Raising running cadence reliably changes impact-loading biomechanics in the expected direction, but evidence it reduces injury rate or improves performance is much weaker
Interpretation
Anderson et al.'s systematic review found strong evidence that raising step rate reduces peak knee flexion, and moderate evidence for reduced step length, hip adduction and knee extensor moment — but only 2 of 37 included studies addressed injury outcomes directly, and performance evidence was similarly thin. Heiderscheit et al.'s RCT confirms the mechanism directly: +5% cadence reduced knee energy absorption, +10% also reduced hip energy absorption. Van Oeveren et al. found inexperienced runners self-select a cadence (77-80 strides/min) measurably below their own heart-rate-optimal rate (~83 strides/min) — meaning there's real headroom for many runners to raise cadence toward their own optimum, even before any injury claim is invoked.
Practical implication
Use cadence coaching to change loading mechanics (a well-supported, specific outcome), not as a blanket injury-prevention or performance prescription — the evidence for those two claims specifically is thin and the review itself says so. A 5-10% increase from a runner's self-selected rate is the range with direct mechanistic support.
Sources
3 sources, independently verified.
The evidence base on cadence is heavily skewed toward biomechanics (36 of 37 studies) and almost absent on injury (2 studies) and performance (5 studies, insufficient to draw conclusions). What evidence does exist is very limited for injury outcomes, but there is strong evidence that raising step rate reduces peak knee flexion and moderate evidence it reduces step length, hip adduction, knee extensor moment and foot-strike angle — mostly shown as immediate effects, with long-term effects largely unstudied.
Experimentally raising step rate by 5% reduced knee energy absorption, and +10% also reduced hip energy absorption; step length, vertical centre-of-mass excursion, braking impulse and peak knee flexion all fell with higher cadence. The clearest direct mechanistic evidence that small cadence increases reduce impact-related loading at the knee specifically.
Inexperienced runners self-selected a stride rate of 77-80 strides/min, below the heart-rate-optimal rate of roughly 83 strides/min (~166 steps/min) found in the same group; the gap between self-selected and optimal cadence didn't change across the tested speed range. Supports the idea that many runners — especially novices — naturally run at a cadence below their own physiological optimum.