load resistance exercises are effective for early-stage strengthening and reducing muscle inhibition after injury. Aim for three sets of 10 to 14 repetitions. If you feel cramping, reduce resistance or stop and reassess.
Strong hamstrings support your knees, protect your lower back, and make everyday movement more efficient. Whether you are an athlete, a runner, or someone dealing with recurring tightness or past injury, these five exercises cover the most important functions of the hamstrings.
Consistency and proper progression matter more than intensity. If pain, weakness, or repeated strains are holding you back, working with a physical therapist can help you identify the right exercises and load for your body, ensuring long-term strength and injury prevention.
If tight or weak hamstrings are limiting your movement or performance, you do not have to push through it alone. The licensed physical therapists at Manhattan Physical Therapy create personalized treatment plans to help you regain strength, reduce pain, and prevent future injuries.
Call (212)-213-3480 today to schedule your appointment and get back to moving with confidence.
Alexander Liu
"Everyone on the team at Manhattan Physical Therapy is super nice and caring. They were able to pretty quickly diagnose my knee and hip problems and immediately put me to work to reduce the pain.."
Henry Myerberg
"You're not just a patient when you come to the Manhattan Physical Therapy. You feel like family there. In particular, Erica with her colleagues John, Lidia and Joe not only fix and improve you physically, they make you feel welcomed and cared for.."
Hakyung Kim
"Everyone is so kind and helpful! my knee and hip pain have improved massively since starting Manhattan PT, highly recommend to anyone. special thanks to Bianca, Lidia, Joe, and John!"
Manhattan Physical Therapy
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