Heavy lifting drives running economy
Heavy resistance training, with loads above about 80% of one-rep max lifted with fast intent, improves running economy more than light, high-repetition lifting.
In plain English
For runners, heavier weights for low reps, lifted with the intent to move fast, buy more running economy than lighter pump-style sets. Plyometrics add to this, especially at slower speeds.
Why it works
Heavy loads and fast intent recruit high-threshold motor units and stiffen tendons, which lowers the relative effort of each stride; light high-rep work drives this less.
What it means in practice
Build runner strength around heavier compound lifts (roughly 3-6 reps at 80% or more of max) performed with a fast push, plus some explosive or plyometric work, rather than long sets of light weights. Beginners earn the heavy loads after building technique.
The evidence
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Both heavy resistance and plyometric training improved running economy and time-trial performance, with heavy resistance showing slightly larger effects (g = -0.32 vs g = -0.13 for economy). Confirms that explosive/resistance modalities transfer to distance running performance, with both approaches valid.
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Strength training programs combining low-to-high intensity resistance exercises and plyometric exercises, performed 2-3 times per week over 8-12 weeks, are an effective strategy for improving running economy in highly trained middle- and long-distance runners. The authors note that despite supporting evidence, strength training has historically been overlooked by long-distance runners — referencing data showing that 2008 US Olympic Marathon Trials runners included little strength training, with nearly half doing no strength training at all.
n=93
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Strength training improved running economy in middle- and long-distance runners, but the best method depended on running speed. Plyometric training was most effective at lower speeds (around or below 12 km/h), while high-load strength training appeared particularly effective at higher speeds and in runners with high VO2 max. Submaximal-load and isometric methods showed little to no effect on economy.
n=652
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Several specific findings emerge for runners. (1) Foot-ankle strengthening (Taddei 2020) reduced running injury rate by 2.42-fold versus controls in recreational runners over 12 months. (2) In military cohorts, resistance exercise at least 3 times per week was associated with 54% lower running-injury risk versus those doing none or less than once weekly. (3) Six weeks of neuromuscular training (jumping, landing, strength, endurance, agility, trunk) reduced injury incidence in track and field, particularly MTSS (p=0.012). (4) Trail-runner injury risk factors include: less running experience, neglecting warm-ups, having no specialized running plan, training on asphalt, and double daily training sessions. (5) Inadequate running technique and poor neuromuscular control are key mechanisms alongside training-load issues — more than 70% of running injuries are overuse in nature.
Why we call confidence high
Meta-analyses in distance runners report larger economy gains from heavy and plyometric training than from submaximal-load or isometric work. The size of the effect varies by running speed and athlete level.
Where it applies
Trained adult distance runners with sound lifting technique.
Does not apply to: beginners who have not yet built lifting technique; runners advised against heavy loading for medical reasons.
Last reviewed 2026-06-20. See how we score.