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From Fellrnr.com, Running tips
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Lifting heavy weights requires engaging more of the muscle fibers. Maximum strength training has been shown to improve [[Running Economy]] without changing [[VO2max|V̇O<sub>2</sub>max]]<ref name="Støren-2008"/><ref name="Johnson-1997"/><ref name="Millet-2002"/>. Improvements in endurance have also been seen with elite level cyclists undergoing maximum strength training (5-6 reps to failure)<ref name="AagaardAndersen2010"/>.
==Plyometrics==
[[Plyometrics ]] use explosive exercises where the full strength of the muscles are engaged for a short period of time. Preceded a muscle contraction with muscle extension under load generates maximum muscle engagement. An example of this can be seen in box jumps, where you jump down from a box and then immediately jump back up. The jumping down extends the muscles under load (eccentric exercise) which then helps generate more force on the jump back up. Like Maximum strength training, plyometrics improve [[Running Economy]] and performance without changing [[VO2max|V̇O<sub>2</sub>max]]<ref name="Paavolainen-1999"/><ref name="Turner-2003"/><ref name="SpurrsMurphy2003"/><ref name="Spurs-2002"/>. Plyometrics have also been shown to improve neuromuscular control for running that follows cycling, such as occurs during triathlons<ref name="BonacciGreen2011"/>.
=References=
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