Target Hamstring, Trunk Strength for Rower Back Pain Relief

Introduction

Chronic low back pain affects more than half of elite adolescent rowers. Addressing this requires looking beyond the spine itself to the muscles that control its movement. New evidence from two 2026 studies illustrates that targeted strength and flexibility work for the hamstrings and trunk can directly reduce pain and improve performance on the rowing ergometer.

Hamstring Stiffness: A Hidden Driver of Low Back Pain in Rowers

Ozan A. Sekibağ and Şule Hantal from Istanbul Nişantaşı University investigated why back pain is so common in young rowers. Their twelve-week trial with 60 elite male rowers, aged 14-18, focused on the hamstrings. The researchers measured not just pain levels but the actual mechanical quality of the muscle—its viscoelastic properties. This refers to how a muscle responds to load, balancing stiffness (elasticity) and resistance to movement (viscosity). Altered properties can disrupt the pelvis-spine relationship during the rowing stroke.

Participants were split into three groups: one performed ballistic hamstring stretching, another did hamstring extensor exercises, and a third used kinesiotaping. While all groups trained four times a week, the outcomes diverged sharply. Both active exercise interventions led to significantly greater improvements in hamstring viscoelasticity and larger reductions in pain scores on the Numeric Pain Rating Scale compared to taping. The difference in pain reduction was statistically substantial (p < 0.001). Athletic performance, measured by a 2000-meter ergometer test, also improved more in the exercise groups, though these gains were more modest. The work confirms that active intervention changes the muscle tissue itself, leading to better function and less pain.

Building a Stronger Trunk Translates to Faster 2000m Times

Concurrently, a team led by Raouf Hammami at the University of Manouba in Tunisia examined how to build a stronger foundation for performance. Their study on pubertal male rowers compared two approaches over eight weeks: global trunk strength training and local, isolated core training. Both programs enhanced muscle strength and proxies of power, but the global training—which involved complex, multi-joint movements—produced superior gains in maximal strength.

Critically for endurance athletes, both training styles led to clear improvements in rowing-specific performance. The 2000-meter rowing ergometer test time dropped significantly in both groups. This finding directly connects improved muscular support of the trunk and hips to the ability to sustain power over a standard race distance. It demonstrates that the limiting factor in an ergometer test isn’t solely the heart and lungs; the engine’s structural integrity—the muscles that transfer force from legs to handle—is equally important.

The Physiology Linking Muscle Quality to Endurance Output

These studies point to a unified physiological principle: efficient endurance is built on a platform of resilient, well-functioning muscle. Stiff, non-compliant hamstrings, as noted in the Turkish study, force the lower back to compensate, leading to pain and energy leaks in the kinetic chain. Each stroke becomes less effective and more metabolically costly. Improving hamstring viscoelasticity allows for a fuller, safer range of motion and cleaner force transfer.

Similarly, a stronger trunk, as shown in the Tunisian research, acts as a rigid lever between the powerful leg drive and the oar or ergometer handle. When this link is weak, power dissipates. Strengthening it allows a greater percentage of generated force to be applied to moving the load. This raises the power output achievable at a given aerobic cost or heart rate, a fundamental goal of Zone 2 training. The resulting improvement in cardiorespiratory fitness scores is then a product of both central cardiovascular adaptation and peripheral muscular efficiency.

Practical Applications for the Rowing Athlete

For rowers and ergometer users focused on aerobic development, these findings mandate a shift in training perspective. Endurance is not built on the erg alone.

First, assess and address hamstring flexibility and tissue quality. The research favors dynamic, active methods over passive support. Integrate exercises like ballistic stretching (controlled, dynamic swings) and hamstring extensor work into warm-ups or cool-downs several times weekly. This can serve as both preventative maintenance and rehabilitation.

Second, commit to dedicated trunk strengthening year-round. Prioritize compound, global movements like deadlifts, weighted carries, and rotational throws that build integrated strength. Supplement these with targeted core stability work. This strength work supports the high volume of low-intensity aerobic training by protecting the spine and improving stroke economy.

These studies have limitations. They focused on adolescent and pubertal male athletes, so results may vary for older or female populations. Furthermore, the precise dosing of complementary strength work within a high-volume endurance program requires individual monitoring, potentially using metrics like HRV to gauge recovery.

Conclusion

Maximizing rowing ergometer performance and health requires a dual approach: developing the cardiovascular system through sustained aerobic work and refining the muscular system through targeted strength and flexibility training. This combination reduces injury risk, improves movement efficiency, and ultimately leads to faster times and greater metabolic fitness.

Sources:
https://pubmed.ncbi.nlm.nih.gov/41834720/
https://pubmed.ncbi.nlm.nih.gov/41729869/
https://pubmed.ncbi.nlm.nih.gov/40935357/