April 6, 2007, Newsletter Issue #48: Cushioning Srategies
Tip of the Week
Most running shoe manufacturers use different – at least in name - cushioning devices. These include various air bladders, gel or liquid pads, and wedges, layers and compressed capsules of foam (typically EVA or polyurethane).
Every cushioned running shoe has its fans, but they're all designed for the same purpose: to reduce the shock that's transferred to your body on impact. While the air, gel and liquid systems may retain their cushioning ability longer than foam, virtually all of them are contained within foam, so the extended life of these shoes is arguable.
Don't worry about air, gels, or other devices. Your best bet is to find a shoe that fits you well and suits how you run (overpronate, neutral, etc.). If it's comfortable for you, run in it. If you find you need more cushioning, most running shoes will accommodate after-market insoles. Simply remove the shoe's original insole, and replace it with one of these cushioned gel or foam inserts.
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