PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY
Athletics research. Athlete wearing a portable metabolic testing system. This system measures factors important in athletic performance, such as heart rate, breathing rate and aerobic capacity (maximum rate of oxygen use). Photographed at INSEP (Institut National du Sport et de l'Education Physique or National Institute of Sport and Physical Education), Paris, France.
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