Bed springs make new "shock absorber" for runners' feet

Health researchers in Lancashire have designed a new type of trainer, containing miniaturised mattress springs. They claim the springs can reduce injury.

Prof Jim Richards, from the University of Central Lancashire, explains how the design creates a "shock absorber" that is similar to one in a car.

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The bed spring trainer

Health researchers in Lancashire have designed a new type of trainer, containing miniaturised mattress springs. They claim the springs help to reduce injury.