Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014 quad•ri•cep (ˈkwɒd rə sɛp) n. a quadriceps muscle.
The signs and symptoms of a quadricep strain are: (1) pain when moving, stretching or flexing of the thigh, (2) muscle spasms of the injured muscles, (3) swelling over the injury, (4) Weakened leg (moderate or severe strain), (5) Crepitation (“crackling” feeling and sound when th...
these fibers rotate less during a contraction, and when they rotate less, they ultimately position themselves in a way that results in less force production—in other words, this underlying behavior of muscle fibers can lead to muscle weakness....