The Contribution of Strength Training to Running Performance
Strength training is one of the most important, yet often underestimated, factors in improving running performance. For many years, it was considered secondary to endurance training. However, contemporary scientific literature has highlighted its critical role in enhancing running economy and neuromuscular function.
Strength training does not primarily aim at increasing or maintaining muscle mass, but rather at improving the ability of the nervous system to effectively recruit muscle fibers. Through this adaptation, better coordination and greater efficiency in force production during movement are achieved.
Beyond these physiological adaptations, strength training serves as a key tool for identifying and correcting functional imbalances. Through targeted exercises, asymmetries can be detected and improved, whether between the two sides of the body or between muscle groups that work together to produce movement. If left unaddressed, these imbalances lead, in the medium to long term, to increased mechanical stress and are considered one of the main predisposing factors for injuries.
Therefore, strength training functions not only as a performance-enhancing method, but also as a strategic tool for injury prevention, contributing to stability, movement control, and optimization of running mechanics.
The main physiological adaptations associated with strength training include:
- improved neuromuscular coordination
- increased maximal and explosive strength
- improved tendon stiffness
- reduced ground contact time
- enhanced utilization of the stretch–shortening cycle
These adaptations lead to a significant improvement in running economy, meaning a lower energy cost at a given running speed.
According to the scientific literature, incorporating strength training into the training program of endurance runners can improve running economy and performance without negatively affecting VO₂max.
How Strength Training is Applied in Runners
Based on scientific evidence, strength training is not merely a complementary component, but an integral part of a runner’s preparation.
For runners preparing for 6 km and 10 km races, such as the SNF Nostos Run, proper integration of strength training contributes to:
- improved running economy
- maintenance of speed under fatigue
- reduced injury risk
- improved movement mechanics
The practical application of strength training is based on a simple yet fundamental principle:
identify – correct – improve
Through strength and control exercises, runners can identify potential asymmetries and functional weaknesses, correct them, and ultimately enhance performance through more efficient movement patterns.
Basic Principles of Application
Strength training should be performed:
- 2 times per week
- on days that do not interfere with key running sessions
- with emphasis on quality and movement control
Exercise Selection
The focus should be on multi-joint exercises that functionally resemble running mechanics, such as:
- squats
- lunges
- step-ups
- core exercises
Emphasis on the Posterior Chain (glutes, hamstrings, gastrocnemius)
The posterior chain is critical for:
- force production during propulsion
- pelvic stability
- improvement of running economy
- reduction of injury risk
At the same time, strengthening the posterior chain contributes to restoring muscular imbalances and improving movement symmetry, reducing mechanical loads accumulated during training.
Contemporary reviews confirm that systematic strength and plyometric training lead to significant improvements in endurance running performance.
Strength training is not an alternative to endurance training, but the mechanism that allows runners to fully utilize their aerobic potential. The better an athlete can produce, control, and distribute force, the more efficiently and economically they can run.
Θεοδωρακάκος Δημήτριος
Sports Director @sportsexcellence
Sports Excellence Team