Simply put, closed chain exercises are where the body is moved through space, while open chain exercises demand that a foreign object is moved through space. (weckmethod.com)
Since exercise demands more protein, this amount of protein is often not enough for those who regularly participate in exercise. (energyfirst.com)
This key question has been answered maybe by controlled studies in which women undergo dietary caloric restriction imposed in the face of increasing exercise demands. (paleoforwomen.com)