Which sports product innovation was first to incorporate computer chip technology to provide real-time performance data to athletes during training?

Major sports brands are constantly pushing the boundaries of product innovation to enhance athletic performance. This poll tests your knowledge about a revolutionary product development that changed how professional athletes train and compete. Think about the intersection of technology, materials science, and athletic performance as you consider the options.

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Nike+ running shoes (2006) with pressure sensors connected to iPods
Adidas miCoach smart ball (2014) with integrated sensors for kick analysis
Under Armour E39 compression shirt (2011) with biometric tracking
Speedo LZR Racer swimsuit (2008) with ultrasonic bonded seams