AN examination of the very extensive literature dealing with the function of phosphorus compounds in the chemical mechanism of muscular contraction reveals so many contradictory statements that it is ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

Muscular endurance is a muscle’s ability to contract against a load repeatedly over time, supporting athletic performance and everyday tasks like climbing stairs. Research links higher muscular ...