
Today we met with Phil Cutti at the Stanford School of Medicine's Human Performance Laboratory in Palo Alto.




Both of us were between 10-15% body fat, which is a higher number than a caliper test had returned. Phil explained that calipers and immersion tests have a +/- 4% margin of error which comes from varying body hydration levels, the impossibility of applying calipers to organs, and subjectivity inherent in the testing methods.
The lab also does motion analysis for sports ranging from volleyball to cycling to running. By attaching small markers at key joints, cameras positioned around the lab trace the body's movements through a pedal stroke, a volleyball serve, or whatever, and a computer creates wireframe models that show exactly what the body is doing.

Thor Besier shows us a virtual skeleton going through a pedal stroke.
The Human Performance Lab's website is: http://humanperformance.stanford.edu/
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