For an accurate measurement, you'll need to pop into a bike shop.
Times, Sunday Times (2006)
Flow-through respirometry systems provide accurate measurement of gas exchange over long periods of time.
Hodjat Pendar, John J Socha 2015, 'Estimation of Instantaneous Gas Exchange in Flow-Through Respirometry Systems: A Modern Revision of Bartholomew's Z-Transform Method.', PLoS ONE
Moreover, our system enables accurate measurement of sarcomere length in the isolated heart.
Fuyu Kobirumaki-Shimozawa, Kotaro Oyama, Takahiro Serizawa, Akari Mizuno, Tatsuya Kagemoto, Togo Shimozawa, Shin'ichi Ishiwata, Satoshi Kurihara, Norio Fukuda 2012, 'Sarcomere Imaging by Quantum Dots for the Study of Cardiac Muscle Physiology', Journal of Biomedicine and Biotechnology