Strides and sprints improve economy
Short, high-velocity efforts (strides, sprints, and plyometric work) improve running economy and time-trial performance in distance runners, with the gain mediated through neuromuscular and biomechanical efficiency rather than VO2max.
In plain English
Trained runners knocked about 2 to 5 percent off their 5K times in 6 to 9 weeks. They also became 3 to 8 percent more efficient, using less energy at the same pace.
Why it works
Neuromuscular adaptation: improved motor-unit recruitment, greater leg stiffness, more efficient stretch-shortening cycle. The aerobic system is unchanged; the runner gets faster at the same oxygen cost.
What it means in practice
Include strides 1-2× per week on easy days from W3 onward in plans of any audience tier. Strides are the lowest-cost coaching tool with the strongest evidence-to-effort ratio.
The evidence
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5-km time improved significantly in the explosive-strength group with no change in VO2max, indicating gains came through running economy and neuromuscular characteristics. Running economy improved (correlation with 5K time r = -0.54) and maximal anaerobic running velocity increased (r = 0.55). The control group did not improve 5K time. The result is the seminal evidence that short, high-velocity efforts transfer to distance running performance through non-cardiorespiratory pathways.
n=18
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Running economy improved significantly in the plyometric group with no change in VO2max, replicating the Paavolainen finding in less-trained runners. Demonstrates that neuromuscular training transfers to running efficiency without changing aerobic capacity.
n=18
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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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Several intrinsic biomechanical factors appear beneficial for running economy: using one's preferred stride length (or up to 3% shorter than preferred — but not longer); lower vertical oscillation; greater leg stiffness; lower lower-limb moment of inertia; less leg extension at toe-off; larger stride angles (the angle of the parabolic tangent of the center of mass at toe-off); alignment of the ground reaction force with the leg axis during propulsion; maintained arm swing; low thigh antagonist-agonist muscular coactivation; and low activation of lower-limb muscles during the propulsive phase. The review explicitly cautions against prescribing a single 'ideal' running form because individual variation is large and many beneficial features emerge naturally with training rather than from explicit cueing. Beginners who improved running economy after 10 weeks of training showed kinematic changes (knee and ankle angle at toe-off) rather than dramatic form overhauls.
Why we call confidence high
Direct experimental evidence from Paavolainen 1999 (well-trained runners) and Turner 2003 (recreational runners) plus a 2022 meta-analysis (Eihara) covering both heavy resistance and plyometric modalities. The mechanism (running economy, leg stiffness, neuromuscular activation) is documented in narrative reviews (Moore 2016).
Where it applies
Distance runners, recreational through well-trained, both sexes. Effect demonstrated in 18-30 age range; broader generalization plausible.
Does not apply to: complete beginners with <6 months running history (form/load tolerance not yet adapted); runners managing acute injury where high-velocity efforts contraindicated.
Plans that respect this
Plans that scored well on the rubric measures informed by this claim.
- 10-Week Run Your First 10k (3 days)
- 10-Week Run Your First 10k (4 days)
- 10-Week Run Your First Half Marathon (3 days)
- 10-Week Run Your First Half Marathon (4 days)
- 10-Week Sub-1:30 Half Marathon (4 days)
- 10-Week Sub-1:30 Half Marathon (5 days)
- 10-Week Sub-1:30 Half Marathon (6 days)
- 10-Week Sub-1:45 Half Marathon (4 days)
- 10-Week Sub-1:45 Half Marathon (5 days)
- 10-Week Sub-1:45 Half Marathon (6 days)
- 10-Week Sub-2 Half Marathon (3 days)
- 10-Week Sub-2 Half Marathon (4 days)
Last reviewed 2026-05-08. See how we score.